GDM-8261A Datasheet
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GDM-8261A
6 7 Digit Dual Measurement Multimeter
FEATURES
* 6 1/2 Digit Display : 1,200,000 Counts
* DCV Basic Accuracy : 0.0035%
e Dual Measurements to Perform Two Selected Measurements Simultaneously
e Bright Vacuum Fluorescent Display (VFD)
* 11 Measurement Functions & 10 Math Functions
e High Resolution : Up to T00pA Resolution with DCI and 1nA with ACI Measurements
* Temperature Measurement (RTD & Thermocouple) From -200°C — +1820°C
High Data Transmission Speed : Up to 2,400 readings/s Through USB Interface
* Standard Interfaces : USB, RS-232C, Digital 1/0
* Optional Interfaces : GPIB or LAN
* Optional Scanner Card : сом! (V ch x 16,1 ch x 2) GW INSTEK
* Free PC Software : DMM-Viewer, LabVIEW Driver
Simply Reliable
Boost Your Measurement Speed & Efficiency
The GDM-8261A is a high precision 6 % 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-8261A 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-8261A 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-8261A 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-232C Interfaces are
provided as standard, and either GPIB or LAN can be selected as optional interface for the GDM-8261A.
A. IDEAL FOR BENCH ASSIGNMENTS
The GDM-8261A 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
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@ (=) (ev) (a): (oa) (теме measurement functions include voltage, current, resistance, diode,
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w continuity, frequency and temperature. Remarkably, the current
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for DC current (in 6 ranges) and from 1mA to 10A for AC current
(in 5 ranges). In addition, the GDM-8261A features 10 Math functions
(dBm, dB, compare and other mathematical operations) to
accommodate specific measurement requirements and complex
measurement applications.
B. DUAL MEASUREMENTS WITH DUAL DISPLAYS
1st Display 2nd Display
GWINSTEK com-sesia 6/2 Digit Dual Measurement Multime ACV DCV ACI DCI Hz/P 2W/4W:
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Unlike most of the “dual display” digital multimeters, which show The GDM-8261A supports an almost unlimited number of
test result on the primary display and range information on the measurement combinations of dual measurement functions,
secondary display, the GDM-8261A is able to perform two besides the normal test result and range information displays,
measurement functions simultaneously and shows the test results greatly increases the test speed of multi-function measurement
on primary display and secondary display respectively. tasks.
C. HIGH MEASUREMENT RESOLUTION & HIGH SAMPLING RATE
The GDM-8261A offers an exceptionally high resolution of 0.1 u V
: for voltage measurement, 100pA for DC current measurement, 1nA
Mode Resolution E for AC current measurement, and 100 u Q for Resistance
Measurement Speed
Ви measurement. This level of resolution and accuracy becomes a must
Fast 4. digits 2,400 readings /second for the precision measurements in specific applications. In addition,
Medium 5% digits 600 readings/second the GDM-8261A is capable of acquiring 30 measurement readings/s
Slow 6% digits mr — at the display resolution of 4 7 digits and 2,400 readings/s at the
display resolution of 6 % digits. The fast acquisition rate of the
GDM-8261A adequately meets today's measurement demands.
D. | 2/4 WIRE RESISTANCE MEASUREMENT
2W connection 4W connection
W4W INPUT
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The GDM-8261A 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 100 to 10kQ.
Whereas the 4-wire connection is normally applied for resistance
measurement at a value lower than 100Q2. When applied, 4-wire
measurement automatically compensates the test lead resistance and
connector contact resistance to get an accurate measurement result.
MATH MEASUREMENT
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The “Math” function of GDM-8261A 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
TEMPERATURE MEASUREMENT
STORE / RECALL FUNCTION
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The GDM-8261A 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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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-8261A makes complex
measurements quick and easy without the complexity of manual
calculations.
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The GDM-8261A performs temperature measurement accommodating
a wide range of temperature sensors of either thermocouples or RTD
(Resistive Temperature Detectors). For thermocouples, the GDM-8261A
uses voltage measurement terminals as the thermocouple input and
calculates the temperature from the voltage fluctuation. Most of the
Cold junction
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Extension
wires
popular thermocouple types are supported for temperature
measurement on the GDM-8261A. For RTD sensors, the GDM-8261A
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.
