I have noticed several diagrams showing only the Transmit or Receive wire connections between devices like GPS's and A/P's. I always assumed that I needed the serial ground for these connections, but I guess they are all attached to a common ground bus.
Do I need the ground connection when the devices do not have a dedicated serial ground connection point? I am guessing that if they are both using a common device/airframe ground that it doesn't matter.
I know that I need them for the RS-232 connections for computer connectivity.
Thanks for the help here.
Larry
Do I need the ground connection when the devices do not have a dedicated serial ground connection point? I am guessing that if they are both using a common device/airframe ground that it doesn't matter.
I know that I need them for the RS-232 connections for computer connectivity.
Thanks for the help here.
Larry