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Congratulations on your purchase of your Leo-
nardo underwater computer, a sophisticated
and complete instrument, realized in order to
offer you the utmost safety, efficiency, and re-
liability.
Always keep this manual with your Leonardo.
Main specifications.
• The Leonardo features a new Cressi RGBM
agorithm, created in conjunction with the
expertise of Bruce Wienke and based on
the Haldane model, integrated with RGBM
factors. This algorithm allows for safe de-
compression calculations for multiple dives
spread out over multiple days.
• Tissues: 9 with saturation hemi-phases bet-
ween 2.5 and 480 minutes;
• ”Dive” program: Full processing of dive
data, even with decompression (if any), for
any air or hyper-oxygenated mixture (Ni-
trox) dive.
• Full setting of FO2 (percentage of the oxy-
gen) and PO2 (partial oxygen pressure) pa-
rameters: PO2 may be set between 1.2 bar
and 1.6 bar, FO2 between 21% and 50%.
• A Nitrox dive may be carried out after an
air dive (even with desaturation in pro-
gress).
• Possibility of Deco (decompressive compu-
tations) or Gage program setting (depth
gauge and timer).
• Deep Stop can be enabled or disabled.
• Large display with ”PCD System” for per-
fect understanding and readability of values.
• Replaceable display protective cover.
• Battery replacement can be carried out by
the user.
• Planning: Scrolling of the safety curve.
• Unit of measure change from the metric sy-
stem (meters and °C) to the feet system (ft-
°F) by the user.
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