User Manual

The Spectrum Application (RF Measurements)
R&S
®
FPL1000
337User Manual 1178.3370.02 ─ 09
External Trigger 1 ← Trigger Source
Data acquisition starts when the TTL signal fed into the trigger input connector of the
R&S FPL1000 meets or exceeds the specified trigger level.
(See "Trigger Level" on page 337).
Remote command:
TRIG:SOUR EXT
See TRIGger[:SEQuence]:SOURce on page 785
SWE:EGAT:SOUR EXT for gated triggering, see [SENSe:]SWEep:EGATe:SOURce
on page 788
Video ← Trigger Source
Defines triggering by the video signal, i.e. the filtered and detected version of the input
signal (the envelope of the IF signal), as displayed on the screen.
Define a trigger level from 0 % to 100 % of the diagram height. The absolute trigger
level is indicated by a horizontal trigger line in the diagram, which you can also move
graphically to change the trigger level.
A fixed hysteresis of 10 % of the specified trigger value (in V) is applied to the video
trigger level automatically and cannot be changed.
Video mode is only available in the time domain, and not for I/Q-based data.
Remote command:
TRIG:SOUR VID, see TRIGger[:SEQuence]:SOURce on page 785
IF Power ← Trigger Source
The R&S FPL1000 starts capturing data as soon as the trigger level is exceeded
around the third intermediate frequency.
For frequency sweeps, the third IF represents the start frequency. The trigger band-
width at the third IF depends on the RBW and sweep type.
For measurements on a fixed frequency (e.g. zero span or I/Q measurements), the
third IF represents the center frequency.
This trigger source is only available for RF input.
For details on available trigger levels and trigger bandwidths, see the data sheet.
Note: Be aware that in auto sweep type mode, due to a possible change in sweep
types, the trigger bandwidth can vary considerably for the same RBW setting.
Remote command:
TRIG:SOUR IFP, see TRIGger[:SEQuence]:SOURce on page 785
SWE:EGAT:SOUR IFP for gated triggering, see [SENSe:]SWEep:EGATe:SOURce
on page 788
Time ← Trigger Source
Triggers in a specified "Repetition Interval" on page 338.
Remote command:
TRIG:SOUR TIME, see TRIGger[:SEQuence]:SOURce on page 785
Trigger Level
Defines the trigger level for the specified trigger source.
Trigger and Gate Configuration