Pinpoint triggers
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 In
fi
nite 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.
Triggering on a parallel bus
Locate problems by triggering on a parallel bus. MSO instruments can use digital channels as components of a parallel bus.
1.
Set up a parallel bus. (See page 53,
.) Select
Trig > A Event
(Main) Trigger Setup...
.
2.
Select the A Event tab.
80
MSO/DPO70000DX, MSO/DPO70000C, DPO7000C, and MSO/DPO5000B Series User Manual
