Qvis APOHD-PTZ20 User Manual page 6

9.2 Login and Logout ............................................................................................................................................... 27
10 APPENDIX ABOUT RS485 BUS ........................................................................................... 30
10.1 RS485 Bus Main Feature ................................................................................................................................... 30
10.2 RS485 Bus Transmission Distance ................................................................................................................... 30
10.3 The Problem in Practical Use ............................................................................................................................ 30
10.4 RS485 Bus FAQ ................................................................................................................................................. 31
6 FAQ ........................................................................................................................................... 32
10.5 Daily Maintenance ............................................................................................................................................ 32
10.6 Problems and Solutions .................................................................................................................................. 32
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