PROEL DMP88 Digital Matrix Processor Instruction Manual

DMP88 Digital Matrix Processor

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Specifications:

• Product Name: DMP88 Digital Matrix Processor
• Model Number: 96MAN0185-REV.23/24
• Language: English

Product Information:

The DMP88 Digital Matrix Processor is a versatile audio
processing unit designed for professional applications. It features
advanced functions to enhance audio quality and control in various
setups.

Product Usage Instructions:

Important Safety Instructions:

1. Read and keep the user manual for reference.
2. Follow all warnings and instructions provided.
3. Avoid using the apparatus near water.
4. Clean the device only with a dry cloth.
5. Ensure proper ventilation by not blocking any openings.

Operating Guidelines:

1. Ensure the power cord is not pinched or walked on.
2. Use only manufacturer-specified attachments and
   accessories.
3. Unplug during lightning storms or extended periods of
   non-use.
4. Refer servicing to qualified personnel if the apparatus is
   damaged.

Conditions of Use:

The product complies with various directives including EMC, LVD,
RoHS, and WEEE. It is designed for professional applications and
continuous use.

Description:

The DMP88 Digital Matrix Processor offers main functions that
allow users to customize audio sequences based on specific
requirements. It is equipped with essential indicators like PWR LED
for power status and SYS for operation status.

FAQ:

Q: Can I use the DMP88 near water sources?

A: No, it is recommended to avoid using the apparatus near water
to prevent electric shock hazards.

Q: What should I do if the power cord is damaged?

A: Unplug the device immediately and refer to qualified service
personnel for repair or replacement of the cord.

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DMP88
Digital Matrix Processor

