User manual

5/12

52WS/4

Back panel:

Interface Instruction (From left to Right in return):

1. Power jack is connected with 12V direct current through voltage stabilizer; Please use the stabili-

zer power supply correctly;

2. UTP network connector;

3. 4 external alarm input and 2 relay output;

4. Standard RS-485 serial port RJ45 socket and Standard RS-232 serial port RJ45 socket;

5. 4 channels video input and audio input;

6. One line in audio input

7. One audio output.

2.3 The pin definition of physics interfaces

2.3.1 PIN definition of RS-232 serial interface

The DVS has one RS232 standard serial interface, with RJ-45 connector. Its pin definition is as follows

(‘I’ means input, and ‘O’ means output):

(1) When the RS232 interface of the DVS connects with the DTE equipment, one end of the cable is the

8-pin RJ45 connector (to DVS) and the other of the cable is the DB25 female connector (to DTE). Below

is the description of the internal connection between RJ45 and DB25.

Pin No Name I/O Explanation

1 DCD I Carrier Detect

2 RxD I Receive

3 TxD O Transmit

4 CTS I Clear send

5 RTS O Request to send

6 DTR O Data Terminal Ready

7 GND GND

Table 2.1 Pin definition of RS232 serial port

12 3 4