Vsense (Non-Contact Voltage) Calibration - Keysight U1242C Service Manual

Table 1-15 Adjustment input values (continued)
Test function
DC A
AC A
[a] The sensor for the Vsense (non-contact voltage) calibration is located at the top center of the 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.

Vsense (non-contact voltage) calibration

– Keep the multimeter away from fluorescent lights, dimmable lights, motors,
NOTE
– It may be necessary in
1 Turn the rotary switch to the
2 Connect a dual open type banana plug into the output voltage terminals of the
3 Ensure the "EARTH" button of the calibrator is turned ON.
4 Ensure the top of the multimeter is vertically and horizontally centered to
5 Set the source output to 10 V/55 Hz.
6 Press
Keysight U1241C/U1242C Service Guide
Step
Open
10.000 A
10.000 A
and other electrical noise sources when running the tests. These electrical
noise sources can invalidate the calibration.
of the multimeter for maximum signal strength.
calibrator.
contact the banana plug's Hi terminal.
Log
to start the calibration. If the calibration is successful,
Hold
will be displayed.
Reference value
oPEn
10.000 A
1.000 A (55 Hz)
10.000 A (55 Hz)
step 4 and step 8
position with
V
Calibration Procedures
Valid reference input
Open terminals
0.7 to 1.3 x Reference value
0.7 to 1.3 x Reference value
0.7 to 1.3 x Reference value
below to slightly adjust the position
shown on the display.
1
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