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Controlling the backlight
The V3500A LCD display and keypads are backlit to allow visibility in dark
environments. Press BACKLIGHT to turn on and off the backlight LCD display and
keypads. The backlight will automatically be turned off after a certain length of
time to preserve the battery life. The default time is one minute.
Setting the backlight auto-shutoff interval
The instrument returns to the default "BacklightOff" menu setting of <1m> when
NOTE
the instrument is turned off.
1 Press MENU to enter menu mode.
2 Scroll using the down menu arrow keypad until "BacklightOff" menu is
3 Use the left or right arrow menu keypad to select your desired time interval.
Using relative offset function
The relative offset function allows you to apply an offset value to the
measurement. The relative offset values range from –99.99 dB to +99.99 dB with
0.01 dB resolution. When the relative offset function is turned on, the displayed
power is limited to ±99.99 dBm and 999.99 W.
Turning on the relative offset function
When "Rel Offset" is enabled, a flashing letter "O" is displayed on the upper
right-hand corner of the V3500A.
1 Press MENU to enter menu mode.
2 Scroll using the down menu arrow until "Rel Offset" menu is displayed.
3 Use the right arrow menu keypad to select the <On> function from the
4 Press MENU to exit.
Keysight V3500A User's Guide
displayed.
Select <Never> to disable the backlight's auto-shutoff.
submenu. Enter a relative offset value using steps shown in
offset
value.
Knowing your Instrument
Entering a relative
2
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