Keysight U1251B Guia Del Usuario página 176

6 Performance Tests and Calibration
Table 6-4 Adjustment table (continued)
Step Test Function
12 Turn the Rotary Switch to the
Move the test lead from uA.mA and COM terminal to A and COM terminal
Caution: Connect the calibrator to handheld multimeter's A and COM terminals before applying 3A and 10A
Move the test lead from A and COM terminal to uA.mA and COM terminal
13
Press
mA mode
Move the test lead from uA.mA and COM terminal to A and COM terminal
Caution: Connect the calibrator to handheld multimeter's A and COM terminals before applying 3A and 10A
14
Press
A mode
Notes for adjustment table:
[a] Be sure to recalibrate "Short" using the dual banana plug with copper wire after performing calibration for resistance.
[b] Ensure the multimeter is turned on and stabilized for at least 60 minutes, with the K-type thermocouple connected between the multimeter
and the calibrator output terminal.
— Set the 5520A to internal reference.
— Prior to performing adjustment, connect one end of the K-type thermocouple (with miniature TC connector on both ends) to the 5520A
TC output, and the other end to a precision thermometer to verify that the source outputs the desired value. Adjust the source
accordingly if necessary.
— To perform the adjustment, connect one end of the K-type thermocouple (with miniature TC connector on both ends) to the 5520A TC
output, and the other end to the multimeter via a TC-to-banana adapter. Allow at least 1 hour for the multimeter to stabilize.
174
Cal Range
Open
position
50 mA
440 mA
5 A
10 A
50 mA
button to go to
440 mA
5 A
button to go to
10 A
Input
Input terminal open
(remove any test
leads and Short
Plugs from the
input terminal)
30 mA
300 mA
3 A
10 A
3 mA, 1 kHz
30 mA, 1 kHz
30 mA, 1 kHz
300 mA, 1 kHz
0.3 A, 1 kHz
3 A, 1 kHz
3 A, 1 kHz
10 A, 1 kHz
Keysight U1251B and U1252B User's and Service Guide
Cal Item
U1251B U1252B
oPEn oPEn
30.000 mA 30.000 mA
300.00 mA 300.00 mA
3.0000 A 3.0000 A
10.000 A 10.000 A
03.000 mA 03.000 mA
30.000 mA 30.000 mA
030.00 mA 030.00 mA
300.00 mA 300.00 mA
0.3000 A 0.3000 A
3.0000 A 3.0000 A
3.0000 A 3.0000 A
10.000 A 10.000 A