23
To Activate the VT Pro -
• position the Display Module within 3 feet (1 meter) of and
parallel to the Transmitter (Fig. 15), holding it in this location
during activation.
• press and release the Front (Advance) Button.
• Upon manual activation, the unit will enter Diagnostic Mode
(Fig. 16), displaying all segments of the LCD as 8's, followed
by dashes (- -), then a countdown from 9 to 0. A single beep
will be emitted to indicate completion of the check. Diagnos-
tic Mode checks the display, coded Transmitter frequency
Link, and battery voltage to ensure that everything is within
tolerance and functioning properly.
• After manual activation, it will also check the ambient baro-
metric pressure, and calibrate its present depth as zero. At
elevations of 2,000 feet (610 meters) or higher, it will
recalibrate itself to measure depth in feet of fresh water
instead of feet of sea water.
WARNING: If the unit is manually activated at eleva-
tions higher than 14,000 feet (4,267 meters), it will
perform a diagnostic check followed by immediate
shutdown.
Fig. 15 - Positioning
during Activation
Fig. 16 - Diagnostic Mode
O
2
FEET
DEMO
ATR
5
10
20
30
40
50
60
0
O
2
PSI
BAR
M
MAX
O
2
M
A
X
