Rohde & Schwarz ZNB20, User Manual

Page: 273 / 1332

GUI Reference
R&S
®
ZNB/ZNBT
258 User Manual 1173.9163.02 ─ 38
Background information
Refer to the following sections:
●
Chapter 4.5, "Calibration" , on page 139
●
Chapter 4.5.5, "Automatic Calibration" , on page 158
●
Chapter 4.5.6, "Scalar Power Calibration" , on page 166
●
Chapter 4.5.7, "SMARTerCal" , on page 172
●
Chapter 4.1.5, "Data Flow" , on page 85
The "Start... (Cal Unit)" buttons are only active if a calibration unit is connected to the
analyzer.
It is possible to set up, perform and activate multiple system error corrections or
SMARTerCals in a single calibration procedure. However, this
Multiple Cal in Calibra-
tion Wizard feature is disabled by default and has to be activated in the "Calibration"
tab of the System Config dialog.
To prevent the VNA firmware from running out of memory, after performing a full n-port
calibration of more than 4 test ports (see
Chapter 4.7.20, "External Switch Matrices" ,
on page 226) the number of sweep points is automatically reduced.
Depending on the number of calibrated ports, the following reduction applies:
●
1 - 4 ports: no reduction
●
5 - 8 ports: reduction to 6001
●
9 - 16 ports: reduction to 2001
●
16 - 32 Ports: reduction to 801
●
> 32 Ports: reduction to 401
If the number of sweep points is actually reduced, an information popup box indicates
the reduction:
If you need a higher number of sweep points, it is recommended reduce the number of
ports. The "Balanced Ports..." button in the popup opens the
Balanced Ports Dialog
that allows you set some ports to "Unused".
Cal Softtool