96MAN0185-REV.23/24

USER’S MANUAL
ENGLISH

IMPORTANT SAFETY INSTRUCTIONS
Watch for these symbols: The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure, that may be of sufficient magnitude to constitute a risk of electric shock to persons.
The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.
1. Read these instructions. 2. Keep these instructions. 3. Heed all warnings. 4. Follow all instructions. 5. Do not use this apparatus near water. 6. Clean only with dry cloth. 7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions. 8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including
amplifiers) that produce heat. 9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with
one wider than the other. A grounding-type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet. 10. Protect the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where they exit from the apparatus. 11. Only use attachments/accessories specified by the manufacturer.
12. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.
13. Unplug this apparatus during lightning storms or when unused for long periods of time. 14. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in
any way, such as power supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped. 15. Warning: to reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture. 16. Do not expose this equipment to dripping or splashing and ensure that no objects filled with liquids, such as vases, are placed on the equipment. 17. To completely disconnect this apparatus from the ac mains, disconnect the power supply cord plug from the ac receptacle. 18. The mains plug of the power supply cord shall remain readily operable. 19. This apparatus contains potentially lethal voltages. To prevent electric shock or hazard, do not remove the chassis, input module or ac input covers. No user serviceable parts inside. Refer servicing to qualified service personnel. 20. This owner’s manual should be considered as a part of the product, it must accompany it at all times, and it needs to be delivered to the new user when this product is sold. In this way the new owner will be aware of all the installation, operating and safety instructions. 21. This apparatus should only be connected to a power source of type specified in this owner’s manual or on the unit. 22. You can clean the exterior of the unit with compressed air or with a dry cloth. 23. Don’t clean the unit using solvents like trichloroethylene, thinners, alcohol, or other volatile or flammable fluids. 24. To reduce the risk, close supervision is necessary when the product is used near children.
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DISPOSAL OF OLD ELECTRICAL & ELECTRONIC EQUIPMENT
This marking shown on the product or its literature, indicates that it should not be disposed with other household wastes at the end of its working life. To prevent possible harm to the environment or human health from uncontrolled waste disposal, please separate this from other types of wastes and recycle it responsibly to promote the sustainable reuse of material resources. Household users should contact either the retailer where they purchased this product, or their local government office, for details of where and how they can take this item for environmentally safe recycling. Business users should contact their supplier and check the terms and conditions of the purchase contract. This product should not be mixed with other commercial wastes for disposal.
DECLARATION OF CONFORMITY
The product is in compliance with: EMC Directive 2014/30/EU, LVD Directive 2014/35/EU, RoHS Directive 2011/65/EU and 2015/863/EU, WEEE Directive 2012/19/EU.
The product is in compliance with: S.I. 2016/1091 Electromagnetic Compatibility Regulations 2016, S.I. 2016/1101 Electrical Equipment (Safety) Regulations 2016, S.I. 2012/3032 The Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment Regulations 2012.
CONDITIONS OF USE
Proel do not accept any liability for damage caused to third parties due to improper installation, use of non-original spare parts, lack of maintenance, tampering or improper use of this product, including disregard of ascertainable and applicable safety standards. Proel strongly recommends that this apparatus must be installed taking into consideration all current National, Federal, State and Local regulations. The product must be installed by qualified personal. Please contact the manufacturer for further information.
PACKAGING, SHIPPING AND COMPLAINT
This unit package has been submitted to ISTA 1A integrity tests. We suggest you control the unit conditions immediately after unpacking it. If any damage is found, immediately advise the dealer. Keep all unit packaging parts to allow inspection. Proel is not responsible for any damage that occurs during shipment. Products are sold “delivered ex warehouse” and shipment is at charge and risk of the buyer. Possible damages to unit should be immediately notified to forwarder. Each complaint for manumitted package should be done within eight days from product receipt.
WARRANTY AND PRODUCTS RETURN
Proel products have operating warranty and comply their specifications, as stated by manufacturer. Proel warrants all materials, workmanship and proper operation of this product for a period of two years from the original date of purchase. If any defects are found in the materials or workmanship or if the product fails to function properly during the applicable warranty period, the owner should inform about these defects the dealer or the distributor, providing receipt or invoice of date of purchase and defect detailed description. This warranty does not extend to damage resulting from improper installation, misuse, neglect or abuse. Proel S.p.A. will verify damage on returned units, and when the unit has been properly used and warranty is still valid, then the unit will be replaced or repaired. Proel S.p.A. is not responsible for any “direct damage” or “indirect damage” caused by product defectiveness.
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SUMMARY
IMPORTANT SAFETY INSTRUCTIONS …………………………………………………………………………………………… 2 DISPOSAL OF OLD ELECTRICAL & ELECTRONIC EQUIPMENT …………………………………………………………….. 3 DECLARATION OF CONFORMITY ………………………………………………………………………………………………… 3 CONDITIONS OF USE ……………………………………………………………………………………………………………….. 3 PACKAGING, SHIPPING AND COMPLAINT …………………………………………………………………………………….. 3 WARRANTY AND PRODUCTS RETURN …………………………………………………………………………………………. 3 INTRODUCTION ……………………………………………………………………………………………………………………… 6 DESCRIPTION …………………………………………………………………………………………………………………………. 6 MAIN FUNCTIONS …………………………………………………………………………………………………………………… 6 PANEL OPERATIONS ………………………………………………………………………………………………………………… 7
1 PWR …………………………………………………………………………………………………………………………… 7 2 SYS …………………………………………………………………………………………………………………………….. 7 3 DISPLAY ………………………………………………………………………………………………………………………. 7 4 USB AUDIO ………………………………………………………………………………………………………………….. 7 5 GROUND………………………………………………………………………………………………………………………8 6 POWER SWITCH ……………………………………………………………………………………………………………. 8 7 AC~ SOCKET …………………………………………………………………………………………………………………. 8 8 ETHERNET CONNECTOR………………………………………………………………………………………………….. 8 9 RESET BUTTON……………………………………………………………………………………………………………… 8 10 RS-485 RS-232 CONNECTORS ……………………………………………………………………………………….. 8 11 GPIO CONNECTORS ……………………………………………………………………………………………………. 8 12 LINE OUTPUTS…………………………………………………………………………………………………………… 8 13 MIC/LINE INPUTS ………………………………………………………………………………………………………. 9 MATRIX BLOCK DIAGRAM…………………………………………………………………………………………………………. 9 DMP88 ­ DSP CONTROL SOFTWARE………………………………………………………………………………………….. 10 Software/Hardware requirements ………………………………………………………………………………………… 10 Software installation ………………………………………………………………………………………………………….. 10 First run and setup …………………………………………………………………………………………………………….. 10 Normal run ………………………………………………………………………………………………………………………. 12 Edit Parameters of DMP88…………………………………………………………………………………………………… 13 INPUT SOURCE………………………………………………………………………………………………………………….. 13 EXP – INPUT EXPANDER ………………………………………………………………………………………………………. 14 COMP ­ INPUT COMPRESSOR………………………………………………………………………………………………. 14 AGC ­ INPUT AUTO GAIN CONTROL ………………………………………………………………………………………. 15 PEQ – INPUT/ OUTPUT PARAMETRIC EQUALIZER ……………………………………………………………………… 15 Feedback ­ INPUT ANTI FEEDBACK ……………………………………………………………………………………….. 16 INPUT LEVEL & MUTE …………………………………………………………………………………………………………. 17 AUTOMIXER……………………………………………………………………………………………………………………… 17 AEC (Acoustic Echo Canceller) ………………………………………………………………………………………………. 19 ANS (Automatic Noise Suppression) ……………………………………………………………………………………… 20 MATRIX……………………………………………………………………………………………………………………………. 20 OUTPUT Filter – High & Low Pass Filter…………………………………………………………………………………… 21 OUTPUT Delay ………………………………………………………………………………………………………………….. 21 OUTPUT Limiter ………………………………………………………………………………………………………………… 22 OUTPUT Setting ………………………………………………………………………………………………………………… 22 OUTPUT LEVEL & MUTE………………………………………………………………………………………………………. 22 Group Setting……………………………………………………………………………………………………………………. 23 USB MEDIA PLAYER/RECORDER ……………………………………………………………………………………………. 23 Soundcard Setting: …………………………………………………………………………………………………………….. 23
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Record and Playback ………………………………………………………………………………………………………….. 24 Menu Options…………………………………………………………………………………………………………………… 24 File Menu ………………………………………………………………………………………………………………………… 24 Setting Menu ……………………………………………………………………………………………………………………. 25 Help Menu……………………………………………………………………………………………………………………….. 25 Device Setting …………………………………………………………………………………………………………………… 25 GPIO Setting …………………………………………………………………………………………………………………….. 26 Group Setting……………………………………………………………………………………………………………………. 29 Preset Name …………………………………………………………………………………………………………………….. 29 Panel Setting (WP88 REMOTE CONTROLLER)…………………………………………………………………………… 30 User Interface (TABLET OR SMARTPHONE REMOTE CONTROL) …………………………………………………… 33 WORKING WITH PRESET…………………………………………………………………………………………………………. 37 RM88 ­ 8 ZONE PAGING MICROPHONE STATION …………………………………………………………………………. 38 1 MIC INPUT …………………………………………………………………………………………………………………. 38 2 POWER ……………………………………………………………………………………………………………………… 38 3 BUSY…………………………………………………………………………………………………………………………. 38 4 SIG……………………………………………………………………………………………………………………………. 38 5 CLIP ………………………………………………………………………………………………………………………….. 38 6 Z1…Z8……………………………………………………………………………………………………………………….. 38 7 ALL …………………………………………………………………………………………………………………………… 38 8 CHIME ………………………………………………………………………………………………………………………. 39 9 TALK …………………………………………………………………………………………………………………………. 39 10 MIC LEVEL ………………………………………………………………………………………………………………. 39 11 CHIME LEVEL …………………………………………………………………………………………………………… 39 12 SIGNAL OUTPUT ………………………………………………………………………………………………………. 39 13 +12V and RS485 CONNECTION ……………………………………………………………………………………. 39 DMP88 – TECHNICAL SPECIFICATION …………………………………………………………………………………………. 41 WP88 – TECHNICAL SPECIFICATION …………………………………………………………………………………………… 42 RM88 – TECHNICAL SPECIFICATION …………………………………………………………………………………………… 42
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INTRODUCTION
Thank you for choosing a PROEL product. Please take some time to read this manual to understand all the features of your system and take advantage of all its performance capabilities. All PROEL products are CE approved and designed for continuous use in professional applications.
DESCRIPTION
The DMP88 is an 8-input / 8-output digital audio matrix, featuring full signal routing capability and top-quality digital signal processing, including COMPRESSORS, EXPANDERS, AUTOMATIC GAIN CONTROL, PEQ, FEEDBACK SUPPRESSION, AUTOMIXER, ECHO CANCELLER, AUTOMATIC NOISE SUPPRESSION, CROSSOVER filters and LIMITERS. The DMP control software provides the remote control of all the parameter thru standard ETHERNET protocol and allows the creation of custom control panels on personal devices such as smartphones and tablets. The DMP88 can be connected to WP88 wall touch panel for local parameter controls and to RM88 8zone paging microphone station. The DMP88 is suitable for high-quality, complex installations in shopping malls, restaurants, hotels, museums, conference rooms, where the number of inputs and outputs and the area of diffusion require precise parameterization.
MAIN FUNCTIONS
· N° 8 MIC / LINE inputs balanced on Euroblock terminals. · N° 8 balanced LINE level zone outputs on Euroblock terminals. · N° 8 GPIO customizable I/O ports. · Ethernet, RS485, RS232 ports for remote control. · USB port for Audio I/O and Media Player operation. · Remote Video Cameras control with VISCA, PELCO or custom protocols. · Windows-based DMP control software to configure and control all DMP88’s parameters. · 16 built-in presets, each with the possibility to flexibly customize the type of modules and
their sequences in accordance with the designer’s requirements.
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PANEL OPERATIONS
1 PWR LED power indicator.
2 SYS The operation status indicator of the device.
3 DISPLAY The display sequentially shows some information on the device settings: Device model IP address Firmware version MAC address
8 channel input signal level
8 channel output signal level 4 USB AUDIO
USB soundcard (1-in-1-out), which can be used to achieve recording function.
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5 GROUND
This is a supplementary chassis ground connection that can be used to assure a better safety ground protection of the device.

