Concepts and features
R&S
®
ZNA
273User Manual 1178.6462.02 ─ 29
quencies" dialog. A test setup with two mixers involves two independent conver-
sion settings.
The signal description above, with the swept RF signal and the LO signal at a fixed fre-
quency, corresponds to the default configuration. In the "Frequencies" dialog, you can
select any of the signals as a "Sweep/CW" signal. You can set the frequency range for
this signal via "Start/Stop" or "CW Frequency". A second signal is at a "Fixed" fre-
quency, and the third at the calculated sum or difference frequency ("Auto").
The labeling of the complete diagrams depends on the sweep type.
●
The following mixer signal diagram corresponds to a frequency sweep:
– RF signal (left side): Analyzer port number (e.g. Port 1), frequency sweep
range (or fixed frequency, if the LO signal is swept), CW power, frequency con-
version settings (1 / 1 denotes no conversion).
– LO signals (1 or 2, from below): Signal source (analyzer port or external gener-
ator), fixed power and frequency (or frequency sweep range, if the RF signal is
at fixed frequency), frequency conversion settings.
– IF signal (right side): Analyzer port number (e.g. Port 2), frequency range =
(sweep range + LO) or |sweep range – LO|, expected fixed power.
●
The following mixer signal diagram corresponds to a power sweep:
– RF signal (left side): Analyzer port number (e.g. Port 1), power sweep range or
fixed power, CW frequency, frequency conversion settings (1 / 1 denotes no
conversion).
– LO signals (1 or 2, from below): Signal source (analyzer port or external gener-
ator), fixed power or power sweep range, CW frequency, frequency conversion
settings.
– IF signal (right side): Analyzer port number (e.g. Port 2), fixed frequency = (RF
+ LO) or |RF – LO|, expected power range.
Optional extensions and accessories
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