MSO8000HD Series Mixed Signal Oscilloscope

Introduction

This manual provides information on safety requirements, installation, and operation of the MSO8000HD series oscilloscope.

Copyright Information

Copyright is owned by Uni-Trend Technology (China) Co., Ltd. The warranty period is three years from the date of purchase. This warranty does not cover power cords, accessories, or fuses. UNI-T reserves the right to repair or exchange defective products. Original parts become the property of UNI-T. Customers must inform UNI-T of defects within the warranty period and arrange for shipping to a designated maintenance center. The warranty is void if defects are caused by accident, misuse, improper maintenance, or unauthorized modifications.

Trademark

UNI-T is a registered trademark of Uni-Trend Technology (China) Co., Ltd.

File Version

MSO8000HD-V2.0

Statement

• UNI-T products are protected by patent rights.
• UNI-T reserves the right to change product specifications and pricing.
• Licensed software is the property of UNI-T and its subsidiaries/suppliers.
• Information in this manual supersedes previous versions.
• Technical data is subject to change without prior notice.

Safety Requirement

This section outlines safety precautions to ensure safe operation. Users must follow these guidelines to avoid electric shock and personal injury. UNI-T is not liable for personal safety or property loss due to failure to follow these precautions.

Safety Precautions

Warning: Follow guidelines to avoid electric shock and personal injury. This device is for professional users. Use only as specified. Indoor use only unless otherwise stated.

Safety Statement

• Warning: Indicates a hazard that could result in personal injury or death if not observed.
• Caution: Indicates a hazard that could result in product damage or data loss if not observed.
• Note: Indicates important information.

Safety Sign Definitions

• Danger: Indicates possible danger of electric shock, potentially causing injury or death.
• Warning: Indicates caution is needed to avoid personal injury or product damage.
• Caution: Indicates potential damage to the device or other equipment if procedures are not followed.
• Note: Indicates potential problems if procedures are not followed.
• AC/DC: Alternating Current / Direct Current. Check region's voltage range.
• Grounding Terminals: Frame grounding, protective grounding, measurement grounding.
• Power Switch: Main power OFF/ON.
• Standby Power Supply: Device is not completely disconnected from AC power when the switch is off.

Power Supply Categories

• CAT II: Secondary electrical circuits connected to wall sockets via transformers or similar equipment.
• CAT III: Primary electrical circuits of equipment connected to the distribution board via power cord (e.g., household appliances, portable tools).
• CAT IV: Primary circuit of large equipment connected directly to the distribution board and outdoor power supply lines.

Certifications

• CE: Registered trademark of the EU.
• UKCA: Registered trademark of the UK.
• Complies with UL STD 61010-1, 61010-2-030 and CSA STD C22.2 No.61010-1, 61010-2-030.

Waste Disposal

Do not dispose of the device and accessories in trash. Dispose of them according to local regulations.

EFUP (Environment-Friendly Use Period)

This mark indicates the product is safe for 40 years; after which it should enter the recycling system.

Safety Requirement - Preparation Before Use

• Connect the device to the AC power supply using the provided power cable.
• Ensure the AC input voltage matches the device's rated value.
• Verify the line voltage switch and fuse are correct.
• Check all terminal rated values and marking instructions.
• Use only the special power cord approved by local and state standards. Ensure cord insulation is not damaged.
• Ground the instrument properly before powering on via the power cord's grounding conductor.
• Use the specified AC power supply and an approved power cord with intact insulation.
• Protect against static electricity: ground conductors before connecting power, test in an anti-static area if possible. Protection grade: 4 kV contact discharge, 8 kV air discharge.
• Measurement accessories are of lower class and not applicable to main power supply or CAT II, III, IV circuit measurements.
• Use input/output ports properly. Do not load signals beyond rated values. Ensure probes and accessories are effectively grounded.
• Use power fuses of specified specifications. Replacement must be done by authorized UNI-T personnel.
• Do not disassemble. Maintenance must be performed by qualified personnel.
• Use the device indoors in a clean, dry environment with ambient temperatures from 0 to 40°C. Avoid explosive, dusty, or humid air.
• Caution: If the device appears faulty, contact authorized UNI-T maintenance personnel.
• Do not block ventilation holes. Keep vents clear of foreign objects.
• Ensure adequate ventilation with at least 15 cm gaps on sides, front, and back.
• Transport safely to prevent damage.
• Keep vents clean and dry.
• Keep the product surface clean and dry.

