Tektronix TDS5054, User Manual

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Triggering
TDS5000 Series User Manual
3- 93
Triggering with Horizontal Delay On.
You can use horizontal delay when you want
to acquire a waveform record that is separated from the trigger event by a
significant interval of time. The horizontal delay function can be used with any
trigger setup. You can turn horizontal delay on and off from the front panel, the
Horizontal/Acquisition control window, and many of the Trigger control
windows. Figure 3--27 compares the sequential trigger choices A Only, Trig
After Time, and Trig on nth Event when horizontal delay is on. Each illustration
shows where pretrigger and posttrigger data is acquired relative to the trigger
event.
Horizontal delay
Horizontal delay
A trigger point
Start posttrigger acquisition
A trigger
source
Waveform record
A (Main) Only with
Horizontal Delay
Pretrigger record
Posttrigger record
Waiting for nth event
(where n=4)
Trig on nth Event
with Horizontal Delay
A trigger
source
B trigger
source
Waveform record
A trigger point
Start posttrigger acquisition
Horizontal delay
Trigger delay time
Trig After Time with
Horizontal Delay
A trigger
source
B trigger
source
Waveform record
A trigger point
Start posttrigger acquisition
B trigger point
B trigger point
Figure 3- 27: Triggering with Horizontal Delay on