HP ALTO-G12 User Manual

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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