User`s guide

154 Agilent E6474A User’s Guide
B GPS Connections for E74xx Systems
Sensor Calibration
If you are using Dead Reckoning, the Heading and Speed
sensors must be calibrated after you install the navigator. The
DOS application PLCRINIT for calibrating the sensors is
included with your system on a floppy disk. Copy the
pinit140.exe and pinit140.ini files to your computer’s hard disk
before starting the procedure.
Starting the PLCRINIT Calibration Program
PLCRINIT is a DOS program, set up to run at 9600 baud using
the computer’s COM1 serial port. To start the PSCRINIT
calibration program:
1 Start the computer in DOS mode. (PLCRINIT does not run
properly if it is started from the MS DOS Command Prompt
in Windows.)
2 Type pinit140.exe to start the PLCRINIT calibration
program. (If necessary, first use the DOS CD command to
change the path to the directory that contains pinit140.exe.)
The PLCRINIT main screen is divided into two windows. The
upper window provides the menus and choices for the
calibration procedure. The lower window shows scrolling
data not relevant to the configuration process.
3 Press d to enter the 455DR Sensor Setup menu.
4 Follow the instructions on each screen, pressing Enter after
entering a choice in response to a prompt, except where
“Press Any Key” is displayed, or the action takes effect
without pressing Enter.
For additional information about the navigator, visit the
Trimble Navigation web site at: www.trimble.com/mpc/placer.
NOTE
The speed sensor calibration procedure requires the vehicle to be driven a
measured mile. The heading sensor calibration procedure requires the
vehicle to be driven in continuous circles. Choose a location, such as a
parking lot where this can be done.