6 POWER SWITCH Main switch to turn on or off the device.

7 AC~ SOCKET
Here’s where you plug in your mains supply cord. You should always use the mains cord supplied with the device. Be sure that your device is turned off before you plug the mains supply cord into an electrical outlet.
The device can operate correctly in the voltage range of 100-240V~ ±10% 50/60Hz requiring a power less than 25W at temperatures ranging from 0°C (32°F) to 30°C (80F°).

8 ETHERNET CONNECTOR The 10/100 Base-T Ethernet connector is used for remote control from PC and from WP88 wall panel.

9 RESET BUTTON
Pressing this button, the device is reset to default parameters, all settings are lost, preset, gain, equalization, dynamics, RS-485 RS-232 and ETHERNET setting are restored to factory default.

10 RS-485 RS-232 CONNECTORS
RS485 can be used for voice tracking control (or other output commands), or for bus input control. Typically used to connect the RM88 Microphone Station (Port setting: 9600 baud, 8 data bits, 1 stop bit, no parity). RS232 can be used for the serial communication port Tx = sending or data output or Rx = receiving or data input that connects to a third-party control device. Typically used to control a third-party camera.

11 GPIO CONNECTORS

8-Channels Input/Output ports fully configurable by the software (3.81 mm terminals). V = +4 Vdc (12 ohm – 50mA max) D (input) = Trigger High or Low / Analog D (output) = 0 / +5 Vdc (50 ohm ­ 30mA max)
= Ground See further on this manual for a detailed configurations and examples.

12 LINE OUTPUTS

These are 8 internal balanced line outputs (3.81mm terminals), used to send the audio signal to different zones or environments.

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13 MIC/LINE INPUTS

These are the 8 analog inputs (3.81mm terminals), used to receive the audio signal from microphones or other audio sources.

MATRIX BLOCK DIAGRAM
For a better understanding of how the signal flows in the DMP88 see the figure below:

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DMP88 ­ DSP CONTROL SOFTWARE

Software/Hardware requirements
A PC with a processor of 1 GHz or higher. Windows 10 or higher version. 1 GB free storage space. 2 GB or higher memory. Monitor with 1024 x 768 or higher resolution, 24 bit or higher color. CAT5 cable. Fully configured TCP/IP Ethernet network with ports available to connect the devices.

Software installation The software can be downloaded from the website commercialaudio.proel.com. Double click the downloaded file and install the software by following the instructions on the screen.
IMPORTANT: Administrator privileges are required to install and use the software. Starts the software from the Desktop icon or from Start menu.

First run and setup

Connect the ETHERNET port to your network.

Double click on DMP control icon or choose it from start menu.
The DMP control allows to choose the matrix device model (at time printing of this manual DMP88 only). Press OK.

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After starting the software, the HOME page is shown as below:
At the left of top bar you will note the DMP88 is selected but it is offline (grey indicator). Press Device List at the right of the top bar. DMP control search all DMP88 units connected to your network and after some seconds it appears, typically as factory default or after a full reset (8) it has an incorrect IP address like 169.254.10.227. Press Set IP to set a correct IP address.
Ask to the network manager a valid IP address or search it using one of the suggested free below utility: https://www.advanced-ip-scanner.com/ or https://nmap.org/ usually in the range 192.168.0.0 – 192.168.255.255 that is the typically IP private range for local network. Type it in the Device IP Address box then Press OK. The Device List now shows the same DMP88 unit with a valid IP. Press Connect button.
Now the screen shows a chain to confirm the successful connection. Close the Device List Panel re-clicking on Device List. At the left of top bar you will note the DMP88 has now the its full device name and the indicator is green.
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Normal run

Double click on DMP control icon or choose it from start menu.

The DMP control allows to choose the matrix device model (at time printing of this manual DMP88 only). Press OK.

After starting the software, the HOME page is shown as below:

At the left of top bar you will note the DMP88 is selected but it is offline (grey indicator). Press Device List at the right of the top bar.
DMP control search all DMP88 units connected to your network and after some seconds appears the DMP88 unit with a valid IP. Press Connect button.
Now the screen shows a chain to confirm the successful connection. Close the Device List Panel re-clicking on Device List. At the left of top bar you will note the DMP88 has now the its full device name and the indicator is green.

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Edit Parameters of DMP88
The figure above shows the Home page: clicking on tabs at top is possible to choose a specific page between Home, Inputs, Automixer, ANS (automatic noise reduction), AEC (automatic echo canceller), Matrix, Outputs, Meters and Camera. There are two methods to edit the channel parameters:
· Left click on a channel strip: an enlarged horizontal channel strip allows to change the parameters of the channel strip selected.
· Right click on a channel strip module: a window for specific module of that channel will pop out.

INPUT SOURCE

Sensitivity Phantom
Phase Mute Sine/White/Pink Freq(Hz) Level(dBFs)
Analog Signal Signal Generator

Set the input gain at 3 dB step.
Turn on the 48V for a condenser mike.
Do not enable phantom power with line input or when the power is not required, so as not to damage the external device.
Switch 180° the channel phase.
Silence the channel.
Select the generator waveform.
Select the Sine frequency.
Set the generator level. Be careful: high levels can damage the loudspeakers.
Select between analog input or generator.

Tip: the signal generator can be used to set up the system.

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EXP – INPUT EXPANDER

Threshold(dB) Sets the threshold in dBFs, the input signal below this value is attenuated.

Ratio

Sets the attenuation ratio (1:n).

Attack(ms)

Defines the time in which, after the signal returns above the threshold, the expander switches from the 1:n ratio to the 1:1 ratio (bypass).

Release(ms)

Defines the time in which the expander goes from the ratio (ratio) 1:1 to the set ratio (1:n)

On/Off

Switch on or off the expander.

G.R. meter

Shows the gain reduction in real time.

Tip: The expander module can be used to shut off a specific microphone when no one speak on it, you can use it in alternative or in conjunction with the Automixer module.

COMP ­ INPUT COMPRESSOR

Threshold(dB) Sets the threshold in dBFs, the input signal above this value is attenuated.

Ratio

Sets the attenuation ratio (n:1).

Attack(ms)

Defines the time in which, after the signal exceeds the threshold, the compressor switches from the ratio (ratio) 1:1 to the set ratio (n:1)

Release(ms)

Defines the time in which, after the signal drops below the threshold, the compressor switches from the set ratio (n:1) to the 1:1 ratio.

On/Off

Switch on or off the compressor.

