Fluke 190-104 - Display and Backlight Test

Performance Verification
4.5 Display and Backlight Test 4
4-5
23. Using select SCREEN+SETUP.
24. Press
ENTER
.
25. Using
select OK SAVE. Remember the name under which the settings are
saved (for instance SCOPE 1).
26. Press
ENTER
to save the settings.
27. Press
HOLD
RUN
to leave the Hold mode.
4.5 Display and Backlight Test
Proceed as follows to test the display and the backlight:
1. Press
to turn the Test Tool on.
2. Remove the BC190 power adapter, and verify that the backlight is dimmed.
3. Apply the BC190 power adapter and verify that the backlight brightness increases.
4. Press and hold
USER
(USER), then press and release
CLEAR
(CLEAR MENU) .
The Test Tool shows the calibration menu in the bottom of the display.
• Do not press
F3
now! If you did, turn the Test Tool off and on, and start at
4.
• Pressing
CLEAR
will toggle the menu on-off.
5. Press
F1
PREVIOUS three times.
The Test Tool shows
Contrast (CL 0100):
6. Press
F3
CALIBRATE .The Test Tool shows a dark display; the test pattern as
shown in Figure 4-2 may be not visible or hardly visible.
Observe the display closely, and verify that the display shows no abnormalities, as
for example very light pixels or lines.
Figure 4-2. Display Test Pattern
7. Press
F2
.
The test pattern is removed; the Test Tool shows
Contrast (CL 0100):
8. Press
F2
again to do the next step Contrast (CL 0110):
9. Press
F3
CALIBRATE
The Test Tool shows the display test pattern shown in Figure 4-2, at default contrast.