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Usage - this figure tells you the total dive hours carried out on your VR computer to
date.
NO STOP
In this screen you can see No Stop Times (NST) for depths to 41m, taking into
account your previous dives and surface interval. The surface interval and target depth
are user changeable. Note that the surface interval figure that you set is in addition to
time already spent out of the water. When using the Buhlmann algorithm, you may be
surprised that the No Stop times appear to be short. They do in fact correspond to
standard Buhlmann dive tables which incorporate safety stops.
For instance:
VR 18m dive No Stop Time = 39 mins VR 18m with 3 min stop at 4.5m = 54 mins
This means that if you were to do a dive to 18m on air with 54 minutes bottom time,
you would see a required 3 minute stop at 4.5m on your look ahead schedule as you
began your ascent. (Times are on air and assume no residual nitrogen to take into
account).
FLY TIME
The FLYTIME screen shows the time that must elapse before you may fly in a
pressurised aircraft and the length of time before your tissues will be totally
desaturated.
Altitude will also be shown to help with rebreather calibration.
VR Dive Computer Operations Manual 2009 rev E 28/01/2009
37
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