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Cobra-Tac User's Guide
page 24 RD Instruments
5.2 Understanding Cobra-Tac Displays
The following section describes the Cobra-Tac displays and how they help
the diver navigate.
5.2.1 Diver Navigation Indicator
The Diver Navigation Indicator shows your relative position (distance and
direction) to the desired line of track. You should try to make the arrow in-
side the grid box point forward, and centered on the middle line, which in-
dicates the desired line of track.
The Diver Navigation Indicator consists of a grid with vertical tick marks
each indicating one-meter of cross-track error. The numerical value above
the Diver Navigation Indicator indicates the cross-track error in meters, and
the symbols on either side of the Diver Navigation Indicator, are a redun-
dant indication of cross-track error (Right/Left/On Track).
ON COURSE TO THE RIGHT
(CORRECTING) OFF COURSE
+
0 2 1 .
X X X X M .
5 0 5
+
1 0 2 .
X X X X M .
5 0 5
+
5 9 6 .
X X X X M .
5 0 5
Figure 4. Diver Navigation Indicator Examples
5.2.2 Pitch and Roll Indicator
The pitch and roll indicator shows the attitude (Pitch and Roll) and heading
of the Cobra-Tac.
PITCH/ROLL
GOOD
PITCH/ROLL
UP AND TO THE RIGHT
PITCH/ROLL
DOWN AND TO THE LEFT
Figure 5. Pitch and Roll Indicator