Altina GPS GBT 709 - Manual (Page 9)

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4.4. Power Switch
Ø
1 : Power on
Ø 0 : Power off
4.5. Optional accessories, and connector description
PC/Notebook
USB port
PC/Notebook
RS232 port
USB Cable
(GAC60U2)
RS232 Cable
(GAC60R2)
Mini USB