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12-1
CHAPTER 12
CONNECTING THE GPS UNIT TO A COMPUTER
The PC Interface Cable supplied with this package allows you to connect
your GPS unit to the serial port of a PC-compatible computer. This cable
includes the proper connector to attach the cable to your unit and to a 9-pin
D-Sub (DB9) connector at the computer's serial port. Computers with 25-pin
D-Sub (DB25) serial port connectors will require an adaptor available at most
computer supply stores.
Some PC Interface Cables also includes a round 7-pin power connector
which may be used to power some models during data transfer operations
(downloading, uploading and real time plotting/logging). This connector is
compatible with the various GARMIN AC and 12V cigarette lighter adapters.
Providing external power is not required (or available on all units), however,
and data transfer can be done using the unit's main source of power.
These items may be purchased from your dealer or you may contact
GARMIN directly to obtain these items.
Remember, when downloading/uploading data, the GPS unit should be set
to "GARMIN" input/output. When performing real time plotting/logging
operations, the GPS unit should be set to “NMEA 0183” output. Refer to the
interface setup instructions in the owner's manual for your GPS unit.