Keysight DAQ973A - Page 69

Performance Verification 3
Keysight DAQ970A/DAQ973A Service Guide 69
Short
4-wire ohms
100 Ω ±5 mΩ ±6 mΩ ±6 mΩ ±6 mΩ
1 kΩ ±7 mΩ ±7 mΩ ±7 mΩ ±7 mΩ
10 kΩ Q ±50 mΩ ±50 mΩ ±50 mΩ ±50 mΩ
100 kΩ ±500 mΩ ±500 mΩ ±500 mΩ ±500 mΩ
1 MΩ ±5 Ω ±5 Ω ±5 Ω ±5 Ω
10 MΩ ±100 Ω ±100 Ω ±100 Ω ±100 Ω
2-wire
ohms
[c]
100 MΩ
[d]
±1 kΩ ±1 kΩ ±1 kΩ ±1 kΩ
1000 MΩ
[d]
±10 kΩ ±10 kΩ ±10 kΩ ±10 kΩ
[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
Channel 321
Quick
check
[a]
Error from nominal
Function
[b]
Range 24 hours 90 days 1 year 2 years
Open DC current
1 A ±60 μA ±100 μA ±100 μA ±100 μA
100 mA ±4 μA ±5 μA ±5 μA ±5 μA
10 mA ±2 μA ±2 μA ±2 μA ±2 μA
1 mA ±30 nA ±50 nA ±50 nA ±50 nA
100 μA
[c]
Q ±1 nA ±1 nA ±1 nA ±1 nA
10 μA
[c]
±200 pA ±200 pA ±200 pA ±200 pA
1 μA
[c]
±50 pA ±50 pA ±50 pA ±50 pA
[a] Q: Quick performance verification test points.
[b] For Channel 321, select NPLC 10.
[c] These ranges are typical performances and are calibrated internally.
Input
Channel 303
Quick
check
[a]
Error from nominal
Function
[b]
Range 24 hours 90 days 1 year 2 years
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