Concepts and features
R&S
®
ZNA
246User Manual 1178.6462.02 ─ 20
– RF signal (left side): Analyzer port number (e.g. Port 1), fixed power, CW fre-
quency, 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, CW frequency, frequency conversion settings.
– IF signal (right side): Analyzer port number (e.g. Port 2), fixed frequency = (RF
+ LO) or |RF – LO|, expected fixed power.
The ports in the mixer signal diagrams are physical ports. To measure mixers with dif-
ferential inputs, define a logical port configuration and enter one of the physical ports
that belong to the logical port. The analyzer implicitly accounts for the logical port set-
tings.
4.7.3.5 Vector mixer measurements
Option R&S ZNA-K5
Option R&S ZNA-K5 enables measurement of the parameters of an external mixer
including phase, e.g. the complex conversion loss or reflection coefficients.
In contrast to Scalar mixer measurements (with option R&S ZNA-K4), vector mixer
measurements provide magnitude and phase information, including group delay, about
the mixer under test (MUT).
Option R&S ZNA-K5 requires option R&S ZNA-K4.
4.7.3.6 Embedded LO mixer group delay measurements
Option R&S ZNA-K9
Option R&S ZNA-K9 enables measuring a mixer's absolute and relative group delay.
The mixer delay measurement is an extension of the scalar mixer measurement. The
network analyzer generates a two-tone RF signal as a mixer input signal and meas-
ures the converted IF signal at the mixer output. The mixer delay is derived from the
relative phases of the two-tone signals at the mixer input and the mixer output.
Optional extensions and accessories
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