Calibration

Note: Recommended calibration period is one year. Calibration should only be performed by qualified personnel.

Environmental Requirements

This instrument is suitable for:

• Indoor use
• Pollution degree 2
• Operating altitude: lower than 3000 meters; Non-operating altitude: lower than 15000 meters
• Operating temperature: 0 to +40°C; Storage temperature: -20 to +60°C
• Operating humidity: 90% RH at up to +35°C; Non-operating humidity: 60% RH at +35 to +40°C

Keep ventilation openings clear. Clean the housing with a dry or slightly moistened soft cloth. Disconnect power before cleaning.

Connecting Power Supply

Input AC Power Specifications:

• Voltage Range: 100V-240VACrms (±10% fluctuation)
• Frequency: 50/60Hz

Connect using the attached power cable. The instrument is a Class I safety product with a three-prong power cable for grounding.

• Ensure the power cable is in good condition.
• Leave enough space for connection.
• Plug into a well-grounded power socket.

Electrostatic Protection

Electrostatic discharge (ESD) can cause invisible damage. Measures to reduce ESD damage include:

• Testing in an anti-static area.
• Grounding internal and external conductors briefly before connecting the power cable.
• Ensuring all instruments are properly grounded.
• The device has a protection grade of 4 kV for contact discharge and 8 kV for air discharge.

File Format

This manual uses specific notation:

• Key character (bold) + textbox: Refers to a function key on the front panel (e.g., Utility).
• Menu character (bold): Refers to a menu item (e.g., "Setting").
• Operation Step ">": Indicates sequential operations (e.g., Utility > System).
• Connector [text]: Refers to a connector on the front or rear panel (e.g., [TRIG OUT]).
• Rotary Knob name: Refers to a rotary knob on the front panel (e.g., "Scale" (vertical)).

MSO8000HD Series Mixed Signal Oscilloscope

The MSO8000HD series is a new mixed-signal oscilloscope from UNI-T, offering bandwidth up to 8GHz and sampling rate up to 20GSa/s for high-speed signal analysis. It features UltraAcq® technology for high waveform capture rates (300,000wfms/s, 1,000,000wfms/s in Sequence mode) and a 1Gpts storage depth for capturing anomalous signals. It supports multiple trigger decoding, advanced measurements (sequential mode, histogram, power analysis, jitter analysis, eye diagram, template measurement), and has 52 automatic measurement parameters. The oscilloscope runs on a Win10 64-bit operating system and features a 15.6-inch capacitive touch screen with multi-window split-screen display and gesture control. It is suitable for communication, aerospace, and education industries.

Models:

Note: □ indicates an option. Only MSO8504HD supports DC1M and AC1M.

Main Features

• Analog channel bandwidth: up to 8GHz (8GHz/5GHz)
• Maximum sampling rate: 20GSa/s
• Maximum storage depth: 2Gpts (standard configuration)
• Wave capture rate: 300,000wfms/s (UltraAcq® mode); 1,000,000wfms/s (Sequence mode)
• Multiple trigger types: edge, pulse width, slope, video, code pattern, timeout, runt, setup & hold, delay, duration, Nth-edge, zone trigger.
• 11 kinds of serial protocol analysis: RS232/422/485/UART, I²C, SPI, CAN, CAN-FD, LIN, FlexRay, SENT, MIL-STD-1553, ARINC 429, AudioBus (I2S/LJ/RJ/TDM).
• Integrated functions: digital oscilloscope, logic analyzer, frequency spectrum analyzer, function/arbitrary waveform generator, digital voltmeter, frequency meter, protocol analyzer.
• 52 parameter measurements, supporting histogram, trace, and tendency charts.
• Advanced measurement analysis: power analysis (option), jitter & eye diagram (option), template test, histogram consistency analysis (Option), search navigation.
• Win10 64-bit OS with a 15.6-inch high-definition capacitive touch screen supporting multi-gesture operations.
• Built-in WebServer for remote access via browser on PC/smartphone.
• SCPI (Standard Command for Programmable Instrument) support.
• Various interfaces: USB Host & Device, LAN, HDMI, AUX In/Out, 10MHz Ref In/Out.
• 8-channel waveform operation, built-in frequency spectrum analysis, peak search, Matlab embedded programming support, enhanced resolution up to 3 bits.
• Built-in dual-channel function/arbitrary waveform generator (60MHz).
• Built-in 16-channel logic analyzer: 1.25GSa/s sampling rate, 125Mpts storage depth.

