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※ 6 1/2 Digit Display:1,200,000 counts ※ DCV Basic Accuracy:0.0035% ※ Dual Measurements to perform two selected measurements simultaneously ※ Bright Vacuum Fluorescent Display (VFD) ※ 11 Measurement Functions & 10 Math Functions ※ High Resolution: Up to 100pA with DCI and 1nA with ACI Measurements ※ Temperature Measurement (RTD & Thermocouple) from -200°C ~ +1820°C ※ High Transmission Speed: Up to 2,400 readings/sec through the USB ※ Standard Interfaces:USB, RS232C, Digital I/O ※ Optional Interfaces:GPIB or LAN ※ Optional Scanner Card:GDM-SC1 (V ch x16, I ch x2) ※ Free PC software:DMM Viewer , LabVIEW Driver |
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Boost Your Measurement Speed & Efficiency
The GDM-8261
is a high precision 6 ½ digit Digital Multimeter with dual measurement
displays, 11 measurement functions and 10 math functions at high
accuracy (35ppm DC voltage accuracy) to accommodate the most frequently
performed parameter measurements in various application fields today.
The
GDM-8261 adopts a scanner card, which carries 16 V-Channels and 2
I-Channels, to facilitate the measurements of multiple-test points on
either a device or multiple devices all at a press of a button. With
this multi-point measurement capability, the GDM-8261 can be used as a
semi-auto ATE System to increase the throughput of manufacturing test or
as a data logger to perform long term monitoring or characterization of
a DUT. A PC Software, DMM-Viewer, is available with GDM-8261 to support
multi-channel panel setting and data logging of the scanner card.
Besides, a LabVIEW driver is also supported to help user create his/her
own virtual instrument on the PC screen for easy programming. For ATE
system measurements or remote control applications, both USB and RS-232
Interfaces are provided as standard, and either GPIB or LAN can be
selected as optional interface for the GDM-8261.
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A. Ideal for Bench Assignments |
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The
GDM-8261 includes all the basic measurement functions that are required
for engineers to handle design, development and testing jobs for
electronic circuits or products. The basic measurement functions include
voltage, current, resistance, diode, continuity, frequency and
temperature. Remarkably, the current measurement function covers a very
wide range from 100uA to 10A for DC current (in 6 ranges) and from 1mA
to 10A for AC current (in 5 ranges). In addition, the GDM-8261 features
10 Math functions (dBm, dB, compare and other mathematical operations)
to accommodate specific measurement requirements and complex measurement
applications.
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B. Dual Measurements with Dual Displays |
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Unlike
most of the “dual display” digital multimeters, which show test result
on the primary display and range information on the secondary display,
the GDM-8261 is able to perform two measurement functions simultaneously
and shows the test results on primary display and secondary display
