Intelligent Gyro Compass (iGC)
0707-SOM-00004-7
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© Tritech International Ltd.
7. Operation
7.1. Introduction
Operation of the iGC depends mainly on its application, but in general the iGC transmits the
requested output data in the desired format, commencing this transmission immediately after
power-up and continually until the unit is switched off.
Making the best use of the output data is the user’s responsibility, but Tritech can offer
valuable assistance to ensure that the performance of the sensor is maximised.
7.2. Data Output Formats
7.2.1. Proprietary Outputs
Proprietary operating modes are selected by setting the mode switch position SW8 to the
OFF position.
The proprietary modes are mainly used in applications where the iGC is interfaced with other
Tritech iGC product family devices or directly to the iGC Navigation software.
There is also a fixed-length ASCII output proprietary mode that provides additional iGC data
to ‘Industry Standard’ ASCII formats. This mode is useful where specific telegram decoding /
parsing can be implemented by the Host system.
Full details of the output data formats in Proprietary modes can be found in Appendix D,
Mode Listing - Proprietary iGC Outputs
.
Note
Modes 0 to 47 are not user interpretable and are only usable via the iGC
Navigation Software - see Section 7.4, “ Using iGC Navigation Software ” for
more details.
7.2.2. Industry Standard Outputs
The iGC emulates a large number of commonly used heading sensors. In the Industry
Standard emulation modes, data telegrams are transmitted at data rates and in formats that
match the original heading sensors they are emulating.
Emulated modes are selected by setting the mode switch position SW8 into the ON position.
Full details of the output data formats in Proprietary modes can be found in Appendix D,
Mode Listing - Proprietary iGC Outputs
.
7.2.3. Special Modes
For special applications, a non-standard data telegram may be required to interface with
existing equipment or software. Normally data in a non-standard format can be implemented