1. Quick Guide

This chapter introduces the initial use of the MSO8000HD series oscilloscope, including front and rear panels, user interface, and touch screen functions.

1.1 General Inspection

Before first use, perform the following inspections:

• Check for Transport Damages: If packaging is damaged, contact the UNI-T distributor.
• Check Attachments: Verify all accessories are present and undamaged (refer to appendix).
• Machine Inspection: If the instrument appears damaged or not working, contact UNI-T or distributors. Keep packaging and notify the carrier if damaged during shipping.

1.2 Before Use

Follow these steps for a quick verification of normal operations:

1. Connecting to the Power Supply: Use the attached power line or a compliant one. The power switch on the rear panel must be ON. The power soft indicator on the rear panel illuminates orange when the switch is ON. Press the soft switch key to enable the oscilloscope.
2. Boot Check: Press the soft power key. The indicator changes from orange to blue. The oscilloscope displays a boot animation and enters the normal interface.
3. Connecting Probe: Connect the probe's BNC to C1 on the oscilloscope. Connect the probe compensation signal clip to the probe and the ground alligator clip to the ground terminal. The compensation signal is approximately 3Vpp at 1kHz.
4. Function Check: Press the [Autoset] key. A 3Vpp, 1kHz square wave should appear. Repeat for all channels. If the waveform is incorrect, proceed to probe compensation.
5. Probe Compensation: This step calibrates the probe to the input channel to prevent measurement errors.
   • Set the probe attenuation coefficient to 10x and the probe switch to 10x. Connect the probe to C1.
   • Connect the probe to the probe compensation signal clip and the ground clip to the ground terminal. Open C1 and press [Autoset].
   • Observe the waveform. If it shows "Insufficient Compensation" or "Excessive Compensation", adjust the probe's variable capacitance with a non-metallic screwdriver until it matches "Correct Compensation".

   Warning: To avoid electric shock when measuring high voltage, ensure probe insulation is good and avoid contact with metallic parts.

1.3 External Dimension

[Description of Front View and Side View diagrams, indicating dimensions and overall shape.]

1.4 Front Panel

[Description of the front panel layout, mentioning key areas like the display, trigger controls, function controls, and ports.]

Table 1: Front Panel Function Keys

1.5 Rear Panel

[Description of the rear panel layout, mentioning interface ports.]

Table 2: Rear Panel Interfaces

Interface Descriptions:

• 1. Function/Arbitrary Waveform Generator Output: For waveform generation.
• 2. Digital Channel Input: Terminal for digital channel signals.
• 3. Safety Lock: For securing the oscilloscope.
• 4. USB-TypeC Port: For data transfer or power.
• 5. HDMI: High-definition multimedia port for external display.
• 6. LAN: For network connection and remote control.
• 7. USB Host: Connects USB storage devices for saving/recalling files and upgrading software.
• 8. USB Device: Connects to a computer for communication.
• 9. Power Switch: Main power ON/OFF. Requires 100-240V, 50-60Hz.
• 10. Ground Terminal: For grounding and static discharge.
• 11. External Trigger Input: For external trigger signals.
• 12. Aux Out: Synchronous output, measured results, or AWG trigger output.
• 13. Aux In: Synchronous input or AWG external trigger input.
• 14. 10MHz Ref Out: Outputs a 10MHz reference clock for synchronization.
• 15. 10MHz Ref In: Provides a reference clock for sampling.

1.6 Operation Panel

The operation panel is divided into several control areas:

(1) Vertical Control Area

• C1-C4 keys: Activate/deactivate analog channels. Channel colors correspond to waveforms and input connectors.
• [Math]: Opens mathematical operations (FFT, digital filter, advanced operations).
• [Ref]: Loads reference waveforms for comparison.
• [Digital]: Activates the logic analyzer and sets channel/threshold levels.
• [Bus]: Opens the bus state window for protocol selection (e.g., RS232, I2C).
• Vertical "Position" knob: Adjusts the vertical position of the selected channel's waveform. Pressing resets to the vertical midpoint.
• Vertical "Scale" knob: Adjusts the vertical scale (volts per division). Clockwise decreases scale, counterclockwise increases.

(2) Horizontal Control Area

• Horizontal "Position" knob: Shifts the trigger point left/right on the screen. Pressing resets to the horizontal midpoint.
• Horizontal "Scale" knob: Adjusts the time base scale (time per division) for all channels.