respectively. The GDM-8261 supports an almost unlimited number of
measurement combinations of dual measurement functions, besides the
normal test result and range information displays, greatly increases the
test speed of multi-function measurement tasks. |
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C. High Measurement Resolution & High Sampling Rate |
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The
GDM-8261 offers an exceptionally high resolution of 0.1μV for voltage
measurement, 100pA for DC current measurement, 1nA for AC current
measurement, and 100μΩ for Resistance measurement. This level of
resolution and accuracy becomes a must for the precision measurements in
specific applications. In addition, the GDM-8261 is capable of
acquiring 30 measurement readings/s at the display resolution of 6 ½
digits and 2,400 readings/s at the display resolution of 4 ½ digits. The
fast acquisition rate of the GDM-8261 adequately meets today’s
measurement demands. |
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D. 2/ 4 Wire Resistance Measurement |
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The
GDM-8261 offers two methods, both 2-wire and 4-wire, for resistance
measurements. The 2-wire measurement is most commonly used for
resistance measurement in the range from 100Ω to 10kΩ. Whereas the
4-wire connection is normally applied for resistance measurement at a
value lower than 100Ω. When applied, 4-wire measurement automatically
compensates the test lead resistance and connector contact resistance to
get an accurate measurement result. |
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E. Stroe/Recall Function |
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The
GDM-8261 is able to acquire and record 2 ~ 9999 measurement readings
for the “store” and “recall” functions. This allows an immediate
observation of the maximum, minimum, average or standard deviation
values of all the recorded data whenever the data acquisition stops. |
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F. Math Measurement |
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The
“Math” function of GDM-8261 includes four mathematical operations for
measurements: MX+B, 1/X, Percentage and Stats. “MX+B” multiplies the
measurement reading (X) by a factor (M) and adds/subtracts an offset
value (B) to calculate linear offsets or scales. The “1/X” function
divides 1 by the measurement reading (X), calculating the inverse of the
reading. The “Percentage” function calculates the ratio of the measured
value to a target value using the following equation: (Reading X –
Reference)/Reference x 100%. The “Stats” function makes statistical
calculations continuously or by a user-defined measurement counts. The
statistical calculations include Maximum, Minimum, Average and Standard
deviation. With these mathematical operations, the GDM-8261 makes
complex measurements quick and easy without the complexity of manual
calculations. |
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G. Temperature Measurement |
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The
GDM-8261 performs temperature measurement accommodating a wide range of
temperature sensors of either thermocouples or RTD (Resistive
