CCR Upgrade Instructions
If you have upgraded to CCR for your NiTek Q, your computer can now be used with closed circuit rebreathers using a
constant–P02 setpoint ranging from 0.4 to 1.6. The CCR upgrade allows you to program the NiTek Q with the set point
you have programmed into your rebreather. As long as you run the rebreather at the setpoint you programmed into the
Q, it will provide accurate dive and decompression information. You can change setpoints on the y in DIVE mode to ac-
count for any shifts you may make on the rebreather.
You will need to program the NiTek Q with your rebreather diluent gas and all bailout gases for each dive. The setpoint
is programmed separately and is used to calculate your decompression. If you have to switch from closed circuit (C/C) to
open circuit (O/C) mode during a dive, you will be able to change to your pre-programmed bailout gases to complete
any decompression.
NOTE: You must unlock the Trimix upgrade to upgrade to CCR.
The SURFACE mode, SET mode, and DIVE mode screens reect the closed circuit upgrade. You will need to become famil-
iar with and learn how to use these menus. All other menus and screens are the same as the basic NiTek Q.
SURFACE Mode
The SURFACE mode is the NiTek Q’s default screen. At the
surface, the computer automatically returns to this mode from
any other screen after 20 seconds, (slightly longer than 20
seconds when in prole and compass modes). Upon surfac-
ing from a dive, the computer also returns to the SURFACE
mode screen, and displays additional post-dive information
(see page 16).
The Surface mode displays battery charge status, date, time,
choice of FRESH or SEA calibration, either “O/C” or “C/C”, and
the gas mixes you will use when diving.
To switch between O/C and C/C, simultaneously hold buttons A and B for 2-3 seconds.
Be sure you are in the appropriate O/C or C/C mode when programming your NiTek Q for dives with a rebreather.
Dive Option SET and Display Mode
The dive option SET and display mode is where all “dive” set-
tings are programmed including your P02 alarm or setpoint
(SP) for each gas, %02, the maximum safe operating depth
(MOD), an optional maximum depth alarm, a maximum dive
time alarm, conservatism/gradient factor options, a sampling
rate for the log book, the FRESH or SEA water option, and
screen brightness control. When the computer is in this mode,
“SET” is displayed in the lower left hand corner of the screen.
SET Screen One is where you will program your mixes, includ-
ing the following options:
1. MIX Number – This is the mix number you are setting.
2. P02 or SP Setting – This is the P02 setting for the mix number selected on O/C mode, or setpoint (SP) setting in
C/C mode. The P02 can be set for either be 1.4 or 1.6 in O/C mode, and the SP for 0.4 to 1.6 in C/C mode.
3. F02 – This is the oxygen percentage for the mix number selected. The 02 range is 8%-99%.
4. % HE - This is the helium percentage for the mix number selected. The %HE range is 0%-92%.
CO8000 NiTek Q
www.DiveRite.com
24
Appendix B - CCR UPGRADE
SURFACE Mode Screen
SET Screen One
(58 pages)
(49 pages)
(60 pages)
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