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Rigol DM3068 - Service Manual

Rigol DM3068
70 pages
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RIGOL
Service Guide
DM3068 Digital Multimeter
Feb. 2014
RIGOL Technologies, Inc.

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Questions and Answers

  • L
    Lisa BakerAug 16, 2025
    Why Rigol Multimeter does not start?
    • A
      Andrew ReillyAug 16, 2025
      If your Rigol Multimeter doesn't start, check the following: * Ensure the power is correctly connected. * Verify the power switch on the rear panel is turned on. * Confirm the power indicator on the front panel is lit. * Inspect the power fuse on the back and replace it if blown. * Check if the voltage selector is set to the correct level. If it still fails to work, contact your local RIGOL distributor.
  • R
    richardallenAug 18, 2025
    What to do if current measurement does not work on Rigol Multimeter?
    • B
      bstewartAug 18, 2025
      If current measurement isn't working on your Rigol Multimeter, check the connections of the current input terminals and inspect the current input fuse.
  • T
    Thomas RyanAug 21, 2025
    How to fix unstable readout on Rigol DM3068 during small capacitance measurement?
    • J
      Jonathan NelsonAug 22, 2025
      To stabilize the readout and reduce large offset during small capacitance measurement on your Rigol Multimeter: * Ensure you are using a shielded cable. * Disconnect the measured capacitance and use the 'REL' operation to clear any zero offset.
  • B
    Brian ThorntonAug 25, 2025
    What to do if Rigol DM3068 Multimeter self-test failed?
    • E
      ebrewerAug 26, 2025
      If the self-test on your Rigol Multimeter fails, check if the voltage selector is set to the proper scale. Also, disconnect all inputs and restart the self-test.
  • U
    uburnettAug 28, 2025
    How to fix dark screen backlight on Rigol DM3068 Multimeter?
    • S
      Shawn ColemanAug 28, 2025
      To address a dark screen backlight on your Rigol Multimeter, regulate the backlight brightness and contrast. For further assistance, refer to 'Screen' in 5.2.4 Replaceable Part list.
  • J
    Jennifer HesterAug 31, 2025
    Why cannot connect to Rigol Multimeter through LAN interface?
    • D
      Dana PerezAug 31, 2025
      If you cannot connect to your Rigol Multimeter through the LAN interface: * Ensure you are using the correct network cable and that it is properly connected. * Check the network connection indicator; if it's dark, the LAN may have issues. * Verify that the settings for DHCP, IP address, and DNS match the LAN settings. * Try turning on DHCP and AutoIP to allow the network to automatically assign an IP address. * Confirm that the browser being used has the same IP address as your meter.
  • M
    Marcia ClarkSep 2, 2025
    How to fix the slow readout on Rigol DM3068?
    • M
      Mark JohnsonSep 3, 2025
      If the readout on your Rigol Multimeter becomes slow or stops during measurement: * Check for any changes to the auto trigger interval and restore it if necessary. * Check the Single button indicator; if it's always on, press RUN to disable single trigger mode. * Ensure the external trigger function is disabled. * Make sure the meter is in Local mode.
  • K
    kristin60Sep 5, 2025
    Why cannot connect to Rigol DM3068 through USB interface?
    • C
      chandillonSep 5, 2025
      If you're having trouble connecting to your Rigol Multimeter via USB: * Check the USB connection. * Ensure you have the latest driver from the RIGOL website. * If multiple USB devices are connected to your PC, verify that the software correctly identifies the meter.
  • H
    Hannah JonesSep 9, 2025
    Why cannot connect to Rigol DM3068 through GPIB interface?
    • K
      kingrodneySep 9, 2025
      If you cannot connect to the meter through the GPIB interface: * Check if the GPIB address is correct. * Check the connection of the GPIB cable. * Check if the software edition matches the used firmware version.
  • J
    Jessica WilliamsSep 12, 2025
    What to do if cannot enter the measurement interface after switched on Rigol DM3068?
    • R
      Ryan GriffinSep 12, 2025
      If you cannot enter the measurement interface after switching on your Rigol Multimeter, restart the meter after 5 seconds off. If the problem persists, disconnect all external devices and restart the meter.

Summary

Guaranty and Declaration

Safety Requirement

General Safety Summary

Overview of essential safety precautions for operating the instrument safely and preventing hazards.

Safety Terms and Symbols

General Care and Cleaning

General Care

Guidelines for storing and maintaining the instrument's condition to prevent damage.

