GW Instek GDM-8261 - Page 185

APPENDIX
185
Measuring Characteristics
DC Voltage Input
Resistance Range
0.1V
10MΩ or >10GΩ
Selectable
1V
10MΩ or >10GΩ
Selectable
10V
11.11MΩ ±1%
100V
10.1MΩ±1%
1000V
10.1MΩ±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 100Ω, 1 kΩ ranges. 1 kΩ
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
100Ω for 100uA, 1mA. 5Ω for 10mA and 100
mA. 0.1Ω for 1A. 0.01Ω for 10A.
Input Protection
Externally accessible 1.25A, 250 V fuse; Internal
12A, 600 V fuse
Reading Rate
(Readings/sec)
Continuity/
Diode Rate Digits Rate
Slow 6 ½ 100
Mid 5 ½ 200
Fast 4 ¼ 300
DCV, DCI,
Resistance Rate Digits Accurate Quick
Slow 6 ½
5 30
Mid 5 ½
60 600
Fast 4 ¼
240 2400
[ 1 ] Accurate Speed setting.
[ 2 ] Relative to calibration standards.
[ 3 ] 20% overrange on all ranges, except 1000 Vdc, 10A range and
Continuity and Hold.
[ 4 ] Specifications are for 4-wire ohms function, or 2-wire ohms using REL
function. Without REL function, add 0.2  additional error in 2-wire ohms
function.
[ 5 ] Accuracy specifications are for the voltage measured at the input
terminals only. 1 mA test current is typical. Variation in the current source
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