Agilent Technologies Agilent 4396B - Manual (Page 44)

Selecting the Input The analyzer has four inputs; S, R, A, and B . In most spectrum
measurements , the S input is used. The R, A, and B inputs can also
be used for a spectrum measurement, but the dynamic range of these
inputs is 20 dB worse than the S input and the attenuator is not
variable . Therefore , to get the most accurate results , you should use
the S input for spectrum measurements .
In the spectrum analyzer mode , the S input is selected by default. In
the following steps , you verify the S input is selected.
In the MEASUREMENT block, press 4 Meas 5 . V erify the
F FFF
S in
F FFFFFFFFFFFFFFFFFFFFFFFFFFFF
SPECTRUM: S is underlined.
(This shows that the S input is selected for a
spectrum analyzer measurement.)
Setting the Frequency Range
The CAL OUT signal (20 MHz at 020 dBm) is connected as test signal
source . T o see this signal on display , you must set the appropriate
frequency range (in this case , 0 to 80 MHz):
In the SWEEP block, press 4 Start 5 . Press 4 0 5 .
2-6 Spectrum Analyzer T our