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F.10 v.3 OPERATING MANUAL
© 2002 Design, 2014 Doc. No. 12-5380-r01 (7/15/14)
BACKLIGHT
To turn the Backlight On, press and release the L button momentarily (< 2 seconds). The Backlight will remain On for the Duration
time set (a Set U selection) unless you turn it Off during that time.
• The Backlight will come On (even if set OFF) when Alarms strike and remain On until turned Off or automatically after 10
seconds .
• Pressing and releasing the L button (< 2 seconds) while the Backlight is On will turn it Off.
• Depressing the L button for 2 seconds while the Backlight is On, will reset the timer and extend the On time to the full Duration
time set.
• If the L button is held depressed for more than 60 seconds, the Backlight will turn Off and not turn On until the button is released
then pressed/released again.
• The Backlight will be disabled when there is a Low Battery condition, and be re enabled once the battery is replaced.
• Extensive use of the Backlight reduces Battery use life.
• Turning the Backlight Off when it is not being used will help extend Battery use life.
• The Backlight does not operate when the unit is connected to a PC or Mac.
POWER SUPPLY
The F10v3 utilizes (1) 3 volt CR2430 Lithium Battery.
Battery voltage is checked every 2 minutes during operation while on the surface.
• If voltage decreases to the Warning level (2.75 volts), the Battery icon will appear on the Watch Main Time and Free Surface
screens (Fig. 2a) as an indication that the Battery should be changed prior to commencing a series of dives.
• If voltage decreases to the Alarm level (2.50 volts), the Battery icon will flash and operation will automatically revert to Watch
Main Time and only operate in Watch modes until the Battery becomes completely depleted.
• Low Battery Warning/Alarm conditions are not displayed during Dive Modes.
• If a Low Battery Condition was not displayed prior to starting a Dive, and a Low Battery Condition occurs during the dive, there
will be sufficient Battery power to maintain operation for the remainder of that dive. Upon surfacing, the message CHNG >>
BATT will alternate (Fig. 3), then operation will automatically revert to and remain in Watch Main Time until the Battery becomes
completely depleted.
Fig. 2 - LOW BATTERY
WARNING
a
Fig. 3 - LOW BATTERY
ALARM
Each display represents unique pieces of information. It is imperative that you understand the
formats, ranges, and values of the information represented to avoid any possible misunder-
standing that could result in error.
Understand which Time displays are represented as Minutes: Seconds and which are
Hours:Minutes.
You must also understand the icons, symbols, and alpha/numeric messages presented.
The Informational Displays are described in detail as the various operating modes they
appear in are presented throughout this manual.