(3) Trigger Control Area

• [Single]: Sets trigger mode to Single. Indicator turns green. Captures one trigger event.
• [Normal]: Sets trigger mode to Normal. Indicator turns white. Captures only when trigger condition is met.
• [Auto]: Sets trigger mode to Auto. Indicator turns white. Waveform refreshes continuously.
• Level Rotary Knob: Adjusts the trigger level.
• [Force]: Forces a trigger event.
• [Menu]: Opens the trigger setting menu with multiple trigger types.

(4) Automatic Setting

Pressing [Autoset] automatically adjusts vertical scale, time base, and trigger mode for optimal waveform display. Caution: Requires sine wave frequency > 20Hz and amplitude between 20mVpp-120Vpp for accurate results.

(5) Run/Stop

Pressing [Run/Stop] toggles between RUN (green indicator) and STOP (red indicator) states.

(6) Functional Area

• Multifunction Rotary Knob: Moves or locates cursors.
• [Cursors]: Turns cursors ON/OFF and allows setting type, movement, and position.
• [Meas]: Directly enables parameter measurement (52 parameters).
• [Quick Meas]: Directly enables parameter snapshot (35 parameters).
• [UltraAcq]: Sets acquisition mode to fast sampling or normal sampling.
• [Start menu]: Opens the start menu for functions like Lissajous, Limit test, Power analysis, Jitter analysis, Eye diagram.
• Custom buttons: Support user-defined functions.
• [Screenshot]: Captures and saves the screen.
• [Clear]: Clears old waveforms and measurement parameters.
• [Push to Fine]: Activates fine adjustment for cursor position and numerical input.
• [DVM]: Opens digital voltmeter measurement (DC, AC RMS, DC+AC RMS).
• [Gen]: Opens the dual-channel function/arbitrary waveform generator.
• [Touch Lock]: Locks the touch function.
• [Default]: Restores factory settings.

1.7 User's Interface

The user interface displays various icons and information:

Table 3: Icons in User's Interface

UI Element Descriptions:

• 1. Company logo: UNI-T.
• 2. Trigger Status: Displays [Triggered], [Auto], [Ready], [Stop], [Roll].
• 3. Single Trigger: Sets trigger mode to Single.
• 4. Autoset: Automatically adjusts display parameters. Note: Accuracy depends on signal characteristics.
• 5. Horizontal Scale and Delay: Displays time base and trigger point position. Adjustable via touch or panel knobs.
• 6. Acquisition Mode, Memory Depth, Sample Rate: Displays current settings.
• 7. Trigger Information: Shows source, type, and level. Level is adjustable via touch or knob.
• 8. Cursor: Enables cursor menu for ON/OFF, type, movement, and measurement.
• 9. FFT: Opens an FFT math window.
• 10. UltraAcq® Mode: Increases waveform capture rate.
• 11. Search and Navigation: Enables waveform search functions.
• 12. Save: Opens save interface for waveforms, screenshots, and system settings.
• 13. Quick Screenshot: Performs a quick screenshot.
• 14. Clear: Clears displayed waveforms and parameters.
• 15. System Setting: Accesses settings for brightness, calibration, communication, etc.
• 16. Start Menu: Opens a menu for various functions.
• 17. Zone Draw: Used for area histogram statistics and zone trigger.
• 18. Zoom: Allows horizontal zooming of waveforms.
• 19. Main Window Display Settings: Adjusts afterglow, grid, waveform brightness, etc.
• 20. Trigger Level: Displays current trigger level cursor.
• 21. Frequency Counter: 8-digit high-precision hardware frequency counter.
• 22. DVM: 4-digit DC/AC RMS/DC+AC RMS voltage measurement.
• 23/24. AWG: Opens function/arbitrary waveform generator channels G1 and G2.
• 25. Protocol Analyzer: Opens software for 11 protocol analysis functions.
• 26. Logic Analyzer: Opens software for 16-channel digital analysis.
• 27. REF: Adds reference waveforms for analysis.
• 28. Math: Opens mathematical operation functions (FFT, basic ops, filter, Matlab).
• 29. Channel Status Label: Displays channel activation, coupling, bandwidth limit, scale, probe attenuation, and inversion.
• 30. Measurement Bar Menu: Accesses DVM, frequency meter, parameter snapshot, threshold settings, statistics, etc.

1.8 Touch Screen

The MSO8000HD features a 15.6-inch capacitive touch screen with multi-point and gesture control for intuitive operation.

