R&S ZNB Series User Manual page 731

®
R&S ZNB/ZNBT
Select "Available Cable Types..." to access the list of predefined and user-defined
cable types (see
Remote command:
CALCulate<Chn>:TRANsform:DTFault:SELect
Start Cal Unit... (P2) Refl OSM / Start Cal... (P2) Refl OSM
Sets up and runs the "Calibration Unit"/"Calibration Setting" wizard to perform a full
one-port calibration at physical port 2 (only port 2 enabled and calibration type "Refl
OSM" preselected).
The calibration serves several purposes:
●
Adjust the reference plane (distance zero).
●
Normalize the trace (total reflection of the signal corresponds to a 0 dB peak).
●
Avoid spurious effects, e.g. peaks on the impulse response trace that are not due
to a fault.
For descriptions of the calibration wizards and the corresponding remote commands,
see Calibration Unit wizard
Note: Make sure to select a sufficient number of sweep points and a suitable fre-
quency span before you start the calibration. Otherwise the measurement can yield
inaccurate results.
Use
Fault Limit Check
Enables/disables checking the current "Distance to Fault" trace for spikes above the
given
The fault limit is defined relative to the 0 dB-line in the test diagram, i.e. the peak
response value for total reflection after proper calibration.
Note that the fault limit is handled like any other limit line. When "Fault Limit Check" is
enabled, the current "Fault Limit" forms a new upper line segment replacing other pre-
viously defined limit lines (see
on page 377).
Remote command:
CALCulate<Chn>:TRANsform:DTFault:PEAK:STATe
User Manual 1173.9163.02 ─ 62
Chapter 5.16.4.2, "Available Cable Types...
Auto Number of Points
Fault Limit (red line).
and Calibration Setting
to let the firmware assist you.
Chapter 5.6.1.2, "Define Limit Lines
GUI reference
Applic softtool
dialog", on page 732).
wizard.
dialog",
731