Fluke 990DSL, Руководство пользователя

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Setting Up and Operating the CopperPro
Performing Basic Operations
3
3-21
Turning the Backlight On and Off
When you use the tester in low light conditions, you can turn on the backlight
for better viewing.
To turn the backlight on and off, press
<
. This key is located halfway down
the keypad on the left side of the front panel (see Figure 2-1).
To display the screen in reverse video so that it is easier to view in low-light
conditions, press
>
then
<
. To return to normal video, press
>
then
<
again.
Adjusting the Contrast of the LCD
To adjust the contrast of the LCD, complete the following
1. Press
>
.
Note
This is the yellow Shift key, which is located in the lower right corner of
the keypad (see Figure 2-1). In the lower left corner of the screen, the
word “Shift” appears to indicate that the tester is in Shift mode.
2. Press
I
to decrease the contrast or
G
to increase the contrast.
3. After the level of contrast is acceptable to you, press
>
again to save the
setting.