• Tap: Use one finger to tap icons or words for selection or to open menus.
• Squeeze: Use two fingers to zoom in or out on waveforms, adjusting horizontal or vertical scales.
• Drag: Use one finger to press and drag items like waveforms, windows, or cursors to reposition them.

1.9 Virtual Keyboard

Used for inputting text and characters. Features include Caps Lock, Shift key, Space key, Confirm/Cancel, and an Input display area.

1.10 Numeric Keyboard

Used for inputting numerical values and units. Features include an input area, number input keys (with +/- and backspace), and a unit input area that adapts to the function.

2. Vertical System

This chapter details the vertical system settings for channels C1-C4. The setup method is identical for each channel.

• Open/Activate/Close Analog Channel
• Channel Coupling
• Bandwidth Limit
• Vertical Scale
• Vertical Position
• Offset Voltage
• Unit
• Reversed Phase
• Tab
• Probe Multiplying Power
• Multi-channel Display
• Setting Channel Delay

2.1 Open/Activate/Close Analog Channel

Channels can be in three states: Selected, Open but not Selected, or Off.

• Open: Channel is active and displayed with a specific color. Panel operation: Press channel key (1-4). Touch operation: Tap the grey block.
• Off: Channel waveform is not displayed. Panel operation: Press an active channel key again. Touch operation: Slide down on the channel tab.
• Selected: Only one channel can be selected at a time for adjustment. Panel operation: Press an open but unselected channel key. Touch operation: Click the channel menu.

2.2 Channel Coupling

Set channel coupling in the channel menu. Options: DC1M, DC50, AC1M, Ground.

2.3 Bandwidth Limit

Limits the signal bandwidth. Options depend on impedance (1MΩ or 50Ω). High-frequency signals above the limit are attenuated. Useful for reducing high-frequency noise when observing low-frequency signals.

• 1MΩ: Full bandwidth or 20MHz.
• 50Ω: Full bandwidth, 4GHz, 500MHz, or 20MHz.

2.4 Vertical Scale

Adjusts the vertical scale (Volts per division). Range: 1mV/div to 10V/div (1MΩ) or 1mV/div to 1V/div (50Ω), in 1-2-5 steps. Adjustable via panel knob, touch gestures (squeeze), or numeric keypad input.

2.5 Vertical Position

Adjusts the vertical position of the waveform on the screen without changing its voltage value. Adjustable via panel knob, touch gestures (slide up/down), or numeric keypad input. The waveform movement is limited to 1.5div vertically.

2.6 Offset Voltage

Sets a voltage offset for the channel. The channel voltage and waveform position change accordingly. Can be set to 0mV by clicking the '0' tab.

2.7 Unit

Allows customization of the vertical scale unit via the numeric keyboard (e.g., A/mA for current probes).

2.8 Reversed Phase

Reverses the waveform's voltage polarity. An inversion icon ⌀ appears when enabled.

2.9 Tab

Allows customizing channel tab names for easier identification, displayed on the left side of the screen.

2.10 Probe Multiplying Power

Sets the probe attenuation coefficient (e.g., x1, x5, x10, x100) to match the probe. The oscilloscope automatically recognizes probes with detection pins.

2.11 Spare Units

Allows custom input of alternate units and their conversion ratios for different measurement scenarios.

2.12 Setting Channel Delay

Compensates for probe cable transmission delay to ensure phase consistency between channels, crucial for high-precision measurements. Minimum step is 100ps, adjustable up to ±800ps. Valid for time base ranges of 50ns/div or lower.

2.13 Channel Copy

Copies settings (coupling, bandwidth limit, offset) from one channel to others with a single click.

3. Horizontal System

This chapter covers horizontal system settings:

• Horizontal Scale
• Horizontal Delay
• Roll Mode

3.1 Horizontal Scale

Sets the time base (time per division). Adjustable via panel knob, touch gestures (squeeze), or numeric keypad. The scale changes in 1-2-5 steps.

3.2 Horizontal Delay

Shifts the trigger point horizontally relative to the screen center. Adjustable via panel knob, touch gestures (slide left/right), or numeric keypad. Positive values shift left, negative values shift right.

3.3 Roll Mode

When the trigger mode is 'Auto' and the horizontal scale is less than 50ms/div, the oscilloscope enters ROLL mode. Waveforms scroll from right to left, displaying a continuous voltage-time trend. Recommended to use 'DC' coupling in this mode.

4. Sampling System

This section details the sampling process:

• Sampling Rate
• Acquisition Mode
• Storage Depth
• Sequence Mode
• ERes

4.1 Sampling Rate

Sampling converts analog signals to digital data. The sampling rate is the time interval between samples. The MSO8000HD has a maximum rate of 20GSa/s, which varies with the number of active channels.

