KVH Industries TracVision G8 Owner's Manual page 103

Calibrating the Gyros
To calibrate the azimuth, elevation, and roll gyros, follow the
steps below.
1. With a PC connected to the MCU's maintenance
port, apply power to the antenna unit.
2. Type HALT<cr > (<cr> indicates a carriage
return/ENTER key) while the system is performing
the limit switch initialization routine. The system
will complete the initialization function by finding
the azimuth and elevation switch limits and then
go to the home position.
DEBUGON<cr>
3. Type
4. Type EL,300<cr>.
5. Using a digital level (or equivalent), measure and
record the angle of the feed tube, as shown in
Figure 5-19.
6. Type =CALUP,XX.X<cr>
number you recorded in Step 5.
7. Using a digital level, measure and record the angle
of the roll gyro on the PCB module, as shown in
Figure 5-20.
8. Type GYROANGLE,X.XX<cr>
number you recorded in Step 7.
=CALGYRO<cr>.
9. Type
Gyro Azimuth scale factor is between -0.00090 and
-0.00110 and the Antenna Gyro Elevation scale
factor is between 0.00090 and 0.00110.
ZAP<cr>
10. Type
54-0198
to enter the Debug Mode.
, where XX.X is the
, where XX.X is the
Verify that the Antenna
to restart/reinitialize the system.
Refer to Section 4.5, "Computer
Diagnostics," on page 88
complete details on connecting a
PC to the system via the
maintenance port.
Figure 5-19
Measuring Feed Tube Angle
Feed Tube
Figure 5-20
Measuring Roll Gyro Angle
PCB Module
Maintenance
for
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