8 Trigger
8.2 Gate Source
8.2 Gate Source
Contains controls that let you select and configure Gate control signals.
This tab appears in the Trigger menu panel for measurements that support gating.
In measurements that do not support gating, this tab does not appear.
The menus under the Gate Source tab are the same as those under the Trigger tab,
with these exceptions:
A smaller set of sources is available for gating.
The Free Run and Video selections are not provided for Gate
–
The Trig Delay controls are not present
–
Relative RF Burst Triggering is not available, just Absolute
–
There is an additional control, Sync Holdoff, under Gate Source
Any changes to the settings in the setup menus under each Gate Source selection
(for example: Trigger Level, Trigger Delay, etc.) also affect the corresponding
settings under the Trigger menu keys. The gate system uses the Trigger SCPI
commands for the setup functions, since each setting affects both Gate and Trigger.
Example: to set the Trigger Level for External 1 Trigger you use the command
:TRIG:EXT1:LEV; to set the Trigger Level for External 1 Gate you use the same
command, :TRIG:EXT1:LEV. By the same token, once you set the External 1
Trigger Level to 1v, it is 1v whether External 1 is being used as a Gate Source or a
Trigger Source.
If a command is sent to the TRIG node to set the functions that are omitted from the
Gate Source menus (Auto Trig, Holdoff, Trig Delay), it is accepted and the values
stored, but the values are not visible from the Gate Source menus.
8.2.1 Select Gate Source
Selects the source of the Gate signal for doing Gated Trigger measurements.
This version of the Select Gate Source function is used in all measurements except
the Pulse measurement application.
For the selection of the gate source the SCPI node, :TRIGger[:SEQuence]: is
replaced by [:SENSe]:SWEep:EGATe: as shown in the remote command below.
Because you can independently set the Gate Source and the Trigger Source, there is
a separate SCPI command for the Gate Source.
Remote Command
[:SENSe]:SWEep:EGATe:SOURce EXTernal1 | EXTernal2 | LINE | FRAMe | RFBurst
Short Range Comms & IoT Mode User's &Programmer's Reference 2362
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