H. VERSATILE INTERFACES WITH FAST TRANSMISSION SPEED |. MULTIPOINT SCANNER CARD MEASUREMENT
For system applications, the GDM-8261A provides USB interface The optional scanner card, with a field-installable design, is a
and RS-232C interface as standard. Up to 2,400 readings/s of data self-contained multipoint measurement solution. This approach
can be transferred over USB in ASCII format. Either GPIB or LAN eliminates the complexities of software development for multi-
interface is available as an option to support the ATE systems point measurement and data processing. The scanner card allows
currently in use. users to effectively measure multiple channels connected to a
single GDM-8261A.
J. CONVENIENT PC SOFTWARE
DMM-Viewer
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Control & Data Acquisition Data Reload & Graph Panel Setting & Data Acquisition
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LabVIEW Driver
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For the convenience of remote control and long time data acquisition, When GDM-8261A works with scanner card for multi-point
a free software, DMM-Viewer, is supported with the GDM-8261A. This measurements, the DMM-Viewer allows user to easily select the
software allows user to remotely control the GDM-8261A without the measurement function and range for each channel and start
need to give commands or to develop programming software. DMM- acquiring measurement data promptly. The GDM-8261A LabVIEW
Viewer's human interface resembles the GDM-8261A front panel, which driver is also available for free download. With this driver, the user
significantly shortens the user's learning time. For the data capture is able to create a virtue instrument on the PC for the instrument
through a PC, the software allows user to continuously observe the control. With DMM-Viewer 8 LabVIEW driver, the GDM-8261A
measurement results before saving them into a file. Further more, becomes a high value semi-auto ATE system without further
the saved files can be loaded and viewed as a graph for data analysis. software/hardware investments.
PANEL INTRODUCTION
. The 11 measurement functions can C € | | | Ta | Digital | pc Étabview
be selected at a button press; making | 1 1 | | | vo | software | Driver
operations easy and intuitive.
. Dual VFD displays show the results
of two different measurement
functions simultaneously
. Both 2-Wire and 4-Wire resistance
measurements are supported. The
low current measurement and high
current measurement are made
through different inputs
. Two low DC current ranges (100 LA |
and 1mA) are available for high | M srrExT | scan
resolution measurements down to | Lau
100pA detail
. A number of built-in math functions
are included : MX+B, 1/X, % and
statistics (max/min/average/
standard deviation)
. Either GPIB or LAN communication
is supported as optional
. Flexible-sized screw terminals on
scanner card to support a wide
range of wire gauges for flexible
compatibility
. The Digital 1/O port sends out a signal
of compare measurement result for
external devices control. Additionally,
the Digital 1/O port can also be used as
a power source for TTL & COMS logic.
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. USB and RS-232C communication
