Keysight Technologies DAQ970A Service Manual page 69

Input
Function
4-wire ohms
Short
2-wire
ohms
[a] Q: Quick performance verification test points.
[b] For Channel 303, select NPLC 10.
[c] For 2-wire ohms, use Math NULL, otherwise an additional 2 Ω error must be added.
[d] The 100 MΩ and 1000 MΩ ranges are for 2-wire ohms only.
Input
Function
Open DC current
[a] Q: Quick performance verification test points.
[b] For Channel 321, select NPLC 10.
[c] These ranges are typical performances and are calibrated internally.
Keysight DAQ970A/DAQ973A Service Guide
Channel 303
[b]
Range
100 Ω
1 kΩ
10 kΩ
100 kΩ
1 MΩ
10 MΩ
[d]
100 MΩ
[c]
[d]
1000 MΩ
Channel 321
[b]
Range
1 A
100 mA
10 mA
1 mA
[c]
100 μA
[c]
10 μA
[c]
1 μA
Quick
[a]
check
24 hours
±5 mΩ
±7 mΩ
Q ±50 mΩ
±500 mΩ
±5 Ω
±100 Ω
±1 kΩ
±10 kΩ
Quick
[a]
check
24 hours
±60 μA
±4 μA
±2 μA
±30 nA
Q ±1 nA
±200 pA
±50 pA
Performance Verification
Error from nominal
90 days 1 year
±6 mΩ ±6 mΩ
±7 mΩ ±7 mΩ
±50 mΩ ±50 mΩ
±500 mΩ ±500 mΩ
±5 Ω ±5 Ω
±100 Ω ±100 Ω
±1 kΩ ±1 kΩ
±10 kΩ ±10 kΩ
Error from nominal
90 days 1 year
±100 μA ±100 μA
±5 μA ±5 μA
±2 μA ±2 μA
±50 nA ±50 nA
±1 nA ±1 nA
±200 pA ±200 pA
±50 pA ±50 pA
3
2 years
±6 mΩ
±7 mΩ
±50 mΩ
±500 mΩ
±5 Ω
±100 Ω
±1 kΩ
±10 kΩ
2 years
±100 μA
±5 μA
±2 μA
±50 nA
±1 nA
±200 pA
±50 pA
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