2-wire dc polarity reversing signal

[ashish1812]

Hi

Does anyone know what a 2-wire dc polarity reversing voltage signal is? I have never heard of this type of signal before. I have gone insane trying to google it but to no avail. Any sort of help will be much appreciated.

 

[berkeman]

Hi

Does anyone know what a 2-wire dc polarity reversing voltage signal is? I have never heard of this type of signal before. I have gone insane trying to google it but to no avail. Any sort of help will be much appreciated.

Welcome to the PF. Sounds like an AC signalling scheme to me. Where did you see it referenced?

 

[ashish1812]

I am an avionics engineer and an autopilot computer manual lists it as one of its outputs. It is a two-wire signal with "format" listed as "polarity reversing dc signal" and then it lists the scale of the signal as 300mV/deg...which i don't think is relevant.