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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
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
Figure
2-12). Therefore, when viewing the display, on alternate 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
Using the Mixers with the 856X Series Spectrum Analyzers
SIG ID ON OFF
,
EXTERNAL MIXER
,
SIGNAL IDENT
until
is selected.
ON
. When using this function, smaller spans
.
Figure 2-13 on page
Operation
44.
43
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