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user manual: TTS does not depend on SAC

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This one little sentence confuses me: TTS is calculated assuming an ascent
surface air consumption (SAC) for the gas currently used.

Time to surface is a decompression + ascent time calculation only. Obviously, the diver
should plan to have suffient gas for this, but TTS is not a function of SAC. There is
the "remaining air time, RAT) some dive computers can calculate which uses TTS in
combination with SAC to assist the diver to start his ascent, but RAT != TTS.

Solution: remove the confusing sentence.

Signed-off-by: Jan Mulder <jlmulder@xs4all.nl>
This commit is contained in:
Jan Mulder 2017-03-07 11:04:23 +01:00 • committed by Dirk Hohndel
parent 3c2aaaf29c
commit ad62d8a731
1 changed files with 1 additions and 2 deletions
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Documentation/user-manual.txt
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@ -2224,8 +2224,7 @@ dive, given the present depth, that does not require decompression (that is, bef
ascent ceiling appears). Once a diver has exceeded the NDL and decompression is required (that
is, there is an ascent ceiling above the diver) then TTS gives the number of minutes
required before the diver can surface. TTS includes ascent time as well as decompression
time. TTS is calculated assuming an ascent surface air consumption (SAC) for
the gas currently used. Even if the profile contains several gas
time. Even if the profile contains several gas
switches, TTS at a specific moment during the dive is calculated using the current gas.
TTS longer than 2 hours is not accurately calculated and Subsurface only indicates _TTS > 2h_.