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Downloading the data to a PC
You will need to find a computer with the “PC-GPS 3.7” software on it (which may also be
labeled “Alto-G12 GPS” depending on who installed the software). All the lab computers in the
ACL and at Treehaven should have it.
You will also need a black, coiled cable with a COM port connection at both ends. Connect one
end to COM port 1 (sometimes COM port A) on the computer. Connect the other end to COM
port 1 at the top of the unit.
Receiving files from the CMT Alto-G12 GPS data collector in "Automatic" mode
Use this procedure to transfer Job files (*.FTR, *.RAW, *.DEF), Feature List files (*.FBR), Route
files (.PAT), Waypoint files (.WPT), Base files (*.DIF) , Almanac files (ALM.*) or User-defined
Coordinate System files (USER_COR.SYS and USER_DAT.SYS) from a CMT GPS data collector in
"Automatic" mode.
Please Note: PC-Mapper does not make use of Waypoint Files.
On the CMT GPS data collector:
1. Connect your data transfer cable from COM1 on the data collector to a serial port on your
PC.
2. From the Main Menu, highlight Transfer Data and press the Enter key.
In PC-GPS:
1. From the GPS menu, click Transfer.
2. (Optional) Click the Change Directory button to choose a different directory for the
incoming files.
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