XPT801 Sound Level Meter and Spectrum Analyzer
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Product Information
Specifications:
- Model: XPT801
- Type: Sound Level Meter and Spectrum Analyzer
- Manufacturer: ACSE
- Version: EN V1.0
Product Usage Instructions:
1. General Information:
The XPT801 is a versatile sound level meter and spectrum
analyzer designed for measuring and analyzing sound levels in
various environments.
2. Safety Information:
Before operating the device, carefully read through the safety
information provided in the user manual to ensure safe usage.
3. Compliance and Directives:
Ensure that the device complies with all relevant directives and
regulations before use to maintain accuracy and reliability.
4. Settings and Adjustments:
Refer to the user manual for detailed instructions on adjusting
settings such as trigger setup, input selection, and spectrum
exceedances.
5. Long-term Storage:
When not in use, store the XPT801 in a safe and dry place to
prevent damage and maintain performance over time.
6. Setup Trigger:
Follow the instructions provided in the manual to set up
triggers including pre-trigger and post-trigger durations for
accurate measurements.
7. Input Selection:
Select the appropriate input mode such as SLM (Sound Level
Meter), MRK (Marker), or MIX based on your measurement
requirements.
8. Spectrum Analysis:
Enable spectrum exceedances and configure octave or third octave
bands for in-depth analysis of sound frequencies.
9. Trigger I/O Input:
Adjust trigger input/output settings including polarity and mode
to synchronize the device with external equipment if needed.
FAQ (Frequently Asked Questions):
Q: How do I calibrate the XPT801?
A: Calibration instructions can be found in the user manual.
Follow the recommended calibration procedures for accurate
measurements.
Q: Can the XPT801 be used outdoors?
A: Yes, the XPT801 is suitable for outdoor use, but precautions
should be taken to protect the device from extreme weather
conditions.
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Miernik poziomu dwiku z analizatorem widma XPT801 – http://acse.pl
1
OPERATING MANUAL
XPT801
Sound Level Meter and Spectrum Analyzer
EN V1.0
XPT801 Sound Level Meter and Spectrum Analyzer
V1.0
Contents
1 Information …………………………………………………………………………………………………………………………………………6 1.1 General information………………………………………………………………………………………………………………………. 6 1.2 Safety information …………………………………………………………………………………………………………………………. 7
2 Compliance and directives ………………………………………………………………………………………………………………..9
3 Identification …………………………………………………………………………………………………………………………………… 11 3.1 Product identification…………………………………………………………………………………………………………………. 11 3.2 Part numbers of main components and accessories………………………………………………………………. 11 3.3 Explanation of product code ……………………………………………………………………………………………………… 11
4 Description of the instrument ……………………………………………………………………………………………………….. 12 4.1 Basic features ………………………………………………………………………………………………………………………………. 12 4.2 Possible applications…………………………………………………………………………………………………………………… 13 4.3 Main features ………………………………………………………………………………………………………………………………. 13 4.4 Performance characteristics……………………………………………………………………………………………………… 14 4.5 Instrument hardware overview ………………………………………………………………………………………………… 15 4.6 Description of main components ……………………………………………………………………………………………… 16 4.6.1 Microphone …………………………………………………………………………………………………………………….. 16 4.6.2 Preamplifier …………………………………………………………………………………………………………………….. 17 4.6.3 Instrument ………………………………………………………………………………………………………………………. 17 4.6.4 Outdoor microphone unit (optional) ……………………………………………………………………………. 19 4.7 Display ………………………………………………………………………………………………………………………………………….. 20 4.7.1 Icon menu………………………………………………………………………………………………………………………… 21 4.7.2 Status Bar ………………………………………………………………………………………………………………………… 22 4.7.3 Control Bar ……………………………………………………………………………………………………………………… 24 4.7.4 Context menu …………………………………………………………………………………………………………………. 25 4.8 Navigation and selection ……………………………………………………………………………………………………………… 25 4.9 Keyboard………………………………………………………………………………………………………………………………………. 26 4.10 Entering text and numbers …………………………………………………………………………………………………………. 26
5 Pre-use checks and operations ……………………………………………………………………………………………………… 27 5.1 Unpacking and inspection ……………………………………………………………………………………………………………. 27 5.2 Standard configuration ………………………………………………………………………………………………………………. 27 5.3 Options and accessories ……………………………………………………………………………………………………………… 29 5.3.1 Hardware accessories ……………………………………………………………………………………………………. 29 5.3.2 Hardware options…………………………………………………………………………………………………………… 29 5.3.3 Firmware options……………………………………………………………………………………………………………. 30 5.3.4 Software options…………………………………………………………………………………………………………….. 31 5.4 Assembling and disassembling components …………………………………………………………………………….. 32 5.4.1 Microphone and preamplifier ……………………………………………………………………………………….. 32 5.4.2 Windscreen ……………………………………………………………………………………………………………………… 33 5.4.3 Outdoor microphone unit ……………………………………………………………………………………………… 33 5.4.4 Connect the outdoor microphone unit to the sound level meter ……………………………… 34 5.4.5 Mounting on a tripod ……………………………………………………………………………………………………… 35 5.5 Battery power supply…………………………………………………………………………………………………………………… 35 5.5.1 Battery power use …………………………………………………………………………………………………………… 35 5.5.2 Charging the battery………………………………………………………………………………………………………. 36 5.5.3 Battery insertion and replacement ………………………………………………………………………………. 37 5.6 External power supply …………………………………………………………………………………………………………………. 38
6 Switching on and off ……………………………………………………………………………………………………………………….. 39 6.1 Switching on …………………………………………………………………………………………………………………………………. 39 6.2 Display auto-off function …………………………………………………………………………………………………………….. 39 6.3 Switching off…………………………………………………………………………………………………………………………………. 40
7 Settings and Adjustments ………………………………………………………………………………………………………………. 41
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7.1 Set current date and time……………………………………………………………………………………………………………. 41 7.2 Using NTP server to synchronize date and time………………………………………………………………………. 42 7.3 Setting the language ……………………………………………………………………………………………………………………. 42 7.4 Display adjustments ……………………………………………………………………………………………………………………. 43
7.4.1 Adjusting the brightness………………………………………………………………………………………………… 43 7.4.2 Setting the display auto power off …………………………………………………………………………………. 44 7.4.3 Selecting the display theme …………………………………………………………………………………………… 44 7.4.4 Turning the Touch display on and off……………………………………………………………………………. 45
8 Viewing modes………………………………………………………………………………………………………………………………… 46 8.1 SLM mode……………………………………………………………………………………………………………………………………… 47 8.2 TABLE mode…………………………………………………………………………………………………………………………………. 48 8.3 Octave and Third Octave display (histogram)……………………………………………………………………………. 49 8.4 Time History display…………………………………………………………………………………………………………………….. 51
9 Getting started: Main Functions……………………………………………………………………………………………………. 52 9.1 Calibration ……………………………………………………………………………………………………………………………………. 52 9.2 Setting the duration of a measurement …………………………………………………………………………………….. 53 9.3 Select acoustic parameters to be displayed ……………………………………………………………………………….. 54 9.4 Set acoustic parameters to be stored………………………………………………………………………………………… 55 9.5 Subtraction of two acoustic parameters …………………………………………………………………………………… 58 9.6 Load a custom configuration ……………………………………………………………………………………………………….. 59 9.7 Set alarms on exceedances ………………………………………………………………………………………………………….. 60 9.8 Starting and stopping a measurement………………………………………………………………………………………… 62 9.9 Starting and stopping a measurement with datalogging …………………………………………………………… 63 9.10 Recording an audio manually ……………………………………………………………………………………………………… 64 9.11 Manually add markers to the measurement …………………………………………………………………………….. 65
10 Advanced functions ………………………………………………………………………………………………………………………… 66 10.1 Setting the calibration parameters ……………………………………………………………………………………………. 66 10.1.1 Setup ………………………………………………………………………………………………………………………………… 66 10.1.2 Calibrations History………………………………………………………………………………………………………… 67 10.2 Setting triggers …………………………………………………………………………………………………………………………….. 68 10.3 Setting audio recording parameters ………………………………………………………………………………………….. 69 10.3.1 Audio recording mode ……………………………………………………………………………………………………. 69 10.3.2 Audio recording resolution ……………………………………………………………………………………………. 70 10.3.3 Audio recording sampling frequency……………………………………………………………………………. 70 10.3.4 Setting a duration limit to audio recordings ………………………………………………………………….. 70 10.4 Custom measurement setups ……………………………………………………………………………………………………… 71 10.4.1 “Current” Configuration …………………………………………………………………………………………………. 71 10.4.2 Load, Edit, Save as, Delete functions …………………………………………………………………………….. 71 10.4.3 “Lock” and “Auto-Load” attributes ………………………………………………………………………………… 73 10.5 Customizing markers …………………………………………………………………………………………………………………… 73 10.6 Continuous measurements datalogging …………………………………………………………………………………….. 74 10.6.1 Recording Configuration ………………………………………………………………………………………………… 74 10.6.2 Continuous datalogging of Time History group ……………………………………………………………. 75 10.6.3 Continuous datalogging of Reports group ……………………………………………………………………. 76 10.6.4 Datalogging of Events group ………………………………………………………………………………………….. 76 10.6.5 Recording Globals group ………………………………………………………………………………………………… 76 10.7 Activating the preamplifier heater…………………………………………………………………………………………….. 77 10.8 Monitor …………………………………………………………………………………………………………………………………………. 78
11 Managing measurement data files ………………………………………………………………………………………………… 79 11.1 Setting the data file storage unit (Tba) ………………………………………………………………………………………. 79 11.2 Information on data file naming …………………………………………………………………………………………………. 80 11.2.1 Parameter Log_sequence = OFF……………………………………………………………………………………. 80 11.2.2 Parameter Log_sequence = ON*……………………………………………………………………………………. 80 11.3 Using the data file Archive ………………………………………………………………………………………………………….. 81
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11.3.1 Visualisation of data files……………………………………………………………………………………………….. 81 11.3.2 Manual cloud synchronisation of data files …………………………………………………………………. 82 11.3.3 Entering a voice note to the measurement ………………………………………………………………… 82 11.3.4 Renaming and deleting a data file …………………………………………………………………………………. 83 11.4 Saving of data files ……………………………………………………………………………………………………………………….. 83 11.4.1 Saving on PC ……………………………………………………………………………………………………………………. 83 11.4.2 Data storage on Cloud……………………………………………………………………………………………………. 83 11.4.3 Automatic cloud synchronisation of data files via Push option …………………………………… 84
12 Network and connections………………………………………………………………………………………………………………. 85 12.1 Network Settings…………………………………………………………………………………………………………………………. 85 12.2 Connecting to a WiFi network……………………………………………………………………………………………………. 85 12.3 Connecting to an Ethernet port …………………………………………………………………………………………………. 87 12.4 Connecting through GSM network * ………………………………………………………………………………………….. 88 12.5 Connecting to a PC with USB interface …………………………………………………………………………………….. 88
13 Firmware update and options ……………………………………………………………………………………………………….. 89 13.1 Firmware version ………………………………………………………………………………………………………………………….. 89 13.2 Firmware update………………………………………………………………………………………………………………………… 90 13.2.1 Wi-Fi firmware update……………………………………………………………………………………………………. 91 13.3 Instrument recovery via recovery firmware………………………………………………………………………………. 92 13.4 Enabling or disabling options ………………………………………………………………………………………………………. 92
14 Maintenance Operations ……………………………………………………………………………………………………………….. 93 14.1 Cleaning the Instrument……………………………………………………………………………………………………………… 93 14.2 Microphone cleaning (microphone diaphragm)…………………………………………………………………………. 93 14.3 Accredited periodical calibration …………………………………………………………………………………………………. 93
15 Troubleshooting Guide…………………………………………………………………………………………………………………… 94 15.1 Formatting eMMC memory (FORMAT) …………………………………………………………………………………… 94 15.2 Restoring Parameters to Default Settings (Reset) …………………………………………………………………… 95 15.3 Malfunctions, causes and possible solutions…………………………………………………………………………….. 96
16 Long-term storage…………………………………………………………………………………………………………………………… 98
17 Spare parts ………………………………………………………………………………………………………………………………………. 99 18 Appendix A Technical Specifications………………………………………………………………………………………. 100 19 Appendix B Parameters ……………………………………………………………………………………………………………. 103
19.1 Measure Parameters………………………………………………………………………………………………………………….103 19.1.1 Parameters Classes……………………………………………………………………………………………………….103 19.1.2 Composition of Acoustic parameters Labels ……………………………………………………………….103 19.1.3 Classes of measurement parameters available for visualisation……………………………..105 19.1.4 Classes of measurement parameters available for storage………………………………………106 19.1.5 Types of parameters available for screens (views)…………………………………………………….106 19.1.6 Types of parameters available for storage………………………………………………………………….107
19.2 Setup Parameters ……………………………………………………………………………………………………………………….107 20 Appendix C Trigger……………………………………………………………………………………………………………………. 110
20.1 Exceedancessettings…………………………………………………………………………………………………………………….111 20.1.1 Exceedance of SLM parameters…………………………………………………………………………………..111 20.1.2 Exceedance SLM mode (Exc_slm_mode) ……………………………………………………………………..112 20.1.3 Exceedance SLM thresholds (Exc_slm_threshold) ………………………………………………………114 20.1.4 SLM exceedance duration filter (Exc_slm_duration)………………………………………………….114 20.1.5 Enabling SLM exceedances (Exc_slm_enable) ……………………………………………………………..114
20.2 Setup trigger………………………………………………………………………………………………………………………………..114 20.2.1 Pre-trigger ………………………………………………………………………………………………………………………114 20.2.2 Post-trigger duration………………………………………………………………………………………………………114
20.3 INPUT …………………………………………………………………………………………………………………………………………115 20.3.1 SLM ………………………………………………………………………………………………………………………………..115 20.3.2 MRK ………………………………………………………………………………………………………………………………..115
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20.3.3 MIX ………………………………………………………………………………………………………………………………..115 20.4 Setting exceedances of a spectrum in octave or third octave bands …………………………………….116
20.4.1 Enabling Spectrum exceedances…………………………………………………………………………………..117 20.5 Trigger I/O Input …………………………………………………………………………………………………………………………117
20.5.1 TRGOUT polarity …………………………………………………………………………………………………………..117 20.5.2 TRIGIN polarity………………………………………………………………………………………………………………117 20.5.3 TRGOUT Mode ………………………………………………………………………………………………………………117
21 Appendix D – File system information………………………………………………………………………………………… 118 21.1 XPT80X_SLM_Config…………………………………………………………………………………………………………………118
22 Declaration of Conformity ………………………………………………………………………………………………………….. 119
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XPT801 Sound Level Meter and Spectrum Analyzer
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1 Information
1.1 General information
Properties of information
· Copyright © 2023, Senseca Italy Srl · All rights reserved in all countries. · Any distribution, modification, translation, or reproduction of parts or all of
the document is prohibited unless authorized in writing by Senseca Italy Srl.
