Blaze AHRS-2 / AHRS-4 / MAG-2 Operating Manual
Page 12
4.3 Compass Setup
Display:
Select the style of the compass tape as in section display mode as described in section 3.3 above
Heading:
Select whether you would like the instrument to display magnetic or true heading. If you select true heading, you need to
enter the correct magnetic variation for your location. You can find your local variation on aeronautical or maritime charts.
The heading displays will be augmented with °M or °T depending on the mode you have selected.
Mag Var:
Select manual or automatic magnetic variation. Automatic variation is only possible if using an external NMEA compatible
GPS receiver.
Variation:
Enter the magnetic variation of your location. This is only used if you would like the instrument to display true heading.
True heading is the heading relative to the geographic North Pole. Magnetic heading is the heading relative to the mag -
netic North Pole. Variation is expressed in degrees east or west. Please note that should you move a long distance, you
may have to update the variation setting. This setting may be ignored if you only use the magnetic heading display option.
Filter:
Select the filter factor for the compass heading. A selection of
"NONE"
,
"LOW"
,
"MED"
or
"HIGH"
can be made. This can
improve the stability of the compass.
Slip:
Select if you would like to enable the slip indicator to be shown underneath the horizon display. The slip indicator oper-
ates in the same fashion as the well known “step on the ball” indicator in traditional cockpits.
Slip Sense:
Select if you want the slip to have a high sensitivity or a low sensitivity setting.