daendy

Hey everyone, I recently got ahold of a DVR and camera but for the life of me I can't figure out how to reset it (the camera) It's an old 15-CD53 and I was able to communicate with it thru rs485 but I can only steer it left/right/down/up no zoom/iris/preset is working and that's why I can't use OSD menu to reset it. I tried everything, some guides suggested to short pins and I did short the M pins for 30sec, 1min and nothing happens. Any bit of help is apprieciated