Keysight U1281A - Table 1-10 AC Current (Μa.ma) Performance Verification Tests; Table 1-11 Diode Performance Verification Test

Calibration Procedures 1
Keysight U1281A/U1282A Service Guide 33
Table 1-10 AC current (μA.mA) performance verification tests
Test function Range
5520A/5522A
output
Error from nominal 1 year
U1281A U1282A
AC current (μA.mA)
Turn the rotary switch to the position and press
.
600 μA
600 μA, 20 Hz ±6.40 μA ±6.40 μA
600 μA, 45 Hz ±3.85 μA ±3.85 μA
600 μA, 1 kHz ±3.85 μA ±3.85 μA
6 mA
6 mA, 20 Hz ±0.0640 mA ±0.0640 mA
6 mA, 45 Hz ±0.0385 mA ±0.0385 mA
6 mA, 1 kHz ±0.0385 mA ±0.0385 mA
60 mA
60 mA, 20 Hz ±0.640 mA ±0.640 mA
60 mA, 45 Hz ±0.385 mA ±0.385 mA
60 mA, 1 kHz ±0.385 mA ±0.385 mA
600 mA
[a]
440 mA, 20 Hz ±4.80 mA ±4.80 mA
440 mA, 45 Hz ±2.89 mA ±2.89 mA
440 mA, 1 kHz ±2.89 mA ±2.89 mA
[a] Current can be measured from 30 mA to 440 mA continuously, and > 440 mA to 600 mA for 20 hours maximum. DC ranging from 60 mA to
440 mA have a thermal effect of 0.35 µA/mA. Cool down the multimeter for 6 seconds if 100 mA is applied and at least 3 minutes if
600 mA is applied. Alternatively, use the Null ( ) function to zero the thermal effect before proceeding with a low current measurement or
checking the current offset.
Table 1-11 Diode performance verification test
Test function Range
5520A/5522A
output
Error from nominal 1 year
U1281A U1282A
Diode
Turn the rotary switch to the position.
3 V 1 V ±0.006 V ±0.006 V
mA
Esc
Shift
MHz