Q-See QSC26416 Manual do Utilizador descarregar pdf (Página 109)

User Manual for Commercial Series Net DVR

Page 109 Total 121

3 How to make a RS-232 connect cable

Material and tool

One twisted cable (8 pins), one standard RJ45 head, one or more DB25 or DB9 plug-ins, a

tool for RJ45, one electric iron, and some soldering tin.

Pin definition

Make the RJ45 according to the following pin definition; I means DVR input, O means DVR

output.

Pin index Name I/O Description

1 DCD I Carrier Detect

2 RxD I Receive Data

3 TxD O Transfer Data

4 CTS I Clear Data

5 RTS O Request to Send

6 DTR O Terminal Device Ready

7 GND Ground

8 Null

— —

According to demand, the following three situations are considered to make the serial port

plug-in according to the corresponding relationship of the pin definition.

(1) When the serial port of the DVR is connected with the DTE device with DB25 plug-in

(terminal like computer, annunciator, door access etc), the corrresponding relationship is as

follows:

1 2 ... 104 105 106 107 108 109 110 111 112 113 114 ... 120 121

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Q-See QSC26416 Manual do Utilizador Página 109