ports facilitate the high speed
communication
Accuracy : + ( % of reading + % of range )for 1-hour warm-up at 6 % digits, slow mode
DC SPECIFICATIONS
FUNCTION Range (*1) | Resolution | Test Current 24 Hours 90 Days 1 Year Temperature Coefficient
or etc. 23°C + 1°C 23°C + 5°C 23°C + 5°C 0°~18°C /28°~55°C
DC VOLTAGE 100.0000 m V 0.14V 10MQ or >10G0 | 0.0030 + 0.0030 | 0.0040 + 0.0035 | 0.0050 + 0.0035 | 0.0005 + 0.0005
1.000000 V Тру 10MQ or >10GQ | 0.0015 + 0.0004 | 0.0020 + 0.0005 | 0.0035 + 0.0005 | 0.0005 + 0.0001
10.00000 V 104 V 11.11MO+1% 0.0020 + 0.0006 | 0.0030 + 0.0007 | 0.0048 + 0.0007 | 0.0005 + 0.0001
100.0000 V 0.1mV 10.1MO+1% 0.0020 + 0.0006 | 0.0035 + 0.0006 | 0.0081 + 0.0006 | 0.0005 + 0.0001
1000.000 V 1mV 10.1 МО+1% 0.0025 + 0.0006 | 0.0044 + 0.0010 | 0.0090 + 0.0010 | 0.0005 + 0.0001
RESISTANCE (*2) 100.0000 Q 10040 1mA 0.030 + 0.030 0.008 + 0.004 0.010 + 0.004 0.0008 + 0.0005
1.000000 kQ 1mQ 1 mA 0.020 + 0.005 0.008 + 0.001 0.010 + 0.001 0.0008 + 0.0001
10.00000 kQ 10mQ 100 A 0.020 + 0.005 0.008 + 0.001 0.010 + 0.001 0.0008 + 0.0001
100.0000 kQ) 100mQ 101A 0.020 + 0.0051 0.008 + 0.001 0.010 + 0.001 0.0008 + 0.0001
1.000000 МО 10 3.54A 0.020+0.0010 | 0.008 + 0.001 0.010+0.001 0.0010 + 0.0002
10.00000 МО 100 350 nA 0.0150 + 0.0010 | 0.020 + 0.001 0.040 + 0.001 0.0030 + 0.0004
100.0000 MQ 1000 350 пА//10 МО | 0.3000 + 0.0100 | 0.800 + 0.010 0.800 + 0.010 0.1500 + 0.0002
DC CURRENT 100.0000 pA 100pA <0.015V 0.010 + 0.020 0.04 + 0.025 0.05 + 0.025 0.002 + 0.0030
1.000000 mA TnA <0.15V 0.007 + 0.005 0.03 + 0.005 0.05 + 0.005 0.002 + 0.0005
10.00000 mA TOnA < 0.07 у 0.005 + 0.010 0.03 + 0.020 0.05 + 0.020 0.002 + 0.0020
100.0000 mA 0.1 «A <0.7V 0.010 + 0.004 0.03 + 0.005 0.05 + 0.005 0.002 + 0.0005
1.000000 A TuA <0.8V 0.050 + 0.006 0.08 + 0.010 0.10 + 0.010 0.005 + 0.0010
10.00000 A 102A <0.5V 0.100 + 0.008 0.12 + 0.008 0.15 + 0.008 0.005 + 0.0008
CONTINUITY 1000.000 0.0010 1mA 0.002 + 0.030 0.008 + 0.030 0.010 + 0.030 0.001 + 0.002
DIODE TEST (*3) 1.000000 V Ти У 1 mA (*4) 0.002 + 0.010 0.008 + 0.020 0.010 + 0.020 0.001 + 0.002
Note : (*1) 20% overrange on all ranges, except 1000 Vdc/750Vac, 10A range and Continuity. *5) Specifications are for sinewave input >5% of range.
*2) Specifications are for 4-wire ohms function, or 2-wire ohms using REL function. *6) 750 Vac range limited to 100 kHz
— m2 ос
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( (*6)
(*3) Accuracy specifications are for the voltage measured at the input terminals only. (*7) Typically 30% of reading error at 1 MHz.
(*4) Variation in the current source will create some variation in the voltage drop (8) Input > 100 mV. For 10 mV to 100 mV inputs, multiply % of reading error x10.
(*9)
across a diode junction. *9) Specifications do not include probe accuracy and relative to simulated junction
AC SPECIFICATIONS
FUNCTION Range (*1) Resolution Frequency 24 Hours 90 Days 1 Year Temperature Coefficient
or etc. 23°C + 1°C 23°C + 5°C 23°C + 5°C 0°~18°C /28°~55°C
TRUE RMS 100.0000mV 0.14V 3Hz~5Hz 1.00 + 0.03 1.00 + 0.04 1.00 + 0.04 0.100 + 0.004
AC VOLTAGE (5) 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
100 kHz-300kHz(*7) | 4.00+0.50 4.00 + 0.50 4.00 + 0.50 0.200 + 0.020
