R&S ZVB - Calibration Procedure

R&S
®
ZVA / R&S
®
ZVB / R&S
®
ZVT GUI Reference
Channel Menu
Operating Manual 1145.1084.12 – 30 484
 A single full n-port calibration for n calibrated ports.
 n full one-port calibrations for n calibrated ports.
 n/2 * (n – 1) separate full two-port (TOSM or UOSM) calibrations for n calibrated ports (all possible
2-port combinations). This calibration type is required for isolation measurements on mixers where
a full 3-port calibration is inappropriate.
 (n – 1) one path two port calibrations for n calibrated ports (all possible 2-port combinations from
the Node Port to any other port). The node port is the source port for each one path two port
calibration (fully calibrated port).
 (n – 1) transmission normalizations (bidirectional, forward or reverse) for n calibrated ports (all
possible 2-port combinations from the first port to any other port). "Forward" transmission
normalization means that the signal direction is from the ports with the lower numbers to the port
with the higher numbers.
Example: Select ports no. 1, 2, 3. A forward transmission normalization calibrates the S-
parameters S
21
, S
31
, and S
32
. A reverse transmission normalization calibrates the S-parameters
S
12
, S
13
, and S
23
. A bidirectional transmission normalization calibrates all six S-parameters.
Remote control:
[SENSe<Ch>:]CORRection:COLLect:AUTO
[SENSe<Ch>:]CORRection:COLLect:AUTO:PORTs
[SENSe<Ch>:]CORRection:COLLect:AUTO:PORTs:CONNection?
[SENSe<Ch>:]CORRection:COLLect:AUTO:PORTs:TYPE
[SENSe<Ch>:]CORRection:COLLect:AUTO:TYPE
Calibration Procedure
The automatic calibration is started on clicking Calibration Unit in the Start Calibration menu. The
Calibration Unit dialog shows the active cal unit type and characterization, the calibrated ports, and the
progress of the calibration procedure.
Messages on opening the dialog and in the dialog
When opening the Calibration Unit dialog, the network analyzer checks the current channel settings for
compatibility with the connected cal unit. The following message may be displayed before the dialog is
opened:
 "Warning: Current frequency range is not covered by available data of calibration unit."
--> Adjust frequency range of the channel or select another cal unit characterization or select
another cal unit type.
The following information may appear in the warning section inside the dialog:
 "User characterization is active! ..."
In general, user characterizations are required for modified test setups (e.g. cal units with external
adapters); see Manual Characterization of Cal Units. For an unmodified calibration unit, the
factory calibration is adequate.
 "Current test port connectors will be changed ..."
If the test port connectors in the Port Configuration dialog and the connectors of the calibration
unit do not match, the test port connectors are changed.
 "Calibration requires measurements at frequencies up to 1 GHz apart from current single
frequency ..."
If a sweep type with constant frequency (Power, Time, CW Mode) and a full n-port (n > 1)
calibration type is active, then the analyzer must perform a frequency sweep to determine the