
12
AT4808 User's Guide
1.
USB Interface, used to save data
2.
Mini-USB Communication Interface, used to realize telecommunications
3.
RS485 extended interface
4.
External power and charger interface
3.3
Use an External Power Supply
Configured AC Adaptor ATL909
In addition to provide power to the instrument, it also charges to Li-Battery of the instruments. Please use our
Configured AC Adapter L909, do not replace.
Figure 3
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3 Connection of External AC Adapter to the instrument
Input the AC Adapter to the jack socket in the instrument
3.3.1
Battery Charging Function
If the battery power is not full, after plug in the power adapter, the charging circuit of the instrument will
automatically start with charging for the internal lithium battery, the build-in indicator of the power switch will
be lighted, indicating charging state. Unless the power is full, the indicator is still lighting, even the instrument
is turn off
Figure 3
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4
Indicator is blue while charging