1269 User Manual
Using The Enhanced Monitoring System 4-23
TTLT7
NONE
INP
The Default state for this command is “NONE”.
Programming a
Trigger Delay Time
A delay time may be added between:
1)
The TRIG IN input and the selected TTLTRGx
line, OR
2)
The TTLTRGx line and the TRIG OUT output, OR
3)
The TRIG IN input and the TRIG OUT output
The trigger delay time ranges from 0.0 to 1.04857596875
seconds in steps of 31.25 nanoseconds. To program a delay
time, the command:
VXI:CONF:MONITOR:TRIG:DELAY
<delay time>
where “<delay time>” ranges between 0.0 and 1.04857596875.
NOTE
When the trigger delay is non-zero, the trigger
pulse is generated from the 1269 EMS. It is not
identical to the trigger signal applied to the input
(or from the TTLTRGx line). The trigger pulse is
approximately 100 nanoseconds wide and is a low-
going (normally high) pulse.
NOTE
The EMS trigger delay circuit adds a delay between
the input and output pulses. This delay is between
31.25 ns and 62.5 ns (typical, 100 ns maximum).
The present delay time may be read back with the query:
VXI:CONF:MONITOR:TRIG:DELAY?
The reply to this query is a numeric value formatted as a real
number.
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