Calibration Procedures
1
Keysight U1241C/U1242C Service Guide
31
Table 1-8
AC current (A) averaging sense performance verification tests
Test function
Range
5520A/5522A
output
Error from nominal 1 year
U1241C
U1242C
AC current (A) averaging sense
Turn the rotary switch to the
position and press
twice.
1000
μ
A
1000
μ
A, 40 Hz
N/A
±12.5
μ
A
1000
μ
A, 1 kHz
±12.5
μ
A
10 mA
10 mA, 40 Hz
N/A
±0.125 mA
10 mA, 1 kHz
±0.125 mA
100 mA
100 mA, 40 Hz
N/A
±1.25 mA
100 mA, 1 kHz
±1.25 mA
440 mA
[a]
440 mA, 40 Hz
N/A
±5.8 mA
440 mA, 1 kHz
±5.8 mA
10 A
[b]
10 A, 45 Hz
N/A
±0.125 A
10 A, 1 kHz
±0.125 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.
A
Shift
Esc
View
CAUTION
Connect the calibrator outputs to the multimeter’s A and COM terminals
before applying 10 A.
Table 1-9
Diode performance verification test
Test function
Range
5520A/5522A
output
Error from nominal 1 year
U1241C
U1242C
Diode
Turn the rotary switch to the
position.
2 V
2 V
±0.020 V
±0.020 V