Hi AV,
It sounds to me that you'll just want to setup
an Analog Input Task with a start trigger, with the DAQmx start trigger
also configured. Additionally, you'll create an analog output task to
output the supply voltage (you can share the timing with your analog
input task for the video input). There's an example here,
but you may have better luck using one of the NI Example Programs
(Help»Find Examples...). I would recommend taking a look at some of
the synchronization examples if you're looking to have your AI and AO
synchronized. Particularly, you may want to check out
"Multi-Finction-Synch AI-AO.vi". Let me know if you have more specific
questions, or if I've misunderstood your application. Thanks!