• Effect of Low Sampling Rate: Can cause waveform distortion, aliasing (incorrect frequency representation), and missing waveform details or pulses.
• Interpolation Method: Inserts calculated values between data points to improve waveform clarity. Options include Linear and Sine interpolation.

4.2 Acquisition Mode

Determines how waveform data is captured and displayed:

• Normal Sampling: Samples at equal time intervals for optimal display of most waveforms.
• Peak Sampling: Captures maximum and minimum values within each sampling interval, useful for detecting narrow pulses but may increase noise appearance.
• High Resolution: Averages adjacent sampling points to reduce random noise and smooth waveforms.
• Average: Averages multiple captured waveforms to reduce random noise. Maximum average is 65536.

4.3 Storage Depth

The number of waveform points stored per acquisition. The MSO8000HD offers up to 2Gpts (single channel) or 1Gpts (multi-channel). Options include Auto, 100Kpts, 1Mpts, 10Mpts, 100Mpts, 1Gpts, and 2Gpts.

4.4 ERes (Enhanced Resolution)

Implemented via FPGA, ERes improves voltage resolution and signal-to-noise ratio by filtering. It can enhance resolution by 0.5 to 3 bits, affecting the effective bandwidth.

5. Trigger System

The trigger system determines when data acquisition begins, converting unstable signals into stable waveforms. It allows observation of pre-trigger and post-trigger data.

• Noun of Trigger System
• Edge Trigger
• Pulse Width Trigger
• Video Trigger
• Slope Trigger
• Runt Pulse Trigger
• Delay Trigger
• Timeout Trigger
• Duration Trigger
• Setup & Hold Trigger
• N-th Edge
• Pattern
• Serial Trigger
• Zone Trigger

5.1 Noun of Trigger System

• Trigger: Captures and displays a waveform section when specific conditions are met. Functions include isolating events and synchronizing displays.
• Trigger Source: Can be Analog channels (C1-C4), Digital channels (D0-D15), EXT, EXT5, AC power, or Aux In.
• Trigger Mode:
  • Auto: Continually collects data, suitable for DC signals or unknown levels.
  • Normal: Collects data only when trigger conditions are met. Waveforms remain on screen until the next trigger. Suitable for capturing specific events or rare triggers.
  • Single: Captures one trigger event and then stops. Suitable for casual or aperiodic signals.
• Trigger Coupling: Affects signal transmission to the trigger circuit. Options: DC, AC, LF rejection, HF rejection, Noise suppression. (Only for edge triggering).
• Pre-trigger/Delay Trigger: Allows observation of data before or after a trigger event.
• Force Trigger: Forces a trigger signal, useful for checking sampling or in Normal/Single modes.
• Trigger Holdoff: Sets a waiting period after a trigger before the next trigger can occur, useful for complex repeating waveforms.

5.2 Edge Trigger

Triggers on rising, falling, or random edges of a signal. Settings include source, coupling, mode, and threshold level.

5.3 Pulse Width Trigger

Triggers on pulses with a specified width. Settings include source, pulse width condition (greater than, less than, within range), upper/lower limits, and polarity.

5.4 Video Trigger

Supports NTSC and PAL video standards. Triggers on field, line, even/odd fields, or specified lines.

5.5 Slope Trigger

Triggers based on the slope (rising/falling) of a signal and its duration. Settings include source, edge type, condition (duration greater than, less than, within range), and level thresholds.

5.6 Runt Pulse Trigger

Triggers on pulses that cross one trigger level but not the other (short pulses). Settings include source, polarity (positive/negative runt), condition, levels, and pulse width limits.

5.7 Delay Trigger

Triggers when the time difference (T) between edges from two specified sources meets preset time limits.

5.8 Timeout Trigger

Triggers when the time interval (T) between signal edges crossing the trigger level exceeds a set duration.

5.9 Duration Trigger

Triggers based on the duration (T) of a specified code pattern (combination of channel logic states H, L, X).

5.10 Setup & Hold Trigger

Triggers when setup or hold times between data and clock signals fall outside preset limits. Used for locating timing errors.

5.11 N-th Edge

Triggers on the N-th edge after a specified idle time between edges.

5.12 Pattern

Triggers on a specific code pattern (combination of channel logic states H, L, X) or edge transition within a pattern.

