Rohde & Schwarz FPL1000 Series, User Manual

Page: 411 / 899

The Spectrum Application (RF Measurements)
R&S
®
FPL1000
411 User Manual 1178.3370.02 ─ 03
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 411).
Remote command:
TRIG:SOUR EXT
,
TRIG:SOUR EXT2
See
TRIGger[:SEQuence]:SOURce
on page 665
SWE:EGAT:SOUR EXT
for gated triggering, see
[SENSe:]SWEep:EGATe:SOURce
on page 668
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.
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 665
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.
This trigger source is only available for RF input.
The available trigger levels depend on the RF attenuation and preamplification. A refer-
ence level offset, if defined, is also considered.
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 665
SWE:EGAT:SOUR IFP
for gated triggering, see
[SENSe:]SWEep:EGATe:SOURce
on page 668
Time ← Trigger Source
Triggers in a specified repetition interval.
Remote command:
TRIG:SOUR TIME
, see
TRIGger[:SEQuence]:SOURce
on page 665
Trigger Level
Defines the trigger level for the specified trigger source.
For gated measurements, this setting also defines the gate level.
For details on supported trigger levels, see the data sheet.
Trigger and Gate Configuration