Cleaning

Steps for cleaning the exterior surface of the instrument to maintain optimal performance.

Environmental Considerations

Product End-of-Life Handling

Information on the proper disposal and recycling of the product at the end of its service life.

Chapter 1 Specifications

DC Characteristics

Detailed accuracy specifications for DC voltage, current, and resistance measurements.

AC Characteristics

Detailed accuracy specifications for AC voltage and current measurements across various frequencies.

Frequency and Period Characteristics

Accuracy specifications for measuring frequency and period, including low frequency errors.

Capacitance Characteristics

Accuracy specifications for capacitance measurements and related measuring characteristics.

Temperature Characteristics

Accuracy specifications for temperature measurements using RTD and thermocouple probes.

Measurement Rate

Details on the measurement speed (readings per second) for different functions and settings.

Other Measurement Characteristics

Information on triggering, storage, VMC output, and history record capabilities of the instrument.

General Specifications

Overview of the instrument's display, power, environment, safety, EMC, weight, and interfaces.

Chapter 2 Performance Test

Test Type

Introduction to Self-test, Fast test, and Routine test methods for verifying instrument performance.

Testing Equipments

List of recommended equipment and precision requirements for performing instrument tests.

Test Conditions

Recommended environmental and operational conditions for accurate instrument performance testing.

Input Connections

Guidance on proper input terminal connections for various tests, including zero-offset and capacitance.

Routine Test

Procedures and specifications for performing routine tests, including zero-offset and gain tests.

Chapter 3 Calibration

Calibration Interval

Recommended calibration intervals based on measurement accuracy requirements.

Calibration Notice

Information regarding the necessity of recalibration to ensure measurement accuracy.

To Obtain Calibration Service

Instructions on how to send the instrument for professional calibration services.

Chapter 4 Disassembly & Assembly

Disassembly and Assembly Notices

Safety precautions and tools required for disassembling and assembling the instrument.

The 3 D View of DM3068

Visual overview of the instrument's main parts to aid in disassembly and assembly understanding.

To Disassemble and Assemble Handle

Step-by-step instructions for removing and reattaching the instrument's handle.

To Disassemble and Assemble Rear Panel

Procedure for removing and reinstalling the rear panel of the instrument.

To Disassemble and Assemble Metallic Shell

Guidance on removing and reassembling the instrument's metallic outer shell.

To Disassemble and Assemble Fuse Seat

Instructions for disassembling and assembling the fuse seat component of the instrument.

To Disassemble and Assemble GPIB PCB

Procedure for removing and reinstalling the GPIB PCB within the instrument.

To Disassemble and Assemble Filter Board & Transformer

Steps for disassembling and reassembling the filter board and transformer assembly.

To Disassemble and Assemble Front Panel & LCD

Instructions for removing and reinstalling the front panel and LCD display assembly.

To Disassemble and Assemble the Fan

Procedure for disassembling and reassembling the instrument's internal fan.

To Disassemble and Assemble Mainboard

Guidance on removing and reinstalling the main logic board of the instrument.

To Disassemble and Assemble Keypad PCB

Steps for disassembling and reassembling the keypad PCB assembly.

Chapter 5 Troubleshooting & Maintenance

Troubleshooting

Common issues, potential causes, and solutions for instrument malfunctions and startup problems.

System Maintenance

Guidelines for maintaining instrument performance and extending its service life through proper usage.

Principles of Circuit

Overview of the instrument's circuit design, including floating, grounding, and power circuits.

Components Inspection

Procedures for inspecting key components like fuses and transformers to diagnose faults.

Replaceable Part list

List of available replaceable parts with their part numbers and quantities for maintenance.

Warranty

Information on the product warranty terms, coverage, and service contact details.

Rigol DM3068 Specifications

General IconGeneral
Display Digits6.5
Power Supply100-240 V AC, 50/60 Hz
Weight3.7 kg
DC Voltage Range200 mV to 1000 V
DC Voltage Accuracy±(0.0035% of reading + 0.0005% of range)
AC Voltage Range200 mV to 750 V
AC Voltage Accuracy0.06%
DC Current Range200 µA to 10 A
DC Current Accuracy0.05%
AC Current Range200 μA ~ 10 A
Resistance Range200 Ω ~ 100 MΩ
Resistance Accuracy0.01%
Capacitance Accuracy1%
Frequency Accuracy0.01%
Temperature Range-200°C
ConnectivityUSB, LAN, GPIB

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