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HP4402.book : chapter3.fm 25 Wed Apr 23 15:29:05 1997
Menu Reference
Front Panel Menu Reference "Zero/Cal" Menu
HP EPM-442A User’s Guide 3-25
The softkey menu structured to this hardkey affects the channel setup.
Press this hardkey to access the “Zero/Cal” menu which allows you to zero
and calibrate the power meter. Refer to “Calibrating the Power Meter”, on
page 2-4 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 the
Power Meter”, on page 2-3 for further information.
•
Press this softkey to adjust channel B’s internal circuitry for a
zero power reading with no power applied to the power sensor.
Refer to “Zeroing the Power Meter”, on page 2-3 for further
information.
•
Press this softkey to adjust both channel A’s and channel B’s
internal circuitry for a zero power reading with no power supplied
to the power sensor. Refer to “Zeroing the Power Meter”, on
page 2-3 for further information.
•
Press this softkey to access a menu which allows you to calibrate
the power meter. Calibration sets the gain of the power meter
using a 50 MHz oscillator as a traceable power reference.
■
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 hardkeys to change the value. To confirm your
choice press . This softkey cannot be selected when you are
using an HP E-series power sensor.
Zero
Cal
Zero A
Zero B
Zero Both
Cal
Cal A
A Ref CF
%