Agilent Technologies U1253B User's And Service Manual page 175

Table 6-2 Performance verification tests
Step Test function
18 Press to select AC mA measurement
Caution: Connect calibrator outputs to handheld multimeters A and COM terminal before applying 5 A and 10 A
19 Press to select DC A measurement
20 Press to select AC A measurement
21 Turn the rotary switch to the
duty cycle
amplitude
[1]
The additional error to be added for frequency > 20 kHz and signal input < 10% of range: 300 counts of LSD per kHz.
[2]
An accuracy of 0.05% + 10 can be achieved by using the relative function to zero the thermal effect (short test leads) before
measuring the signal.
U1253B User's and Service Guide
Range
[1]
50 mA
440 mA
5 A
[10]
10 A
5 A
3 A
[11]
10 A
Square wave
output
position 120 Hz @ 50%
4800 Hz @ 50%
100 Hz @ 50%
100 Hz @ 25%
100 Hz @ 75%
4800 Hz @
99.609%
Performance Tests and Calibration
Reference
signals/values Error limits
50 mA, 1 kHz ± 0.37 mA
50 mA, 20 kHz ± 0.395 mA
400 mA, 45 Hz ± 4.2 mA
400 mA, 1 kHz ± 3 mA
5 A ± 16 mA
10 A ± 35 mA
5 A, 1 kHz ± 37 mA
3 A, 5 kHz ± 96 mA
10 A, 1 kHz ± 90 mA
Measure with
53131A
± 26 mHz
± 260 mHz
± 0.398%
± 0.398%
± 0.398%
Measure with
34410A
± 0.2 V
6
[12]
[12]
[12]
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