· Senseca Italy Srl reserves the right to make changes or corrections to the
relevant documentation without prior notice.
· Data, figures and descriptions contained in the manual cannot be legally en-
forced.
· Requests for permissions, copies, or technical information regarding this
manual should be addressed to:
Senseca Italy Srl – Via Marconi 5 – 35030 Selvazzano Dentro (PD) – ITALY
Phone +39 049 8977150 / email: info@senseca.com
Version info
Firmware Fw: 0424_151 Fw metrology: 1.0 Fw GUI: 4_56 Fw Wi-Fi: 24_20
Use of the manual
Please read this manual carefully before using the instrument and keep all safety directions and in-
structions for future use. · This instruction manual is an integral part of the instrument and should be kept throughout its
life. · It must be stored so that it is accessible to operators, in a clean place, and maintained in good
condition. · If the manual is lost or damaged, you can download the PDF version from www.senseca.com, on
the model page in the product section. · When transferring the instrument, always attach the instruction manual.
Symbols in the manual
To call the attention of users for the purpose of correct and safe use of the instrument, the following graphic symbols are adopted in this manual:
Info
To indicate particularly useful and important information in reading and understanding the manual.
Notice!
To signal a situation or practice that requires caution but does not directly cause personal injury or harm if ignored.
Warning!
To warn of dangerous situations that, if ignored, could cause injury or damage to the instrument.
Forbidden!
To signal the prohibition of an operation.
Observe the instructions!
To indicate that the instructions for use must be observed.
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1.2 Safety information
Observe the instructions!
Read all safety instructions and directions. · Failure to follow safety instructions and instructions may result in electric shock, fire
and/or serious injury. · Keep all safety directions and instructions for future use.
Notice!
· Upon receipt of the instrument, ensure the integrity of the delivery and, in case of non-conformity with what was ordered or damage to the instrument, promptly report the inconvenience to the carrier and the instrument supplier.
· Any adjustment, maintenance and repair of the equipment should be carried out only by trained service.
· Any contractual and extra-contractual liability of the Manufacturer for damage caused to persons, animals or property, from adjustment, maintenance errors and improper use is excluded.
· If you have any doubts regarding the condition and/or functionality of the instrument and attached parts, please contact Senseca Italy Srl.
Warning!
· During the first use of the instrument report, to the instrument supplier, any anomalies or malfunctions found.
· Use only original or Manufacturer-approved spare parts to avoid possible damage to the instrument.
· Do not remove any safety signs, stickers or labels from the instrument. Keep safety signs, stickers, or labels in good condition so that they can be read well.
Warning!
Explosion Hazard: The device is not designed for use in potentially explosive environments. It should not be operated in the presence of flammable liquids or gases.
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Forbidden!
It is forbidden to use the instrument improperly. In particular: · Do not use the instrument in explosive environments or areas and in aggressive, cor-
rosive atmospheres with oil-containing vapors. · Do not use the instrument in the presence of flammable liquids or gases. · Do not allow liquids to penetrate inside the instrument. · Avoid condensation on the membrane, as it substantially alters its acoustic response,
leads to corrosive phenomena and contributes to the formation of residues that are difficult to remove. In case of exposure of the microphone chain to weather, use outdoor protection systems. · Avoid even minor impacts to the microphone capsule. · Do not expose the instrument to strong vibration.
Forbidden!
It is forbidden to make changes and/or attempts to repair the instrument. In particular: · Making changes, causes the instrument’s Declaration of Conformity to lapse. · For damage resulting from improper use, the user is solely responsible. Any repairs
must be carried out by a qualified technician.
Forbidden!
· Children and persons with reduced abilities or lack of specific experience and knowledge are prohibited from using the instrument unless they are assisted by qualified personnel responsible for their safety.
· It is forbidden for children to play with the instrument. · It is forbidden to disperse packaging material into the environment and leave it within
the reach of children as it can be a potential source of danger. It must therefore be disposed of in accordance with current legislation.
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XPT801 Sound Level Meter and Spectrum Analyzer
2 Compliance and directives
Acoustical Directives The product meets the following class 1 specifications.
Sound Level Meter: · IEC 61672-1 (2013) class 1 · IEC 60651 (1979) plus amendment 1 (1993-02) and amendment 2 (2000-10), type 1 · IEC 60804 (2000-10) type 1 · ANSI S1.4-1983 plus ANSI S1.4A-1985 amendment type 1 (sound level meter) · ANSI/ASA S1.4-2014 class 1 · ANSI S1.43-1997 type 1
Octave band and fractional octave filters: · IEC 61260-1 (2014) · ANSI/ASA S1.11-2014 Part 1
Homologation in accordance with IEC 61672-1 (2013) and IEC 61260 (2014) is pending.
IEEE 802.11 (Wi-Fi) certifications: XPT80X sound level meters contain IEEE 802.11b/g/n certified RF module.
FCC ID: QOQWGM160P IC
ID:
5123A-WGM160P
KC:
R-C-BGT-WGM160P
TELEC: [R] 005-102265
V1.0
FCC and IC notices
Notice: This device complies with Part 15 -15.247(a2) and 15.247(b) and 15.249 of the FCC Rules and with Industry Canada (IC) licence-exempt RSS standard(s). Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
Notice: This equipment has been tested and found to comply with the limits for Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and radiates radio frequency energy, and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
· Reorient or relocate the receiving antenna. · Increase the separation between the equipment and receiver. · Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected. · Consult the dealer or an experienced radio/TV technician for help.
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Notice: To satisfy FCC/IC RF exposure requirements for mobile and base station transmission devices, a separation distance of 20 cm or more should be maintained between the antenna of this device and persons during operation. To ensure compliance, operation at closer than this distance is not recommended. The antenna(s) used for this transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
Notice: Under Industry Canada regulations, this radio transmitter may only operate using an antenna of a type and maximum (or lesser) gain approved for the transmitter by Industry Canada. To reduce potential radio interference to other users, the antenna type and its gain should be so chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that necessary for successful communication.
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XPT801 Sound Level Meter and Spectrum Analyzer
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3 Identification
3.1 Product identification
· The serial number is printed on the label on the back panel. · The microphone model and serial numbers are engraved on the outside of the microphone. · The preamplifier model and serial numbers are engraved on the outside surface of the preampli-
fier.
Information regarding product identification can be found by accessing the page SETTINGS > INSTRUMENT > IDENTIFICATION.
3.2 Part numbers of main components and accessories
The following are the codes of the main components and accessories mentioned in the manual and related to the use of the XPT801 model.
Code
Description
XPT801
Sound Level Meter
MP801
Single range microphone preamplifier
MC801
Precision microphone
WS90
90 mm Windscreen
WSO
Outdoor microphone protection
NS-ENS
Data processing software module
CPL-4.5
5 m microphone extension cable
CPL-4.10
10 m microphone extension cable
HD2020
Class 1 acoustic calibrator, 94-114 dB. Frequency 1 kHz
Firmware and hardware options are covered in the section “5.3 Options and accessories” on page 29.
3.3 Explanation of product code
Code XPT801
Description · XPT: indicates the product line · 1st number: Leading Group (8=Sound & Vibration) · 2nd number: Subunit (0=Sound Pressure Levels) · 3rd number: level of functionality (0= higher level)
Any other numbers separated by a space may be present and follow the three-number code to indicate additional product features (e.g., number of channels or other information)
As for option codes these are preceded by a letter F if it is a firmware option or letter H if it is a Hardware option. They are always preceded by the code for the instrument to which they refer e.g. XPT801-OF1 refers to an option of the XPT801 model, Firmware Option.
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XPT801 Sound Level Meter and Spectrum Analyzer
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4 Description of the instrument
XPT801 is a class 1 sound level meter-spectrum analyzer. It is based on a scalable platform that can be adapted to the growing needs of acoustic professionals. The needs for accuracy, high performance, and ease of use have been met through the use of the latest technology and careful consideration of suggestions from experts in the field. Top quality and performance to provide the acoustics specialist with a comprehensive and reliable tool for applications like environmental noise, risk assessment in work environments and laboratory and industrial product analysis.
4.1 Basic features
XPT801 performs the following basic operations: · Sound measurement: stop, pause and resume measurement of instantaneous and integrated parameters. · Fine-tune the measurement using a precision acoustic calibrator and archive the calibration history. · Back-erase: upon operator command, backwards erases for a selectable time interval, data of unwanted sound events, excluding them from calculations of integrated values shown on display. · Reset: resets, upon operator command, the integrated values shown on the display. · Time recorder for single event metrics Lmax, Lmin, Lpeak-(max). · Displays broadband and spectral sound values on a color screen. · Displays real-time and stored data while a measurement is in progress. · Allows you to freely select and change, even with measurement in progress, the displayed measurement parameters independently of the stored measurement parameters. · Displays data in numerical and graphical form. · Record audio signal with manual control or by automatic level trigger. · Simultaneously records the time instant of measurement samples and sound events. · Perform statistical analysis of broadband. · Use of manual or automatic markers to annotate portions of time tracks referable to specific sound events. · Enter voice annotations related to the measurement. · Continuous data storage on high-capacity storage media. · Connecting to a network through Wi-Fi, Ethernet, GSM devices. · Diagnosis of proper hardware operation. · Firmware update. · Provides location via built-in GPS. · Synchronizes the watch with PC, GPS or Network Time Protocol (NTP). · Create multiple custom configurations using APPLICATIONS. · View data in the measurement archive. · Mass storage to be used eMMC or µSD (TBA). · Recharges internal high-capacity batteries. · Allows the use of alternative microphone chains to the standard chain and is compatible with pre-polarized microphones. · Handles preamplifiers equipped with internal heater for outdoor uses. · Allows outdoor measurements using specific outdoor protection accessories.
Note: features may be related to specific firmware and hardware functions.
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Info
For the complete list of operations that XPT801 can perform, see the section “10 Advanced functions” on page 66.
