Triggering On A Parallel Bus - Tektronix DPO70000C/DX Series User Manual

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 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.

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,
Setting up a bus.) Select Trig > A Event
(Main) Trigger Setup....
2. Select the A Event tab.
3. Select the Bus Trigger Type.
4. Select the bus to trigger on.
NOTE. Clocked buses will only appear in
the drop down list if the clock source is set
to Ch4.
78 MSO/DPO70000DX, MSO/DPO70000C, DPO7000C, and MSO/DPO5000 Series User Manual