MGL Avionics User Forum

On the RPM2 there are two sensitivity set screws on the back of the unit, one for Rotor and one for Engine. My engine tachometer display jumps around at high RPMs from 105% down to 40%. Will adjusting the set screw fix this issue? How much do I turn it, and which way? Anybody know? The documentation...

My MGL RPM-2 quit working on the Engine side. Shows zero RPM throughout operating RPMs. Rotor side works fine. I checked the connections, all look good. Did try to adjust the sensitivity on the back and noticed this adjust screw just turns with no resistance. Anybody have and troubleshoot tips?

Has anyone found a way to attach an audio alarm to the RPM 2? I have successfully attached a blinking warning light, but I would also like to attach a warning horn or buzzer. With only one wire coming from the RPM 2, I am having trouble finding a audio alarm that will work. Any suggestions or part n...

Thanks

The RPM-2 instructions state the alarm wire is an “open collector switch to ground”. Does this mean the light I attach should have a separate power source and the RPM-2 provides the ground when activated or does the RPM-2 provide the power to the light?