Calibration Procedures
1
Keysight U1241C/U1242C Service Guide
29
Table 1-6
DC current (
μ
A.mA) performance verification tests
Test function
Range
5520A/5522A
output
Error from nominal 1 year
U1241C
U1242C
DC current (
μ
A.mA)
Turn the rotary switch to the
position.
1000
μ
A
1000
μ
A
±1.2
μ
A
±1.2
μ
A
10 mA
10 mA
±0.012 mA
±0.012 mA
100 mA
100 mA
±0.22 mA
±0.22 mA
440 mA
[a]
440 mA
±1.1 mA
±1.1 mA
10 A
[b]
10 A
±0.035 A
±0.035 A
[a] 440 mA continuous, and the signal greater than 440 mA ~ 600 mA for 20 hours maximum. After measuring current of >440 mA, cool down the
multimeter for the same measuring time you applied before performing low current measurement.
[b] 10 A continuous, and the signal greater than 10 A ~ 19.999 A for 30 seconds maximum. After measuring current of >10 A, cool down the
multimeter for the same measuring time you applied before performing low current measurement.
mA
CAUTION
Connect the calibrator outputs to the multimeter’s A and COM terminals
before applying 10 A.