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VTX OPERATING MANUAL
© 2002 Design, 2014 Doc. No. 12-5382-r01 (10/24/14)
Calibration complete -
> Once fully formed, the circle will be replaced with the graphics READY PASSED CALIBRATION (Fig. 88E) or FAILED
CALIBRATE AGAIN (Fig. 88F), flashing for 3 seconds, then -
> If READY, operation reverts to the Compass OP Main.
> If FAILED, operation reverts to the TURN FACE DOWN screen for repeat of the procedure.
> If Calibration fails 3 times, operation reverts to the Surface Main screen.
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DECLINATION
Magnetic Declination is taken from numbers provided on maps or charts that apply to a specific location. The numbers represent
the easterly or westerly angular difference (Declination) in degrees between magnetic North and true (geometric or polar) North.
A Compass will point to magnetic North unless its Declination is set to adjust its reference to true North prior to conducting
navigation activities.
Declination Menu, information includes (Fig. 89A) -
> OFF.
> EAST with 00°.
> WEST with 00°.
• A (< 2 sec) - to step forward (down) through selections.
• M (< 2 sec) - to step back (up) through selections.
• S (2 sec) - to step back to the Compass Menu with Set Declination highlighted.
• S (< 2 sec) - to select the item highlighted.
> If OFF is selected, Declination is set for 00° and operation reverts to the Compass Menu with Set Declination highlighted.
> If EAST (or WEST) is selected, the numeric value with ° icon will be highlighted & flash (Fig. 89B).
• A (< 2 sec) - to step up through the set points one at a time from 00 to +/- 45° in increments of 1°.
• A (hold) - to increase the setting at a scroll rate of 4 per second.
• M (< 2 sec) - to step down through the set points one at a time.
• S (< 2 sec) - to save the setting with the EAST (or WEST) highlighted.
• S (2 sec) - to revert to the Compass Menu with Set Declination highlighted.
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ALARMS (while in Compass Mode)
When most Alarms strike, operation in Compass Mode will be terminated and the Dive Main will be displayed indicating the
alarm condition. Compass Mode can then be reentered by pressing S (2 sec).
During several types of alarms, indication will be given while remaining in Compass Mode without interuption. They are -
Ascent Alarm (Fig. 90A) -
> VARI (AR) - all segments (their usual colors) flash until slowed.
Depth Alarm (Fig. 90B) -
> Depth digits (red) flash during the audible, then return to their normal color (white) solid.
Loss of Link (Fig. 90C) -
> Graphic LOST LINK (yellow) flashes in place of Depth during audible, then Depth is restored.
Fig. 89A - DECLINATION
MENU
Fig. 89B - SET DECLIN
Fig. 90A - ASCENT ALARM
Fig. 90B - DEPTH ALARM
Fig. 90C - LOSS OF LINK
SET DECLINATION
OFF
WEST
00°
EAST
00°
SET DECLINATION
OFF
+14°
WEST
00°
EAST
FT
178
SW
NWSE
280
°
AR
3
SEC
270
FT
1100
E
SN
085
°
6
SEC
1
E
SN
095
°
10
SEC
LOST TMT
Fig. 88E - PASSED
(reverts to Surface Main)
CALIBRATE
READY
PASSED
CALIBRATION
CALIBRATE
FAILED
CALIBRATE
AGAIN
Fig. 88F - FAILED
(reverts to Fig. 88A)