GDM-8351

Features :

  • 120,000 counts, VFD display
  • Dual measurement/Dual display
  • The basic precision of DC voltage: 0.012%
  • Selectable measurement speeds, the maximum: 320 Readings/s
  • True RMS (AC,AC+DC) measurements
  • Auto/manual selection
  • 12 different measurement functions: AC/DC voltage, AC/DC current, AC+DC voltage/current, 2W/4W resistance, continuity beeper, diode test, capacitance, frequency, temperature
  • Many auxiliary functions: Max./Min., REL/REL#, Compare, Hold, dB, dBm, Math (MX+B, %, 1/X)
  • Digital I/O provides dual mode (standard Compare and User definition modes)
  • Standard RS-232C and USB device interface (support USBCDC and USBTMC modes)

Description

GW Instek presents the brand new 5 1/2 Digit Dual Measurement Multimeter─ GDM-8351 to replace GDM-8251A of the same category. GDM-8351 features VFD dual-display, maximum 120,000 counts, 0.012% basic DC voltage accuracy and USB/RS232C connectors to provide users with measurement precision, lucid data observation, and the convenient connection with the personal computer.

In addition to the fundamental measurement items such as AC/DC voltage, AC/DC current, AC+DC voltage/current, 2W/4W resistance, frequency, temperature measurement, continuity beeper and diode test, GDM-8351 also equips with the capacitance measurement function. Furthermore, the GDM-8351 also provides many auxiliary functions, including maximum/minimum values, dB, dBm, compare, reading hold, algorithms (MX+B, 1/X, %) etc. to meet the measurement requirements for manufacturing process tests, educational experiments and testing facilities.

For the external control, the pin of digital I/O interface not only provides the signal output frequently used by the compare function, but also allows users to define signal output for each pin. Under the self-definition mode, users can apply the I/O as a simple digital hardware. The external control requirement can be achieved by signals from each pin so as to help users reduce trouble of making hardware.

With respect to remote control and retrieving data, GDM-8351, taking consideration of users’ habitual practice and universal system interface, provides standard RS-232C and USB interface to edit control programs and read measurement results. It is worth noting that for utilizing the USB interface, users have options of selecting either USBCDC or USBTMC mode. While USBTMC is selected, users are able to control instrument with the USB interface exactly the same as controlling instrument with the GPIB interface; therefore, the relatively expensive GPIB connection cable is no longer required.

  • Dual measurement/Dual display
  • Selectable measurement speeds
  • Various measurement items and functionalities
  • Convenient Digital I/O function
  • Free software-remote control and data retrieving
  • Command compatibility

 

Specifications

The specifications apply when the GDM-8351 is powered on for at least 30 minutes under +20°C~+30°C.

 

Specification Function(*1)
Range (*2) Resolution Input Resistance
etc.
Accuracy(*3)
1 Year (23°C±5°C)
DC Voltage
100.000 mV 1μV 10MΩ or >10GΩ 0.012 + 8
1.00000 V 10μV 10MΩ or >10GΩ 0.012 + 5
10.0000 V 100μV 11.1MΩ 0.012 + 5
100.000 V 1mV 10.1MΩ 0.012 + 5
1000.00 V 10mV 10MΩ 0.012 + 5
Resistance
100.000 Ω 1mΩ 1mA 0.05 + 8
1.00000 kΩ 10mΩ 1mA 0.05 + 5
10.0000 kΩ 100mΩ 100μA 0.05 + 5
100.000 kΩ 10μA 0.05 + 5
1.00000 MΩ 10Ω 1μA 0.05 + 5
10.0000 MΩ 100Ω 0.5μA 0.30 + 5
100.000 MΩ 1kΩ 0.5μA //10 MΩ 3.00 + 8
DC Current
10.0000 mA 100nA 0.05 + 15
100.000 mA 1μA 0.05 + 5
1.00000 A

 

 

10μA 0.1Ω 0.20 + 5
10.0000 A

 

 

100μA 0.01Ω 0.20 + 5
Continuity
1000.00 Ω 10mΩ 1mA 0.05 + 5
Diode Test
6.0000 V 100μV 1mA@6V 0.05 + 15
Capacitance
10.00 nF 0.01nF 10μA 2.0 + 10
100.0 nF 0.1nF 10μA 2.0 + 4
1.000 μF 0.001μF 100μA 2.0 + 4
10.00 μF 0.01μF 1mA 2.0 + 4
100.0 μF 0.1μF 1mA 2.0 + 4
True RMS AC (or AC+DC – AC Coupled) Voltage
100.000 mV 1μV 20Hz – 45Hz 1.0 + 100
45Hz – 10kHz 0.3 + 100
10kHz – 30kHz 1.5 + 300
30kHz – 100kHz 5.0 + 300
1.00000 V 10μV 20Hz – 45Hz 1.0 + 100
45Hz – 10kHz 0.2 + 100
10kHz – 30kHz 1.0 + 100
30kHz – 100kHz 3.0 + 200
10.0000 V 100μV 20Hz – 45Hz 1.0 + 100
45Hz – 10kHz 0.2 + 100
10kHz – 30kHz 1.0 + 100
30kHz – 100kHz 3.0 + 200
100.000 V 1mV 20Hz – 45Hz 1.0 + 100
45Hz – 10kHz 0.2 + 100
10kHz – 30kHz 1.0 + 100
30kHz – 100kHz 3.0 + 200
750.00 V 10mV 20Hz – 45Hz 1.0 + 100
45Hz – 10kHz 0.2 + 100
10kHz – 30kHz 1.0 + 100
30kHz – 100kHz 3.0 + 200
True RMS AC (or AC+DC – AC Coupled) Current
10.0000 mA 100nA 20Hz – 45Hz 1.5 + 100
45Hz – 2kHz 0.5 + 100
2kHz – 10kHz 2.0 + 200
100.000 mA 1μA 20Hz – 45Hz 1.5 + 100
45Hz – 2kHz 0.5 + 100
2kHz – 10kHz 2.0 + 200
1.00000 A

 

 

10μA 20Hz – 45Hz 1.5 + 100
45Hz – 2kHz 0.5 + 100
2kHz – 10kHz 2.0 + 200
10.0000 A

 

 

100μA 20Hz – 45Hz 1.5 + 100
45Hz – 2kHz 1.0 + 100
2kHz – 10kHz —–
Frequency
(Voltage)10Hz – 1MHz —— —— 0.01 + 3
(Current)20Hz – 10kHz
Temperature (Thermocouple)
-200 °C ~ 0 °C 0.01 °C

 

J / T / K 0.4 °C (typical)
0 °C ~ +300 °C 0.2 °C (typical)
Display
VFD, Tow Colors Display
Interface
RS-232C, USB device (USBCDC & USBTMC)
Power Source
AC 100 V / 120 V / 220 V / 240 V ±10%, 50-60Hz ; Power Consumption Max. 15VA
Dimensions & Weight
265(W) x 107(H) x 302(D) mm ; Approx. 2.9kg

1. All specifications are applicable to the main (1st) display only and warmed up for at least 30 minutes and operated in the slow rate.
2. 20% overrange on all ranges, except 750V/10A range
3. Accuracy: ± (% of Reading + Digits)