ComNav T300+CGSurvey - Page 17

ComNav T300 + CGSurvey User Guide
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 External Power Supply
The base station uses internal UHF to transmit correction data, which will increase
the power consumption a lot, therefore, ComNav strongly suggest you to use
external power supply (7-28 volt DC) for base station receiver.
You can connect the receiver to an external power source through 7-pin Lemo port
in the bottom of the receiver. As shown in the snapshot below, use Lemo to RS232
cable to connect with T300 and external power cable. Connect the red alligator clips
of external power cable to the positive of external battery and the black one to
negative.
Tips: Please use 7-28V external battery with high quality. T300 have the
protection mechanism of reversed battery connection, but it cannot work if you reverse
connection.