So I have a fluke 177. I did the manual 600mv AC Hz and read it as toggling between 1224 and 1232. When it starts losing it's mind again I read roughly 971Hz steady. I checked my other two cars and got the toggling of 1224-1232 even while car 1 freaks out. So where I'm at now is, I know I'm losing my RSL, but why? I've replaced and swapped every board except the drive, I've checked all my wiring, all my remote stations, and completely removed my group communication and the shaft, but nothing has changed. Could it be software related?
