Agilent Technologies E7495A RF Manual de Serviço Página 382

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382 Chapter 13
Power Meter
Making an Average Power Measurement
Power Meter
8 [Calibrate]
9 Connect the power
sensor to the Power Ref
50 MHz port.
The test set supports the Agilent 8482A, 8481A,
and N8481A/N8482A with Option CFT power
sensors.
10 [Continue]
11 [Cal Factor]
12 Enter the cal factor
using the numeric
keypad.
A list of cal factors is printed on the label of the
power sensor head. Select one that’s within the
operating frequency of the base station.
For an example of a power sensor calibration table,
see below.
Using the example power sensor calibration table, if
you were interested in 800 MHz, then:
800 MHz has a Cal Factor percentage of ~98.2
Note: Interpolate the Cal Factor from the frequency
range provided on the power sensor. The example
sensor calibration table shows that 800 MHz is
between 300 to 1000 MHz. Since 300 MHz is listed
at 98.5 and 1000 MHz (1 GHz) is at 98.1, 800 MHz
would be ~98.2.
13 [%]
14 Connect the external
attenuator.
Step Notes
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