Tektronix MTM400 - Manual (Page 145)

Triggered Recording
3-100 MTM400 MPEG Transport Stream Monitor User Manual
Triggered Recording Settings
The Settings section of the Triggered Recordings dialog is used to set up the
trigger event, including the pre-trigger properties and the amount of memory to be
reserved for the recording.
Trigger Type The event that triggers the recording can be one of four types,
selected from the drop-down list.
Immediate
The trigger is set as soon as Arm Trigger is selected on the
Operations section; in effect, recording will start immediately.
External Rising Edge / External Falling Edge
The trigger is set when Arm Trigger has been selected on the
Operations section. Recording will start when a rising / falling
edge is detected at the TTL input on the TS Processor, Alarms
connector (see the MTM400 Technical Reference for
specifications).
Event Alarm
The trigger is set when Arm Trigger has been selected on the
Operations section. Recording will start when an error occurs
on an event that has been flagged in the Tests or Custom views.