TeleEye JN6400 User Manual page 15

Introduction
RS485 Connection
There are two types of RS485 interfaces:
Type 1: The P/Z interfaces are used to connect speed dome. K/B interfaces are used to connect
keyboard.
Type 2: The RS485 interfaces are not only used to connect speed dome but also to connect
keyboard.
The way to connect speed dome to the DVR:
Type 1: Disconnect pluggable block from the RS485 terminal block and then loosen the fixed
screws from the pluggable block, insert signal cables into Y and Z port separately (Y is TX+; Z
is TX-) and tighten the fixed screws. Next, connect pluggable block back into terminal block.
Finally, connect the video cable of the speed dome to the video input interface of the DVR.
Type 2: Disconnect pluggable block from the RS485 terminal block and then loosen the fixed
screws from the pluggable block, insert signal cables into A and B port separately (A is TX+; B
is TX-) and tighten the fixed screws. Next, connect pluggable block back into terminal block.
Finally, connect the video cable of the speed dome to the video input interface of the DVR.
Note:
The pluggable block of some models may not be connected into the terminal block and you shall obtain it
from the accessories.
（Type 1） （Type 2）
9
DVR User Manual