Fader

Allows to set a gain after the compression.

G.R. meter

Shows the gain reduction in real time.

Output meter Shows the output signal in real time.

Tip: The compressor module allows you to attenuate the signal, for example, when a person screams into the microphone. Start with Threshold -18, Ratio 3:1, Attack 30ms, Release 300ms and adjust these parameters as needed.

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AGC ­ INPUT AUTO GAIN CONTROL

Threshold(dB)

Sets the threshold in dBFs, the input signal below this value is attenuated and above is compressed.

Ratio

Sets the compression ratio (n:1) after threshold.

Target Level (dB) Sets the medium level of the desired output signal.

Attack(ms)

Defines the time in which,

after the signal exceeds the

Tip: Auto gain control (AGC) is an exception of compressor. Its threshold is set at a very low level with

threshold, the AGC is enabled.

middle-to-slow starting time, long release time and low Release(ms)

Defines the time in which,

ratio. The purpose is to improve the signal with

after the signal drops below

uncertain level to a target level, while maintaining the

the threshold, the AGC is

dynamic range at the same time. Most of the auto gain

disabled.

control includes silent detection to prevent the gain On/Off

Switch on or off the AGC.

attenuation loss during the silent period. This is the only function that distinguishes auto gain control from ordinary compressor/limiter.
Auto gain control may be adopted to normalize the level of CD players that play background music, foreground

Input meter Output meter

Shows the input signal in real time.
Shows the output signal in real time.

music and music on hold, so as to eliminate the changes in the level of some paging microphones.

PEQ – INPUT/ OUTPUT PARAMETRIC EQUALIZER

Type
Freq(Hz) Gain(dB) Q or OCT ON or OFF

Selects the filter topology: High pass, Low pass, High shelf, Low shelf, Parametric.
Sets the center frequency.
Increases or reduces the gain of a band.
Sets the bandwidth of the filter.
Switches on or off the equalizer or a specific band.

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Feedback ­ INPUT ANTI FEEDBACK

Panic Limiter Threshold

Any level higher than the threshold is absolutely a feedback. Once the output level is lower than this threshold, the gain will be recovered to normal state. If the value is set as 0, this function is disabled.

If you want to get higher system transmission gain and feedback inhibition effect, it is recommended that you follow the steps below:
a) Reduce the system gain and use the button “Clear” to reset all filter parameters.
b) Set up parameters for the feedback inhibition module. Also, decrease the panic threshold to reduce the feedback level.
c) Open all microphones and slowly increase system gain until the feedback occurs. Stop increasing system gain when the feedback occurs.

Feedback Threshold
Filter Depth
Step
1/5 or 1/10 octave Clear All
Manual/Dynamic

Any level lower than this threshold is absolutely not a feedback.
It refers to the maximum attenuation of a single filter.
Minimal octave step between filters.
1/10 and 1/5Oct can be chosen.
Click the button to instantly clear up all filters.
Sets a filter manually or automatically.

d) Wait for the feedback inhibition module to take On/Off effect: after the feedback disappears, continue to increase gain.

Switches on or off the Anti Feedback

e) Repeat the operation until the system reaches the required gain or until all filters are fully distributed.

f) Change the panic threshold to a maximum level just higher than the expected non-feedback signal. At this time, if needed, you may set Fixed mode for each filter or save the dynamic status to deal with possible feedback during the performance period. Additionally, you may copy the filter to the notching filter module (such as equalizer). In this way, you may add more filter capacity.

Tip: Antifeedback does not work miracles. To obtain the best results traditional methods must still be used, such as limiting the number of microphones to be opened, reducing the distance between the speaker and the microphone to a minimum, positioning and directing microphones and speakers to obtain a minimal feedback and balance the room to achieve a flat response.

Tip: For speaker outputs it is advisable to use a limiter module as additional protection. Set an appropriate limiter to ensure that the speaker is not damaged even if all notch filters are exhausted or the antifeedback cannot effectively control the feedback, as in the case of excessive system gain.

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INPUT LEVEL & MUTE

Channel Name
Mute
Fader
Meter Link
Group setting… Minimum/Maximum Gain

Double click on the “INn” text and assign a custom name to the channel.
Click on Mute button to switch on or off the channel.
Moving the fader you can change the channel level from -72 to +12dB range.
The meter shows the signal level in real time.
With Link button activated the left channel is coupled with the right channel.
By right-clicking on the channel two further settings are possible:
Group Setting: There are 4 groups of channels, all channels in the same group have the same level.
Set the minimum and maximum level range for the fader, this option can be useful for reducing a user’s level setting.

The Link button replicates the parameters on the other connected channel only after it is pressed, all parameters modified before activating the link are valid only for the single channel.
AUTOMIXER

The Automixer can be useful in any situation where multiple microphones are installed in the same environment, such as in a conference room or an auditorium. If all the microphones are open, even if you are using only one microphone all the other microphones pick up the amplified signal in the room and the intelligibility is negatively affected. If the other microphones are attenuated with the Automixer, then the intelligibility increases considerably.
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To simplify the operations, it is recommended to use same kind of microphones for all channels assigned to the Automixer. The Automixer opens an input channel when a signal is present and, at the same, time attenuates all the other channels without any signal. To do that, all those channels must be assigned to the Automixer. Furthermore, the Automixer module allows you to give a priority to each assigned channel: the channel with higher value of priority (10…) attenuates the audio of all channels with lower value of priority (…1), each step of priority corresponding to 2dB of attenuation. As example with two microphones on a podium, where mic1 has set priority 10 and the mic2 has set priority 1: in this case typically only mic 1 works and mic2 is attenuated of 18dB, avoiding any combing filtering. When mic1 is not used, then mic2 takes over mic1. Another example: in a conference room when several mikes are on the table, it can be useful to give priority 10 to the chairman and lower priority to other conference guests. Gain (dB): controls main output volume of Automixer microphones. Slope: the slope control influences the attenuation of lower-level microphones. If the slope is higher, the attenuation of lower-level channel will rise. It is suggested that the value be set at or around 2. Response Time: faster response times can ensure that the initial letters of speeches are not truncated. A slower response time allows for smooth operation if there are pauses during speech. Practice shows that the best effect will be produced when the response time is between 100 ms and 1000 ms. AutoMixer Button: pressing this button the channel is assigned to the automix. Mute button on each Automixer Channel: pressing this button will mute the respective channel on the Automixer output, but if a priority is set it will be active. For example, if we have IN1 with priority at 10 and IN2 with priority at 1, activating Mute from Automixer on IN1, the IN1 signal will not be reproduced at the output but IN2 will still be attenuated by 18 dB. So, if you want to mute completely the channel, is preferable to use the mute in the input section. Fader on each Automixer Channel: fader adjustment may increase/decrease the volume proportion of the respective channel in Automixer without affecting the priority level detection. Elsewhere if you use the fader on input section, any adjustment affects both output level and priority level detection. Mute Automixer button: the Automixer mute button silences completely the Automixer output. Priority: this setting gives greater relevance to certain channels than others. The Priority parameter ranges from 1 to 10: the higher the value, the higher the priority. ON/OFF: switch on or off the Automixer module. To be used effectively, the Automixer output must be routed exclusively to the outputs as show below:
Note: the input channels assigned to the AutoMixer module must not be assigned to the same outputs where the AutoMixer module is assigned, otherwise the unprocessed input channels are added to the output processed by the Automixer, nullifying its intervention. Note: In some settings, users should be very careful when using large priority differences between channels, such as priority 1 and 10. If a high priority channel recognizes background music or noise as a signal, it may mask the lower priority channels even if it is not used. Using a noise gate or expander on the high priority channel can improve the situation by setting a threshold at a level such that the channel is not opened with music or background noise.
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AEC (Acoustic Echo Canceller)

