Power Supply - Tusa ZEN Operator's Manual

NOTE: Extensive use of the Backlight reduces
estimated Battery life. Also, the Backlight does
not operate during a Low Battery Condition or
when the ZEN is connected to a PC.

POWER SUPPLY

The ZEN uses (1) 3 volt CR2430 Lithium Battery. Used as a Dive
Computer, the battery should operate normally for 1 year or 300
dive hours if 2 dives are conducted during each dive period.
The ZEN checks battery voltage every 2 minutes on the surface.
• If voltage of the ZEN decreases to the Warning level (2.75
volts), the Battery icon will appear on Surface display
screens (fig. 3a) as an indication that the Battery should be
changed prior to commencing a series of dives.
• If the ZEN's voltage decreases to the Alarm level (2.50
volts), the Battery icon will flash and the message CHG >
bAt will scroll (Fig. 4a) for 5 seconds then operation will
automatically revert to Main Time Mode. The ZEN would
then only operate in Watch modes until the Battery
becomes completely depleted.
• Low Battery conditions are not displayed during dives. 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 remaining to maintain
operation for the remainder of that dive.
a
Fig. 3 - LOW BATTERY
WARNING
Fig. 4 - LOW BATTERY
ALARM
a
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