GDM-8261A User Manual
220
Measuring Characteristics
DC Voltage
Input
Resistance
Range
0.1V
10M
Ω
or >10G
Ω
Selectable
1V
10M
Ω
or >10G
Ω
Selectable
10V
11.11M
Ω
±1%
100V
10.1M
Ω
±1%
1000V
10.1M
Ω
±1%
Input Bias
30pA (Typ, 25°C)
Input Protection
1000V on all ranges
Measurement Method: Sigma-delta A/D Converter
Resistance
Max. Lead
Resistance
10% of range per lead for 100
Ω
, 1 k
Ω
ranges. 1 k
Ω
per lead on all other ranges.
Input Protection
1000 V on all ranges
Measurement Method: Selectable 4-wire or 2-wire ohms. Current source referenced to LO
input
DC Current
Shunt Resistor
100
Ω
for 100uA, 1mA. 5
Ω
for 10mA and 100
mA. 0.1
Ω
for 1A. 0.01
Ω
for 10A.
Input Protection
Externally accessible 1.25A, 250 V fuse; Internal
12A, 600 V fuse
Reading Rate
(Readings/sec)
[8]
Continuity/
Diode
Rate
Digits
Rate
Slow
6 ½
100
Mid
5 ½
200
Fast
4 ¼
300
DCV, DCI,
2W/4W
Resistance
Rate
Digits
Accurate Quick
Slow
6 ½
5
30
Mid
5 ½
60
600
Fast
4 ¼
240
2400
[ 1 ] For DCV/DCI/ 2/4WR measurement modes, to reach specifications
accuracy, must be set in accuracy speed, slow rate, A-Filter off, A-Gain on,
A-Zero on.
[ 2 ] For Diode/CONT/TCO/RTD measurement modes, to reach
specifications accuracy, must be set in slow rate, A-Gain on, A-Zero on.
[ 3 ] Relative to calibration standards.
[ 4 ] 20% overrange on all ranges, except 1000 Vdc and 10A range.
[ 5 ] Specifications are for 4-wire ohms function, or 2-wire ohms using REL
