Crest Audio CR-4 - Scuba Mode; Scuba Mode (Preview)

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1.4 Scuba Mode and Settings
1.4.1 Scuba Mode
Scuba Mode:
To Access: Under Menu, press t UP
Button / DOWN Button to locate the cursor
and then press MODE Button once to
select Scuba Mode.
To Exit: Press Power Button once.
Description: Scuba Preview Mode
Image on Top: Normal Display
Image at bottom: Large Display
OC: Open-Circuit Scuba
: Battery Status
000.0 m: Current depth.
CF: Conservative. 3 levels to select:
CF-1(Conservative), CF-2(Normal), and
CF-3(Aggressive). Default: CF-2.
TIME: Dive Time.
PPO2: Current setup of PPO2 (partial
pressure of oxygen). Setup range: from
1.2 to 1.6. Default: 1.4.
MOD: Maximum Operating Depth
suggestions.
O2%：Oxygen percentage value. Default:
21%.