LJD Digital Security Colossus Pro User Manual page 99

tool for RJ45, one electric iron, and some soldering tin.
Pin definition
To make the RJ45 according to the following pin definition; I means DVR input, O means
DVR output.
Pin index
1
2
3
4
5
6
7
8
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:
(2) When the serial port of the DVR is connected with DTE device with DB9 plug-in, the
corresponding relationship is as follows:
LJD Digital Security Ltd
Copyright © 2005. All rights reserved.
User Manual for COLOSSUS Series Embedded Net DVR
Name I/O
DCD I
RxD I
TxD O
CTS I
RTS O
DTR O
GND
Null
—
Connection for RJ45 and DB25 (DTE)
Description
Carrier Detect
Receive Data
Transfer Data
Clear Data
Request to Send
Terminal Device Ready
Ground
—
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