Triggering the Sweep - Analyzer R&S ESCI
1166.6004.12 4.96 E-1
The gated-sweep mode is activated by the GATED TRIGGER softkey. The setting of the mode takes
place in the GATE SETTINGS submenu.
GATED
TRIGGER
The GATED TRIGGER softkey switches the sweep mode with gate on and
off.
When gate is switched on, a gate signal applied to the rear panel connector
EXT TRIGGER/GATE or the internal IF power detector controls the sweep of
the analyzer. This selection is made via the EXTERN and IF POWER
softkeys for trigger and gate.
The length of the gate signal defines when the sweep is to be interrupted.
Here a differentiation is made between edge-triggered and level-triggered
modes: in case of edge triggering the gate length can be set via the GATE
LENGTH softkey, while in case of level triggering the gate length depends on
the length of the gate signal.
RF
Ext. Gate
Meas. active
Delay
Length
Gate Mode LEVEL Gate Mode EDGE
Delay
Fig.4-11 Timing diagram for GATE, GATE DELAY and GATE LENGTH
This softkey requires the EXTERN or IF POWER trigger mode. If a different
mode is active, IF POWER is automatically selected.
Gated-sweep operation is also possible in the time domain. This enables -
e.g. in burst signals - level variations of individual slots to be displayed versus
time.
To indicate that a gate is used for the sweep, the enhancement label GAT is
displayed on the screen. This label appears to the right of the window for
which the gate is configured.
IEC/IEEE-bus command: SWE:EGAT ON
SWE:EGAT:SOUR IFP
or:
SWE:EGAT:SOUR EXT
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