No.deco.dive.time.remaining.(Dtr); Ascent.rate.indicator.(Asc) - Talis IQ-1201 Benutzerhandbuch

NO DECO DIVE TIME REMAINING
The Talis constantly monitors No Decompression status (NDC), and O2 accumulation (OTR), and displays whichever one is the
least amount available at the time as Dive Time Remaining (DTR).
NDC is the maximum amount of time that you can stay at your present Depth before entering a Decompression situation. It is
calculated based on the amount of Nitrogen absorbed by hypothetical tissue compartments.
The rates each of these compartments absorb and release Nitrogen is mathematically modeled and compared against a maxi-
mum allowable Nitrogen level.
Whichever one is closest to this maximum level is the controlling compartment for that Depth. Its resulting value will be dis-
played as NDC (Fig. 54a) and the NiBG (Fig. 54b).
As you ascend from Depth during a dive, the NiBG segments will recede as control shifts to slower compartments.
This is a feature of the Decompression model that is the basis for multilevel diving, one of the most important advantages that
the Talis offers.
Oxygen Accumulation
If FO2 was set for Nitrox, the %O2 will be displayed on an Alternate screen (Fig. 55a). The % value will increase to represent
oxygen accumulation for that dive, or 24 hour period, whichever amount is greater.
When O2 Time Remaining (OTR) becomes less than NDC, it is displayed on the Main Dive screen in place of NDC.
ASCENT RATE INDICATOR (ASC)
The ASC shows how fast you are ascending. When you exceed the maximum recommended Ascent Rate for the depth you are
at, the Audible will sound during which time all segments of the ASC and the graphic SLO will flash on the Main Dive screen
(Fig. 56). The flashing will stop and normal information restored when the audible is silenced or your Ascent Rate is slowed
below the allowed rate.
The Ascent Rate alarm is based upon 2 sets of speeds which change at a reference depth of 60 FT (18 M). Refer to ascent rate
information provided in the Specifications section in the back of this manual.
WARNING: At depths greater than 60 FT (18 M), Ascent Rates should not exceed 60 FPM (18 MPM).
At depths of 60 FT (18 M) and shallower, Rates should not exceed 30 FPM (9 MPM).
NO DECOMPRESSION DIVE MODE
When Wet Activation is set On, the Talis will enter the No Deco Dive Mode upon descent to 5 FT (1.5 M) for 5 seconds.
When Wet Activation is set Off, the Talis will not enter Dive Mode upon descent unless it is operating in one of the NORM Dive
Computer modes (menus) at that time. Modes such as Surface Mode, Plan, Fly, etc.
No Deco Main, information includes (Fig. 57):
> DTR (hr:min) with wave/clock/profile icon.
> EDT (hr:min) with wave/clock icon.
> Tank icon, Gas in use (1 or 2).
> Current Depth with FT (or M) icon.
> NiBG, ASC - if applicable.
• A (< 2 sec) - to access the ALT 1 screen.
• A (2 sec) - to view the Deep Stop Preview, if set On and activated.
• M (2 sec) - to access the Gas Switch Routine.
• S (< 2 sec) - to acknowledge/silence alarms.
• L (press) - to activate the Backlight.
NORM No Deco ALT 1,information includes (Fig. 58):
> Temperature with °F (or °C).
> Time of Day (hr:min), this is the Watch Default Time.
> Max Depth with MAX and FT (or M) icons.
• A (< 2 sec) - to view ALT 2 if Nitrox, or revert to the Main if not.
• Revert to the Main after 5 seconds, if A is not pressed.
• L (press) - to activate the Backlight.
©2002 Design, 2014
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TALIS
OWNER'S MANUAL
a
b
Fig. 54 - NDC
a
Fig. 55 - %O2
(accumulated)
Fig. 56 - ASCENT ALARM
Fig. 57 - NO DECO MAIN
Fig. 58 - NO DECO ALT 1
Doc. No. 12-5355-r01 (1/20/14)