Installation / User’s Guide
14
Notice
1. Video
signal’s
transmission distance is 300m by using coaxial-cable. Please
use video compensator or optical cable transmission facilities. When distance
is required conger than 300M.
2. Please use twisted-pair wire for RS-485 data transmission.
3. If RS-485 transmission distance is further than 1200m, please use signal
repeater or signal distributor.
4. One RS-485 line can only accommodates 32 speed domes at most. If the
number is more than 32, please use signal distributor to expand.
5. Cabling at RS-485 should use linear connection (daisy link). If for star linking,
please use signal distributor.
6. Cabling at RS-485 should be kept away from high-voltage wire, electromotor
etc. to avoid disturbance or interference.