4.2 Possible applications XPT801 is suitable for the following applications:
· Assessment of environmental noise levels (DM 16/03/98, ISO1996). · Noise monitoring with sound event capture and analysis function. · Spectral analysis for octave bands and third octave bands. · Complete statistical analysis with calculation of all percentiles from L0.1 to L99.9. · Measurements in workplace environment (ISO9612). · Manufacturing quality control. · Measurement of machine noise. · Noise criteria
Note: Some features are expected but may not be available immediately but only successively after the product is released to the market. Please contact the Senseca Italy Srl sales office for more information.
XPT801 can be supplemented with additional options to extend its scope when needed; firmware can be upgraded directly by the user.
Info
For the complete list of available additional options, see the chapter “5.3 Options and accessories” on page 29.
4.3 Main features
· Large 4.3″ color touch screen display. · Memory: internal 4GB on eMMC. µSD memory up to 64GB (TBA). · Ergonomic design for one-hand operation. · Rugged body design for use in harsh environments. · User interface: intuitive user interaction using smartphone-like gestures; ability to manage func-
tionality even using the 3-button keyboard. · Wireless connectivity: data transfer and remote control of the instrument. · Internal interfaces: Wi-Fi, 4G, LAN, USB-C, RS232/485. · Long-lasting battery life: internal rechargeable battery allows more than 24 hours of measure-
ment time. · “Noise Studio Web storage” (https://noise-studio.senseca.com/) web application: recorded data
storage functions. · “Noise Studio Web Monitor” web application: management functions of one or more devices re-
motely or locally. · NS-ENS “Environmental Noise Studio” desktop application: analysis of noise measurements and
intelligent reporting tools for increased productivity.
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Info
For the complete list of features of the XPT801 instrument, please refer to the section “18 Appendix A Technical Specifications” on page 100.
4.4 Performance characteristics
· Interchangeable microphone chains with automatic identification (digital sensor interface). · Accuracy: class 1 according to IEC61672:2013. · Single measurement interval: 25-140. · Dynamic range: higher than 120 dB. · Frequency weightings A, B, C, Z. · Linear, exponential. · Simultaneous time constants Fast, Slow, Pulse, Peak. · Audio recording: manual or automatic up to 32bit – 48KHz. · Spectral analysis: real time 1/1 – 1/3 oct.; interval 20 Hz-20 kHz (IEC 61260). · Statistical analysis: Ln broadband.
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XPT801 Sound Level Meter and Spectrum Analyzer 4.5 Instrument hardware overview
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Fig. 1 – Hardware overview
1 Microphone capsule 2 Preamplifier 3 Push & pull connector 4 Light sensor 5 Display 6 Keyboard 7 USB-C 8 GSM antenna connector (opt. OH3M) 9 LAN socket (opt. OH3A): RJ45 type connector 10 AUX connector (opt. OH3A): RJ12-type con-
nector, for connection to external devices, e.g., a weather controller
12 Connector for audio output / filtered AC output / trigger I/O: Ø 3.5 mm jack socket
13 Rubber protection for connectors 14 1/4″ threaded hole for fixing stand 15 Battery compartment 16 SIM slot 17 Micro-SD card slot 18 Battery connection 19 Battery compartment opening/closing screw
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XPT801 Sound Level Meter and Spectrum Analyzer 4.6 Description of main components
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Fig. 2 – Block diagram
4.6.1 Microphone The supplied MC801 microphone is of the pre-polarized condenser type, with 1/2″ standard diameter and has a nominal sensitivity of 25 mV/Pa. With this microphone, the free-field frequency response is flat over the entire audio range, and the maximum measurable sound level of the XPT801 is 140 dB. The MC801 microphone meets the requirements of the international standard IEC 61094-4 for type WS2F. Optionally, other microphone types can be mounted.
For more details regarding the technical specifications of the microphones that can be combined with the
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XPT801 sound level meter, please consult the relevant manuals or contact the Manufacturer.
4.6.2 Preamplifier The MP801 preamplifier performs the task of amplifying the weak signal provided by the microphone. The peculiar dynamic performance enables the detection of a wide range of sound signals using a single measurement range. The MP801 preamplifier is also equipped with a CTC (Capacitive Transducer Calibration) calibration device (option OH4), which allows the drifts of the entire measurement chain, including the microphone, to be kept under control by means of a charge-sharing scheme.
Available models are listed in chapters “5.2 Standard configuration” on page 27and “5.3 Options and accessories” on page 29.
Heater The MP801 preamplifier is equipped with an internal heater (option OH4), which can be activated from the GUI. Use of the heater is recommended to reduce condensation on transduction chain components in outdoor uses with high humidity levels and low temperatures.
Automatic detection A chip inside the preamplifier stores certain information about the transduction chain (e.g., the preamplifier serial number) that is automatically detected by the XPT801 sound level meter, allowing the user to use different transduction chains without the need for setting operations.
4.6.3 Instrument The signal from the preamplifier reaches the input of the A/D converter. The analog signal is converted into numerical form by the A/D. The exceptional resolution of the converter, which extends over a range of more than 140 dB, allows high accuracy to be maintained over a single measurement range of about 120 dB where digitization error is negligible. In the DSP, levels with broadband frequency weightings (A, B, C, and Z) and levels with both octave and third-octave constant percentage bandwidth weightings are calculated in parallel. Peak levels are also calculated. The levels calculated by the DSP are transmitted to the microprocessor for further processing, display, storage. The microprocessor supervises all instrument processes: management of the electrical calibrator, memory, TFT touch display, keyboard, network and communication devices (LAN, Wi-Fi, 4G), GPS, codec, and interfaces (RS232C and USB).
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Fig. 3 – Analysis process
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XPT801 Sound Level Meter and Spectrum Analyzer 4.6.4 Outdoor microphone unit (optional)
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Info
For more information, see the outdoor microphone unit manual provided with the unit.
The WSO microphone unit is suitable for prolonged time surveys in outdoor environments, including unattended fixed locations. The unit is adequately protected from rain and wind, and the heated preamplifier provides stability of acoustic parameters over time and allows surveys in a wide range of environmental conditions. The preamplifier of Senseca sound level meters, coupled with the outdoor microphone unit, is equipped with a circuit for electrical calibration of the preamplifier-microphone capsule chain, which uses a charge-sharing technique. The unit free-field frequency response meets class 1 specifications according to IEC 61672 (and IEC60651). The WSO microphone unit must always be placed vertically to allow the rain shield to perform its function and can be used to detect both airborne and ground-borne noise. Senseca sound level meters make spectral corrections to measurements to ensure class 1 tolerances according to IEC61672 in every situation. The easy disassembly and reassembly of the unit allows periodic verification of electroacoustic characteristics to be carried out in the same way as with a standard measuring microphone, using a standard ½” microphone calibrator.
Fig. 4 – WSO outdoor microphone unit
1 Windscreen 2 Stainless steel support
3 Microphone connector 4 Bird spike
Note: For more details on using the outdoor unit, see chapters “5.4.3 Outdoor microphone unit” on page 33, “5.4.4 Connect the outdoor microphone unit to the sound level meter” on page 34 and “9.1 Calibration” on
page 52.
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4.7 Display
XPT801 is equipped with a color backlit TFT touchscreen with sunlight adaptability. For the full list of display features, see the section “18 Appendix A Appendix A Technical Specifications” on page 100.
The interface of the XPT801 is organized into status and control bars, and menus, the latter further organized into panels that can be accessed using navigation icons/keys. When XPT801 is turned on, the instrument displays the Home page, containing elements common to most screens.
1 Home Page (Icon Menu) 2 Control bar 3 Status bar
Fig. 5 Home page
Info
You can adjust some display settings, such as brightness and auto power off: see the section “7 Settings and Adjustments” on page 41.
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4.7.1 Icon menu The main screen of the instrument is called ICON MENU and is the access screen for the main features of the instrument represented by icons. The icon has 2 states:
· inactive: the application is currently unavailable and is represented in shaded color; touch or keyboard have no effect.
· active: the application is available for execution and is represented normally; touch or keyboard runs the application.
The icon menu can be accessed, even during measurements, by holding down the center icon (MENU) on the control bar for a few seconds.
Fig. 6 Icon menu
The basic applications of the instrument are described in the following table.
Table 1 Icon menu
Action
Icon Description
MEASUREMENT
Allows direct access to the measurement panel based on the settings of a setup of the user’s choice
APPLICATION MANAGER
Allows access to panel for selection and management of custom measurement apps
ARCHIVE
Allows access to the panel for managing stored measurements
SYS-INFO
Allows access to the system information and monitor menus
SYS-FUNC SETTINGS
Allows access to system app menus
Allows setting the working parameters of the instrument. Allows setting of all measurement parameters and control of all hardware and computational functions of the instrument. Frequently used parameters can also be accessed directly from the measurement screen.
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4.7.2 Status Bar
The status bar describes through icons the status of the instrument, power, connectivity and measurement status. It also provides access to the activation keys.
Fig. 7 – Status bar
1 Status icons: indicate the mode and operation status of the instrument 2 Activation icons: activated with blue color, deactivated with gray color
Status icons
Icon
Description
Writing to eMMC
Access to “Cloud Storage service” occurred
Access to “Cloud Monitor service” occurred Measurement with recording
Measurement
Indication of overload in progress
LAN
GPS
Icon
Description
Icon
Writing to µSD (TBA)
Description
Cloud active but access to “Cloud storage service” not occurred
Access to “Cloud Manager service” occurred
Synchronization queue (black arrows)
Synchronization active (green arrows)
Pause
Stop
Audio recording Overload memory Wi-Fi
Battery
Notification
Below acoustic threshold
Modem
% available memory of the memory support used
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Activation keys With functionality available, the activation buttons appear in gray color with the symbol in white color. At the time the functionality is activated, the icon appears in blue color. In case the functionality is not available (e.g. 4G hardware not present), the corresponding icon appears present but inactive, with the symbol in gray color.
Example of activating/deactivating modem functionality:
Functionality available
Functionality NOT available
Functionality activated
Icon
Description
Wi-Fi activated
Display shut-off timer
Icon
Description
Icon
Description
Cloud transfer activated (1)
GPS activated
Modem activated
Automatic brightness adjustment
Ethernet activated
Increase volume
Decrease volume
(1) The key turns on/off the parameter Log synchronization. If active and if there are files available to synchronize, the status icon will indicate synchronization.
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4.7.3 Control Bar It allows the user context control and access to related menus. The bar contains three symbols possibly accompanied or replaced by text to indicate three possible actions that the user can perform either by the corresponding key or by touch. A long press of the ENTER key takes the user back to the icon menu.
The content of the bar depends on the context, level, and related status: · CONTEXT: refers to the running application, e.g., Measure, Archive, Sys-info, etc.; · LEVEL: in the specific context refers to a specific action; · STATUS: follows the progress of a specific action.
Table 2 – Control bar icons Icon
Description
Icon menu control · Up/down arrows: icon selection · ON/OFF icon: access to the OFF panel (press 3 seconds)
OFF panel
Press the ON/OFF button for 3 seconds to activate it. · Upper icon: turns off the instrument · Middle icon: cancels the operation and closes the panel OFF · Lower icon: restarts the instrument
Measurement control · Left icon: start measurement without recording · Right icon: start measurement with recording (Log) · Central icon (MENU): access to the context menu
With measurement started: · Left icon: pause · Right icon: stop · Central icon (MENU): access to the context menu
With measurement started and pause button pressed: · Left icon: pause release · Right icon: reset · Central icon: back-erase
With recording (Log) started: · Left icon: manual audio recording · Right icon: stop recording · Central icon (MENU): access to the context menu
Navigation/function management · Arrows (UP/DOWN): allow you to navigate through
the available functions · Central icon (OK): enter the menu
· Middle icon (EXIT): exit the menu
· Central icon (FILTER): allows you to set search filters
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4.7.4 Context menu
Once the measurement panel (MEASURE) has been accessed, the context menu is available in the control bar. The various functions also available during measurement and recording are shown below.
Table 3 – Context menu
Icon
Description
CLOSE Closes the context menu
EDIT APP Set the recording parameters, see “9.4 Set acoustic parameters to be stored” on page 55.
EDIT VIEW Select the parameters visible during the measurement, see “9.3 Select acoustic parameters to be displayed” on page 54.
SEL. VIEW Change the display mode, see “8 Viewing modes” on page 46.
MARKERS (active only during a measurement) Set markers, see “9.11 Manually add markers to the measurement” on page 65.
SAVE APP Stores current settings
4.8 Navigation and selection To navigate within the functions of the instrument, press on the desired item or icon on the touchscreen display or press on the navigation icons on the control bar.
