GDM-906X Series – 6½ Digit Dual-Measurement Digital Multimeter
The GDM-906X Series, developed by GW Instek, includes two high-performance models: GDM-9061 and GDM-9060. These precision digital multimeters deliver outstanding measurement accuracy, high sampling rates, and versatile functionality, making them ideal for laboratory use, product development, production testing, and automated test systems.
The series features 12 measurement functions, 6 mathematical functions, and multiple communication interfaces, ensuring fast, accurate, and comprehensive measurement capabilities for demanding engineering applications.
A 4.3-inch TFT graphical display combined with advanced visualization tools such as bar meter, trend chart, and histogram allows users to monitor the entire measurement process clearly and efficiently. The internal memory capacity (100k readings for GDM-9061 and 10k readings for GDM-9060) supports data logging, statistical analysis, and graphical trend monitoring.
The instrument also integrates user-friendly features such as numeric soft keys, multi-language support, and flexible interface configuration, reducing setup time and simplifying operation.
Key Capabilities
A. Ideal Benchtop Measurement Partner
The GDM-906X Series provides all essential measurement functions required for electronic circuit design, development, and testing, including:
- DC Voltage / AC Voltage
- DC Current / AC Current
- 2-wire and 4-wire Resistance
- Frequency and Period
- Diode Test
- Continuity Test (beeper)
- Temperature Measurement
- Capacitance Measurement
Additional features include:
- Mathematical functions: dB, dBm, Compare, MX+B, 1/X, Percent
- Statistical analysis: Min, Max, Average, Peak-to-Peak, Standard Deviation
- Multiple communication interfaces
These capabilities allow the instrument to be used either as a standalone benchtop device or as part of an automated test system (ATS).
B. Advanced Display Modes
Beyond the traditional numeric display, the multimeter offers several graphical visualization modes:
- Bar meter
- Trend chart
- Histogram
These features provide instant visual insight into measurement behavior, making it easier to analyze signal stability, variation, and trends.
C. Dual Measurement & Dual Trend Display
A unique feature of GW Instek digital multimeters is the dual measurement function, which allows two measurement parameters to be captured and displayed simultaneously.
This capability significantly improves testing efficiency, especially for multi-parameter measurement tasks.
D. High Resolution & Fast Sampling Rate
The GDM-906X series offers exceptional measurement resolution:
- 0.1 µV voltage resolution
- 100 pA current resolution
- 100 µΩ resistance resolution
Sampling performance:
- GDM-9061: up to 10'000 readings/sec (4½-digit resolution)
- GDM-9060: up to 1'000 readings/sec (5½-digit resolution)
These fast acquisition speeds ensure reliable measurements even in rapidly changing signals.
E. Temperature Measurement Capability
The series supports temperature measurement using multiple sensor types:
- Thermistors
- RTDs
- Thermocouples
Common thermocouple types such as J, T, and K are supported. Temperature values are calculated from voltage variations measured at the input terminals.
When combined with internal memory and trend chart functions, the instrument can also operate as a temperature data recorder.
F. Multiple Communication Interfaces
For system integration and automated measurement applications, the GDM-906X series provides:
Standard interfaces
- USB Device / Host
- RS-232C
- LAN
- Digital I/O
Optional interface
Data transfer rates reach up to:
- 10k readings/sec (GDM-9061)
- 1k readings/sec (GDM-9060)
via USB, LAN, or GPIB connections.
G. PC Software Support
The DMM-Viewer2 software allows users to monitor, record, and analyze measurement data through any communication interface supported by the instrument.
Two main operating modes are available:
Observation Mode
- Displays real-time trend plots or histograms
- Data is not stored
Recording Mode
- Stores measurement data in log files
- Data and trend charts can be reviewed after recording
The series also includes LabVIEW drivers, simplifying integration into automated test environments.
Included Accessories
- Safety Instructions
- Power Cord
- USB Cable GTL-246
- Test Lead GTL-217
Optional Interface
- GDM-90G1 GPIB Card
(User-installable option)
Optional Accessories
- GTL-205A Temperature Probe Adapter with K-type thermocouple (~1000 mm)
- GTL-234 RS-232C Cable (~2000 mm)
- GTL-248 GPIB Cable (~2000 mm)
- GTL-308 4-Wire Shielded Test Lead (~1500 mm)
Rack Mount Kits
- GRA-422 – 19" Rack Mount Kit (2U)
- GRA-454 – 19" Rack Mount Kit for one or two units
Additional Accessories
- GDM-TL1 Test Lead Set for Digital Multimeters
- GSC-014 Soft Carrying Case for DMM Accessories
