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Operation
Using the Mixers with the 856X Series Spectrum Analyzers
Figure 2-11 Signal Responses Produced by a 50 GHz Signal in U Band
Identify signals with the frequency-shift method
6. Signal-identification routines that identify the signal and images are available on
instruments with firmware revisions 920528, or with Option 008. The frequency-shift
method of identifying valid signals uses the spectrum-analyzer function
When using this function, smaller spans will yield more accurate measurements.
a. Span down to 50 MHz.
b. Press
AUX CTRL
c. Press
SIG ID ON OFF
Any signal not produced by the currently selected harmonic will be shifted horizontally
on alternate sweeps (see
sweeps the signal will appear, then not appear, at the frequency of interest. The correct
signal produced by the selected harmonic will be shifted in a vertical direction only, as
shown in
Figure
2-13.
34
,
,
EXTERNAL MIXER
SIGNAL IDENT
until
is selected.
ON
2-12). Therefore, when viewing the display, on alternate
Figure
SIG ID ON OFF
.
.
Chapter 2
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