Trigger Functions - Vision VC nano Series Operating Manual

VC_nano_Series.pdf – VC nano Series Smart Cameras Operating manual

5.5 Trigger functions

Apart from the inverse TTL logic and the different status registers, the trigger works like with the
VC4XXX cameras.
Please refer to the VCRT5.pdf manual – available from the download area of the VC website.
To query the trigger input, use the following command, valid for all VC nano cameras (see demo
program trigin.c):
if (TRIGINP_PIN)
print("external trigger = 1\n");
else
print("external trigger = 0\n");
A capture can be triggered on rising edge with TRIGINP_POS() and on falling edge with
TRIGINP_NEG().
Signal
Trigger input
V
Trigger input
V
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TRIGINP_POS()
Threshold
Rising Edge Trigger Signal
t
TRIGINP_NEG()
Falling Edge Trigger Signal
Threshold
t
Trigger Mode
29