
Concepts and Features
R&S
®
ZNA
135
User Manual 1178.6462.02 ─ 12
Calibration Type
Standards
Parameters
Error Terms
General Accuracy
Application
TOM
(n-port)
Open, Match (at
both ports),
Through (between
all port pairs)
All
Reflection tracking,
Source match,
Directivity,
Load match,
Transmission track-
ing
High
Reflection and
transmission mea-
surements.
TSM
(n-port)
Short, Match (at
both ports),
Through (between
all port pairs)
All
Reflection tracking,
Source match,
Directivity,
Load match,
Transmission track-
ing
High
Reflection and
transmission mea-
surements.
TRM
(n-port)
Reflect (equal at
both ports), Match,
Through (between
all port pairs)
All
Reflection tracking,
Source match,
Directivity,
Load match,
Transmission track-
ing
High
Reflection and
transmission mea-
surements, espe-
cially in test fixtures.
TRL
(n-port)
Reflect (at both
ports),
Through, Line1,
other Lines
(optional), combina-
tion with TRM
(optional)
All
Reflection tracking,
Source match,
Directivity,
Load match,
Transmission track-
ing
High, high directiv-
ity
Reflection and
transmission mea-
surements, espe-
cially for planar cir-
cuits. Limited band-
width.
TNA
(n-port)
Through, Attenua-
tion, Symmetric
network
All
Reflection tracking,
Source match,
Directivity,
Load match,
Transmission track-
ing
High, lowest
requirements on
standards
Reflection and
transmission mea-
surements, espe-
cially for planar cir-
cuits.
1)
Or any other 3 known one-port standards. To be used in a guided calibration, the known standards must be declared to be Open,
Short, and Match irrespective of their properties.
2)
Or any other known two-port standard. To be used in a guided calibration, the known standard must be declared to be Through,
irrespective of its properties.
The calibration type must be selected in accordance with the test setup. Select the cali-
bration type for which you can obtain or design the most accurate standards and for
which you can measure the required parameters with best accuracy.
Calibration