Tritech Intelligent Gyro Compass, Руководство по эксплуатации продукта

Страница: 28 / 50

Tritech International Ltd Intelligent Gyro Compass
10.3 Operational Issues
During operations, the iGC may be used in areas where external magnetic influences cause a
deviation to the heading output data. Under these conditions, the data should be used with caution.
If problems from magnetic influences are regularly encountered, the addition of an iFG to the heading
sensor system will provide significant improvements.
If the iGC is used in applications where the pitch angle goes beyond around 70º from vertical, the
standard mathematical data processing methods will cause anomalies with the heading data until 90º
is reached, at which point the heading data will be unstable. If this type of use is expected, please
contact Tritech and the firmware conversion routines can be changed to support correct operation over
the full 360º pitch range.
10.4 Using iGC Navigation Software
The iGC PC software is a stand-alone application that provides the user with a real-time display of
Heading, Pitch, Roll, turns counter, heave and iGC status. Normally this software is used where the
iGC is not integrated to a complete host control system, but it can be used in parallel with an existing
host control system, providing certain interface criteria are met.
The software operates under the Windows® operating system, and provides a clear graphical display
of iGC data. There are various options selectable by the User in the software that allows integration
with different iGC configurations. It is also a useful tool for faultfinding, commissioning and setting up
iGC applications.
The minimum requirements of the host PC are as follows:

1GHz Pentium 3 or 4 (or AMD equivalent);

Windows 98, Windows NT, Windows 2000 or Windows XP;

256MB RAM;

200MB Free disk space;

1 x RS232 serial port (or USB port for USB to RS232 converter);

1024 x 768 display;

CD ROM drive.
The Navigation Display presents the following information:
Display Item Description
Analogue Heading Animated rotating compass card – this shows instantaneous output of the
active heading sensor output.
Digital Heading Numeric display of the active heading sensor output to 1 decimal place.
Digital Reciprocal Numeric display of the active heading sensor reciprocal heading output to
1 decimal place.
Analogue Pitch Animated artificial horizon display of iGC pitch sensor. +/- 30º range.
Digital Pitch Numeric display of the iGC pitch sensor output to 1 decimal place. +/-90º
range.
Analogue Roll Animated artificial horizon display of iGC pitch sensor. +/- 90º range.
Digital Roll Numeric display of the iGC roll sensor output to 1 decimal place. +/-90º
range.
Analogue Heave Animated heave acceleration sensor display. +30 to –40 ms -2 range.
Digital Heave Digital heave acceleration sensor display to 1 decimal place. +/- 99ms -2
range.
Turns Counter Digital display of number of turns made by iGC system since power-up or
last reset. Range +/- 9.9 turns to 1 decimal place.
IGC Temperature Digital display of iGC internal temperature. –9.9ºC to +70ºC range to 1
decimal place.
System Time Digital display of PC system time in format hh:mm:ss
Issue 2 0707-SOM-00004 Page 29 of 51