3.3 RS-485 match resistance application
In order to get one good RS485 control, to avoid the reflection and disturbance of RS485 communicat-
ion signal or other signal, one terminal match resistance is needed on the last dome camera. Please make
the ten switch dail to
ack panel.
“ ON “ on the b
Controller
RS-485 terminal match resistance ON
Terminal match
resistance OFF
Terminal match
resistance OFF
Terminal match
resistance OFF
Notice
Please make sure the dome connects into voltage,use the acces-
sory power.
Please make sure the anode and cathode of RS-485 accurate to
avoid the dome can not be controlled.
5
Connection & Setup
RS485 Bus marching resister
To the application of system center control, in order to prevent
the reflection and interference of RS485 signal and other
communication signals, the communication port of farthest equipment
from control center should parallel connected with one marching
resister.