Tektronix DSA8300, Programmer'S Manual

Page: 52 / 455

Command Groups
Set the trigger source for triggering acquisition. You can select from the
following sources:
Clock Sources:
Clock Input/Prescale Trigger (front panel input).
Internal clock recovery sources.
TDR Clock.
Trigger Direct Input (front panel input).
Free Run.
For Clock Sources you can select one of three acquisition modes (Eye,
Pattern, or Other).
For Internal clock recovery sources you can set and query the clock recovery
data rate.
For TDR triggering you can set the trigger clock rate (25 - 300 kHz).
For Trigger Direct source you can do the following:
Set the signal level and slope (rising or falling) of the trigger.
Set the trigger level to 50% of the trigger signal amplitude.
Set high frequency triggering hysteresis for improved triggering in speci fi c
instances.
Set trigger holdoff, which is the time the instrument waits before arming the
trigger system to accept triggers. Holdoff can help achieve stable triggering.
Obtain all trigger parameters.
Obtain the trigger system status (triggered, not triggered, or stopped).
Set and query Pattern Autosync parameters (Pattern Length, Data Rate, Data
to Clock Ratio).
Initiate a Pattern Autosync.
Control and Query USB-attached clock recovery instruments (such as the
Tektronix CR125A, CR175A, or CR286A)
Command Description
AUTOSet:TRIGger Sets whether the trigger Autoset options are
included when autoset executes
Returns the status for the trigger Autoset
options
TRIGger? Returns all trigger parameters
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