Rohde & Schwarz ZVL series - Page 199

R&S ZVL GUI Reference
Trace Menu
Operating Manual 1303.6580.32-06
184
• F
ull One-Port P2 Cal o
pens the calibration wizard to perform a full one-port calibration at port no.
2 and re-adjust the reference plane (distance zero).
• Fault Limit defines a minimum response value in dB for a trace maximum to be considered as
being due to a fault.
• Show Fault List displays a list of all peaks that fulfil the Fault Limit condition.
• Export Fault List opens a Save As... dialog to write the fault list data to an ASCII file.
Distance-to-Fault
Enables or disables the location of a discontinuity on a transmission line (with option R&S ZVL-K2). The
distance-to-fault measurement requires a linear frequency sweep (Channel – Sweep – Sweep Type – Lin.
Frequency). The analyzer automatically disables the distance-to-fault measurement as soon as a different
sweep type is selected.
Default settings for distance-to-fault
The following settings are performed automatically when a distance-to-fault measurement is enabled
(Trace – Meas– Distance-to-Fault: On):
• The reflection coefficient S22 is selected as measured quantity.
• The stimulus axis shows a distance window. The start and stop distance is displayed below the
channel settings.
• The cable type (e.g. Ideal Air Line) is displayed in the trace list. A context menu opens the Cable
Type dialog.
• The number of points is increased, if necessary. See Auto Number of Points.
Remote control:
CALCulate<Chn>:TRANsform:DTFault:STATe
Start Distance..., Stop Distance...
Defines the distance range (x-axis range) for the distance-to-fault measurement. The Start Distance and
the Stop Distance correspond to the left and right edge of the diagram area; they are shown below the
channel settings:
Distance trace settings
While a distance-to-fault measurement is active the trace settings behave as follows:
• Start Distance... and Stop Distance... configure the distance axis.
• dB Mag is the recommended Trace Format, although other formats are available.
• Limit lines can be defined like the limit lines for time sweeps.
• The marker and bandfilter search functions are available for the transformed trace.
Note that only the reflection coefficient S
22
(and the corresponding impedance and admittance
parameters) are available as measured quantities.
Remote control:
CALCulate<Chn>:TRANsform:DTFault:STARt
CA
LC
ulate<Chn>:TRANsform:DTFault:STOP
CALCulate<Chn>:TRANsform:DTFault:CENTer
CALCulate<Chn>:TRANsform:DTFault:SPAN