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AMPHOS DC MANUAL
© 2002 Design, 2012 Doc. No. 12-5301-r01 (12/17/12)
DIVE COMPUTER (DC) OPERATING MODES
The AMPHOS features 3 DC Operating Modes -
• NORM >> for normal Air or Nitrox SCUBA dives.
• GAUG >> for SCUBA dives with no nitrogen/oxygen calculations.
• FREE >> for dives with no SCUBA.
SURFACE MODE
Depressing the M button for 2 seconds while Watch Default Time is displayed will access NORM Surface Main (Fig. 29) which is
the default dive computer mode until another is selected.
• GAUG and FREE Surface Main screens (Fig. 30, 31) can be accessed by pressing M for 2 seconds while viewing NORM
Surface Main. Their graphics will flash indicating that they can be selected as the Operating Dive Mode.
• To select GAUG or FREE for diving, press/release M (< 2 sec) while the mode graphic (GAU or FREE) is flashing. When the
graphic becomes solid, that Mode is selected.
• The operating mode selected will remain on display for 2 hours until a dive is made or another mode is selected.
Once a dive has been conducted, the Surface Main for that mode will be displayed.
Operation will enter Dive Mode upon descent to 5 FT (1.5 M) for 5 seconds.
• During the 2 hour pre dive surface period, if the M button is pressed to access Watch Mode, DC Surface Mode must again
be accessed prior to the first dive of a series (if Wet Activation is set OFF).
• When Wet Activation is set ON, the wet contacts will activate the selected Dive Mode regardless of what Mode the
AMPHOS is operating in at the time of the descent.
The AMPHOS will enter post dive Surface Mode upon ascent to 2 FT (0.6 M) for 1 second. The Surface Interval Time colon will
flash during the first 10 minutes after a NORM or GAUG dive, or 1 minute after a FREE dive.
During the first 10 minutes after a dive, the Surface Main screen for the operating mode remains on display. Watch Default Time
can be viewed for 5 seconds during that period by pressing/releasing M (< 2 sec).
When the 10 minute Surface Time has elapsed, Watch Default Time will replace the DC Surface Main which can then be ac-
cessed by depressing M (2 sec).
NORM SURF MAIN, information includes (Fig. 32):
> Graphic Nor (indicating NORM mode).
> Number of recent dive completed (0 if no dive made yet) with DIVE icon.
> Surface Interval Time (hr:min) with SURF icon.
> Gas (tank) 1 icon, 1 is the default on the surface.
> NX icon, if either gas is set for Nitrox.
> Battery icon if a Low Battery warning condition exists.
> NIBG with N2 icon, if any residual nitrogen after a NORM or FREE dive.
• A (2 sec) will access NORM SURF ALT 1.
• A (< 2 sec) will access Log Mode, then again History.
• A + S (2 sec) will access the Set Modes.
• M (2 sec) will access GAUG Surface Main, then another 2 seconds FREE Surface Main.
• M (< 2 sec) will revert to Watch Default Time.
• S (< 2 sec) will access Plan Mode, then again after dives Time to Fly, then Dsat Time.
• L (press) will activate the Backlight.
NORM SURF ALT 1, information includes (Fig. 33):
> Altitude graphic EL2 to EL7, if above 3000 feet (915 meters), blank if Sea level.
> Time of Day (hr:min).
> Temperature with ° icon and graphic F (or C).
• A (< 2 sec) will access ALT 2 (after Nitrox dives), or revert to NORM SURF Main.
• After 5 sec, operation will revert to NORM SURF Main.
• L (press) will activate the Backlight.
NORM SURF ALT 2, information includes (Fig. 34):
> FO2 set for Gas in use at end of dive.
> Gas (tank) 1 (or 2) icon, one in use at end of dive.
> O2BG with O2 icon, current level of O2.
• A (< 2 sec) will revert to NORM SURF Main.
• After 5 sec, operation will revert to NORM SURF Main.
• L (press) will activate the Backlight.
Fig. 29 - NORM SURF MAIN
Fig. 31 - FREE SURF MAIN
Fig. 30 - GAUG SURF MAIN
Fig. 32 - NORM SURF MAIN
(post dive)
Fig. 33 - NORM SURF ALT 1
Fig. 34 - NORM SURF ALT 2
(only after Nitrox dives)