Rohde & Schwarz ESW Series - Page 126

Measurements and Result Displays
R&S
®
ESW
126User Manual 1177.6298.02 ─ 08
When you have selected the "Subranges" search mode, define the number of
subranges you want to split the frequency range into, and the number of peaks
the R&S ESW looks for in each subrange.
You can define up to 50 subranges, with each subrange containing a maximum
number of 10 peaks. All subranges span the same frequency range.
Remote command:
Number of peaks: CALCulate<n>:PEAKsearch:SUBRanges[:VALue]
on page 466
Number of subranges: CALCulate<n>:PEAKsearch:SUBRanges[:VALue]
on page 466
Peaks per subrange: CALCulate<n>:PEAKsearch:SUBRanges:PCOunt
on page 465
Defining peak characteristics
Defines the characteristics of a signal that identify it as a peak.
The peak excursion defines the minimum level by which a signal must rise or fall so
that it will be identified as a maximum or a minimum during the peak search.
The margin defines the distance relative to a limit line that a signal may at most have
so that it will be identified as a peak.
(Note: a limit line margin defined for the limit line itself (see Margin) is ignored for a
peak search.)
For more information, see "Defining peak characteristics (or "When is a peak a
peak?")" on page 123.
Remote command:
Peak excursion: CALCulate<n>:MARKer<m>:PEXCursion on page 463
Margin: CALCulate<n>:PEAKsearch:MARGin on page 465
Selecting a limit line
Selects one or more limit lines to evaluate for a peak search.
The table shows all limit lines available on the R&S ESW that are compatible to the
current measurement configuration. You can activate the limit line by marking the cor-
responding checkbox and assigning the limit line to a trace.
For more information on designing, editing and managing limit lines in general, see
Chapter 11.5, "Display and Limit Lines", on page 239.
For more information on the effects of a limit line on the peak search, see "Defining
peak characteristics (or "When is a peak a peak?")" on page 123.
Remote command:
See Chapter 15.7.5.2, "Limit Lines", on page 563.
Enabling and disabling limit checks
Turns limit checks for pre-measurement on and off.
By disabling limit checks, FAIL messages for limit line violations during premeasure-
ments will no longer be displayed.
Test Automation