Concepts and Features
R&S
®
ZNA
201
User Manual 1178.6462.02 ─ 12
The intermodulation distortion measurement can be extended to frequency-converting
DUTs. E.g., it is possible to feed the two-tone source signal to the RF input of a mixer
and measure the intermodulation distortion of the IF output signal, after conversion
with an additional LO signal.
VNA
1
3
2
4
Upper Tone
DUT
1
2
Lower Tone
LO
For a 4-port R&S
ZNA with four sources, the mixer's LO signal can also be provided by
the VNA.
Two-Tone Generation and Combination
To generate a two-tone signal, two independent RF signal sources are required.
For a R&S
ZNAxx-B213)
Direct Generator/Receiver Access
(R&S
ZNAxx-B16), lower and upper tone
must be combined from the RF ports on the analyzer and connected external genera-
tors. An external combiner is required.
Optional Extensions and Accessories