Rohde & Schwarz 1332.4500.22, User Manual

Page: 495 / 1476

GUI Reference
R&S
®
ZNA
495 User Manual 1178.6462.02 ─ 12
6.11.4.1 Controls on the Use Cal Tab
The buttons in the "Use Cal" tab open the following dialogs:
●
"Scalar Power Cal" – "Active Power Cals...": Active Power Cals Dialog
●
"Manage Cals" – "Cal Manager...": See Calibration Manager Dialog
User Cal Active
Activates or deactivates the system error correction in the active channel. "User Cal
Active" is available only if a valid system error correction is available for the active
channel; see "Channel State" in
Chapter 6.11.4.3, "Calibration Manager Dialog" ,
on page 498.
Note: A label "Cal Off" appears behind the trace list if the system error correction is
switched off; see also Chapter 5.5.4, "Calibration Labels" , on page 151. The calibration
status of each channel and trace appears in the setup information ("Setup" > "Info..." >
"Setup").
Remote command:
[SENSe<Ch>:]CORRection[:STATe]
Load Match Correction
Load match correction prevents a possible impairment of the transmission S-parameter
measurements due to the influence of the waves reflected at the receive (load) ports. It
is performed as follows:
●
The correction is based on the system error corrected a- and b-waves of the
source and load ports. An appropriate calibration is a prerequisite for the load
match correction; see
Chapter 5.7.3.1, "Calibration Options" , on page 199.
●
A reverse sweep is automatically performed during the measurement.
●
The correction is calculated under the assumption that the reverse transmission
factor is zero (e.g. S
12
=0 if S
21
is measured).
Cal Softtool