Acoustic Echo Canceller (AEC for short) is a digital audio signal processing technology used in audio/video conference. When conferees in local conference room are talking with one or more speakers at certain distance, AEC program can increase remote speaker’s phonetic intelligibility cancelling acoustic echo generated in local room.

Echo cancellation module for remote calls can be used to carry out local amplification of remote voice signals and attenuate the interference caused by acoustic echo. Its basic operation principle is simulating echo channel, estimating possible echo generated by remote signals and then subtracting the estimated signal from input signal of microphones: thus, there will be no echo generated in input voice signal to achieve the goal of cancelling echo.

There is only one echo cancellation module in the DSP controller. The local and the remote must be set to achieve echo cancellation of the signal, as shown in the figure.

The following parameters can be adjusted:

Local Input: sets the channels for the local input.

Remote Input: sets the channels for the remote input.

NLP: non-linear filter, three types including Conservative, Moderate and Aggressive can be selected to determine echo suppression level.

ON/OFF: switches on or off the AEC module.

As example the following figure shows an implementation using IN1 OUT2 as Local and IN2 OUT1 as Remote:

+

IN1

OUT1

–

LOCAL

LOCAL INPUT
AEC
REMOTE INPUT

REMOTE

+ –

OUT2

IN2

The parameters are set as follow:

The settings of echo cancellation module shall be used cooperatively with matrix module setting signal router as follow:

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ANS (Automatic Noise Suppression) The noise suppression module can effectively remove any background noise except the human voice. There is only one noise suppression module in the DSP and you can adjust the following parameters: Input channels: selects the channels for the input. Keep in mind that, even if multi-channel inputs are available, they are all mixed together on the single output of the ANS module in the matrix: it is therefore recommended to only select the channels where the ANS is actually an indispensable operation for better intelligibility. Level: there are four levels of noise attenuation: 6 dB (soft), 10 dB (moderate), 15 dB (medium) and 18 dB (aggressive). The higher the number, the higher the noise reduction will be, but the voice quality will inevitably also worsen. Note: the input channels assigned to the ANS module must not be assigned to the same outputs where the ANS module is assigned, otherwise the unprocessed input channels are added to the output of the same channels processed by the ANS, nullifying its intervention. MATRIX Matrix has two operational functions, which include routing and sound mixing. As shown in the figure, the upper horizontal bar indicates the input channels and the left vertical bar indicates the output channels. The default is one-to-one entry and exit. For example, if you need to mix the signals of input 1 and 2 and send them to output 1, you only need to click both cells of input 1 and 2 in the output 1 row.
For example, if inputs 1 and 2 participate in automixing, you should only set the automixer channel to output 1.
Similarly, for ANS noise suppression module.
Users need to set the matrix to get the correct signal path relationship.
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OUTPUT Filter – High & Low Pass Filter
Each output channel provides high-pass and low-pass filters modules. Each filter has four kinds of parameters as follows:

Frequency Gain Type Slope
On/Off

The cutoff frequency of filters. The cutoff frequency of Bessel and Butterworth is defined at -3 dB, and the cutoff frequency of Linkwitz-Riley is defined at -6dB.
Increase or attenuates the gain of the filter.
There are three types of filters including Bessel, Butterworth and Linkwitz-Riley. Butterworth has the flattest passband.
It refers to attenuation values of transition zone of filters. There are totally 8 attenuation values including 6, 12, 18, 24, 30, 36, 42 and 48dB/Oct. For example, 24dB/Oct indicates that the attenuation range is 24dB for each octave difference existed in frequency in transition zone.
Switches on or off the filter.

OUTPUT Delay

In this panel it is possible to set a time delay on each output. The output delay is a useful function that allows you to align speakers positioned differently in the same room in time. For example, in a very deep hall by positioning two speakers in the middle the sound will be reinforced, but these speakers will also need to be aligned with the delay to the main system for better intelligibility.
Cursor: The value varies from 1 to 1200 milliseconds, both meters and feet are displayed, 340 m/s is the reference for the speed of sound in air.
On/Off: activates the established delay.

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OUTPUT Limiter

An audio limiter acts a lot like an audio compressor, with a few key differences. As its name suggests, limiting sets a limit, or ceiling to the output level. In other words, no sound beyond that threshold can get through. So, limiting doesn’t allow that crossing at all. It’s more of a brick wall. In a PA system the main use is protection: it prevents the signal from exceeding the capability of subsequent amplifiers and speakers.

Threshold (dB) Release (ms)
On/Off G.R. meter Output meter

Sets the threshold in dBfs of the brick wall.
It is the amount of time it takes for the limiter to stop after the signal falls below the threshold. If you want a smoother sound, try 250ms or above.
Switches on or off the limiter.
Shows the gain reduction of the signal.
Shows the output level.

OUTPUT Setting Phase: 180-degree audio signal phase invert. Mute: Set mute/unmute.
OUTPUT LEVEL & MUTE

Output Name
Mute
Fader
Meter Link
Group setting… Minimum/Maximum Gain

Double click on the “OUTn” text and assign a custom name to the output.
Click on Mute button to switch on or off the output.
Moving the fader, you can change the channel level from -72 to +12dB range.
Shows the signal level in real time.
With Link button activated the left channel is coupled with the right channel.
By right-clicking on the channel two further settings are possible:
Group Setting: there are 4 groups of channels, all outputs in the same group have the same level.
Minimum/Maximum Gain: set the level range for the fader, which can be useful for reducing a user’s level setting.

The Link button replicates the parameters on the other connected output only after it is pressed, all parameters modified before activating the link are valid only for the single output.

22

Group Setting By clicking with the right mouse button on the fader of a channel a menu appears on the screen from which you can open the Group Setting window, which allows you to vary both the Mute and Level of the channel inputs or outputs together.
Four groups are available, on the main panel they differ in the color of the fader slider:
Note: the group setting sets the same mute and level for all the selected channels, no other parameters are affected. USB MEDIA PLAYER/RECORDER Soundcard Setting: · To connect the DMP88 processor and a computer (PC Windows 10 or more) you need to connect the devices with a USB cable with both ends being type A. · The first time you connect, the message “Found New Hardware” will appear on your computer screen and the driver will be installed automatically. · After installation, the USB sound card will appear in your computer’s sound card list, as shown in the figure. Users need to select it from the software settings.
Required cable: USB TypeA-TypeA max length 2m.

