Concepts and features
R&S
®
ZNA
166User Manual 1178.6462.02 ─ 20
DUTs of this sort are also known as noninsertable devices.
A suitable calibration kit is then required for each of the different connector types. The
kit must include, as a minimum, the standards that are used for one-port calibration.
The through-connection between test ports with different connector types must be
made using adapters.
The problem here is that unlike Through standards, adapters are usually not character-
ized, i.e. their delay time/transmission phase is unknown.
If the adapter fulfills the reciprocity condition S
21
= S
12
, it can serve as Unknown
through in an UOSM calibration (see "UOSM: TOSM with unknown Through"
on page 165).
Adapter Removal is an extension of the 2-port UOSM calibration. It requires two addi-
tional reflection OSM calibrations with the adapter successively connected to port 1
and port 2.
Calibration
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