Temperature Detectors). For thermocouples, the GDM-8261 uses voltage
measurement terminals as the thermocouple input and calculates the
temperature from the voltage fluctuation. Most of the popular
thermocouple types are supported for temperature measurement on the
GDM-8261. For RTD sensors, the GDM-8261 calculates the voltage
fluctuation arisen from the resistance variation due to temperature
change. Either front panel terminals or scanner card terminals can be
used as the input for temperature sensor. |
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H. Versatile Interfaces & Transmitted Speed |
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For
system applications, the GDM-8261 provides USB interface and RS232
interface as standard. Up to 2,400 readings/s of data can be transferred
over USB in ASCII format. Either GPIB or LAN interface is available as
an option to support the ATE systems currently in use. |
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I. Multipoint Scanner Card Measurement |
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The
optional scanner card, with a field-installable design, is a
self-contained multipoint measurement solution. This approach eliminates
the complexities of software development for multi-point measurement
and data processing. The scanner allows users to effectively measure
multiple channels connected to a single GDM-8261. |
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J. Convenient PC Software |
DMM-Viewer |
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Control & Data Acquisition |
Data Reload & Graph |
Panel Setting & Data Acquisition for All Scanner Channels |
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LabVIEW Driver |
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For
the convenience of remote control and long time data acquisition, a
free software, DMM-Viewer, is supported with the GDM-8261. This software
allows user to remotely control the GDM-8261 without the need to give
commands or to develop programming software. DMM-Viewer’s human
interface resembles the GDM-8261 front panel, which significantly
shortens the user’s learning time. For the data capture through a PC,
the software allows user to continuously observe the measurement results
before saving them into a file. Further more, the saved files can be
loaded and viewed as a graph for data analysis. When GDM-8261 works with
scanner card for multi-point measurements, the DMM-Viewer allows user
to easily select the measurement function and range for each channel and
start acquiring measurement data promptly. The GDM-8261 LabVIEW driver
is also available for free download. With this driver, the user is able
to create a virtue instrument on the PC for the instrument control. With
DMM-Viewer & LabVIEW driver, the GDM-8261 becomes a high value
semi-auto ATE system without further software/hardware investments. |
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Function |
Range(3) |
Resolution |
Input Resistance
etc. |
24 Hour 23°C± 1°C |
90 Day 23°C± 5°C |
1 Year 23°C± 5°C |
Temperature Coefficient 0°~ 18°C /28°~ 55°C |
DC Voltage |
100.0000 mV |
0.1μV |
10MΩ or >10GΩ |
0.0030 + 0.0030 |
