Operations Manual Perdix
Manual DocRev B
30
Marking a Heading
To mark a heading, when viewing the compass
press the MENU (left) button . This brings up the
"Exit Mark" menu . Press the SELECT (right)
button to mark the heading .
The marked heading is shown with a green
arrow . When within
±
5° of the heading, the
degrees display turns green .
The reciprocal heading (180° from marked
heading) is shown with a red arrow . When
within
±
5° of the reciprocal heading, the
degrees display turns red .
When more than 5° off the marked heading, a
green arrow shows the direction back to the
marked heading . Also, the offset degrees to
the heading are displayed (16° in the example
image) . This offset is useful when navigating
patterns . For example, a box pattern requires
turns at 90° intervals, while a triangle pattern
requires 120° turns .
Compass
Watch the video:
Compass Calibration
A video demonstration of proper compass calibration on the Petrel 2 dive
computer can be found below . (Calibration procedure is the same for Perdix):
