3 Menu Reference
140 E4418B Power Meter User’s Guide
Press this softkey to turn the display backlight permanently On.
•
Press this softkey to set the display backlight to be Off while the power
meter is operating under battery power.
•
Press this softkey to select the Backlight Timed mode. When the power
meter is in this mode and is operating under battery power, the display
backlight turns off 10 minutes after the last key press. To turn the
backlight back on, press any key.
•
Pressing this softkey returns the display to the previous screen.
The softkey menu structured to this key affects the channel setup.
Press this key to access the “Zero/Cal” menu which allows you to zero and
calibrate the power meter. Refer to
“Calibrating the Power Meter” on
page 30 for further information.
•
Press this softkey to adjust channel A for a zero power reading with no
power applied to the power sensor. Refer to
“Zeroing and Calibrating
the Power Meter” on page 29 for further information.
•
Press this softkey to calibrate channel A with the connected power sensor.
The POWER REF output is used as the signal source for calibration and is
automatically switched on during this procedure.
•
Press this softkey to enter a reference calibration factor for channel A. A
value in the range of 1% to 150% can be entered. The default value is
obtained from the sensor calibration table if one is selected, otherwise it is
100%. Use the
, , and keys to change the value. To
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