Click on settings

and choose

the right soundcard.

Using the Browser button, it is possible to set the folder on the computer where the recordings are stored:

(C:Program Files (x86)DMP controlDSP 1.0RecordFiles)

It is the default path.

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Record and Playback

The USB sound card is used to perform two functions, record and play audio files using a personal computer.

Player

Song playing information, double click to enter playlist

Previous song

Play

Next song

Recorder

Stop/Pause Play volume level Start recording

Stop recording

Setting (see above) Record volume level

With the Recorder is possible to record any input assigned to USB in the Matrix window. Using record button, the program starts to record into a file (filename is “Recorder date time.wav”), pressing stop button the record ends. With the volume it is possible to vary the record level. All recorded files are stored into the path set in the “Save path” folder specified in the settings.
Users can manage song files and save them as playlists.

With a double click in the player display area is possible to specify a list of playable files (.wav or .mp3). The name “default.list” is reserved for the current list, but is possible to save or recall another list “yourname.list” of playable files. They could also open them directly next time they use the device.

As shown in the figure, click at the bottom of the playlist to open file folder and select songs to be added to the playlist, to clear the full playlist and to enter in the settings.

By stopping the mouse cursor over a file these icons appear

: clicking

on the trash can remove the file from the current list, clicking on the folder

opens the Windows File-Manager in the folder where the file is located.

Menu Options File Menu

The file menu allows the user to Open or Save all the device settings to a file (.dmdsp) on the computer.
The Open… command is available only if the program is offline and is used to load a preset when you are disconnected from the DMP88 unit.

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Setting Menu

The Setting Menu allows the user to configure various device settings. Each one of these settings is explained in detail further in this manual.

Help Menu

The Help Menu allows the user to show some information:

About…

Shows the app version.

Support…

Provides information for downloading the manual and the control software.

Command Capture…

Capture the string of the current command that can be used with GPIO Setting, see further on this manual.

Device Setting This dialog box allows the user to configure the main parameters of the device:

Set Up Redundancy BackupDeviceIP Control Center Response
Power-off Memory

Device Name

Shows the device name, which can be changed by the user.

Device IP Address Allows to change the unit’s IP address.

Gateway

Allows to set the gateway.

Netmask

Allows to set the netmask.

Mac Address

Unit’s Mac address, not editable.

Default Preset

Allows to select which preset must be loaded at power on.

As default is set to OFF, if it is ON allows to set up a backup device with a different IP address.

Specify the IP address of the backup device.

As default is set to ON, so the unit responds to the receiving RS485 commands. When set to OFF the unit doesn’t respond to RS458 commands. To communicate with the RM88 station it must be set to ON.

As default is set to OFF, so the current settings are not saved when the unit is powered off and the current preset (1-16) is restored after a power on. If set to ON, the current settings of the unit are stored at the power off and restored at the power on.

25

Enable Model Selection Box
UDP Control Port RS-232 RS-485

Allows the app to connect to the device, typically leave this option always ON, preferably use the password to restrict the access to the device. Set the number of the UDP control port. Set the parameters for the RS232 communications. Set the parameters for the RS485 communications.

GPIO Setting
Each GPIO port has input D forced high, for this reason it is suggested to use the following circuits for the various types of triggers:
Low Level Trigger (more simple and stable)

High Level Trigger (it is always preferable to use the above method)

Triggered by low level, cancelled by high level (Note: since D is forced high the V connection can be omitted)
Triggered by high level, cancelled by low level

This dialog box allows the user to configure the GPIO (General Purpose Input/Output) ports:

1…8

GPIO port number.

Direction

Allows to set port as input or output.

Control Type

Allows to select the type of control of the device.

Active

Activate the GPIO.

Trigger Type

Allows to set the trigger type in case of a GPIO switch.

Channel

Depending on the previous configurations these options allow to control a device parameter.

Save As…

Save all the GPIO ports configuration to a .GPIO file type.

Open…

Recall all GPIO ports configuration from a .GPIO file type.

Save

Save in the device memory all the GPIO settings.

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Input: Preset recall

By providing a logic pulse to the GPIO port the processor will switch to the Preset when the Trigger condition is satisfied. Examples:
Trigger Type: Low Level Trigger on the GPIO port going from a high logic level to a low logic level the falling transient will recall Preset 1.
Trigger Type: High Level Trigger on the GPIO port, going from a low to a high logic level the rise transient will recall Preset 1.

Input: Routing assign

By providing a permanent logic level to the GPIO port the processor activates/deactivates a specific input/output combination of the matrix.
Examples:
Trigger Type: Triggered by low Level, Canceled by High level
– on the GPIO port in the presence of a low logic level, Input 1 will be sent to Output 1.
– on the GPIO port in the presence of a high logic level, the assignment of Input 1 to Output 1 will be cancelled.
Trigger Type: Triggered by High Level, Canceled by low level – on the GPIO port in the presence of a high logic level, Input 1 will be sent to Output 1.
– on the GPIO port in the presence of a low logic level, the assignment of Input 1 to Output 1 will be cancelled.

Input: Gain increase or decrease

By providing a logic pulse to the GPIO port the processor increases (step at +..) or decreases (step at -..) the level of a specific input or output channel, typically two GPIOs are installed, the first to increase the level and the second to lower it.
Examples:
Trigger Type: High Level Trigger
on the GPIO port, going from a low to a high logic level the rise transient will increase the Gain of Input 1 by 1 dB (Value set in the “Step” window).
Trigger Type: Low Level Trigger
on the GPIO port, going from a high to a low logic level the falling transient will increase the Gain of Input 1 by 1 dB (Value set in the “Step” window).

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Input: Mute/Unmute

By providing a permanent Logic Level to the GPIO port the processor mutes/unmutes a specific input/output channel. Example: Trigger Type: Triggered by low Level, Canceled by High level – on the GPIO port in the presence of a low logic level, the MUTE of Input 1 will be activated. – on the GPIO port in the presence of a high logic level on Input 1, the MUTE of Input 1 will be deactivated.

Input: Command send to RS232

By providing a logic pulse to the GPIO port the processor when activated sends a sequence of commands to the RS232 port, for example a specific command to control a camera connected to RS232.
Note: to understand how the other “Trigger Type” settings work, also refer to the previous examples.

Input: Analog To Digital Gain Output: Active Preset

Connecting a linear potentiometer to a GPIO port adjusts the gain of the input or output channel.
Note: to obtain better control of the regulation, use a classic 10 Kohm potentiometer connected to the positive terminal with a 3.6 Kohm fixed resistor.