See the chapter “4.7 Display” on page 20 for the complete list of icons in the display and their function.
Info
To quickly exit any screen and return directly to the home page, simply press and hold down for as long as necessary the center icon of the control bar, whatever it is.
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4.9 Keyboard
The keyboard has a waterproof backlit membrane. There are two function keys with white LED backlighting and an ON/OFF/ENTER key with custom-shaped RGB backlighting. The keys on the keypad have the same functions as the corresponding icon on the control bar, for a detailed explanation of the functions see the section “4.7.3 Control Bar” on page 24.
Fig. 8 – Keyboard overview
1 ON/OFF/ENTER key emulates the central icon of the control bar
ENTER function
ON/OFF function: pressed briefly turns the instrument on
2 RGB status LED
3 LEFT key (White LED): emulates the left icon of the control bar
4 RIGHT key (White LED): emulates the right icon of the control bar
4.10 Entering text and numbers XPT801 has a virtual keyboard that is displayed when selecting a field in which text is to be entered. The virtual keyboard allows entry of character strings such as letters and numbers. The instrument also has a numeric keypad for entering both integer and floating-point numeric values.
The following is an example of text input.
1 Press in the text input field. 2 The virtual keyboard is displayed. 3 3 Press on the keys to enter the desired text. 4 Press to confirm, press to cancel the operation.
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5 Pre-use checks and operations
5.1 Unpacking and inspection
· XPT801 is shipped in a protective packaging. · Immediately report any damage to the instrument packaging to the transporter and instrument
supplier. · Verify that the shipment contains all parts and accessories for the selected configuration, see chap-
ter “5.2 Standard configuration” on page 27. · Verify that all purchased options are active in SYS-INFO/ FIRMWARE/OPTIONS. · Save the packaging for possible safe shipment to the service department.
Info
The quality level of our instruments is the result of continuous development of the instrument. This can lead to differences in the parts and accessories listed in the standard configuration and the parts that make up the instrument you have purchased. We recommend that you check with what you have ordered.
5.2 Standard configuration XPT801 is available as part of an integrated system or in a standard configuration. The following components are supplied with the standard configuration:
Component
XPT801 Sound Level Meter
MP801 preamplifier
MC801 microphone
WS90 windscreen
Certificate of Conformity
Free access to cloud storage space
Standard hard carrying case BAG8 · airtight seal · automatic pressurization valve · safety locks with push button · padlock predisposition · shoulder belt predisposition · lightweight and impact-resistant body · preformed sponge for positioning sound level meter, wind-
screen and accessories
335 x 295 x 122 mm
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The following hardware and firmware options are included with the standard configuration:
Hardware options
Basic
OH1L
Description
Code
Sound level meter, carrying case, WS90 windscreen, USB-C cable, conformity certificate
MC801 microphone (25mV/Pa) + MP801 preamplifier set
XPT801 XPT801-OH1L
Firmware options
OF3
OF8A
OF13A
OF13B
Description
Code
Statistic Analyzer: – user Ln (wideband level) – Probability and cumulative probability distribution (wideband levels)
XPT801-OF3
Event detector: – User programmable exceedances – User programmable third octave spectrum window acceptance (with OF1
options) – EVENT profile recording trigger logic – AUDIO recording trigger logic (with OF4 option)
XPT801-OF8A
Datalogger: – HISTORY profiles from 100 ms to 1 s step – GLOBALS recording
XPT801-OF13A
Advanced datalogger: – HISTORY profiles from 100 ms to 1 s step – REPORTS profiles from 10 s to 1 h step – EVENTS profiles – GLOBALS recording
XPT801-OF13B
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5.3 Options and accessories
5.3.1 Hardware accessories The table below contains only a few examples of the available hardware accessories. Additional components include, but are not limited to, microphones, preamplifiers, software, power supplies, tripods, calibrators, sensors, protective cases, adapters, and cables. For a complete list of standard and system accessories, see website www.senseca.com.
The following components can be supplied in addition to the standard configuration:
Component
HD2020 acoustic calibrator cl.1 IEC 60942, 94/114 dB @1 kHz
WSO Outdoor microphone unit
Microphone extension cable standard length 5 m, other lengths available
upon request (See 3.2 “Part numbers of main components and accessories” on page 11)
Large hard carrying case BAG8K (Supplied in conjunction with sound level meter and acoustic calibrator kit)
· airtight seal · automatic pressurization valve · safety locks with push button · padlock predisposition · shoulder belt predisposition · lightweight and impact-resistant body · preformed sponge for positioning sound level meter, wind-
screen and accessories
465 x 355 x 145 mm
5.3.2 Hardware options
Hardware options
OH3A
OH3M OH4
Description
Code
Monitor module: · RS232/485 interface · external power supply 9 V-24 V · 9 V-24 V battery charging · 5 V 500 mA output for external accessories power supply · Ethernet connection
Network module with 4G modem and GPS (needs OH3A)
Outdoor measurements: CIC management, preamplifier heater power supply
XPT801-OH3A
XPT801-OH3M XPT801-OH4
Info
Installation of hardware options is the responsibility of the Manufacturer, so you must return the instrument to perform the installation.
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5.3.3 Firmware options
Firmware options
OF1
OF1A
Description
Spectrum analyzer: · IEC 61260 octave bands from 32 Hz to 16 kHz · IEC 61260 third-octave bands from 20 Hz to 20 kHz · Real time operation from 20 Hz to 20 kHz according to IEC 61260
Spectrum analyzer: · IEC 61260 octave bands from 32 Hz to 16 kHz · Real time operation from 32 Hz to 16 kHz according to IEC 61260
Audio recording (Manual, Automatic):
· 16-bit, 24-bit or 32-bit resolution
OF4
· 12 kSmp/s or 48 kSmp/s sampling rate
· WAVE or ADPCM format
OF5S
OF5A OF9
Measurement data synchronization on NS-Storage cloud service (Push) – Manual – Automatic NS-Monitor service for local and remote instrument management
Noise Ratings NC, RNC, NR, RC (needs OF1E or OF1AE)
V1.0
Code
XPT801-OF1 XPT801-OF1A XPT801-OF4 XPT801-OF5S XPT801-OF5A XPT801-OF9
Info
Firmware options are installable by activation code after purchase. Refer to the chapter “13.4 Enabling or disabling options” on page 92.
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5.3.4 Software options
Software options
NS-Storage
NS-Monitor NS-ENS
Description
Code
NS-Storage cloud service: – Measurement data archive – Measurement data view: graphics, tables – Synchronization API – Limited storage space NS-Monitor cloud service: – Measurement control – Measurement setup – Real-time view of instrument measurements
Included
Activated via XPT801-OF5A
Environmental Noise Studio: desktop software module for advanced environmen- NS-ENS tal noise analysis. Compatible with Windows OS (min. Windows10)
Info
Software options are installable by activation code after purchase.
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5.4 Assembling and disassembling components 5.4.1 Microphone and preamplifier
Warning!
Observe the following instructions when assembling and disassembling the microphone and preamplifier: · Connect to ground so that the device is not exposed to static shock. · Clean from any dust or debris.
Forbidden!
During the assembly and disassembly of the microphone and preamplifier: · Avoid even minor shocks: the microphone may be damaged. · Never use excessive force or screw too hard. · Do not remove the microphone grid cap and expose the diaphragm. · Do not unscrew the microphone unless strictly necessary. · Do not use glue to screw in the microphone.
To connect the microphone and preamplifier.: The body of the preamplifier houses a single gold-plated stud with threading on the top edge, designed to fit the ½” microphone and a “push & pull” coupling for connection to the sound level meter.
1 Carefully place the bottom of the microphone over the top of the preamplifier and gently screw the assembly on. The body of the microphone should fit snugly against the body of the preamplifier.
2 Place the preamplifier in line with the sound level meter pins and with the red mark toward the front of the sound level meter. Insert the preamplifier firmly into the sound level meter until you hear a small click.
To disconnect the microphone and preamplifier.: 1 Gently grasp the microphone on the two etched lines and unscrew it. 2 Grasp the preamplifier firmly with one hand, with two fingers pull the ferrule outward until the preamplifier disconnects.
Fig. 9 – Connecting/disconnecting the microphone and preamplifier
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5.4.2 Windscreen When making outdoor measurements in windy weather or when making measurements on air conditioning equipment, wind noise or air movement against the microphone can generate measurement errors. Such effects can be reduced by using a wind protection bonnet.
To avoid possible measurement errors, use the windscreen on the microphone, especially when there is strong wind or substantial airflow generated by equipment.
Info
Since the wind shield can protect the microphone from accidental shocks, it is recommended to use it even during indoor measurements.
Fig. 10 – Assembly and disassembly of windscreen
5.4.3 Outdoor microphone unit Disassembly of the Unit is necessary to perform, for example, calibration (partial disassembly only) or cleaning.
Info
· To pull out the top of the unit and perform calibration, follow steps 2 and 3. · See the outdoor microphone unit manual for more information. To completely disassemble the unit, you need to have a 2 mm hexagonal Allen wrench. 1 Unscrew the unit from the holder 1/2W or 1/4W, if any. 2 Using the Allen wrench, loosen the grub screw securing the top (A) of the protection. 3 Disconnect the upper part (A) of the guard from the lower part (B) by pulling it off the sensor (D); be careful not to damage the sensor. 4 To completely remove the sensor (D), disconnect it, via push-pull connector, from the extension cable (E) and pull the cable out by passing the connector through the hole (F). To perform the assembly, proceed in the reverse way.
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Fig. 11 – Disassembly of outdoor microphone unit
5.4.4 Connect the outdoor microphone unit to the sound level meter After placing the outdoor microphone unit at the measurement site, it can be connected to the sound level meter.
1 Remove the microphone from the sound level meter, see section “5.4.1 Microphone and preamplifier” on page 32″.
2 Insert the connector of the outdoor microphone unit into the sound level meter until you hear a small click, pay attention to the orientation of the red pin.
3 If necessary, use the extension cable provided.
Fig. 12 – Outdoor microphone unit connection
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5.4.5 Mounting on a tripod
To minimize operator influence on measurements, or in the case of measurements taken over long periods, the instrument can be mounted on a standard camera tripod using the 1/4″ threaded hole on the back of the instrument, see “Fig. 1 – Hardware overview” on page 15.
5.5 Battery power supply
5.5.1 Battery power use The instrument is supplied with the battery, already inserted in the battery compartment and with the connector disconnected. Please refer to the “5.5.3 Battery insertion and replacement” on page 37 to make the correct connector connection.
The current battery voltage is displayed in the status bar, where there is a status icon with a battery symbol. Battery discharge is displayed as a progressive emptying of the symbol.
· When the remaining energy is less than about 15%, the battery status icon is empty (no notch). · A protection system prevents the instrument from making measurements with insufficient
charge levels and, if it is in measurement, performs the measurement stop automatically. If the battery level drops further to the minimum level necessary to ensure functionality, the instrument automatically shuts down. · When the battery voltage drops below 3.1 V, the sound level meter is unable to take measurements. However, it is still possible to access the data in memory and perform data downloading. Stored data and configuration and calibration parameters are retained even when the power supply fails.
Battery charge indicator The battery icon, found in the status bar, displays the charging status of the battery. When the instrument is charging or external power is being used, the background of the icon is orange.
Icon
Description
85% ÷ 100%
60% ÷ 85%
35% ÷ 60%
Icon
Description
15% ÷ 35%
0% ÷ 15%
Battery charging
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Notice!
Use only a USB-C type cable paired with a standard cell phone power supply with the features listed below and suitable for mains power supply.
Characteristics of the battery (supplied)
Type
Rechargeable battery pack Li-Ion polymer
Protection
PCM circuit for battery cell protection, temperature protection
Capacity
9000 mA (3.7 V)
Operating time
>24 h
Charge time
8-12 h depending on the charger used
Operating temperature Charging 0…+45 °C, discharging -20…+60 °C
Battery life cycles
> 500 complete discharge and recharge cycles with 80% initial capacity remaining
Power supply (not supplied)
Output
5 Vdc / 2.1 Ah / 10.5 W
When the instrument is charging, the battery charge indicator has the orange-colored icon background. If connected to PC via USB, the charging current is limited to max 500 mA. If connected to battery charger, with instrument on and low power mode, charging current exceeds 1 Ah recharging batteries in less time. Successful charging is indicated by LED in the center button.
