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3.2 TRIGGERS
Both ECL and TTL triggers are supplied through the VX402C-64. There are switches on the
carrier which are used to set the direction of the triggers (to the backplane and from the
backplane).
3.2.1 TTL TRIGGERS
Eight TTL Trigger lines pass through the VX402C-64 to the front panel: TTLTRG0-7. Each
trigger line may be set as an input or output trigger. The trigger direction is set using switch S1
which can be seen in Figure 6. The directions are also clearly marked on the board itself.
`
J1
J2
P1
P2
S1
FROM
BACKPLANE
TO
BACKPLANE
S1
TTLTRG
ON
TTLTRG0
TTLTRG1
TTLTRG2
TTLTRG3
TTLTRG4
TTLTRG5
TTLTRG6
TTLTRG7
1
Figure 6. TTL Trigger Direction
C&H Technologies, Inc. <> 445 Round Rock West Drive <> Round Rock, TX 78681 <> www.chtech.com