Command Reference
R&S
®
ZNC
695
User Manual 1173.9557.02 ─ 13
[SENSe<Ch>:]CORRection:DATA
<ErrorTerm>, <Parameter>...
Writes or reads system error correction data for a specific channel
<Ch>
and calibration
method (
[SENSe<Ch>:]CORRection:COLLect:METHod
). The analyzer test ports 1
or 2 are implicitly specified with the correction terms. The setting command can be used
to transfer user-defined correction data 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 (
)
The sweep must be stopped to transfer calibration data; see program example for
.
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:
to transfer
calibration data for arbitrary analyzer ports. The analyzer provides a default calibration
corresponding to a test setup which does not introduce any systematic errors; see
.
G and H matrices
The 7-term calibration types named Txx (e.g. TOM, TSM, TRM, TRL, TNA) are based on
a network analyzer with two ports i and j, each equipped with a test receiver and a ref-
erence 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:
test
i
ref
i
22
21
12
11
i
i
m
m
G
G
G
G
a
b
●
The error two-port P
H
is assigned to port j of the analyzer. Its transmission matrix H
describes how the system errors modify the measured incident and outgoing waves
at port j:
ref
j
test
j
22
21
12
11
j
j
m
m
H
H
H
H
b
a
In the two equations above, a and b denote the waves at the calibrated reference plane
i and j (e.g. the input and output of the 2-port DUT). The m waves are the raw measured
waves of test port i and j. The subscripts "ref" and "test" refer to the reference and test
receivers, respectively. During the calibration the network analyzer acquires ratios of
wave quantities, which leaves one of non-diagonal matrix elements of G or H as a free
normalization factor. The network analyzer uses the normalization H
21
= 1.
Suffix:
<Ch>
.
Channel number of the calibrated channel
R&S ZVR/ZVAB Compatible Commands
