Vector Network Analysis
R&S
®
ZNH
149
User Manual 1334.5985.02 ─ 02
8.1.2
Calibration Methods
The R&S
ZNH provides several calibration methods on one or two test ports for vector
measurements.
●
Refl Norm Open
The reflection normalization calibration routine requires connection of the Open
standard to the selected test ports. It is used to derive reflection tracking error
terms.
●
"Refl Norm Short"
The reflection normalization calibration routine requires connection of the Short
standard to the selected test ports. It is used to derive reflection tracking error
terms.
●
"Refl OSM"
The full one-port calibration routine requires a Short, an Open and a Match stan-
dard to be connected to the selected test port. It is used to derive source match,
reflection tracking and directivity error terms.
●
"Trans Norm P1"
The transmission normalization calibration routine requires a Through standard
from Por1 to Port2. It is used to derive transmission tracking error term.
●
"Trans Norm P2"
The transmission normalization calibration routine requires a Through standard
from Por2 to Port1. It is used to derive transmission tracking error term.
●
"Trans Norm Both"
The transmission normalization calibration routine requires a Through standard
from both test ports (Port1 to Port2 and Port2 to Port1). It is used to derive trans-
mission tracking error term for each direction.
●
"TOSM"
The TOSM is a calibration routine requires the same standard as "Refl OSM" with
a Through standard from both test ports. All measurements are performed in the
forward and reverse direction. It is used to derive the source match, reflection
tracking error and directivity error at all source ports, and transmission tracking
error terms for each direction.
●
"UOSM"
The classic TOSM does not provide direct calibration of test setups for DUT equip-
ped with different types of connectors at the input and output. The UOSM is used
to overcome such problem, it involves the same as effort as TOSM calibration, but
with unknown Through standard.
It can be selected as follows:
–
If different connector types are assigned to the test ports, the analyzer auto-
matically replaces TOSM by UOSM.
–
If the same connector types are used but an appropriate Through standard is
not defined, the analyzer also replaces TOSM by UOSM.
–
UOSM can be selected explicitly in the
Each calibration method is suitable for certain kinds of measurement tasks.
●
For high isolation measurements, use the normalization and isolation calibration
methods.
Calibrating Measurements