Fig. 13 – Battery Charging 1 Connect the USB-C cable to the power supply and USB-C connector on the instrument. 2 Plug the power supply into a compatible electrical outlet. 3 When 100% charge is reached, remove the power supply and USB-C cable from the instrument.
Warning!
Do not leave the instrument on charge for longer than necessary, as soon as 100% charge is reached remove the power supply, this is to avoid overheating the battery and compromising battery life.
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5.5.3 Battery insertion and replacement
Warning!
Before proceeding with battery insertion and/or replacement, make sure the instrument surface is dry and the instrument is turned off.
Fig. 14 – Battery insertion and replacement
1 Open the battery compartment at the back of the instrument by unscrewing the battery compartment screw.
Battery replacement 2 Remove the battery from the battery compartment. 3 Unplug the battery connector.
Inserting the battery 4 Connect the battery connector, the instrument will turn on automatically. 5 Insert the battery into the battery compartment.
Notice!
Make sure that the battery and its cables are fully inserted inside the compartment before closing the cover to avoid possible damage to them.
6 Replace the cover on the battery compartment. 7 Tighten the screw on the battery compartment.
Warning! · In case of replacement use only original batteries to be ordered from Senseca Italy Srl.
Use of non-original batteries will void the warranty. · If you have any doubts regarding the type of battery to be used or its purchase, please con-
tact your local distributor for further information.
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5.6 External power supply
The instrument can be used with the power cord connected to one of the following external power sources:
· computer · power-bank · with power supply to the mains.
Using power supply via USB port When the instrument is connected to the external power supply, it can operate properly with or without batteries installed.
Notice!
If you use XPT801 without batteries and the power supply is interrupted, you may lose data.
Warning!
In case the instrument is externally powered or is charging, do not remove the power cord before turning off the instrument. Removing the power cord with the instrument still on could result in the loss of unsaved data.
Info
The instrument can also be powered with the optional RJ12 connector (12- 24 V/1 A), OH3A hardware option.
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6 Switching on and off
6.1 Switching on
1 Press the ON key briefly: · the white LEDs of the LEFT/RIGHT buttons light up · the green LED of the ON button blinks
V1.0
· the screen turns on · the splash screen is briefly displayed · the main screen appears (ICON MENU)
Note: If Auto-Load setting (10.4.3) is active, the SLM measurement screen appears directly
6.2 Display auto-off function The function, if activated, turns off the display after a predetermined time. Refer to chapter “7.4.2 Setting the display auto power off” on page 44 to enable, disable or set this function.
With Timer display function active ( icon present in the drop-down menu): · successively access the pages SETTINGS > INTERFACES > DISPLAY and set a time between 1′ and 1h; · if the instrument is not used, the display will turn off after the set time; · press any key or the display to exit the stand-by mode.
With display timer function NOT active ( icon present in the drop-down menu): · the display never turns off even if the instrument is not used for a long time.
Notice!
Using the instrument with stand-by function NOT active significantly reduces battery life, it is highly recommended to use this function.
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1 Access the ICON MENU (see “Fig. 6 Icon menu” on page 21) to display the menu control bar.
2 Press the ON/OFF icon on the control bar for 3 seconds to access the OFF panel.
3 Press the desired icon: · Upper icon to switch off the instrument · Central icon to cancel the operation and close the OFF panel · Lower icon to restart the instrument.
Warning!
In case the instrument is externally powered or is charging, do not remove the power cord before turning off the instrument. Removing the power cord with the instrument still on could result in the loss of unsaved data.
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7 Settings and Adjustments
7.1 Set current date and time
Info
If the instrument is connected to the NTP server, you do not need to set the date and time. If you want to manually set the time and ignore any synchronization, you need to change the NTP server connection setting, see the chapter “7.2 Using NTP server to synchronize date and time” on page 42.
Notice!
Stop the measurement before setting the date and time, otherwise the new setting will take effect only at the next recording stop.
1 In the ICON MENU, press the SETTINGS icon to access the system and measurement configuration menus.
1 Successively access the pages INSTRUMENT, SYSTEM and Date & time.
2 Set the date, time and possible daylight-saving time correction.
3 Press to confirm, press to cancel the operation.
4 Press on the three dots to access the panel for selecting UTC and date format: · DMY = day/month/year · MDY = month/day/year
5 Press to confirm, press to cancel the operation.
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7.2 Using NTP server to synchronize date and time
XPT801 communicates with NTP servers to synchronize the internal clock with the most accurate time. This requires a valid Internet connection via Ethernet, GSM, or Wi-Fi; to make a connection to a network, see the section “12 Network and connections” on page 85. For synchronization via NTP server to be possible, it is necessary that the parameter SETTINGS > INTERFACES > NETS > NTP service is set to ON.
1 Access the panel for setting the current date and time. 2 Activate the item Auto SYNC. 3 Press to confirm, press to cancel the operation.
Notice!
The time required for updating the date and time by NTP server depends on the network access speed. 7.3 Setting the language XPT801 has a multi-language function, and language preference can be set. For information on available languages, please refer to the sales department.
1 In the ICON MENU, press the SETTINGS icon to access the system and measurement configuration menus.
2 Successively access the pages INSTRUMENT, SYSTEM and 3 Language. 4 Set the desired language. 5 Press to confirm, press to cancel the operation.
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Notice!
Some languages may not be available with the firmware installed. Therefore, it is recommended to update the firmware periodically to have any new languages available.
7.4 Display adjustments
7.4.1 Adjusting the brightness The brightness level is displayed in the status bar through the brightness adjustment slider. There is, in addition, an icon for activating automatic brightness adjustment.
To adjust the brightness of the display:
1 Access the status bar.
2 Scroll the slider, left to decrease and right to increase the brightness.
3 If you are working in an environment with significant lighting variations, it is recommended that you turn on automatic
dimming using the appropriate icon .
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XPT801 Sound Level Meter and Spectrum Analyzer 7.4.2 Setting the display auto power off To set the display auto-off time.
1 In the ICON MENU, press the SETTINGS icon to access the system and measurement configuration menus.
2 Successively access the pages INTERFACES, DISPLAY and Display timer.
3 Select the desired auto-off time. 4 Press to confirm, press to cancel the operation.
7.4.3 Selecting the display theme
1 In the ICON MENU, press the SETTINGS icon to access the system and measurement configuration menus.
2 Successively access the pages INTERFACES, DISPLAY and Colors theme.
3 Set the desired mode. 4 Press to confirm, press to cancel the operation. Changing the selected theme is visible only by returning to the ICON MENU.
V1.0
2/2
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7.4.4 Turning the Touch display on and off With touch display activated, it is possible to operate directly on the display; if deactivated, it is possible to operate the device only through the keyboard. To reactivate the touch display it is necessary to operate through the keyboard.
To turn the touch display on and off:
1 In the ICON MENU, press the SETTINGS icon to access the system and measurement configuration menus.
2 Successively access the pages INTERFACES, DISPLAY and Display touch.
3 Select the desired option (OFF to deactivate; ON to activate the touch display).
4 Press to confirm, press to cancel the operation.
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8 Viewing modes
Info
Display modes are available by accessing the MEASURE menu from the ICON MENU.
XPT801 calculates all broadband acoustic parameters in parallel with all available weighting filters. It allows parameter calculations with linear and exponential averages. It also allows real-time and parallel calculations of broadband parameters with spectra in octave or third-octave bands. Functions for statistical analysis allow 7 percentile levels of broadband parameters; in addition, level distribution and cumulative functions are calculated.
The set of acoustic parameters selectable for display in the various graphical screens is completely independent of the set of parameters or groups of parameters selected for storage and datalogging. The parameters available for display are the full set while the parameters subject to storage are userselectable through specific panels (see datalogging setup section).
The screens available for displaying data in numerical or graphical format are described below:
SLM (Sound Level Meter) · 6 user-selectable parameters; · Difference of levels (selectable); · Bar graph of 3 broadband levels; · Display by colored icons of alarms triggered by exceeding settable thresholds; · Display date and time of occurrence of integrated parameters (e.g., Max-Min).
TABLE · All broadband parameters, weightings and time constant in parallel: Instantaneous, Average, Max-Min; · 7 x Ln broadband percentiles; · Spectrum: Instantaneous, Min, Max, Average, Ln; · Exceedances: current exceedances; · No. of occurrences (SLM, Marker, Audio).
FREQUENCY SPECTRUM (Histogram) · 1/1 or 1/3 octave histograms: up to 4 selectable with activatable/deactivatable traces. Numerical values @cursor position, Avg, Max, Min, Inst. Three broadband values histograms A, C, Z, U dependent on user setting; · Selectable linear or weighted spectrum; · Time constants: Lin, Fast or Slow; · Type: Inst, Avg, Max, Min, Rep-Avg, Rep-Max, Rep-Min, Evn-Avg, Evn-Max, Evn-Min.
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TIME HISTORY · 4 time traces of user-selectable parameters; · Three broadband values histograms A, C, Z, U dependent on user setting; · Display by colored icons of alarms triggered by exceeding settable thresholds; · 5 horizontal bar indicators representing eventualities such as audio recordings or sound events; · Positionable graphic cursor with time and level indication.
8.1 SLM mode
All displayed parameters can be freely chosen from those available. There are no constraints in the choice of frequency weightings. Measurement parameters are displayed with an abbreviated label, followed by the numerical value and the unit of measurement, possibly followed by the frequency weighting. The correspondence between the label and the actual parameter is provided in the appendix (see 19.1.2 Composition of Acoustic parameters Labels on page 103).
To display in SLM mode:
· from the home page select MEASURE menu;
· Use the icons
to access the SLM screen.
Table 4 – SLM mode
6 1 Measurement status bar:
1
· white when stopped;
· green when measurement is in progress;
2
· yellow when paused.
2 Pseudo-analog bar (dB): graphically shows 3 broadband levels
3
3 Primary parameters: with large font
4 Secondary parameters: with small font
5 Measurement control bar and context menu
4
6 Acquisition time: in hours: minutes: seconds 5
In this mode it is possible to: · Enable subtraction between two parameters: the obtained numerical value will be displayed in real time. Subtraction is possible only for the three primary parameters and not for the three secondary parameters. · Selection of parameters to be displayed. · Set Exceedances on/off. · Perform a measurement with or without recording.
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8.2 TABLE mode
Table mode provides numerical values of significant groups of preset parameters, the display of which cannot be changed, in the Instantaneous, Averages, Maximum-Minimum and SLM Exceedances screens. Spectrum screen provides numerical values in octave bands or third of octave of acoustic parameter groups selectable by touch from % (7 user-parameterizable percentile levels), Inst (instantaneous spectra), GLB (integrated max, min, equivalent), REP (max, min, equivalent, calculated at Report time intervals), EVN (max, min, equivalent).
To access the TABLE mode:
1 from the home page select MEASURE menu;
2 Use the icons
to access the TABLE screen;
3 Use the arrows on the navigation bar to display the desired items.
Table 5 – TABLE mode
1
1 Measurement status bar:
2
· white when stopped;
· green when measurement is in progress;
3
· yellow when paused.
4 2 Measurement instantaneous reference parameters
3 Page with instantaneous values
4 Display of measured values
5 Item navigation bar 5
6 Measurement control bar and context menu 6
In this mode the following items can be displayed.
INSTANTANEOUS Shows instantaneous total values (broadband).
AVERAGES Shows time-integrated measurement values of significant broadband parameter groups.
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PERCENTILE AVERAGES Shows the integrated values of the 7 percentile levels (values of the 7 percentiles that can be set in the menu SETTINGS > SOUND MEASURE > STATISTICS). The column displays:
· LN broadband values integrated with linear average;
MAXIMUMS – MINIMUMS Shows maximum and minimum integrated values of significant broadband parameter groups.
SPECTRUM Shows instantaneous, minimum, maximum and average values in thirds of an octave or octave (depending on instrument settings) or frequency band values of other selectable parameters. The parameter displayed on the column is user selectable.
SLM EXCEEDANSES Shows the following exceedances:
· parameter exceeded; · input/output thresholds; · exceedance status; · exceedances count.
MARKERS Provides a count of the number of sound events (divided by name) identified by automatic or manual marker that occurred during a measurement. A symbol representing a bell indicates whether the trigger condition of the marker or event is active or inactive.
In this mode it is possible to: · Perform a measurement with or without recording. · Display the values of all parameters in real time during measurement/recording. · For some parameters, the desired display can be set (SPECTRUM).