10K Rpot
D

3K6 Rfix V

When the specified preset is active, the GPIO port outputs a high or low level logic signal.

As an example, we show two diagrams in which a LED is lit:

Output high level

LED

D

R1

Output low level

LED

D

R1

V

2 70 ohm

270 ohm

The output port also allows you to activate a small 5V 150-200

ohm relay. If it is necessary to drive larger relays, rely on generic

relay cards or modules.

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Output: Reaching a Level

GPIO outputs a logical high or low level when the designated channel level reaches the preset level threshold.
For example, by turning on a LED as in the previous example it is possible to visually signal either the presence of a signal or the achievement of a high level.

Output: Mute Status

GPIO outputs a logical high or low level when the channel is muted. On the contrary, the opposite level will be output when cancelling mute.
For example, by turning on a LED as in the previous example it is possible to visually indicate whether a certain microphone is on or off.

Group Setting Chapter described previously (see above).

Preset Name

This dialog allows the user to name each preset as they like.

29

Panel Setting (WP88 REMOTE CONTROLLER)

Panel Setting allows the user to set up the remote control panel WP88: · WP88 must be connected to a PoE switch in the same network where is connected the DMP88 unit.

· Press button and the WP88 appears on the right side in the Online Panel list.

· Press

button and set a valid address for your network (always a number +1 of the DMP88 IP

address):

· Press OK.
· Press button again and the WP88 appears on the right side with the correct IP. · For the first setup drag the offline WP88 device from the left panel column to the panel design surface,
then double-click to edit it.

30

· In the Device Name field, you can specify the name of the WP88 controller, usually it refers to the room or hall it is installed.

· In the Device IP Address field, you must specify the same address above used for the online WP88 device.

· Now using the

button is possible to add the operations controlled by the WP88:

31

In the example above a Volume and Preset recall commands are added. · Press OK. · Still dragging it from the left side, take a DMP88 unit, place it on the desktop and double click on it. · Set the correct IP address of the DMP88 unit.

· Then connect the WP88 controller with the DMP88 unit simply dragging a wire from the dot to the dot.

· Press

button to upload the configuration to the WP88 controller.

· Check if it operates correctly.

· Now is possible to save or recall

a configuration to disk and clear the desktop .

· To modify a pre-existent WP88 configuration is possible to drag from right column the WP88 on the

desktop and edit it. Always press

button to upload a modified configuration.

32

User Interface (TABLET OR SMARTPHONE REMOTE CONTROL) This menu option opens the DSP Controller editor. This utility enables to create custom interfaces for tablet or smartphones, that allow the user to access only the controls allowed by the system designer. It supports both Android or iOS devices.
· iOS devices: look for the application dsppro v2 through the App Store and install it.
33

· Android devices: go to PROEL COMMERCIAL AUDIO web site (https://commercialaudio.proel.com), download the app file DSPPro_2.x.xx.apk from the DMP88 product page.
· The tablet or smartphone must be connected to the same network as the DMP88. · Start the app on the mobile device and leave it active. · Start the DSP Controller editor from the user interface menu option: a blank screen without any template
active or an empty page (with the latest template used) appears. · Select an existing template or create a new template:
o Choose the Setting/Templates menu or click on the button:
o If there is an already done template choose it and press Apply, elsewhere click on Device Template and after a fast scan if your device is active in the network it appears in the list, choose it.
o Is possible to Edit, Delete or naming the templates. · Edit function:
Upper toolbar options: Create a new page, you can add multiple pages. Save the edited page to the specified directory of the computer. Open the edited page stored on the computer. Local template and online template selection. SYNC button to upload the edited page to the mobile terminal. Rotate, switch between horizontal screen and vertical screen. Replace IP: you can quickly replace the same IP on the page with the specified IP. Undo the last operation. Redo the last operation. Align selected elements to left. Align selected elements to top. Align selected elements to right. Align selected elements to bottom. Align selected elements evenly spaced horizontally.
34

Align selected elements evenly spaced vertically. Arranges the selected elements horizontally by n pixels. Arranges the selected elements vertically by n pixels. Lower toolbar options:
Add text, and modify the font, font size, text color, etc. in the property bar on the right. Add channel controls, name, mute, level display, volume control. In the property bar on the right, you can adjust the size, color, background color. You can also set the channel type: input or output; set the channel number; set the IP address of the associated device. Note that the IP address of the associated device of each control is very important: it is the IP address of the processor to be controlled, which needs to be filled in correctly. The preset recall control has 16 preset options: remember to check the corresponding preset number to be recalled and the IP address of the associated device in the property bar on the right. Add a picture: note that large picture files require a lot of time to be uploaded to the mobile device, use preferably small images. Add a button: press to send a custom command. The property bar sets the size and color of the button and 3 commands can be added to the command bar: RS232, RS485, UDP. The command format is hexadecimal. Add a Status button. The difference between the status button and the button is that the status button has two states: pressed down and popped up. For these two states, the command bar can set commands respectively. Similarly, three kinds of commands can be added: RS232, RS485, UDP. The Command format hexadecimal. In addition to custom commands, status buttons can also set system commands, including I/O mute, system mute, and matrix routing. Add a Matrix of specified size, changing the color, size, etc. of the property bar on the right. Add a Level meter: it displays the current channel level. Set the size, color, etc. in the property bar on the right. You can also set the current channel alarm level: when the set level value is reached, the current channel will display red and emit an alarm sound to remind the user. Add a Volume fader adjustment of a specified input or output channel. Add a Volume value, set the volume value of a specified input or output channel. Add a Frame to the editing area. Adjust the size and color of the frame in the property bar on the right. Enlarge or shrink the device image.
· Without any object selected is possible to set the Background area page color, add background image.
35

· Upload and check the User Interface
After you have terminated to design the user interface you have to upload it to the connected device and check it:

· Press the

SYNC button and the following box appears:

· The tablet or smartphone and the DMP88 processor must be in the same network segment of the same local network, and the correct IP address of the processor must be entered in the control properties.
· When uploading the user interface, the tablet or smartphone must have the dedicated application in the foreground and active, otherwise the program will not detect the tablet/smartphone.
· If it has not been activated, activate it and press refresh button .
· Once the tablet/smartphone has been identified it appears in the list, you need to select it and then

press the SYNC button

: the left bar will display the progression of the transfer.

· At the end of the upload the designed interface appears on the device. Check in the DMP control software

that all the functions on the tablet/smartphone can effectively control the DMP88. If not, reopen the

program, make the necessary changes and re-upload until you are satisfied.

· A useful tip is to always save your changes on your computer.

