Dc Current (Μa.ma) Performance Verification Tests - Keysight U1242C Service Manual

Table 1-6 DC current (μA.mA) performance verification tests
Test function
DC current (μA.mA)
Turn the rotary switch to the
[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.
Connect the calibrator outputs to the multimeter's A and COM terminals
CAUTION
before applying 10 A.
Keysight U1241C/U1242C Service Guide
position.
mA
5520A/5522A
Range
output
1000 μA 1000 μA
10 mA 10 mA
100 mA 100 mA
[a]
440 mA
440 mA
[b]
10 A
10 A
Calibration Procedures
Error from nominal 1 year
U1241C
±1.2 μA
±0.012 mA ±0.012 mA
±0.22 mA ±0.22 mA
±1.1 mA
±0.035 A
1
U1242C
±1.2 μA
±1.1 mA
±0.035 A
29