Performance Tests and Calibration 5
Keysight U1241B and U1242B User’s and Service Guide 79
Exiting Adjustment Mode
1 Remove all shorting plugs and connectors from the multimeter.
2 Record the new Calibration Count, see Calibration Count.
3 Press and simultaneously to exit the Adjustment Mode. Power
off and on the multimeter to return to normal measurement mode and
secured.
Move the test lead from “μA.mA” and “COM” terminal to “A” and “COM” terminal
Caution: Connect the calibrator to the multimeter's “A” and “COM” terminal before applying 10 A
10
Turn the rotary switch to
position
Open
Input terminals open
(remove all test leads
and shorting plugs from
input terminals)
oPEn
10 A 10 A 10.000 A
11
Press to go to
A
function
10 A
0.5 A, 70 Hz 0.500 A
1 A, 70 Hz 1.000 A
10 A, 70 Hz 10.000 A
12
Turn the rotary switch to
T1 or T1T2
position
[a]
Short
Dual banana plug with
copper wires short
between two terminals
SHrt
100 mV 100 mV 100.00 mV
13
Press to go to
T1 function
[a]
K-type 0 ºC 000.0 ºC
[a] — 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 5-4 Calibration Adjustments (continued)
Step Test Function Cal Range Input Reference Value Cal Item
U1241B U1242B
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