The Spectrum Application (RF Measurements)
R&S
®
FPL1000
427
User Manual 1178.3370.02 ─ 11
tolerance band. The lower and upper limits may each be specified by a limit line. Then,
the amplitude curve can be controlled either visually or automatically for any violations
of the upper or lower limits (GO/NOGO test).
The R&S
FPL1000 supports limit lines with a maximum of 200 data points. Eight of the
limit lines stored in the instrument can be activated simultaneously. The number of limit
lines stored in the instrument is only limited by the capacity of the storage device used.
Limit line data can also be exported to a file in ASCII (CSV) format for further evalua-
tion in other applications. Limit lines stored in the specified ASCII (CSV) format can
also be imported to the R&S
FPL1000 for other measurements.
Compatibility
Limit lines are compatible with the current measurement settings, if the following
applies:
●
The x unit of the limit line has to be identical to the current setting.
●
The y unit of the limit line has to be identical to the current setting with the excep-
tion of dB based units; all dB based units are compatible with each other.
Validity
Only limit lines that fulfill the following conditions can be activated:
●
Each limit line must consist of a minimum of 2 and a maximum of 200 data points.
●
The frequencies/times for each data point must be defined in ascending order;
however, for any single frequency or time, two data points may be entered (to
define a vertical segment of a limit line).
●
Gaps in frequency or time are not allowed. If gaps are desired, two separate limit
lines must be defined and then both enabled.
●
The entered frequencies or times need not necessarily be selectable in
R&S
FPL1000. A limit line may also exceed the specified frequency or time range.
The minimum frequency for a data point is -200 GHz, the maximum frequency is
200 GHz. For the time range representation, negative times may also be entered.
The allowed range is -1000 s to +1000 s.
Display and Limit Lines
