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JJ-CCR Rebreather
5.3.1
HUD Calibration
The calibration of the HUD should be done immediately after the calibration of the
controller! We recommend to always calibrate the HUD and controller at the same time!
1. Open the oxygen tank valve
2. Open the mouthpiece (CC mode)
3. Switch on the HUD
4. Start the calibration sequence on the controller (Chapter 6.9)
5. As soon as the controller is calibrated, push the HUD button three times within
one second! It might take a little practice to get this, but it is intended to prevent
accidental calibrations.
6. If you successfully initiate the calibration sequence, all three LED’s will be bright
red for a few seconds. If you don’t see that, the HUD is not calibrated!
7. After the bright red signal from all LED‘s they should flash orange once. That
means the PPO2 is between 0.95 and 1.05. The actual value it uses for the
calibration is 0.98. If a sensor fails the calibration, the LED for this sensor will
flash once red and once green!!
5.3.2
HUD Reading
The HUD allows you to read the current PPO2 for each oxygen cell. This feature
replaces the need for a second handset with a display! The reading of the HUD is also
very easy and straight forward. One orange flash is showing a PPO2 of 1.00 (to be
exact between 0.95 and 1.05). Each green flash is the number of tenths above a PPO2
of 1.0 E.g. three green flashes on one LED are a showing a PPO2 of 1.3 for this oxygen
cell. Each red flash is the number of tenths below a PPO2 of 1.0. E.g. three red flashes
on one LED are showing a PPO2 of 0.7 for this oxygen cell.
Flashes
Cell 1
Cell 2
Description
Cell 3
Each LED flashes once orange with a short break
between. This is showing a PPO2 of 1.0 for all three
cells.
Each LED flashes once green with a short break
between. This is showing a PPO2 of 1.1 for all three
cells.
Each LED flashes three times green with a short
break between. This is showing a PPO2 of 1.3 for all
three cells.
Each LED flashes once red with a short break
between. This is showing a PPO2 of 0.9 for all three
cells.
Each LED flashes three times red with a short break
between. This is showing a PPO2 of 0.7 for all three
cells.
© 2010 JJ-CCR - Version 1.00 / Revision 03
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