Q-See QSD42908 Appendix C DVR Connect Cable Definition, How to Make a RS-485 Connect Cable

Models: QSD42908

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QSD42908 User’s Manual

Appendix C: DVR Connect Cable

Definition

1 How to Make a RS-485 Connect Cable

Material and tool

One twist cable (8 pins), one standard RJ45 connector and one tool special for RJ45.

RJ45 introduction

Pin definition

Make the connect cable according the following; to left point of RJ45 head, 1st and 2nd cables are the anode and cathode line for sending, 3rd and 4th 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

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Page 93
Image 93
Q-See QSD42908 user manual Appendix C DVR Connect Cable Definition, How to Make a RS-485 Connect Cable, Material and tool