KVH Industries TracVision G4 Technical Manual page 46

The Calibration Score
Each calibration results in a calibration score that is stored in the
system's memory.
Magnetic Environment
Accuracy
ACC
CAL<1°
Accuracy (ACC)
The ACC data indicates the degree of accuracy the GyroTrac will
provide based on the quality of the last calibration. Table 2-7 lists
the five possible accuracy levels.
Magnetic Environment (MAGENV)
The MAGENV score (GOOD, OK, POOR, BAD) indicates the
quality of the installation location. If the quality is POOR or BAD,
the sensor module probably should be moved to a more
favorable magnetic environment.
Calibration Update Number (CAL #)
The CAL # indicates the number of times the sensor has been
calibrated. It is used primarily to verify whether a new
calibration has been accepted by the system.
54-0147
Calibration Update
Number
MagEnv Cal#
GOOD 3
Figure 2-32
Sample Calibration Score Screen
Table 2-7
Possible Compass Accuracy Levels
ACC Score Accuracy
º
<1 Better than 1
º
<2 Better than 2
º
<4 Better than 4
º
<8 Better than 8
BAD CAL Recalibrate
For guidelines on finding a suitable
location, refer to "Choosing the
Best Location for the GyroTrac
Sensor" on page 14.
A complete explanation of the
GyroTrac menus is provided in
Section 3, "Using the ADCU
Interface" on page 59. Specifics
regarding calibration are provided
in Section 3.6, "Control Compass
Mode" on page 77.
Installation
º
º
º
º
41