Trace Menu R&S
®
ZVA/ZVB/ZVT
1145.1084.12 4.102 E-6
Bandstop Search
Activates the search for a bandstop region on the active trace and activates bandfilter Tracking. A
bandstop region is the lowest peak (local minimum) in the search range with a minimum excursion that
is specified by means of the x dB Bandwidth parameter.
When Bandstop Search is activated the analyzer uses (or creates) the four markers Mkr 1 to Mkr 4 to
locate the bandstop region:
• Mkr 1 indicates the minimum of the peak.
• Mkr 2 indicates the point on the left edge of the peak where the trace value is equal to the
minimum plus x dB Bandwidth.
• Mkr 3 indicates the point on the right edge of the peak where the trace value is equal to the
minimum plus x dB Bandwidth.
• Mkr 4 indicates the center of the peak, calculated as the arithmetic mean value of the LBE and
UBE positions.
For a symmetric peak, the positions of Max and Center coincide.
The band filter search results are displayed in the bandfilter info field.
Remote control:
CALCulate<Ch/Tr>:MARKer<Mk>:FUNCtion:BWIDth:MODE BSTOP
CALCulate<Ch/Tr>:MARKer<Mk>:FUNCtion:EXECute BFILter
Bandfilter Tracking
Causes the bandfilter search to be repeated after each sweep: When tracking mode is active the
markers typically change their horizontal and their vertical positions as the measurement goes on.
Tracking for the different bandfilter search modes is enabled or disabled in a selection box. Selecting a
search mode for tracking also activates this mode.
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