Basic Operating Test; Backlight Test; Testing The Display - Agilent Technologies U1242A User's Manual And Service Manual

Basic Operating Test

Basic Operating Test is used to test the basic operability of the meter.
Repair is required if the meter fails the Basic Operating Test.

Backlight Test

To test the backlight function, press
ON at medium level of brightness intensity. Press again to toggle the high-
est level of brightness intensity. The backlight turns OFF automatically
after setting period. Alternatively, you can press
to turn the backlight OFF.

Testing the Display

To view all segments of the display, press and hold the
while turning the rotary switch from OFF to any non- OFF position.
Compare the display with the
Figure 5-12 Annunciator display
U1241A/U1242A User's and Service Guide
Performance Tests and Calibration
momentarily to turn backlight
Figure 5- 12.
5
for the third time
button
39