User`s guide

45
Operation
Using the Mixers with the 856X Series Spectrum Analyzers
Identify signals in wide frequency spans
7. SIG ID AT MKR identifies signals in wide frequency spans, using harmonic search. SIG ID AT MKR
automatically determines the proper frequency of a signal and displays its value on the spectrum
analyzer.
• Activating
SIG ID AT MKR on an image of the signal will yield a reading in the active block, as
shown in Figure 2-14. The true signal frequency is given with an identifier that the marker resides
on an image. If the marker is placed on a true signal, and
SIG ID AT MKR is activated, the signal
frequency will appear without the IMAGE notation, as shown in Figure 2-15 on page 46.
8. To activate
SIG ID AT MKR:
a. Place a marker on a signal.
b. Press
AUX CTRL, EXTERNAL MIXER, SIGNAL IDENT, SIG ID AT MKR.
9. To exit the external mixer mode, press
AUX CTRL, then INTERNAL MIXER.
Figure 2-14
SIG ID AT MKR Performed on an Image Signal