R&S FSP
4.6.1.2
Entry and Editing of Limit Lines
A limit line is characterized by
•
its name
•
the assignment of domain (frequency or time)
•
the scaling in absolute or relative times or frequencies
•
the vertical unit
•
the interpolation
•
the vertical scaling
•
the vertical threshold (only with relative vertical scaling)
•
the margin
•
the definition of the limit line as either upper or lower limit.
•
the data points for frequency/time and level.
At the time of entry, the R&S FSP immediately checks that all limit lines are in accor-
dance with certain guidelines. These guidelines must be observed if specified oper-
ation is to be guaranteed.
•
The frequencies/times for each data point must be entered in ascending order,
however, for any single frequency/time, two data points may be input (vertical
segment of a limit line).
The data points are allocated in order of ascending frequency/time. Gaps are not
allowed. If gaps are desired, two separate limit lines must be defined and then
both enabled.
•
The entered frequencies/times need not necessarily be selectable in R&S FSP. A
limit line may also exceed the specified frequency or time domains. The minimum
frequency for a data point is -200 GHz, the maximum frequency is 200 GHz. For
the time domain representation, negative times may also be entered. The valid
range is -1000 s to +1000 s.
•
The minimum/maximum value for a limit line is -200 dB to +200 dB for the
logarithmic or 10
Operating Manual 1164.4556.12 - 06
-20
to 10
+20
or -99.9% to + 999.9% for the linear amplitude scales.
Instrument Functions
Basic Settings
4.151