0.0040 + 0.0035 |
0.0050 + 0.0035 |
0.0005 + 0.0005 |
1.000000 V |
1μV |
10MΩ or >10GΩ |
0.0015 + 0.0004 |
0.0020 + 0.0005 |
0.0035 + 0.0005 |
0.0005 + 0.0001 |
10.00000 V |
10μV |
11.11MΩ±1% |
0.0020 + 0.0006 |
0.0030 + 0.0007 |
0.0040 + 0.0007 |
0.0005 + 0.0001 |
100.0000 V |
0.1mV |
10.1MΩ±1% |
0.0020 + 0.0006 |
0.0035 + 0.0006 |
0.0045 + 0.0006 |
0.0005 + 0.0001 |
1000.000 V |
1mV |
10.1MΩ±1% |
0.0020 + 0.0006 |
0.0035 + 0.0010 |
0.0045 + 0.0010 |
0.0005 + 0.0001 |
Resistance(4) |
100.0000 Ω |
100μΩ |
1 mA |
0.0030 + 0.0030 |
0.008 + 0.004 |
0.010 + 0.004 |
0.0008 + 0.0005 |
1.000000 kΩ |
1mΩ |
1 mA |
0.0020 + 0.0005 |
0.008 + 0.001 |
0.010 + 0.001 |
0.0008 + 0.0001 |
10.00000 kΩ |
10mΩ |
100μA |
0.0020 + 0.0005 |
0.008 + 0.001 |
0.010 + 0.001 |
0.0008 + 0.0001 |
100.0000 kΩ |
100mΩ |
10μA |
0.0020 + 0.0005 |
0.008 + 0.001 |
0.010 + 0.001 |
0.0008 + 0.0001 |
1.000000 MΩ |
1μΩ |
3.5μA |
0.0020 + 0.0010 |
0.008 + 0.001 |
0.010 + 0.001 |
0.0010 + 0.0002 |
10.00000 MΩ |
10Ω |
350nA |
0.0150 + 0.0010 |
0.020 + 0.001 |
0.040 + 0.001 |
0.0030 + 0.0004 |
100.0000 MΩ |
100Ω |
350 nA//10 MΩ |
0.3000 + 0.0100 |
0.800 + 0.010 |
0.800 + 0.010 |
0.1500 + 0.0002 |
DC Current |
100.0000 μA |
100pA |
< 0.015 V |
0.010 + 0.020 |
0.04 + 0.025 |
0.05 + 0.025 |
0.002 + 0.0030 |
1.000000 mA |
1nA |
< 0.15 V |
0.007 + 0.005 |
0.03 + 0.005 |
0.05 + 0.005 |
0.002 + 0.0005 |
10.00000 mA |
10nA |
< 0.07 V |
0.005 + 0.010 |
0.03 + 0.020 |
0.05 + 0.020 |
0.002 + 0.0020 |
100.0000 m A |
0.1μA |
< 0.7 V |
0.010 + 0.004 |
0.03 + 0.005 |
0.05 + 0.005 |
0.002 + 0.0005 |
1.000000 A |
1μA |
< 0.8 V |
0.050 + 0.006 |
0.08 + 0.010 |
0.10 + 0.010 |
0.005 + 0.0010 |
10.00000 A |
10μA |
< 0.5 V |
0.100 + 0.008 |
0.12 + 0.008 |
0.15 + 0.008 |
0.005 + 0.0008 |
Continuity |
1000.000 Ω |
0.001Ω |
1 mA |
0.002 + 0.030 |
0.008 + 0.030 |
0.010 + 0.030 |
0.001 + 0.002 |
Diode Test |
1.000000 V |
1μV |
1 mA |
0.002 + 0.010 |
0.008 + 0.020 |
0.010 + 0.020 |
0.001 + 0.002 |
True RMS
AC Voltage(6) |
100.0000 mV |
0.1μV |
3Hz - 5Hz |
1.00 + 0.03 |
1.00 + 0.04 |
1.00 + 0.04 |
0.100 + 0.004 |
5Hz - 10Hz |
0.35 + 0.03 |
0.35 + 0.04 |
0.35 + 0.04 |
0.035 + 0.004 |
10Hz - 20kHz |
0.04 + 0.03 |
0.05 + 0.04 |
0.06 + 0.04 |
0.005 + 0.004 |
20kHz - 50kHz |
0.10 + 0.05 |
0.11 + 0.05 |
0.12 + 0.05 |
0.011 + 0.005 |
50kHz - 100kHz |
0.55 + 0.08 |
0.60 + 0.08 |
0.60 + 0.08 |
0.060 + 0.008 |
100kHz -300kHz |
4.00 + 0.50 |
4.00 + 0.50 |
4.00 + 0.50 |
0.200 + 0.020 |
1.000000 V to 750.000 V(5) |
1μV ~ 1mV |
3Hz - 5Hz |
1.00 + 0.02 |
1.00 + 0.03 |
1.00 + 0.03 |
0.100 + 0.003 |
5Hz - 10Hz |
0.35 + 0.02 |
0.35 + 0.03 |
0.35 + 0.03 |
0.035 + 0.003 |
10Hz - 20kHz |
0.04 + 0.02 |
0.05 + 0.03 |
0.06 + 0.03 |
0.005 + 0.003 |
20kHz - 50kHz |
0.10 + 0.04 |
0.11 + 0.05 |
0.12 + 0.05 |
0.011 + 0.005 |
50kHz - 100kHz |
0.55 + 0.08 |
0.60 + 0.08 |
0.60 + 0.08 |
0.060 + 0.008 |
100kHz -300kHz |
4.00 + 0.50 |
4.00 + 0.50 |
4.00 + 0.50 |
0.200 + 0.020 |
True RMS
AC Current(6) |
1.000000 mA |
1nA |
3Hz – 5Hz |
1.00 + 0.04 |
1.00 + 0.04 |
1.00 + 0.04 |
0.100 + 0.006 |
5Hz – 10Hz |
0.30 + 0.04 |
0.30 + 0.04 |
0.30 + 0.04 |
0.035 + 0.006 |
10Hz – 5kHz |
0.10 + 0.04 |
0.10 + 0.04 |
0.10 + 0.04 |
0.015 + 0.006 |
5kHz – 10kHz |
0.20 + 0.25 |