8.3 Octave and Third Octave display (histogram)
The frequencies and amplitudes of the sound signal analyzed through IEC61260-compliant constant percentage band digital filters are displayed in real time through a bar graph called a histogram. The graph allows superimposition and activation or deactivation of 4 different color curves related to userselectable parameters and calculation modes even during measurement.
To access the HISTOGRAM mode (ISTOG.M):
1 from the home page select MEASURE menu;
2 Use the icons
to access the ISTOG.M screen;
3 Use the icons in the display.
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XPT801 Sound Level Meter and Spectrum Analyzer Table 6 HISTOGRAM mode
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1 Measurement status bar: · white when stopped; · green when measurement is in progress; · yellow when paused.
2 Viewing options:
· the resolution (octaves or third octave) is dis-
played on the left.
· in the center the spectrum calculation pa-
rameter is selectable (LFp – LFeq)
· on the right is selectable the type of analysis for the spectrum between (Global Report –
1
Event)
2
3 1/3 or 1/1 octave spectra (depending on the
settings):
· White (black with LIGHT theme): maximum
· Blue: minimum
3
· Light blue: instant
· Orange: medium (dependent on parameter
setting)
4
4 RATING: allows, if enabled by menu (SET-
TINGS > SOUND MEASURE > SPECTRA: Noise
5
rating mode: RATING), the selection among
the rating indices NC, RNC, NR, RC
6 5 Show/hide spectrum, use the keys:
· AVG
7
· MAX
· MIN
· INST
6 Numerical values of the spectrum: · bold value line: selected cursor position · adjacent lines: previous and next frequency
7 Measurement control bar and context menu
Cursor activation: tap the touch screen · Left/right arrows: frequency selection · Up/down arrows: change full scale · Zoom icons: change interval
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In this mode it is possible to: · Evaluate acoustic Ratings; tap RATING. · Show or hide a spectrum; tap the spectrum label to display the desired plot. Label unselected is highlighted in black, for example:
· Avg OFF (Max, Min, Inst ON)
· Avg + Min OFF (Max, Inst ON) · Navigate within the histogram; tap the histogram to display the cursor (red vertical line), use the
display icons to move frequency and increase/decrease scale.
Info
For the complete list of values that the parameter “Spc_analysis_type” can take, see the section “19 Appendix B Parameters” on page 103.
8.4 Time History display
The Time History graph represents the time profile of several user-selectable acoustic parameters within a time window of defined width. The graph allows visual appreciation and numerical evaluation of the levels of sound events and their amplitude changes as a function of time. In parallel, it allows visual evaluation of the occurrence of sound events automatically detected by the sound level meter or manually highlighted by the operator during measurement for later analysis using post processing software NS-ENS.
1 Horizontal bar indicators of events (e.g., audio recordings or markers)
1
2 Time history plots display area
4
Of user-selected parameters
3 Parameters Area
2
Select – Activate parameters
Values at cursor position display
5 4 Graphic cursor
5 Broadband histograms: are shown three
3
broad-band among the four selectable ones
(A, C, Z, U)
Info
The selection of parameters to be associated with the 4 curves available for the time history graph, can be made through selection wheels. Tap on the parameter to display selection wheels
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9 Getting started: Main Functions
The most frequently used functions are described below; for a complete discussion of the instrument operation and settings, see the section “10 Advanced functions” on page 66.
9.1 Calibration Sound level meter calibration (adjustment) should be carried out periodically, normally before and after each measurement session, in order to ensure the validity of the measurements made by the sound level meter, as the sensitivity of the microphone and the response of the electronic circuits may vary slightly over time or may be affected by environmental conditions such as temperature, atmospheric pressure and humidity. Acoustic calibration also includes internal electrical calibration. Electrical calibration enables the alignment of electrical parameters in the measurement chain
Info
· More information on calibration settings can be found in the chapter “10.1 Setting the calibration parameters” on page 66 “.
· Before starting the calibration procedure, carefully read the calibrator manual provided with the calibrator.
Notice!
·It is recommended to use the model HD2020 calibrator, supplied upon request ·Another class 1 calibrator conforming to IEC60942 and with 1/2” cavity can be used, after
verifying compatibility and technical specifications. ·When using class 1 calibrators alternative to the HD2020 model, the nominal emission
level stated in the calibration certificate must be verified, and the “Cal_Level” parameter in use in the menu related to the calibration setup must be adjusted. If stated by the manufacturer, corrections per load volume should be considered.
Before performing an acoustic calibration: · make sure that the environment in which you are operating is suitable: no sudden noise, no vibration are present on the supporting surface, thermal stability of the instrument; · make sure that the microphone and especially the microphone diaphragm are clean; in case a check of the condition of the microphone capsule is to be performed, refer to “14.2 Microphone cleaning (microphone diaphragm)” on page 93; · in case of accessories installed on the instrument, such as a windshield if any, or if you want to customize the calibration settings, refer to section “10.1.1 Setup” on page 66; · make sure that there is no measurement in progress; if it is, it must be stopped before starting calibration.
To perform a calibration: 1 Turn off the sound calibrator. 2 Carefully insert the microphone all the way into the cavity of the calibrator. 3 Turn on the XPT801 sound level meter. 4 Follow any specific recommendations in the calibrator manual in this regard.
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5 In the ICON MENU, press the SYS-FUNC icon to access the system app menus.
6 Access the CALIBRATION, PROCEDURE pages in succession.
7 Set in the “Expected” field, if not yet set in the calibration setup (CALIBRATION > SETUP > Level), the nominal value stated by the manufacturer or taken from calibration certificate, of calibrator output (e.g., 94.00) at 1KHz frequency.
000000000000 000000000000
8 Press “Play” to start the reading.
9 If the level is enough stable, press “CAL” to start the adjustment procedure.
10 The “CAL” button remains inactive until the calibration procedure is finished, so calibration corrections are not allowed.
Curr.Att.Time 18:46:12
11 When done, turn off the sound calibrator, slide the microphone out of the cavity.
When the calibration is completed, the date, time and correction are updated. Access to the Calibration history panel is allowed only after the calibration is completed.
9.2 Setting the duration of a measurement
Notice!
If the measurement duration is not set, the measurement will not be interrupted unless manually or when the memory or battery runs out.
1 In the ICON MENU, press the SETTINGS icon to access the system and measurement configuration menus.
2 Access the SOUND MEASURE, SETUP and Measure Timer pages in succession.
3 Select the measurement duration.
4 Press to confirm, press X to cancel operation.
MEASURE_TIMER
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9.3 Select acoustic parameters to be displayed
The XPT801 sound level meter is capable of simultaneously calculating a very large set of broadband, frequency-band acoustic parameters with different spectral weightings in parallel. Thanks to this feature, it is possible for the user to change at any time, and even with measurement in progress, the parameters displayed in the available screens; thus, the possibilities for investigation of the sound phenomenon in progress will be virtually unlimited
Info
Editing the displayed parameters is also available from the context menu by selecting EDIT VIEW.
1 In the ICON MENU, press the MEASURE icon to enter the measurement panel.
2 Touch the SLM parameter to be set (example LAeq).
3 Press on the parameter name (e.g. LAeq) and select the new parameter and available options: · First column: here all available parameters classes appear (example LXeq). See. “19.1.3 Classes of measurement parameters available for visualisation” on page 105 · Second column: here you can choose the available options (Weighting or frequency band). · Third column: here you can choose the available options (Integration mode).
For a complete description of the available parameters and options, see the section “19 Appendix B Parameters” on page103.
Info
It is also possible to: ·perform subtraction between two parameters, see chapter “9.5 Subtraction of two
acoustic parameters” on page 58. ·set alarms and exceedances, see chapter “9.7 Set alarms on exceedances” on page 60.
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9.4 Set acoustic parameters to be stored
The XPT801 sound level meter allows parallel storage of a very large set of acoustic parameters with sampling down to 100 ms. Through the Time History, Globals storage groups, the user has logging tools that allow recording of sound phenomena with high temporal resolution. The Time History and Globals storage groups can be used simultaneously, providing the acoustician with a versatile logging tool that can be adapted to any need.
Info
All modified settings remain stored in the “current” and reloaded at power-up. The current setup, if modified, will be followed by an asterisk to indicate to the user that an unsaved change has occurred. If the user wishes, he/she can store the complete set of settings in a setup file by accessing APPLICATION MANAGER which is the application from which to manage the storage of the customized settings, see chapter “10.4 Custom measurement setups” on page 71.
MEASURE > EDIT APP > LOG >
· SETUP: setting of general log parameters such as sampling step, moving window, activation/deactivation of storage for specific analysis, time synchronization mode of storage.
· TIME HISTORY: activation/deactivation of storage of Instantaneous, Maximum, Minimum, Integrated acoustic parameters, in Time History group.
· REPORTS: activation/deactivation of parameter storage and report interval, in Report group. · EVENTS: activation/deactivation of storage of stored parameters, in Event group. · GLOBALS: activation/deactivation of parameter storage in Globals group. Setting the calculation
mode CONT or DAILY (Tba). · AUDIO: activation/deactivation of audio recording in Continuous or Event mode. Setting of sam-
pling and resolution characteristics, compression and maximum duration of audio recording.
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1 In the ICON MENU, press the MEASURE icon to access the measurement panel.
V1.0
2 Tap on the context menu and select EDIT APP.
3 Select LOG.
4 Select the required datalogging group (example TIME HISTORY).
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5 Tap the check box to select one or more parameters to be recorded.
Info
The Time History logging interval setting can be found on the EDIT APP > LOG > SETUP page.
V1.0
Info
The Reports logging interval setting can be found on the EDIT APP > LOG > REPORTS panel
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9.5 Subtraction of two acoustic parameters
For specific measurement applications, it may be necessary to directly detect the level difference between two acoustic parameters whose correlation is significant for the evaluation of a sound event. The XPT801 allows direct display calculation of the difference between any two freely selectable acoustic parameters such as, for example, LAIeq – LAeq to evaluate the impulsive character of a sound source, LCeq LAeq in noise exposure assessment or PPE evaluation using the HML method
1 In the ICON MENU, press the MEASURE icon to access the measurement panel.
2 Select the parameter to which you want to apply the subtraction (example LASp),
Info
it is only possible for the three primary parameters (big numbers) and not for the three secondary parameters (small numbers)
3 Tap on the center field to activate the subtraction function, the ” – ” subtraction sign appears.
4 Tap the right field to select the second parameter. 5 Press to confirm, press X to cancel operation.
Info
To modify the displayed parameters, see “9.3 Select acoustic parameters to be displayed” on page 54.
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XPT801 Sound Level Meter and Spectrum Analyzer 9.6 Load a custom configuration To load an existing configuration, follow the steps below.:
1 In the ICON MENU, tap the APPLICATION MANAGER icon to access to the custom measurement app selection and management panel.
2 Select and load the configuration by tapping on it directly Or: 3 tap at least 2 seconds and use the context menu controls. Se-
lect LOAD
V1.0
4 The configuration is immediately activated and ready for use.
Info
The name of the loaded configuration is shown on the upper left part of the screen
Info
For a full explanation of custom configurations, see the chapter “10.4 Custom measurement setups” on page 71.
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9.7 Set alarms on exceedances
The function allows specific actions to be automatically triggered when specific conditions are reached such as exceeding a certain noise level detected by the instrument for a certain acoustic descriptor. Reaching the triggering conditions can, for example, automatically generate recording of the audio signal when the noise level exceeds a certain value and stopping recording when the level returns below the set value.
1 In the ICON MENU, tap on the MEASURE icon to access the measurement panel.
2 Tap on the SLM parameter to be set.
3 Select the parameter used for exceedance/alarm, to change the parameter to be set see chapter “9.3 Select acoustic parameters to be displayed” on page 54.
4 Tap the bell to activate (the bell turns red when active).
5 Tap the three dots to set the threshold.
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6 Enter the threshold values, mode and duration (see also “20.1 Exceedances settings” on page 111). Changes are directly activated by going back.
V1.0
7 The black bell indicates that the alarm is ready and waiting for the threshold to be exceeded.
8 Description example of exceedance/alarm status.
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9.8 Starting and stopping a measurement
The XPT801 sound level meter allows measurements of sound levels even without data storage. The two measurement modes, with and without datalogging, use common acoustic descriptors calculation functions. Through the graphical interface, the choice of measurement mode is made by means of commands available on the measurement control bar. In the status bar, a specific icon indicates the active measurement mode.
Notice!
· With this mode, there is no recording of measurements. Values will not be stored, only displayed.
· When measuring outdoors with high humidity and using the outdoor microphone unit, it is recommended to use the preamplifier heater, see “10.7 Activating the preamplifier heater” on page 77.
