1
Calibration Procedures
50
Keysight U1281A/U1282A Service Guide
AC
μ
A/mA
60.00
μ
A
30.00
μ
A (55 Hz)
Reference value
60.00
μ
A (55 Hz)
0.9 to 1.1 x Reference value
600.00
μ
A
30.00
μ
A (55 Hz)
Reference value
300.00
μ
A (55 Hz)
0.9 to 1.1 x Reference value
6.00 mA
0.30 mA (55 Hz)
Reference value
3.00 mA (55 Hz)
0.9 to 1.1 x Reference value
60.00 mA
3.00 mA (55 Hz)
Reference value
30.00 mA (55 Hz)
0.9 to 1.1 x Reference value
600.00 mA
30.00 mA (55 Hz)
Reference value
300.00 mA (55 Hz)
0.9 to 1.1 x Reference value
DC A
Open
oPEn
Open terminals
6.00 A
3.00 A
0.8 to 1.2 x Reference value
20.00 A
10.00 A
0.8 to 1.2 x Reference value
AC A
6.00 A
0.30 A (55 Hz)
Reference value
3.00 A (55 Hz)
0.8 to 1.2 x Reference value
20.00 A
3.00 A (55 Hz)
Reference value
10.00 A (55 Hz)
0.8 to 1.2 x Reference value
[a] The sensor for the Vsense (non-contact voltage) calibration is located on the top center of multimeter. Place the top area as close as possible
to the standard signal source without any loads.
[b] — 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.
Table 1-19
Adjustment input values (continued)
Test function
Step
Reference value
Valid reference input
Содержание U1281A
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