Dahua SD22204DB-GC, Installation Manual

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V
Table of Contents
Foreword ........................................................................................................................................................................................................I
Important Safeguards and Warnings ............................................................................................................................................ III
1 Installation Preparation .................................................................................................................................................................... 1
1.1 Basic Requirements .................................................................................................................................................................. 1
1.2 Installation Check ...................................................................................................................................................................... 1
1.3 Cable Preparation ...................................................................................................................................................................... 1
1.3.1 Video Cable Requirements ........................................................................................................................................ 1
1.3.2 RS-485 Cable Requirements ...................................................................................................................................... 2
1.3.3 Selecting Power Cable .................................................................................................................................................. 2
1.3.3.1 Power Cable ............................................................................................................................................................ 2
1.3.3.2 PoE Power Cable ................................................................................................................................................... 3
2 Cables ......................................................................................................................................................................................................... 4
2.1 Cable Description ...................................................................................................................................................................... 4
2.2 Cable Connection ....................................................................................................................................................................... 5
2.2.1 Alarm Cable Connection ............................................................................................................................................. 5
2.2.2 Thunder-Proof Cable Connection ........................................................................................................................... 6
2.2.2.1 Outdoor .................................................................................................................................................................... 6
2.2.2.2 Indoor ........................................................................................................................................................................ 8
3 RS-485 Cable ......................................................................................................................................................................................... 10
3.1 Basic Features ............................................................................................................................................................................ 10
3.2 Common Issues in Use ........................................................................................................................................................... 10
3.3 FAQ on RS-485 Cable ............................................................................................................................................................. 11
4 Wi-Fi Performance .............................................................................................................................................................................. 12
5 Cable Diameter (24V AC) and Transmission Distance ...................................................................................................... 13
6 Cable Diameter (12V DC) and Transmission Distance
...................................................................................................... 14
7 Cable Diameter (24V DC) and Transmission Distance ...................................................................................................... 15
8 Cable Diameter (30V DC) and Transmission Distance ...................................................................................................... 16
9 Cable Diameter (36V DC) and Transmission Distance ...................................................................................................... 18
10 Wire Gauge Reference Sheet
...................................................................................................................................................... 20
Appendix 1 Cybersecurity Recommendations ........................................................................................................................ 21