Stanford Research Systems SR780, Operating Manual And Programming Reference

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Trigger Menu 4-87
SR780 Network Signal Analyzer
Trigger Slope
Select the Trigger Slope [Rising, Falling]. The Trigger Slope applies to Ch1, Ch2,
External and Ext TTL Trigger Sources.
Command: TSLP (?) {i}
Delay A
Set the Trigger Delay for DisplayA [-8000..100000]. The Trigger Delay applies only to
FFT measurements. The Trigger Delay is specified in samples (1/sampling rate) of the
time record.
The triggered time record does not have to start with the trigger event. The time record
can start before the trigger (negative delay) or after the trigger (positive delay). A delay
of 0 starts the time record at the trigger. The Trigger Delay does not apply if the Trigger
Mode is Free Run.
When a large trigger delay is used, the display may update slower since the acquisition
time for each record (time record length plus trigger delay) is noticeably long.
Auto Arm Trigger Mode re-arms the trigger after both FFT displays have completed
processing their time records.
Command: TDLA (?) {i}
Delay B
Set the Trigger Delay for DisplayB [-8000..100000]. The Trigger Delay applies only to
FFT measurements. The Trigger Delay is specified in samples (1/sampling rate) of the
time record.
The triggered time record does not have to start with the trigger event. The time record
can start before the trigger (negative delay) or after the trigger (positive delay). A delay
of 0 starts the time record at the trigger. The Trigger Delay does not apply if the Trigger
Mode is Free Run.
When a large trigger delay is used, the display may update slower since the acquisition
time for each record (time record length plus trigger delay) is noticeably long.
Auto Arm Trigger Mode re-arms the trigger after both FFT displays have completed
processing their time records.
Command: TDLB (?) {i}