Connection
2.4
Connect to a dome directly
The user can connect the keyboard to a dome via a
RS485 cable for direct control. Make sure that keyboard
DIP switches are set in the direct control mode. To find the
RS485 interface of the dome: The user needs to turn the
metal button inside the hanging plate and open the cover.
There is a 4-Pin control/power socket, and the RS485
interface (A+, B-) can be found following the instructions.
Dome cameras from different manufacturers may
acquire different connections. Please see to the dome
installation manual before connecting to the keyboard.
2.5
Connect to a DVR
The keyboard can be connected to a DVR and a dome
via RS422 interface. RS422 (R+, R-) on the keyboard can
connect RS485 (A+, B-) or RS485 (T+, T-) on the DVR and
RS485 (A+, B-) on the dome separately.
AC24V
RS485
A+ B-
RS485
RS422
A+ B- T+ T- R+ R-
Power AC/DC 9V-12V
Dome
Keyboard
Picture 2-4.1
AC24V
RS485
A+ B-
RS485
RS422
A+ B-
A+ B- T+ T- R+ R-
DVR RS485
Power AC/DC 9V-12V
Dome
Keyboard
Picture 2-5.1