5.13 Serial

Supports trigger and decoding for 11 serial protocols:

• RS232/422/485/UART
• I2C
• SPI
• CAN
• CAN-FD
• LIN
• FlexRay
• AudioBus (I2S, LJ, RJ, TDM)
• MIL-STD-1553
• ARINC429
• SENT

Each protocol has specific setup parameters for decoding, including source, baud rate, polarity, data format, and error conditions.

5.14 Zone Trigger

Allows drawing rectangular areas (A and B) on the screen to trigger on waveform intersections or non-intersections with these areas. Requires UltraAcq mode to be enabled.

6. Protocol Decoding (Option)

This section details the protocol decoding capabilities for various serial buses.

6.1 RS232

Asynchronous transmission standard. Setup includes bus display, format, event list, tab, offset, source, baud rate, polarity, bit sequence (MSB/LSB), bit width, stop bit, and parity check (none, even, odd).

6.2 I2C

Two-wire bus (SDA, SCL) for microcontroller communication. Setup includes bus display, format, event list, tab, offset, source (data/clock), threshold, and bit width (7 or 10 bits).

6.3 SPI

Synchronous serial interface (MOSI, MISO, SCLK, CS). Setup includes bus display, format, event list, tab, offset, decoding mode (TIMEOUT, CS), clock input (edge, threshold), data input (polarity, threshold), and bit order (MSB/LSB).

6.4 CAN

Controller Area Network. Setup includes bus display, format, event list, tab, offset, signal type (CAN_H/CAN_L), signal input, signal rate, and sampling point.

6.5 CAN-FD

CAN with Flexible Data Rate. Offers higher transmission rates and data lengths. Setup includes bus display, format, event list, tab, offset, signal type (CAN-FDH/CAN-FDL), signal input, SD signal rate, FD signal rate, arbitration field sampling point, and data field sampling point.

6.6 LIN

Local Interconnect Network, a low-cost serial protocol. Setup includes bus display, format, event list, tab, offset, source, polarity, threshold, baud rate, signal standard (LIN1.0/2.0), sampling point, and ID parity bits.

6.7 FlexRay

High-speed, deterministic, fault-tolerant bus for automotive applications. Setup includes bus display, format, event list, tab, offset, source type (BP/BM), signal rate, channel type (A/B), indicating bit, ID, cycle number, data, end of frame, and error package settings.

6.8 AudioBus

Inter-IC Sound (I2S) standard for audio data transmission. Supports I2S, Left-Justified (LJ), Right-Justified (RJ), and TDM modes. Setup includes bus display, format, event list, tab, offset, protocol type, signal settings (source, threshold), word selection polarity, clock feature (edge), number of sound channels, clock/data bits, and sound channel type (left/right).

6.9 MIL-STD-1553

Military standard for avionics systems. Setup includes bus display, format, event list, tab, offset, source, baud rate, threshold level, and data polarity.

6.10 ARINC429

Aeronautical Radio Inc. standard for digital information transfer in avionics. Unidirectional bus. Setup includes bus display, format, event list, tab, offset, source, signal rate, threshold level, decoding mode (19/21/23-bit), and polarity.

6.11 SENT

Single Edge Nibble Transmission for vehicle sensors. Setup includes bus display, format, event list, tab, offset, signal input, signal polarity, threshold level, clock period, clock tolerance, mode (Fast/Slow channel), data length, pause bit, and data segment format.

7. Automatic Measurement

The MSO8000HD can automatically measure 52 types of parameters.

• Parameter Measurement
• Parameter Snapshoot
• Add Measurement Parameter
• Measurement Statistics
• Threshold Measurement
• Measure Operations
• Reset Statistics
• Delete Measure

7.1 Parameter Measurement

Measures vertical, horizontal, and other parameters.

• Vertical Parameters: Max, Min, Pk-Pk, High, Low, Middle, Amplitude, Average (Mean), RMS, AC RMS, +Overshoot, -Overshoot, CycMax, CycMin, CycRMS, CycMean, CycPK-PK, CycMid, +Preshoot, -Preshoot.
• Horizontal Parameters: Period, Frequency, Rise time, Fall time, +Pulse Width, -Pulse Width, +Duty cycle, -Duty cycle, Time@Max, Time@Min, Rise time@Lv, Fall time@Lv, Period@Lv, Frequency@Lv, Pulse width@Lv, Duty cycle@Lv, Phase@Lv, RRD@Lv, FFD@Lv, RFD@Lv, FRD@Lv, Skew, Data points, Cycle num, Rise edge num, Fall edge num, Pos pulse num, Neg pulse num, Setup time, Hold time.
• Other Parameters: Area, Cycle area.

