Agilent Technologies 54657A Especificaciones Pagina 103

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1 Connect the equipment.
a Connect the signal generator to the input of the power splitter.
b Connect the power sensor to one output of the power splitter, and
connect channel 1 of the oscilloscope to the other power splitter
output. Set the oscilloscope input impedance to 50.
2
Set up the oscilloscope.
a Press Setup , then press the Default Setup softkey.
b Set the time base to 500 ns/div.
c Press 1
to select channel 1, then select 50 input and 20 mV/div.
d Press Display , then press the Average softkey.
e Toggle the # Average softkey to select 8 averages.
3
Set the signal generator for 1 MHz at about –8.4 dBm.
Notice that the signal on the display is about 5 cycles and six divisions of
amplitude.
4
Press Voltage , then press the Vp-p softkey.
Wait a few seconds for the measurement to settle (averaging is complete),
then note the Vp-p reading from the bottom of the display.
Vp-p = _______ mV.
5
Set the calibration factor percent of the power meter to the 1 MHz
value from the calibration chart on the probe, then press dB (REF)
on the power meter to set a 0 dB reference.
6 Change the frequency of the signal generator to 500 MHz
7 Set the calibration factor of the power meter to the 500 MHz percent
value from the chart on the probe (interpolate the value between 300
MHz and 1 GHz if necessary.)
Adjust the amplitude of the signal generator for a power reading as close as
possible to 0.0 dB (REL). Power meter reading = ______ dB.
Service
Verifying Oscilloscope Performance
4-11
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