Glossary: Frequently Used Terms
R&S
®
ZNC
757
User Manual 1173.9557.02 ─ 13
TRL:
A calibration type using the two-port standards Through and Line, which are both
assumed to be ideally matched. Beyond that, the through must be lossless, and its length
must be exactly known. Especially useful for DUTs in planar line technology.
TRM:
A calibration type which requires a low-reflection, low-loss Through standard with
an electrical length that may be different from zero, a Reflect, and a Match. Especially
useful for DUTs in test fixtures.
TSM:
A calibration type using three fully known standards (Through, Short, Match), rec-
ommended for 2-port measurements on coaxial systems.
U
UOSM:
A variant of TOSM calibration using an unknown but reciprocal Through standard.
Especially for port combinations with different connector types.
V
VNA:
(Vector) Network Analyzer, in particular the R&S ZNC.