I plan on triggering the 7100 from an external source. The manual indicates a 5 ma signal from 3-12 volts will trigger. My question is if I have a 12V source triggering thru an NPN, should I put a 2K resistor in series with the collector to limit the current? Also, is it a relay or photodiode? If it's a relay I need a diode to protect from an inductive spike. What'd be really nice is a circuit model of what the load looks like.
Thanks...