Previously my project had two Hitachi camera(http://www.hitachi-kokusai.co.jp/global/en/products/tv/download/gige/pdf/KP-F_D_XXGV_OperationManual_E.pdf).
I had connected triggering pin 8 and 9 of camera using following circuit.Both the cameras were connected in parallel and power supply was DC 12V.
Both the cameras were getting triggering in this circuit. Now when I have added additional 2 cameras so in total 4 cameras(parallel connection) none are getting triggered.
Suggestion please. Doing it for first time so even if I missed some basic stuff pardon me.
mosfet used was (http://www.irf.com/product-info/datasheets/data/irlz34n.pdf)