8 Trigger
8.2 Gate Source
| TV | VIDeo | PXI | INTernal
[:SENSe]:SWEep:EGATe:SOURce?
Example
:SWE:EGAT:SOUR EXT1
:SWE:EGAT:SOUR?
Dependencies Available selections differ depending on models as below
Benchtop Line, External 1, External 2, RF Burst, Periodic, TV (Swept SA only)
VXT Video, Internal, External 1, External 2, RF Burst, Periodic, PXI Internal and
Periodic are not available in Spectrum Analyzer Mode
–
Internal is available only in M9410A/11A/15A/16A and unavailable in
M9420/21A
EXM Video, Internal, External 1, External 2, RF Burst, Periodic
Not available in E7760
In some models, there is no second External input. In these models, the External 2 selection is not
shown and the EXTernal2 parameter will generate a “Hardware missing; Not available for this
model number” error
Preset GSM/EDGE, Phase Noise: FRAM
MSR: EXT1
LTEATDD, 5G NR:
–
Direction is Downlink: EXT1
–
Direction is Uplink: FRAM
All Others: EXT1
8.2.2 Sync Holdoff
Applies only to the Periodic Timer. Specifies the duration that the sync source signal
for the Periodic Timer must be kept false before the transition to true to be
recognized as the sync timing. The periodic timer phase is aligned when the sync
source signal becomes true, after the Holdoff time is satisfied.
A holdoff of 2 ms works with most WiMAX signals, but there may be cases where the
burst off duration is less than 1 ms and this value will need to be changed.
Remote Command
:TRIGger[:SEQuence]:FRAMe:SYNC:HOLDoff <time>
:TRIGger[:SEQuence]:FRAMe:SYNC:HOLDoff?
Example
:TRIG:FRAM:SYNC:HOLD 5
:TRIG:FRAM:SYNC:HOLD?
Dependencies Only appears if Periodic is the selected Gate Source
Does not appear in all Measurements. For example, does not appear in Swept SA
2363 Short Range Comms & IoT Mode User's &Programmer's Reference
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