User manual

Calibration Procedures 1
Performance Verification Tests
U1271A/U1272A Service Guide 17
16
ACmA While the rotary
switch is in the position,
press the key once.
30 mA 30 mA, 20 Hz N/A ±0.295 mA
30 mA, 45 Hz ±0.295 mA ±0.205 mA
30 mA, 65 Hz ±0.295 mA ±0.205 mA
30 mA, 1 kHz ±0.295 mA ±0.295 mA
300 mA 300 mA, 20 Hz N/A ±2.95 mA
300 mA, 45 Hz ±2.95 mA ±2.05 mA
300 mA, 65 Hz ±2.95 mA ±2.05 mA
300 mA, 1 kHz ±2.95 mA ±2.95 mA
17
DCA
[5]
Turn the rotary switch
to the position.
3 A 3 A ±0.0100 A ±0.0100 A
10 A 10 A ±0.04 A ±0.04 A
[5] CAUTION: Connect the calibrator to the multimeter's A and COM terminals before applying the 3 A and 10 A input.
18
ACA While the rotary switch
is in the position, press the
key once.
3 A 3 A, 45 Hz ±0.0325 A ±0.0325 A
3 A, 65 Hz ±0.0325 A ±0.0325 A
3 A, 1 kHz ±0.0325 A ±0.0325 A
10 A 10 A, 45 Hz ±0.125 A ±0.125 A
10 A, 65 Hz ±0.125 A ±0.125 A
10 A, 1 kHz ±0.125 A ±0.125 A
Table 1 - 2 Functional Test
Step Test function Range 5520 output
Error from nominal 1 year
U1271A U1272A
S
h
i
f
t
V
i
e
w
E
s
c
S
h
i
f
t
V
i
e
w
E
s
c