Operation Manual

8
VT 4.0 OPERATING MANUAL
© 2002 Design, 2011 Doc. No. 12-5213-r02 (9/6/11)
POWER SUPPLY
• VT 4.0 Battery >> (1) 3 vdc, CR2450, Lithium.
• Shelf life >> up to 5 years.
• Use life >> 100 dive hours if (1) 1 hour dive per dive day up to 300 dive hours if (3) 1 hour dives per dive day.
• Transmitter (each) >> (1) 3 vdc, CR2, .75 Ahr, Lithium.
• Use life >> 300 dive hours if (2) 1 hour dives per dive day.
• Replacement >> by user (annual recommended).
Battery icon (for VT 4.0 only, does not apply to TMTs):
• Warning >> icon on solid when < 2.75 volts, battery change recommended.
• Alarm >> icon on flashing when < 2.50 volts, change the battery.
BATTERY STATUS
To access, while viewing NORM (or GAUG) SURF Main >>
• M (< 2 sec) to access Main Menu.
• A (< 2 sec), repeat until icon ( > ) is next to BATT/TMT.
• S (< 2 sec) activates Receiver, then VT 4.0 Status screen appears for 3 sec (Fig. 1), then each active TMT's Status screen for
3 sec (Fig. 2).
VT 4.0 LOW BATTERY WHILE ON THE SURFACE
<= 2.75 volts (warning level)
• Backlight is completely disabled.
• Battery icon (shell with inner bar) appears solid (Fig. 3a).
• If a dive is started, the icon is not displayed on the dive mode screens.
• All functions, including Compass Mode, continue to be available.
<=2.50 volts (Too Low - alarm level)
• Battery icon (shell only) will flash for 5 seconds then the unit shuts off completely.
VT 4.0 LOW BATTERY DURING A DIVE
<= 2.75 volts (warning level)
• Backlight is completely disabled.
• All other functions continue to be available.
• Battery icon is not displayed on the dive mode screens.
• Battery icon (shell with inner bar) appears solid upon entry into Surface Mode.
<= 2.50 volts (Too Low - alarm level)
• Backlight is completely disabled.
• All other functions continue to be available during the dive.
• Battery icon is not displayed on the dive mode screens.
• Upon surfacing, the Battery icon (shell only) and graphic CHANGE BATTERY flash for 10 minutes (Fig. 4), then the unit shuts
Off completely.
TMT (TRANSMITTER) LOW BATTERY
Indication is provided only while on the surface.
<= 2.75 volts (warning level)
• The graphics TMTx BATTERY LOW appear solid on the Battery Status screen (Fig. 5A).
• DC functions continue to be available (surface and dive).
<= 2.50 volts (Too Low - alarm level)
• The graphics TMTx LOW BATTERY alternate with the graphics NORM (or GAUG) and DIVE xx on the SURF Main screen
(Fig. 5B).
• The graphics TMTx BATTERY and LOW also flash on the Battery Status screen.
• TMT operation continues until Tank Pressure decreases to 50 PSI.
Fig. 1 - VT 4.0 BATTERY
STATUS
Fig. 2 - TMT BATTERY
STATUS
Fig. 3 - LOW BATTERY
WARNING
a
Fig. 4 - LOW BATTERY
(after surfacing)
Fig. 5B - TMT LOW BATT
(Alarm)
Fig. 5A - TMT LOW BATT
(Warning)