R&S ZVL GUI Reference
Channel Menu
Operating Manual 1303.6580.32-06
226
• T
he bandwidth settings during the calibration differ from the bandwidth settings during
t
he measurement.
• The point delay settings during the calibration differ from the point delay settings during
the measurement.
Cal
Off !
The system error correction is no longer applied (e.g. turned off by the user). See also
Calibration Overview.
Repeat Prev Cal
Reopens the Measure Standards dialog of the calibration wizard to repeat and optimize the previous
calibration without necessarily repeating the measurement of all standards.
Repeat Prev Cal is active only if Keep Measurement Data for >Repeat Cal< in the Measure Standards
dialog was enabled when the last calibration for the active channel was successfully completed.
Additional conditions for repeating a calibration
Changing the channel settings can cause incompatibilities between the current instrument state and the
previous calibration. In particular the following conditions must be met:
• The configuration of all ports needed must be correct (see Select Connector– Physical Port
Number #).
• The Sweep Type must be unchanged.
If incompatible settings occur the analyzer displays an error message and does not repeat the calibration.
Correction Off
Activates or deactivates the system error correction in the active channel. Correction Off is active only if a
valid system error correction is assigned to the active channel; see Cal State in the Calibration Manager.
A red label Cal Off ! appears behind the trace list if the system error correction is switched off; see
also Calibration Overview.
Remote control:
[:SENSe<Ch>]:CORRection:STATe ON | OFF
Port Extensions
The Port Extensions submenu defines a length offset and a loss for the test ports. The offset parameters
complement the system error correction, compensating for the known length and loss of a (non-dispersive
and perfectly matched) transmission line between the calibrated reference plane and the DUT.
Length offset parameters: Definition
The Delay is the propagation time of a wave traveling through the transmission line. The Electrical
Length is equal to the Delay times the speed of light in the vacuum and is a measure for the length
of transmission line between the standard and the actual calibration plane. For a line with
permittivity N
r
and mechanical length L
mech
the delay and the electrical length are calculated as
follows:
To Next Page
Loading...