36

WORKING WITH PRESET
In the top bar there are some buttons that allows to operate with the preset and other functions. At the top left bar there are:
Reset To Defaults: this button reset all the preset stored in the DMP88 to the factory default preset. A confirm dialog box appears: choose Yes or No. Restore Factory Setting: this button reset all the parameters in the DMP88 to the factory settings. A confirm dialog box appears: choose Yes or No. System Mute: this button silences all the outputs. When silenced the button shows: Press it again to re-open the outputs. This button allows to choose one of the sixteen stored preset. Preset Save: this button allows to save the current parameters of DMP88 in one of the 16 internal memory locations. Choose one preset and a dialog box will confirm the storage. Be aware that the previous stored preset in the same location will be erased. Preset Load: this button allows to load in the current preset location a file .dmpdsp previously saved in your pc by means of File Save As… (Ctrl+S) command. At the top right bar there are: Edit Module: this button allows to change the DSP module sequence in each INPUT or OUTPUT for the current preset. Scrolling with the mouse on the interface the modules that you can edit are highlighted in red: click on the module with the mouse right button and one of the following menu appears:
With these commands is possible to build a custom channel strip for any input or output. Upload Params To Device: clicking this button the current parameters and channel strip layout are send to the DMP88 and stored in the current preset. Note: the Preset Save button only saves the parameters in a specified preset, while Upload Params To Device stores the parameters and channel strip layout in the current preset. This icon appears when the currently selected device is an online machine:
and disappear when the currently selected device is an offline machine:
37

RM88 ­ 8 ZONE PAGING MICROPHONE STATION
RM88 is the paging microphone base designed to be combined with the DMP88 to create a zone system with call on a single zone, a group of zones or all zones.
1 MIC INPUT Input for the supplied gooseneck microphone: it can operate with any balanced condenser microphones that accepts the +12V phantom power supply.
2 POWER This LED lights on when the station has the power supply.
3 BUSY This LED lights on when the station sends a command to the DMP88. NOTE: if this LED stays always on there is a communication error, please check the configuration further on this manual.
4 SIG This LED lights on when an audio signal is sent to the DMP88.
5 CLIP This LED lights on when excessive signal is sent to the DMP88. NOTE: ignore if it lights up sporadically, if it stays on almost all the time, lower the CHIME or MIC levels.
6 Z1…Z8 These buttons enable the selected zones when the TALK button is pressed.
7 ALL This button enables all the zones when the TALK button is pressed.
38

8 CHIME Press this button to enable the attention tone on the selected zones each time you press the TALK button: the LED shows that the chime is activated.
9 TALK Press and hold this button to make your announcement thru the PA system in the zones selected with buttons above. Release the button when the announcement is completed.
10 MIC LEVEL This potentiometer sets the level of the gooseneck microphone. Try and set a suitable level avoiding speaker feedback.
11 CHIME LEVEL This potentiometer sets the level of the attention tone signal.
12 SIGNAL OUTPUT This is the balanced LINE output of the CHIMES and MIC signals: it must be connected using a balanced shielded cable to the LINE INPUT 1 of the DMP88 unit.
13 +12V and RS485 CONNECTION This is the RS485 data port and +12V supply input port, and must be connected to the correspondent port of DMP88.
DMP88 must have the RS485 (Menu Setting / Device Setting…) set as follow:
and the Control Center Response to ON:
39

Use the following connection diagram: 40

DMP88 – TECHNICAL SPECIFICATION

Model: Processor Sampling rate/bit System Delay Input Channels Input Gain Input Level Input Max Level Input Impedance Phantom Power Output Channels Output Level Output Nominal Level Output Max Level Output Impedance Frequency Response THD+N Dynamic Range Noise (A-weighted) CMRR @ 50/60Hz Channel Isolation @ 1 KHz USB player/recorder
Controls
Operating temperature Power Supply Power Consumption Dimensions (WxHxD) Net Weight

DMP88 ADI SHARC 21489 48 KHz / 24 bit 3 mS 8x Balanced MIC/LINE 0 -48 dB (3dB step) -72 to +12 dB + 24 dBu 9.4 Kohm 48 V 8x Balanced LINE -72 to +12 dB 0 dBu (balanced) + 14 dBu (balanced) 102 ohm 20 ­ 20K Hz (±0.2 dB) < 0.003% at -10 dBu 110 dB < -91 dBu > 80 dB > 108 dB DMP DSP control software (Windows) POWER and STATUS LED OLED DISPLAY DMP DSP control software (Windows) Tablet/Phone iOS Android via APP GPIO RS485/RS232 RM88 (optional) WP88 (optional) 0 ÷ +45°C 100-230 V~ ±10% 50/60Hz 25 W 482 x 44 x 268 mm ­ 1U rack 19″ 2.7 Kg

Connectors 2x Phoenix COMBICON MC 1,5/12-ST-3,81
2x Phoenix COMBICON MC 1,5/12-ST-3,81
USB type A RJ45 ETHERNET (TCP-IP protocol) 2x Phoenix COMBICON MC 1,5/12-ST-3,81 1x Phoenix COMBICON MC 1,5/6-ST-3,81 RS485 RJ45 ETHERNET PoE (TCP/IP UDP protocol) VDE IEC C13

41

WP88 – TECHNICAL SPECIFICATION

Model:
Controls
Connection Operating temperature Power Supply Power Consumption Finish Dimensions (WxHxD) Net Weight

WP88 1.3″ OLED DISPLAY 1x KNOB with switch ETHERNET PoE (TCP/IP UDP protocol) 0 ÷ +45°C PoE < 100 mW Aluminium White 86 x 86 x 32 mm 0.26 Kg

Connectors
RJ45 RJ45

RM88 – TECHNICAL SPECIFICATION

Model: Input Input Max Sensitivity Input Impedance Frequency Response Mic Output Output Nominal Level Output Impedance THD+N Noise (A-weighted)
Controls
Connection Operating temperature Power Supply Power Consumption Finish Dimensions (WxHxD)
Net Weight

RM88 1x MIC with 12V Phantom Power -35 dBu 20 Kohm 80 Hz / 15 KHz 1x Gooseneck Electrect microphone 1x LINE 0 dBu 600 ohm < 0.1% at -0 dBu < -90 dBu 1x MIC Level 1x CHIMES Level 1x CHIMES switch 1x TALK switch 9x ZONE switches RS485 0 ÷ +45°C +12 V 100 mA Black 120 x 65 x 200 mm 0.62 Kg 0.75 Kg with gooseneck mic

Connectors XLR 3 poles Female Phoenix COMBICON MC 1,5/3-ST-3,81
Phoenix COMBICON MC 1,5/3-ST-3,81

42

43

PROEL S.p.A.
(World Headquarters – Factory) Via alla Ruenia 37/43
64027 Sant’Omero (Te) ­ Italy Tel: +39 0861 81241 Fax: +39 0861 887862
www.proel.com

Documents / Resources

PROEL DMP88 Digital Matrix Processor [pdf] Instruction Manual DMP88 Digital Matrix Processor, DMP88, Digital Matrix Processor, Matrix Processor, Processor

References

• User Manual