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QSC26404 User’s Manual
83
Appendix C: DVR Connect Cable
Definition
1 How to Make a RS-232 Connect Cable
Material and tool
One twist cable (8 pins), one standard RJ45 connector and one special tool for RJ45.
RJ45 introduction
Pin definition
Make the connect cable according the following; to left point of RJ45 head, 1
st
and 2
nd
cables
are the anode and cathode line for sending, 3
rd
and 4
th
cables are the anode and cathode line for
receiving, 7 is the shared grounding line:
Pin definition for Standard RS-485 serial port RJ45 plug-in
2 How to Make a UTP network Connect Cable
Material and tool
One twist cable (8 pin, the length can be whatever is needed up to 100m), 2 standard RJ45 heads,
one tool for RJ45.
Suggestion: have a network cable test tool to test each cable made.
Pin definition
To make the network cable according to your actual needs there are two options:
(1) Use the following method to make the network cable when DVR is connected to a
network hub or switch.