Dahua SD6980-HN - 4 MENU; 4.1 Screen Menu Index; 4.2 Self-diagnosis System Information; 4.3 Main Menu

4
7.1
7.17.1
7.1 RS485 Bus Main Feature
RS485 Bus Main FeatureRS485 Bus Main Feature
RS485 Bus Main Feature ................................................................................................................................ 39
7.2
7.27.2
7.2 RS485 Bus Transmission Distance
RS485 Bus Transmission DistanceRS485 Bus Transmission Distance
RS485 Bus Transmission Distance ................................................................................................................ 39
7.3
7.37.3
7.3 Connection Methods and Terminal Resistance
Connection Methods and Terminal ResistanceConnection Methods and Terminal Resistance
Connection Methods and Terminal Resistance ........................................................................................... 39
7.4
7.47.4
7.4 The Problem in Practical Use
The Problem in Practical UseThe Problem in Practical Use
The Problem in Practical Use.......................................................................................................................... 39
7.5
7.57.5
7.5 RS485 Bus FAQ
RS485 Bus FAQRS485 Bus FAQ
RS485 Bus FAQ ................................................................................................................................................ 40
8
88
8 APPENDIX TOXIC OR HA
APPENDIX TOXIC OR HAAPPENDIX TOXIC OR HA
APPENDIX TOXIC OR HAZARDOUS MATERIALS OR
ZARDOUS MATERIALS ORZARDOUS MATERIALS OR
ZARDOUS MATERIALS OR ELEMENTS
ELEMENTSELEMENTS
ELEMENTS ........................ 41