HP4402.book : chapter2.fm 5 Tue Apr 22 15:20:23 1997
Power Meter Operation
Calibrating the Power Meter
HP EPM-441A User’s Guide 2-5
Calibration Procedure Using HP E-Series Power Sensors
The following procedure describes how you calibrate the power meter with
an HP E-series power sensor. Since the power meter automatically
downloads the HP E-series power sensor’s calibration table there is no
requirement to enter the reference calibration factor. The power meter
identifies that an HP E-series power sensor is connected and will not
allow you to select certain softkeys. The text on these softkeys appears
grayed out.
1. Press .
2. Connect the power sensor to the POWER REF output.
3. Press to calibrate the power meter. During calibration the
wait symbol is displayed. (The power meter automatically turns
on the POWER REF output.)
Example
To calibrate the power meter with an HP E-series power sensor.
• Press .
• Connect the power sensor to the POWER REF output.
• Press .
Calibration Procedure using HP 8480 Series Power Sensors
The following procedure describes how you calibrate the power meter with
the HP 8480 series power sensors.
There are a variety of different methods to connect the power sensors to
the power meter depending on the model of power sensor you are using.
Refer to Table 2-1 on page 2-7 for details on connecting different power
sensor models.
1. Press .
2. Verify the reference calibration factor of your power sensor with
that displayed under . The value shown is obtained from
the sensor calibration table if one is selected, otherwise it is the
last value set or the default of 100%. If the value is not correct
press . The power meter displays the reference calibration
factor in a pop up window. Modify this reference calibration factor
(see below) as desired.
Zero
Cal
Cal
Zero
Cal
Cal
Zero
Cal
Ref CF
Ref CF
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