Boscam HD19 help

[pheasant_plucker]

Asking for a friend.

The HD19 has a trigger wire. Does anyone know what the trigger signal should be?
Is it positive or negative,  is it a pwm trigger etc.
Any help is greatly appreciated.

Gerry

[Biffa]

According to this it';s just a PWM signal http://www.rcgroups.com/forums/showthread.php?t=2128928

[pheasant_plucker]

Thanks that';s just what he needs to know.

Gerry