Getting Started > Cameras > QImaging Camera Trigger Inputs
QImaging cameras can be externally triggered via a TTL digital or a 5V analog output signal applied to the 6 pin mini DIN external trigger port connector on the rear of the camera. The specific pins to which the signal is applied depends upon whether the camera uses an optocoupled trigger input (most QImaging cameras) or not (QI-Click, Rolera MGIFast).
Optocoupled trigger inputs: The trigger signal must be connected to pin 1 (signal) and 2 (ground).
Non-Optocoupled trigger inputs: The trigger signal must be connected to pin 2 (signal) and 6 (ground).
Consult Appendix A of your camera's user manual to determine which type of trigger input your camera uses. Cameras with optocoupled trigger inputs will have a connection (+5VDC power for optocoupler) specified for pin 1, in Table 2. Cameras with non-optocoupled triggers do not make use of pin 1 and a connection will not be listed in Table 2.
A suitable plug (Singatron Enterprises part no. 62000-EP) for connecting to the camera trigger input socket can be obtained from Digikey (www.digikey.com). The pin out of the 6 pin mini DIN plug is shown below (viewed from rear of plug).