Keysight U1281A - Table 1-9 AC Current (A) Performance Verification Tests

1 Calibration Procedures
32 Keysight U1281A/U1282A Service Guide
Table 1-9 AC current (A) performance verification tests
Test function Range
5520A/5522A
output
Error from nominal 1 year
U1281A U1282A
AC current (A)
Turn the rotary switch to the position and press
.
6 A
0.3 A, 20 Hz
[a]
±0.0070 A ±0.0070 A
6 A, 45 Hz ±0.0385 A ±0.0385 A
6 A, 1 kHz ±0.0385 A ±0.0385 A
2.9 A, 5 kHz ±0.0465 A ±0.0465 A
10 A
[b]
1 A, 20 Hz
[a]
±0.050 A ±0.050 A
10 A, 45 Hz ±0.085 A ±0.085 A
10 A, 1 kHz ±0.085 A ±0.085 A
2.9 A, 5 kHz ±0.074 A ±0.074 A
[a] Input current is < 3A rms due to verification source.
[b] Current can be measured from 1 A to 10 A continuously, with an additional buffer of 0.3%. If the measurement of the signal is between
10 A to 20 A, current can be measured for 30 seconds maximum. After measuring > 10 A current, cool down the multimeter for twice the
measuring time taken and use the Null ( ) function to zero the thermal effect before proceeding for low current measurement.
A
Esc
Shift