1 In the ICON MENU, press the MEASURE icon to access the measurement panel or select a pre-configured configuration, see chapter “9.6 Load a custom configuration” on page 59.
2 Tap the left icon of the control bar to perform the measurement without datalogging.
3 Measurement in progress (see the green arrow measurement icon in the upper right corner).
4 Tap the left icon to PAUSE, press again to resume measurement.
5 Tap the right icon to STOP measurement, no data will be stored.
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9.9 Starting and stopping a measurement with datalogging
The XPT801 sound level meter enables measurements of sound levels with data storage. The measurement mode uses common calculation functions. Through the graphical interface, the choice of measurement and storage mode is made through commands available on the measurement control bar. In the status bar, a specific icon indicates the active measurement mode. The measurement mode with logging assumes that the user has set the desired measurement parameters in the LOG menu. The LAeq parameter is always stored even if the user has not selected any parameters.
Notice!
· With this function, the measurement is recorded, the data will be stored. · When measuring outdoors with high humidity and using the outdoor microphone unit, it is
recommended to use the preamplifier heater, see “10.7 Activating the preamplifier heater” on page 77.
1 In the ICON MENU, press the MEASURE icon to access the measurement panel or select a pre-configured setup, see chapter “9.6 Load a custom configuration” on page 59.
2 Tap the right icon of the control bar to perform the measurement with datalogging.
3 Measurement in progress (see the red circle measurement icon in the upper right corner).
4 Tap the right icon to STOP measurement, data will be automatically stored.
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9.10 Recording an audio manually
The Audio function allows the sound signal from the sound level meter transduction chain to be recorded at the same time as the measurement parameters. The signal thus recorded can be used for replay by means of an audio playback program or through the NS-ENS software module. The instrument allows recording to be triggered either manually or automatically through user-settable trigger functions. Manual and automatic modes can also be used in conjunction during a measurement.
Info
To setup the instrument correctly, please refer to the chapter “10.3 Setting audio recording parameters” on page 69.
Notice!
With this function, audio recording and measurement recording are carried out simultaneously.
1 Start a measurement with recording, see chapter “9.9 Starting and stopping a measurement with datalogging ” on page 63.
2 The measurement with recording is running (see the red circle recording icon in the upper right corner).
3 Tap the “audio” icon on the left to start an audio recording.
4 The audio recording icon turns green when audio recording is active. The icon in the upper right corner indicates the status of audio recording.
5 Tap the “audio” icon again to stop audio recording. 6 Tap the right icon to stop recording the measurement.
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9.11 Manually add markers to the measurement
The MARKERS function allows specific time portions of the measurement to be highlighted with markers. The markers can be associated with specific user-customizable names such as Car, Truck, Aircraft, etc. The time portions thus highlighted are stored in the data file synchronous with the measurements and can be viewed using the NS-ENS analysis software with which its levels can be evaluated.
Notice!
This function is only available during a measurement with recording.
1 Start a measurement with recording, see chapter “9.9 Starting and stopping a measurement with datalogging ” on page 63.
2 The measurement with recording is running (see the red circle recording icon in the upper right corner).
3 Tap the context menu and select MARKERS.
4 Tap the left/right arrows to select the desired marker name. 5 Tap the marker name to apply the marker
6 Active marker, Tap the marker name again to stop.
7 Select BACK with the arrows and tap to exit the markers
Info
To add and customize markers refer to the chapter “10.5 Customizing markers” on page 73.
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10 Advanced functions
10.1 Setting the calibration parameters The XPT801 sound level meter, with the standard transduction chain consisting of the MP801 preamplifier and model MP801 class 1 free-field microphone, is adjusted at the factory and delivered calibrated. Adjustment with a class 1 sound calibrator should be carried out periodically, normally before and after each measurement session, to ensure the validity of the measurements made by the sound level meter, as the sensitivity of the microphone and the response of the electronic circuits may vary slightly over time or may be affected by environmental conditions such as temperature, atmospheric pressure and humidity. In addition, XPT801 has an internal compensation function for environmental conditions corrections.
10.1.1 Setup The instrument allows settings of the following parameters:
· Acoustic Field corrections; · Windscreen and Outdoor microphone protection corrections (Shield correction); · Emission level of sound calibrator used (Level); · Calibration mode, manual or automatic.
To setup the calibration parameters of the instrument:
1 In the ICON MENU, press the SYS-FUNC icon to access the system and measure configuration menus.
2 Access the CALIBRATION and SETUP pages in succession. 3 Set the desired parameters.
Acoustic field With the supplied MC801 microphone, which has a frequency response optimized for “Free Field” (FF), if the parameter is set to “Free Field” (FF), correction is applied accordingly. Correction by random incidence can be enabled by setting the parameter to “Random Incidence” (RI). This setting is necessary for surveying in accordance with ANSI standards. For example, in case you choose a microphone with frequency response optimized for “diffuse field,” the normal setting is “Random Incidence” (RI). You can enable correction for making free-field measurements by setting the parameter to “Free Field” (FF). This setting is necessary for measurements in accordance with IEC standards. Correction applied for the use of WS90 or WSO windscreens (Shield correction) Allows the sound level meter’s frequency response to be corrected when either the windscreen WS90, supplied with the sound level meter, or the outdoor protection kit WSO is used. When this parameter is set to WS90, WSO the sound level meter’s frequency response is corrected for the pres-
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ence of the windscreen or outdoor protection respectively.
Calibrator emission level (Level) This is the nominal emission value of the acoustic calibrator used for adjustment of readings; it is stated by the manufacturer or obtained from calibration certificate. The instrument must be set to the same level by setting precisely the Cal_level parameter; the possible range is 90.00 ÷ 130.00 dB.
Correction applied after calibration (Correction) The current correction level is shown after a successful calibration procedure. The correction level expressed in dB, indicates the level difference applied by the calibration algorithm from the factory calibration.
Calibration mode The following options are available:
· Manual (MAN); · Automatic (AUTO).
Automatic: when Calibration Mode is set to AUTO, the instrument uses detectors to automatically detect the presence of a calibration tone in the signal coming from the microphone. When the calibration tone is detected, a pop-up prompts the user to perform calibration.
Info
For a complete description of the available parameters and options, see the section “19 Appendix B Parameters” on page 103.
10.1.2 Calibrations History
The XPT801 sound level meter, after each adjustment, stores in the “Calibration History” page the results of the calibration procedures performed with the date, time, and correction factor in dB compared to the factory calibration stored in the device.
1 In the ICON MENU, press the SYS-FUNC icon to access the system app menus.
2 Access the CALIBRATION and PROCEDURE pages in succession.
3 Access the panel “Cal. History.”.
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10.2 Setting triggers
The XPT801 sound level meter has an advanced user-configurable trigger feature. Based on the input parameter setting, the trigger automatically generates “actions” useful for identifying and measuring sound events or sending an analog signal on the I/O output (trigger out) for other types of uses such as triggering external devices. Triggering can be set through parameters such as both broadband and frequency band sound level thresholds, duration, positive or negative polarity, and pre-trigger time. For details on triggering parameters refer to the section “19 Appendix B Parameters” on page 103.
1 In the ICON MENU, press the MEASURE icon to access the measurement panel.
2 Tap on the context menu and select EDIT APP.
3 Tap TRIGGER and INPUT in succession to access the TRG Input page.
4 In the SLM panel, tap the check box to activate the input parameters for trigger/event, among those to which surplus has been previously assigned, and the desired logic (AND/OR). Parameter in grey have no exceedance activated.
5 Press to confirm, press to cancel operation.
Info
Available parameters for triggering depend on the alarm/exceedances settings, see chapter “9.7 Set alarms on exceedances” on page 60.
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10.3 Setting audio recording parameters
It is possible to set the instrument to record an audio signal while logging acoustic values. You can, in addition, set parameters, such as the duration, bandwidth, and resolution of the audio recording.
1 In the ICON MENU, press the MEASURE icon to access the measurement panel.
2 Tap on the context menu and successively select EDIT APP > LOG > AUDIO and the parameter to be set: · Audio logging (Log_audio_mode); · Audio resolution (Log_audio_res); · Sampling rate (Log_audio_samp); · Audio format · Maximum duration (Log_audio_duration).
3 Set the desired parameters. 4 Press to confirm, press X to cancel operation.
10.3.1 Audio recording mode By acting on the “Log_audio_mode” parameter, audio logging can be set to:
· disabled (OFF): durante la registrazione dei dati non avviene nessuna registrazione audio; · continuous audio recording (CONT): the audio signal is stored without interruption until the
end of the measurement with datalogging. · event-driven audio recording (TRG); audio recording, during a measurement with datalogging, is
activated only when the set trigger condition is reached and is deactivated when the trigger condition is no longer satisfied.
Continuous audio recording During “continuous” audio recording, the audio signal is stored without interruption until the end of the measurement.
Event-based audio recording During “event-driven” audio recording, the audio signal is stored only when the set trigger condition is reached and is deactivated when the trigger condition is no longer met. It is possible, during the same measurement, to record another audio if the set trigger condition is met again.
To enable event-based audio recording, it is also necessary to set and activate the exceedances on the desired parameter as well, as described in the chapter “9.7 Set alarms on exceedances” on page 60.
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1 In the ICON MENU, press the MEASURE icon to access the measurement panel.
2 Tap on the context menu and select in succession EDIT APP > TRIGGER > INPUT.
3 In the SLM panel, tap the check box to activate the input parameters for trigger/event, among those to which exceedance has been previously assigned, and the desired logic (AND/OR)
4 Press to confirm, press to cancel operation.
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10.3.2 Audio recording resolution It is possible to set the amplitude resolution of the audio signal. Higher resolution (e.g. 32 bits) corresponds to larger .wav files.
Parameter Audio resolution: you can select the resolution from the following values: · 16 bit · 24 bit · 32 bit
10.3.3 Audio recording sampling frequency The audio signal sampling frequency can be set. A higher sampling rate (e.g., 48 KSmp/s) corresponds to a higher bandwidth. The selection of the sampling frequency affects the size of the stored wav files; for example, a recording at 12KSmp/s, for the same duration, will have a lower memory occupancy than a recording at 48 KSmp/s; however, sounds over 5 KHz will not be audible in recordings made at 12 KSmp/s.
Sampling rate parameter: you can select the audio band from the following values corresponding to: · 5k (12KSmp/s) · 20kHz (48KSmp/s)
10.3.4 Setting a duration limit to audio recordings
Maximum duration parameter: you can select the maximum duration from the following values: · INF (no duration set, audio recording stops when data logging is finished) · 10s 1m; 2m; 5m; 10m; 30m; 1h (audio recording stops when the set time is reached)
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10.4 Custom measurement setups
In the APPLICATION MANAGER section, the user is provided with a comprehensive manager of custom applications. The manager allows simple and fast operations such as selecting and loading setups or custom measurement applications for on-the-fly activation of the instrument with the desired settings for a specific measurement. The manager also allows the user to store one or more custom setups by assigning them a name and description, creating a database of setups that can be recalled as needed
For each setup, it is also possible to activate specific attributes for modification protection (Lock) or self-loading (Autoload).
10.4.1 “Current” Configuration
“Current” Is a configuration that is always available in the device and cannot be deleted (red icon ) · Current is the in-use configuration. You can change the settings that will be retained even after the instrument is turned off. To save local changes, it is necessary to create a custom configuration with the “SAVE AS” command.
Notice!
“Current” configuration cannot be deleted.
10.4.2 Load, Edit, Save as, Delete functions In the APPLICATION MANAGER section, it is possible to load an existing configuration, edit, save a new one, and delete configurations that are no longer used.
User-created configurations have the green icon , can be edited and deleted.
Info
To load a custom configuration, please refer to the “9.6 Load a custom configuration” on page 59.
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1 In the ICON MENU, press the APPLICATION MANAGER icon to access to the custom measurement app selection and management panel.
2 Select the configuration by tapping it for at least 2 seconds or by using the arrows and context menu commands.
3 The following operations are possible: · CLOSE = closes the context menu · LOAD = loads the selected configuration · SAVE AS = creates a new configuration from an existing one · EDIT: allows to activate attributes Lock and Autoload; consult section “10.4.3 “Lock” and “Auto-Load” ” on page 73 · DELETE = cancel selected configuration, “Current” cannot be deleted
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To create a new configuration:
4 After selecting SAVE AS fill in in the required fields.
5 Press to confirm, press to cancel operation. 6 The new configuration (example “configuration_1”) appears in
the list, to be used it must first be loaded with the LOAD function (context menu) or directly tapping on it
configuration_1 #11/05/24 18:58:45
To delete a configuration created by the user: 7 simply tap on the configuration name for at least 2 seconds
and press on DELETE in the context menu, you will be prompted to confirm, press OK.
