Triggering The Scan - Trig Key - R&S ESU Series Operating Manual

R&S ESU
CONT AT HOLD With the CONT AT HOLD softkey the scan is continued where it was interrupted.
The scan is always continued with the settings in the scan table.
Remote command:
STOP SCAN The STOP SCAN softkey stops the scan. Upon restart, scanning starts at the begin-
ning. The results of the performed measurements are lost.
Remote command:
4.5.6 Triggering the Scan – TRIG Key
The TRIG key opens a menu for selection of the trigger sources and the trigger
polarity. The active trigger mode is indicated by highlighting the corresponding soft-
key.
To indicate that a trigger mode other than FREE RUN has been set, the enhance-
ment label TRG is displayed on the screen. If two windows are displayed, TRG
appears next to the appropriate window.
TRIG
FREE RUN
VIDEO
EXTERN
POLARITY POS | NEG
FREE RUN The FREE RUN softkey activates the free-run sweep mode, i.e. start of a scan is not
triggered. Once a measurement is completed, another is started immediately.
FREE RUN is the default setting of R&S ESU.
Remote command:
VIDEO The VIDEO softkey activates triggering via the displayed voltage.
For the video triggering mode, a level line showing the trigger threshold is displayed.
Using the level line, the threshold can be adjusted between 0% and100% of the dia-
gram height.
Remote command:
EXTERN The EXTERN softkey activates triggering via a TTL signal at the input connector
EXT TRIGGER/GATE on the rear panel.
Remote command:
POLARITY
The POLARITY POS/NEG softkey selects the polarity of the trigger source.
POS | NEG
The scan starts after a positive or negative edge of the trigger signal. The selected
setting is highlighted.
The selection is valid for all trigger modes with the exception of FREE RUN.
The default setting is POLARITY POS.
Remote command:
Operating Manual 1302.6163.12 - 03
--
:ABOR
TRIG:SOUR IMM
TRIG:SOUR VID
TRIG:LEV:VID 50 PCT
TRIG:SOUR EXT
TRIG:SLOP POS
Instrument Functions
Receiver Mode
4.63