Question:
- Ace camera triggering in is PNP type and SCOUT/Pilot will be NPN type? - For SCOUT/Pilot camera, do you use SINKING or SOURCING circuit? 


Answer:
- acA camera input is PNP transistor and output is NPN.

- For scout output is PNP transistor.
- NPN = sinking circuit, PNP = sourcing circuit.