7.2 Parameter Snapshoot

Displays results of all parameter measurements. Marked with channel color. "----" indicates no signal or invalid result.

7.3 Add Measurement Parameter

Allows users to select specific parameters for continuous observation. Added parameters are displayed in the lower left corner and can be used for statistics or trend analysis.

7.4 Measurement Statistics

Calculates and analyzes added parameters in real-time, supporting Max, Min, Average, Standard Deviation, and sample statistics.

7.5 Threshold Measurement

Limits the measurement domain to the entire screen or a specific cursor range.

7.6 Measure Operations

Supports arithmetic operations (+, -, ×, ÷) between multiple measurement parameters.

7.7 Reset Statistics

Resets all statistics for added measurement items.

7.8 Delete Measure

Deletes all added measurement parameters.

8. Cursor Measurement

Enables time-domain and frequency-domain cursor measurements.

• Display: ON/OFF.
• Source: C1-C4, Math, Ref.
• Type: Horizontal (time/frequency), Vertical (voltage/power).
• A/B Position: Position of cursors A and B, adjustable via knob, touch, or numeric keypad.
• Data Display: Suspend or Fixed.
• Waveform Tracking: Cursors follow waveform scale/position changes.
• Synchronous Movement: Moving one cursor moves the other, maintaining relative distance.
• Position Display: Absolute or Relative value.
• Horizontal Unit: s, %.
• Vertical Unit: s, V, %.

8.1 Time-domain Cursor

Measures time (X) and voltage (Y) differences between cursors. Can also calculate frequency (1/X) and voltage/time slope (Y/X).

8.2 Frequency-domain Cursor

Measures frequency (X) and amplitude/power (Y) differences in the frequency domain. Can also calculate time (1/X) and amplitude/power per frequency unit (Y/X).

9. Mathematical Operation

Provides various mathematical operations:

• Basic Operation
• FFT
• Filter
• ERes
• Advanced Operation
• User-defined Operation

Operations can be performed on analog, mathematical, or reference waveforms. Results are displayed as MATH waveforms.

9.1 Basic Operation

Supports point-by-point addition, subtraction, multiplication, and division of waveforms.

9.2 FFT

Fast Fourier Transform converts time-domain signals to frequency-domain. Useful for analyzing harmonic content, noise, and vibration. Settings include vertical unit (Vrms, dBm), frequency range (center, span), count (points), window function (Hamming, Blackman, Rectangle, Hanning, Flat-top), and output mode (Magnitude, Power, Psd, Real, Imaginary, Phase).

9.3 Filter

Applies digital filters: Low-pass, High-pass, Band-pass, Band-limited. Settings include cut-off frequencies. Supports custom filter design (FIR, IIR) with amplitude-frequency, phase-frequency, and impulse response characteristics.

9.4 Advanced Operation

Supports embedded Matlab program execution and data presentation directly on the oscilloscope. Includes code compiler, working directory setup, import/save functions.

9.5 User-defined Operation

Allows creating custom mathematical expressions using channel inputs and operations. Supports editing, loading, and saving expressions.

9.6 Multiple Windows

Enables displaying mathematical operations, reference waveforms, protocol analysis, or digital channels in independent windows for better visualization and comparison.

10. Reference Waveform

Supports loading up to four reference waveforms from internal or external storage for comparison with live signals.

• Open Reference Function: Load waveform files via the [Ref] key or menu.
• Adjust Reference Waveform: Control display ON/OFF, separate window display, switch files, adjust scale/position, and set tab names.
• Close Reference Waveform: Delete or hide reference waveforms.

11. Pass/Fail Test

Monitors signal changes and determines product compliance using Limit Test and Standard Mask Test. Results can be displayed on screen or signaled via AUX OUT.

11.1 Limit Test

Create Template: Turn test ON/OFF, select source (C1-C4), choose Limit Test type, set vertical/horizontal tolerance, and click "Create".

Set End Condition: Define number of violations and total waveform/time for the test.

Set Fail Operation: Configure actions on failure: Pulse output (Aux Out), Save screenshot, Alarm, or Screen capture.

Display Template: Toggle template visibility.

Run Test: Start the test. P/F status bar shows current state, violations, time, and targets.

11.2 Standard Mask Test

[Description of Standard Mask Test functionality, similar to Limit Test but using predefined masks.]