Photron FASTCAM Multi, Hardware Manual

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Chapter 4 Functions
32
4.2.2. Outputting External Trigger Signals
With the system, you can externally output trigger signals. Output is performed with the TRIG TTL
OUT connector's dedicated trigger output system provided by the system, and additionally, output
can also be optionally set from the GENERAL OUT connector. External trigger signal output settings
are also made by PFV, selecting [TRIG TTL OUT] or [GENERAL OUT] from [Camera Option]
– [I/O]
- [External Signal I/O Port].
Signal output is performed from the TRIG TTL OUT connector and the GENERAL OUT connector
explained in section
“2.3.6. I/O PORT Connector”.
The chart below summarizes the output systems and the signals that can be output.
Connector Name
(Output System)
Menu Setting Signal Type Delay Time
TRIG TTL OUT
TRIG POS
TTL, SW, SOFT, all TRIG pulse output
CMOS (74ACT541 buffer) output,
Positive Polarity.
For TRIG SW IN,
approx. 19.6 usec.
For TRIG TTL IN,
approx.
POS: 98 nsec.
NEG:107 nsec
TRIG NEG
TTL, SW, SOFT, all TRIG pulse output
CMOS (74ACT541 buffer) output,
Negative Polarity.
TTL IN
THRU POS
TRIG TTL IN through output
CMOS (74ACT541 buffer) output,
Positive Polarity.
For TRIG TTL IN
POS, approx. 49
nsec
For TRIG TTL IN
NEG, approx. 65
nsec
TTL IN
THRU NEG
TRIG TTL IN through output
CMOS (74ACT541 buffer) output,
Negative Polarity.
GENERAL OUT
TRIG POS
TTL, SW, SOFT, all TRIG pulse output
CMOS (74ACT541 buffer) output,
Positive Polarity. For TRIG SW IN,
approx. 19.6 usec.
For TRIG TTL IN
GENERAL IN,
approx.
POS: 98 nsec.
NEG: 107 nsec
TRIG NEG
TTL, SW, SOFT, all TRIG pulse output
CMOS (74ACT541 buffer) output,
Negative Polarity
Signal cable condition: 50cm