How to connect a PTZ camera to a DVR?
To connect a PTZ camera to a DVR, you need three cable pairs: coax for video, twisted pair for the RS485 command interface, and the power supply. The twisted pair should be at least 22 Gauge, and if these cables are to be installed outdoor or there are electrical appliances nearby, please make sure they are shielded in conduits. Before you start the installation, please set the PTZ camera to the appropriate protocol, baud rate, and camera ID, e.g. Pelco “D”, 2400bps, camera ID 1,2,3,,,,etc. Of course, all PTZ camera IDs on the same system has to be distinct. Then set up the DVR software to match your camera settings, and to map the camera inputs with the corresponding IDs. If you are installing multiple PTZ cameras on one DVR system, please be careful of the wiring scheme for RS485 interface. There are two ways: 1. Star network: all twisted pairs would run from one interface converter (RS-1, RS2, GV net) direct to the PTZ cameras. Please sure that the polarity for the twisted pair is r