1.000000V~ 10 V~ 3Hz~5Hz 1.00 + 0.02 1.00 + 0.03 1.00 + 0.03 0.100 + 0.003
750.000 V (6) 1mV 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(*7) | 4.00 + 0.50 4.00 + 0.50 4.00 + 0.50 0.200 + 0.020
TRUE RMS 1.000000 mA 1nA 3Hz~5Hz 1.00+0.04 1.00+0.04 1.0+0.04 0.100 + 0.006
AC CURRENT (*5) 5Hz-10Hz 0.30+0.04 0.30+0.04 0.3+0.04 0.035 + 0.006
10Hz-5kHz 0.10+0.04 0.10+0.04 0.1+0.04 0.015 + 0.006
5kHz-10kHz 0.20+0.25 0.20+0.25 0.2+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 TPA 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 T0pA 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 (*8) 100.0000 mV~ 3 Hz-5 Hz 0.1 0.1 0.1 0.005
PERIOD 750.000 V (*6) _ 5Hz~10 Hz 0.05 0.05 0.05 0.005
10 Hz~40 Hz 0.03 0.03 0.03 0.001
40 Hz-300 kHz 0.006 0.01 0.01 0.001
TEMPERATURE(RTD)(*9)| -200 'C~600 °C 0.002°C — — — 0.06 C (typical) —
TEMPERATURE -200-+1372°C| 0.003€ | (J/K/N/T/E Type) _ _ 0.2°C (typical) 0.004 °C / °C (typical)
(THERMOCOUPLES) (+9) -50 ~ +1870 °C 0.01°C (R/S/B Type) 1.0°C 0.14°C/°C
DISPLAY VED, Two Colors Display
INTERFACE RS-232C, USB, Digital 1/0
POWER SOURCE AC 100V/120V/220V/240V+10%, 45 Hz — 66 Hz and 360 Hz — 440 Hz
DIMENSIONS & WEIGHT | 265(W) x 107(H) x 350(D) mm, Approx. 3.1 kg
Specifications subject to change without notice. DM-8261AGDIBH
ORDERING INFORMATION
GDM-8261A 6% Digit Dual Measurement Multimeter
* Three-year warranty, excluding accessories.
ACCESSORIES
Quick star guide x 1, Power cord x 1, Test lead GTL-117 x 1,
USB cable GTL-247 x 1, CD x 1(including complete user manual,
upgrade program and PC software DMM-Viewer), Calibration key
GDM-01 x 1 (for firmware upgrade)
Opt. 01 GDM-SC1 Scanner Card ( V ch x 16, | ch x2)
Opt. 02 GPIB Card
Opt. 03 LAN Card * Either GPIB or LAN can be installed on each GDM-8261.
OPTIONAL ACCESSORIES
GTL-108A 4W Type test lead GTL-248 GPIB Cable, Approx. 2m
GTL-232 RS-232C Cable, 9-pin female to 9-pin, null modem for computer,
Approx. 2m
FREE DOWNLOAD
PC Software DMM-VIEWER, RS-232C/USB Interface Supported
LabVIEW Driver, RS-232C/USB/GPIB Interface Supported
Driver USB Driver
Global Headquarters
GOOD WILL INSTRUMENT CO., LTD.
No.7-1, Jhongsing Road, Tucheng Dist., New Taipei City 236, Taiwan
T +886-2-2268-0389 F +886-2-2268-0639
E-mail: [email protected]
China Subsidiary
GOOD WILL INSTRUMENT (SUZHOU) CO., LTD.
NO. 69, Lushan Road, Snd, Suzhou Jiangsu 215011 China
T +86-512-6661-7177 F +86-512-6661-7277
E-mail: [email protected]
Malaysia Subsidiary
GOOD WILL INSTRUMENT (M) SDN. BHD.
27, Persiaran Mahsuri 1/1, Sunway Tunas,
11900 Bayan Lepas, Penang, Malaysia
T +604-6309988 F +604-6309989
E-mail: [email protected]
U.S.A. Subsidiary
INSTEK AMERICA CORP.
3661 Walnut Avenue Chino, CA 91710, U.S.A.
T +1-909-5918358 F +1-909-5912280
E-mail: [email protected]
Japan Subsidiary
INSTEK JAPAN CORPORATION
4F, Prosper Bldg, 1-3-3 Iwamoto-Cho Chiyoda-Ku,
Tokyo 101-0032 Japan
T +81-3-5823-5656 F +81-3-5823-5655
E-mail: [email protected]
GYINSTEK
Simply Reliable
Korea Subsidiary
GOOD WILL INSTRUMENT KOREA CO., LTD.
Room No.805, Ace Hightech-City B/D 1Dong,
Mullae-Dong 3Ga 55-20, Yeongduengpo-Gu, Seoul, Korea
T +82-2-3439-2205 F +82-2-3439-2207
E-mail : [email protected]
www.gwinstek.com
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