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10.4.3 “Lock” and “Auto-Load” attributes Each setup/application can be customized with Lock and Auto-Load attributes.
· LOCK: the application/setup is protected from overwriting · AUTOLOAD: the application/setup with Auto-Load attribute activated (only one application at a
time can have the attribute activated), is automatically loaded when the instrument is turned on and the related measurement screen is directly displayed
Lock and Auto-Load attributes can only be activated in APPLICATION MANAGER.
3
1 In the ICON MENU, press the APPLICATION MANAGER icon to access the custom configuration selection and management panel.
2 Select the configuration by tapping it for at least 2 seconds or by using arrows and context menu controls.
3 Tap EDIT and activate check box “Lock” or “Auto-Load” or both.
configuration_1
#11/05/24 18:58:45 Lock
Auto Load
10.5 Customizing markers It is possible to select markers to be available during a measurement to “mark” specific events, as well as to add new ones, change their names and settings. To use markers during a measurement, see the chapter “9.11 Manually add markers to the measurement” on page 65.
1 In the ICON MENU, press the MEASURE icon to access the measurement panel.
2 Tap on the context menu and select in succession EDIT APP, TRIGGER, INPUT.
3 In the MRK panel tap the check box to activate the markers to be made available during measurement.
4 Tap the three dots to access the customization panel for each marker to change its name
5 Press to confirm, press X to cancel operation.
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10.6 Continuous measurements datalogging
The XPT801 sound level meter allows the parallel storage of a set of acoustic parameters with sampling rates down to 100ms. Through the Time History, Report, Events, Globals storage groups, the user has tools at his disposal to record sound phenomena both with high temporal resolution and with integrated sampling over medium or long times, thus being able to quantify sound emissions on an hourly or daily basis. In addition, the storage of time histories and calculated noise parameter values of events is also possible independently of the continuous storage of levels, saving the user, if necessary, from storing data not of interest. The Time History, Report, Events and Globals storage groups can be used simultaneously, providing the acoustician with a versatile and adaptable logging tool for every need.
10.6.1 Recording Configuration
1 In the ICON MENU, press the MEASURE icon to access the measurement panel.
2 Tap on the context menu and successively select EDIT APP, LOG, SETUP and the parameter to be set from the following: · History interval · Measure name (Log_name) · max file size (Log_file_size) · Log synchronization (Log_sync) · Sync Files (Log_sync_type) · Start of Reports (Report_sync) · Sync. backlog (Sync_files)
3 Set the desired options.
4 Press to confirm, press to cancel operation.
Info
You can change the same parameters from ICON MENU by tapping the SETTINGS icon and DATALOGGER > SETUP page.
History interval Allows you to set the sampling step, i.e., the period between storing one sample and the next, of the acoustic parameter (or groups of acoustic parameters) selected.
Measure name (Log_name) A user-editable prefix e.g. MYNAME_DATE_TIME can be applied to the folder name automatically generated with each log, characterized by default by the date and time of the measurement.
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Log file max size (Log_file_size) Limits the size of files generated during continuous recording to a user-selectable value in MB (1, 2, 5, 10, 20, 50, 100MB). Files thus generated within the folder are named, for example, as history_0001.dodl, history_0002.dodl. An automatic queuing function present in the management software and in the NS-Storage portal allows the records divided as follows, to be merged into a single trace.
Log synchronization (Log_sync) Activates the automatic data synchronization mode on cloud. The function can be activated directly
with the button in the drop-down menu. If log_sync is on, storage support cannot be accessed via USB
Sync files (Log_sync_type) Allows selection of file types to be synchronized to cloud among: Globals, Audio.
Start of Reports (Report_sync) If set to “CLOCK” it aligns the calculation time window of Report parameters with the nearest “round” time. For example, if Report_Step set to 1h and Report_sync set to clock, the integration time window will go from 9:00 to 10:00, 10:00 to 11:00, and so on. If Report_sync set to “MANUAL” and Report_step set to 1h, the integration window will go from the time of measurement start (e.g. 08:45:00) to the next hour (e.g. 09:45) and so on.
Sync backlog (Sync_files) View the list of files waiting for synchronization
10.6.2 Continuous datalogging of Time History group
Continuous recording of the “time history” group includes subgroups of Instantaneous (Inst), Maximum and Minimum (Mx Mn), Integrated (Avg) and Auxiliary (Aux) parameters.
For each subgroup it is possible to select by checkbox one or more parameters that are stored with user-defined step (menu SETUP > History interval), displayed at the top of the parameter selection panel.
When for the “Time history” group, the user selects at least one parameter, the log function of the instrument, stores in the memory at least one file of the type history.dodl. A folder identified by date and time, containing *.dodl files, is created with each measurement. The folder may contain other types of files with specific functions
Info
For more details on the acoustic parameters (Parameter Classes) that can be stored through the “time history” group, please refer to the section “19 Appendix B Parameters” on page 103.
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10.6.3 Continuous datalogging of Reports group The continuous recording function of the “Reports” group allows the selection of one or more acoustic parameters with storage interval independent of the storage interval set for the “time history” group. The storage interval (Report step) can be set by the user directly from the parameter selection window via the drop-down menu in EDIT APP > LOG > REPORTS.
When for the “Reports” group, the user selects at least one parameter, the log function of the instrument, stores in the memory at least one file of the type reports.dodl. A folder identified by date and time, containing *.dodl files, is created with each measurement. The folder may contain other types of files with specific functions.
Info
For more details on the acoustic parameters that can be stored through the “Reports” group, please refer to the section “19 Appendix B Parameters” on page 103.
10.6.4 Datalogging of Events group
The “Events” group includes parameters related to specific sound events, calculated, for example, following the activation of a trigger, for an integration time Te (individual event duration).
When for the “Events” group, the user selects at least one parameter, the log function of the instrument, stores at least one file of the type events.dodl. For each measurement, a folder identified by date and time is created, containing *.dodl files. The folder may contain other types of files with specific functions.
Info
For more details on the acoustic parameters that can be stored through the “Events” group, please refer to the section “19 Appendix B Parameters” on page 103.
10.6.5 Recording Globals group
When for the “Globals” group, the user selects at least one parameter, the log function of the instrument, stores in memory at least one file of the type Globals.dodl. With each measurement, a folder identified by date and time is created, containing *.dodl files. The folder may contain other types of files with specific functions.
At the top of the Global parameter selection panel (EDIT APP > LOG > GLOBAL), you can select the calculation mode (Log_globals_mode) between CONT (Continuous) or DAILY (Daily). With CONT mode selected, the integration of global parameters continues after time 00:00 and ends when the measurement is stopped. With DAILY (Tba) mode selected, the integration of global parameters ends at time 00:00 and resumes, after integration reset, with a new integration of data after time 00:00 and ends the next time 00:00 or upon STOP by the operator
Info
For more details on the acoustic parameters that can be stored through the “Global” group, please refer to the section “19 Appendix B Parameters” on page 103.
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10.7 Activating the preamplifier heater
Notice!
Activation of the heater increases energy consumption and reduces autonomy.
Humidity in the air, coming into contact with cold surfaces, can generate condensation. In particular, the metal components of the transduction chain consisting of the preamplifier and microphone capsule can be affected by condensation, which can cause disturbance with the measurement and, in severe cases, damage to the transduction chain. The heater (opt. OH4) inside the preamplifier, in conjunction with the WSO outdoor microphone protection, reduces the risk of damage to the transduction chain and ensures that measurements are not affected by high levels of humidity on the microphone capsule membrane.
1 In the ICON MENU, press the SETTINGS icon to access the system and measurement configuration menus.
2 Access pages SOUND MEASURE > SETUP and Preamplifier heater
3 Select the desired option (OFF = heater off; ON= heater on).
4 Tap to confirm, tap X to cancel
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10.8 Monitor
The XPT801 sound level meter has a monitoring program to check some hardware functions.
The following parameters are checked: · Battery voltage; · Battery level; · Temperature · Pressure · Charge voltage · Preamplifier temperature
1 In the ICON MENU, press the SYS-INFO icon to access the system app menus.
2 Access the MONITOR page.
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11 Managing measurement data files
Each time a measurement with logging is performed, a folder is created in the active storage device containing data files with the extension *.dodl and other file types.
The folder path is as follows:
Unit_name:XPT801_My_serial_numberMeasureyyyyMMdd_hhmmss .
If the parameter SETTINGS > DATALOGGER> SETUP > Log_sequence = OFF, the instrument creates a folder with the start date and time of the new acquisition in the name. In this way, each measurement corresponds to a new folder.
*If the parameter SETTINGS > DATALOGGER > SETUP> Log_sequence = ON, the measurements are stored in the same folder and the name of each data file is preceded by a sequential numbering such as: 0001_globals.dodl, 0002_globals.dodl for globals-type data files, or 0001_history.dodl, 0002_history.dodl for time history-type files, and so on for other types of data files such as Reports, Events, etc.
Although the XPT801 instrument has 4GB of available internal memory and a µSD memory slot (TBA), other storage options are available:
· Cloud: manual or automatic upload of data to NS-Storage web service
11.1 Setting the data file storage unit (Tba) The instrument allows you to use the internal eMMC memory or alternatively an µSD memory card.
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11.2 Information on data file naming Structure and naming of the folder containing data files with the *. dodl extension and other file types.
11.2.1 Parameter Log_sequence = OFF (SETTINGS > DATALOGGER> SETUP > Log_sequence)
With the parameter Log_sequence = OFF, data files are stored in different folders for each measurement taken. With each new measurement, a folder is created with a name corresponding to the date and time the measurement started..
Example: Unit_name:XPT801_My_serial_numberMeasure20240527_104537 globals.dodl Unit_name:XPT801_My_serial_numberMeasure20240528_160825 globals.dodl
Files contained in the folder relating to a measurement (parameter Log_sequence = OFF):
Type Globals History Reports Eventi
Audio
File name globals.dodl history.dodl reports.dodl events.dodl audio0001.wav audio0002.wav
11.2.2 Parameter Log_sequence = ON* (SETTINGS > DATALOGGER> SETUP > Log_sequence)
With the parameter Log_sequence = ON the data files of one or more measurements are stored in the same folder, the name of the data files will be preceded by sequential numbering.
Example: unit_name:XPT801_My_serial_numberMeasure20240529_152256001_globals.dodl unit_name:XPT801_My_serial_numberMeasure20240529_152256002_globals.dodl
Files contained in the folder (parameter Log_sequence = ON):
Type Globals History Reports Events
Audio
Sequence 0001 0002 0001 0002 0001 0002 0001 0002
0001
0002
File name 0001 _globals.dodl 0002 _globals.dodl 0001_history.dodl 0002_history.dodl 0001_reports.dodl 0002_reports.dodl 0001_events.dodl 0002_events.dodl 0001_audio0001.wav 0001_audio0002.wav 0002_audio0001.wav 0002_audio0002.wav
* Function Tba
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11.3 Using the data file Archive The measurement records made in datalogging mode are stored in the device and visible in preview mode via the ARCHIVE function. The archive function only displays data stored in the eMMc memory device. The preview mode displays the main measurement information and also has features such as:
· Measurement list · Filter · Manual synchronisation on cloud · Voice note
11.3.1 Visualisation of data files The measurement data files can be viewed in the ARCHIVE section.
Notice!
With a measurement in progress, the archive only allows access to the list of measurements. It is not possible to view archived data.
1 In the ICON MENU, press the ARCHIVE icon
2 Tap icon to view the complete list of measurements 3 The list of recordings identified by the name of the storage
folder with date and time is displayed
4 If necessary, press the central icon (FILTER) 5 Enter the search string in the field to display only specific meas-
urements
6 Tap the central icon in the control bar to confirm the display filter settings and access the filtered list
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7 Use the arrows (UP/DOWN) and the central icon (OK) to access the measurement data management menu.
8 Tap LOAD FILE to access
Documents / Resources
 |
senseca XPT801 Sound Level Meter and Spectrum Analyzer [pdf] Instruction Manual XPT801 Sound Level Meter and Spectrum Analyzer, XPT801, Sound Level Meter and Spectrum Analyzer, Meter and Spectrum Analyzer, Spectrum Analyzer |