RoyalTek GPS Receiver RGM-2101/RGM-3000/REB-12R REV-2000 Operational Manual
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(3) Connecting the RS-232 cable between
REV-2000 P1 and PC.
(4) Plug the power adapter. (or connecting the
DC power input, 6.5V ~ 12V)
After you finish setup, it is like as follows:
COM port
AC power
COM port