Rohde & Schwarz ZNB20, User Manual

Page: 976 / 1332

Command Reference
R&S
®
ZNB/ZNBT
961 User Manual 1173.9163.02 ─ 38
Parameters:
<Selectivity> NORMal | MEDium | HIGH
NORMal - F filter with normal selectivity and shortest settling
time.
MEDium - IF filter with steeper edges and longer settling time.
HIGH - IF filter with highest selectivity but longest settling time.
*RST:
NORMal
Example: See
[SENSe<Ch>:]SEGMent<Seg>:BWIDth[:
RESolution]:SELect:CONTrol
Manual operation: See "Selectivity" on page 237
7.3.15.3 [SENSe:]CORRection:CDATa...
The
[SENSe:]CORRection:CDATa...
commands read or write system error correc-
tion data.
[SENSe<Ch>:]CORRection:CDATa <ErrorTerm>, <SourcePort>, <LoadPort>,
<CorrectionData>...
[SENSe<Ch>:]CORRection:CDATa:PORT<PhyPt> <ErrorTerm>, <SourcePort>,
<LoadPort>, <CorrectionData>...
Writes or reads system error correction data for a specific channel
<Ch>
, calibration
method (
[SENSe<Ch>:]CORRection:COLLect:METHod:DEFine
), and port combi-
nation
<SourcePort>
,
<LoadPort>
. The setting command can be used to transfer
user-defined correction data
<CorrectionData>
to the analyzer; the query returns
the current correction data set. ASCII or block data can be transferred, depending on
the selected data transfer format (
FORMat[:DATA]
).
The sweep must be stopped to transfer calibration data; see program example for
[SENSe<Ch>:]CORRection:COLLect:SAVE:SELected:DEFault
.
Note: This command affects the active calibration of channel no.
<Ch>
or the factory
calibration (if no channel calibration is active). For the factory calibration, the query
form is allowed only (no change of factory calibration data).
Tip: The analyzer provides a default calibration corresponding to a test setup which
does not introduce any systematic errors; see
[SENSe<Ch>:]CORRection:
COLLect:SAVE:SELected:DEFault
.
For an overview of calibration methods and error terms refer to Chapter 4.5.1, "Calibra-
tion Types" , on page 141.
G and H matrices
The 7-term calibration types named Txx (e.g. TOM, TRM, TRL, TNA) are based on a
network analyzer with two ports i and j, each equipped with a test receiver and a refer-
ence receiver. The system errors are described in terms of two "error two-ports" P
G
and P
H
:
●
The error two-port P
G
is assigned to port i of the analyzer. Its transmission matrix G
describes how the system errors modify the outgoing and incident waves at port i:
SCPI Command Reference