78
11.1.3 Configuration Diagram III – Multiple System Configuration (Multi Cameras, Multi DVRs)
Please make sure to connect “Tx to Rx “or “Rx to Tx” with positive polarity. (+ to +) and (- to -)
11.2
Keyboard Setup in DVR
y
Enter “Setup>SYSTEM>Information: System ID” and define the ID of DVR
y
When user connects more than two DVRs then each DVR has to have a different ID.
y
Then move to “Setup>Device>Camera/PTZ: Keyboard” and select CP1200A
y
Then, choose PTZ protocol and Camera ID
Tx+
Tx- Rx+ Rx-
DVR 1
RS485
+
RS485
Tx1
Tx1
Tx2
Tx2
Tx3
Tx3
TRx
TRx
Tx+
Tx-
Rx+
Rx-
DVR 2
Tx
+
Tx
-
Tx
+
Tx
-
Tx+
Tx-
Tx+
Tx-
…
…
Max 16 DVR
RS485
+
RS485
Tx+
Tx- Tx+
Tx-
Tx+
Tx-
Tx+
Tx-
Max 16 camera
… …
Multi port
… …
Rx+
Rx-
Rx+ Rx-
Rx+
Rx-
Multi port
Rx+
Rx-
Rx+
Rx-
Rx+
Rx-