Vega AHRS-1 / MAG-1 Operating Manual
Page 5
3.3.2 Using the course steering indicator
To activate the course steering indicator, steer the required heading and then press the F1 key. The compass will display:
The F1 key pressed at a heading of 176 degrees. Currently the heading equals the
course to steer as shown below the heading tape. No course steering indicators are
shown.
The current heading is 169 degrees; course steering indicators show the need to steer
slightly to the right to intercept the course.
The current heading is 218 degrees; course steering indicators show that a large
correction to the right is required to intercept the course.
Each “>” or “<” equals 2 degrees of heading error. To cancel the course steering function, simply press the F1 key again.
3.3.3 The reverse course (from heading) display
Press the F2 key to activate the reverse course display. This display remains active for
about 5 seconds before reverting back to the normal heading display.
3.3.4 Heading stability issues
You may find short term fluctuations of the heading occurring. These tend to be very small and are typically less than one
degree. This could still cause the heading to fluctuate occasionally by a single degree. These fluctuations occur naturally
in the earth’s magnetic field and can also be caused by nearby electrical equipment such as radios, lamps, electronic
instrumentation or computers, even the ignition systems of engines. The AHRS-1 / MAG-1 has a compass filter setting
which can be set to filter out some of these small fluctuations.
