Intelligent Dome Camera (6400AK Series) User Manual
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lines. Single-wire earthed lightning ground locking in customers’ external line
lightning ground screw, and pick the Lightning to take the press to an external line
lightning protection ground terminal.
（
As picture 2
）
PIC 2
Appendix
Ⅱ：
Cleanness of Transparent Cover
◎
To ensure the image quality, the lower cover of the dome camera
should be cleaned periodically
◎
When cleaning, take the lower cover down by holding the outer ring
carefully, avoiding direct touch; the acidic sweat on one’s finger might corrode
the coating of the cover. And the scratches made by hard objects might also
result in a blurry image.
◎
Please use a tender dry cloth or other substitutes to clean both the inner
and outer side of the cover.
◎
If the dirt is hard to clean, a neutral detergent could be used; any
cleanser which is for luxury furniture can be used for the lower cover.
Appendix
Ⅲ：
General Knowledge of RS485
1. Basic Characteristics of RS485
According to its standard, RS485 industrial bus is a half-duplex C-bus of