0.20 + 0.25 |
0.20 + 0.25 |
0.030 + 0.006 |
10.00000 mA |
10nA |
3Hz – 5Hz |
1.10 + 0.06 |
1.10 + 0.06 |
1.10 + 0.06 |
0.200 + 0.006 |
5Hz – 10Hz |
0.35 + 0.06 |
0.35 + 0.06 |
0.35 + 0.06 |
0.100 + 0.006 |
10Hz – 5kHz |
0.15 + 0.06 |
0.15 + 0.06 |
0.15 + 0.06 |
0.015 + 0.006 |
5kHz – 10kHz |
0.35 + 0.70 |
0.35 + 0.70 |
0.35 + 0.70 |
0.030 + 0.006 |
100.0000 mA |
100nA |
3Hz – 5Hz |
1.00 + 0.04 |
1.00 + 0.04 |
1.00 + 0.04 |
0.100 + 0.006 |
5Hz – 10Hz |
0.30 + 0.04 |
0.30 + 0.04 |
0.30 + 0.04 |
0.035 + 0.006 |
10Hz – 5kHz |
0.10 + 0.04 |
0.10 + 0.04 |
0.10 + 0.04 |
0.015 + 0.006 |
5kHz – 10kHz |
0.20 + 0.25 |
0.20 + 0.25 |
0.20 + 0.25 |
0.030 + 0.006 |
1.000000 A |
1μA |
3Hz – 5Hz |
1.00 + 0.04 |
1.00 + 0.04 |
1.00 + 0.04 |
0.100 + 0.006 |
5Hz – 10Hz |
0.30 + 0.04 |
0.30 + 0.04 |
0.30 + 0.04 |
0.035 + 0.006 |
10Hz – 5kHz |
0.10 + 0.04 |
0.10 + 0.04 |
0.10 + 0.04 |
0.015 + 0.006 |
5kHz – 10kHz |
0.35 + 0.70 |
0.35 + 0.70 |
0.35 + 0.70 |
0.030 + 0.006 |
10.00000 A |
10μA |
3Hz – 5Hz |
1.10 + 0.06 |
1.10 + 0.06 |
1.10 + 0.06 |
0.100 + 0.006 |
5Hz – 10Hz |
0.35 + 0.06 |
0.35 + 0.06 |
0.35 + 0.06 |
0.035 + 0.006 |
10Hz – 5kHz |
0.15 + 0.06 |
0.15 + 0.06 |
0.15 + 0.06 |
0.015 + 0.006 |
5kHz – 10kHz |
0.35 + 0.70 |
0.35 + 0.70 |
0.35 + 0.70 |
0.030 + 0.006 |
Frequency / Period |
100.0000mV to 750.000V(5) |
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3Hz - 5Hz |
0.1 |
0.1 |
0.1 |
0.005 |
5Hz - 10Hz |
0.05 |
0.05 |
0.05 |
0.005 |
10Hz - 40Hz |
0.03 |
0.03 |
0.03 |
0.001 |
40Hz -300kHz |
0.006 |
0.01 |
0.01 |
0.001 |
Temperature (RTD) |
-200 °C ~ 600 °C |
0.001 °C |
― |
― |
― |
0.06 °C (typical) |
0.005 °C / °C (typical) |
Temperature (Thermocouple) |
-200 °C ~ + 1300 °C |
0.002 °C |
E / J / T / K / N |
― |
― |
0.3 °C (typical) |
0.004 °C / °C (typical) |
-50 °C ~ + 1820 °C |
0.01 °C |
R / S / B |
― |
― |
1 °C |
0.14 °C / °C |
Display |
VFD, Tow Colors Display |
Note : |
Interface |
RS -232C, USB, Digital I/O |
1. All specifications are ensured only under a single display. |
Power Source |
AC 100 V / 120 V / 220 V / 240 V ±10% |
2. Accuracy : ± (% of reading + % of range) |
Power Line Frequency |
45 Hz to 66 Hz and 360 Hz to 440 Hz |
3. 20% overrange on all ranges, except 1000Vdc, 750Vac and 10A. |
Power Consumption |
Max. 25VA |
4. Resistance is for 4-wire ohms function, or 2-wire ohms with REL on. |
Dimensions |
265(W) x 107(H) x 350(D) mm |
5. 750Vac range limited to 100kHz |
Weight |
Approx. 3.1kg without option |
6. AC Characteristics are for sinewave input > 5% of range. |
Quick start guide x1, Power cord x1, Test lead GTL-117 x1, USB Cable GTL-247
CD x1 (including complete user manual, upgrade program and PC software DMM Viewer)
Calibration key GDM-01 x1 (for Firmware upgrade)
OPTION
Opt.01 GDM-SC1 Scanner Card (V x 16ch, I x 2ch)
Opt.02 GPIB Card
Opt.03 LAN Card
(*) Only GPIB or LAN can be installed at the same time
OPTIONAL ACCESSORIES
GTL-108A 4W Type test lead
GTL-232 RS-232C Cable, 9-pin Female to 9-pin, null Modem for Computer, Approx. 2m
GTL-248 GPIB Cable, Approx. 2m
GDM-8261 6 1/2 Digit (1,200,000 Counts) Dual Measurement Multimeter
(*) Three year warranty, excluding accessories
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