Tektronix DPO7054, User Manual

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Pinpoint Triggers
9. Select the method that the B Event value
is incremented after the selected number
of acquisitions occur:
Sequential Scan increments by
1 until the End Event is reached.
When the End Event is reached, the
B Event value is reset to the Start
Event value and the process starts
over.
Random Scan sets the B Event
value to a random value between
the Start Event and the End Event
for each set of Advance After
acquisitions.
Toggle Between Events toggles
the B Event value between the Start
Event and the End Event for each
set of Advance After acquisitions.
10. In this example, a DDR3 DQS signal is
on Ch 1 and the DQ signal is on Ch 2.
The instrument is in Run Mode with
Display Mode set to Infinite Persistence.
The instrument trigger setup was as
follows:
A-Event Window trigger on Ch 1
to detect the DDR3 DQS Write
condition.
B-Event Edge trigger on Either slope
on Ch 1 to trigger on the DQS (clock)
edges.
A->B Sequence set to Trig on the
nth Event.
B Scan Enabled with Start Event
= 1, End Event = 8, and Mode =
Sequential.
The data eyes are formed by the DQ
signal on Ch 2.
MSO70000/C, DPO/DSA70000B/C, DPO7000, and MSO/DPO5000 Series User Manual 79