1
Calibration Procedures
22
Keysight U1241C/U1242C Service Guide
Input warning test (A terminal)
This test determines if the input warning of the current terminal test is
functioning properly. The multimeter emits a continuous beep and the red LED
indicator lights up when the test lead is inserted into the input terminal but the
rotary switch is not set to the corresponding position. The secondary display
will show
until the test lead is removed from the input terminal or until
the rotary switch is set to the position.
Figure 1-2
Example of A-Er for wrong terminal input
2
1
Vsense
1
U1242C
True RMS Multimeter
mA
A
COM
V
A
V
V
mA
Z
LOW
Hz
Range
Shift
Hold
Esc
Vsense
MaxMin
Auto
Log
View
2
600V
CAT III 1000V
CAT IV
MAX
FUSED
10A MAX FUSED
440mA
NOTE
Before conducting this test, make sure the beep alert function is enabled in the
Setup mode.