JJ-CCR ApS 2017
www.JJ-CCR.com
2017 JJ-CCR ApS – 2.00 / Revision 06
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7.2
Define Gas (New Style)
The new “Select Gas” style has an impact
for the “Define Gas” option in the “Dive
Setup” menu. All gases shown simultane-
ously. The current active gas is displayed
with a white background. All not active gas-
es are displayed with magenta.
Whilst in the “Define Gas” edit mode, you can turn on or off a gas. The
rules are identical to the classed “Select Gas” style. The current active gas
can be changed, but not turned off.
After turning on a gas you can specify the O2 and HE content in percent.
The order how your enter the gases does not matter.
8
VPM-B / VPM-GFS decompression model
Additionally to the standard Bühlmann GF decompression model, you can also use VPM-B or VPM-B/GFS as de-
compression model on your JJ-CCR controller. The unlock code for the VPM-B must be purchased as an option.
•
The VPM-B calculations on the JJ-CCR controller run every 5 to 10 seconds. This means the JJ-CCR
controller will best match a desktop planner (like VPlanner) when the minimum stop time is set to 10
seconds.
8.1
Deco Model
The Gradient Factor Surfacing (VPM-BG) option adds conservatism to the shallow stops on dives with sig-
nificant decompression requirements (typically > 1 hour deco). The GFS extension automatically chooses
the decompression ceiling from the more conservative of the VPM-B profile and a Bühlmann ZHL-16C
profile. For the Bühlmann profile a single gradient factor, adjustable over a range of 70% to 99%, is used.
•
The selected decompression model is automatically used within the “Dive Planner (Chapter: 6.14.4).
•
Within the info screen display it shows the used decompression model and the selected gradient factors
or conservatism.
You can choose between three decompression models.
• Bühlmann GF
• VPM-B
• VPM-B/GFS
