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ALARMS AND SETTINGS
Once in the underwater computer and after choosing the program suitable for your activity, it is possible to
set the alarms that can help the diver to perform the activity from the safety point of view and from that of
training or performance.
They can be visual or visual and acoustic depending on your needs.
Before describing each single alarm, we will indicate those available for each program.
FREE program alarms:
- RRT Recommended Recovery Time alarm.
- Surface time and recovery time alarm.
- Depth alarm.
- Diving time alarm.
- Number of dives performed alarm.
- Acoustic alarms setting.
- Sea or fresh water setting.
PRO program alarms:
- All the alarms of the FREE program.
- Depth to step alarm.
- Automatic lighting of the display.
STATIC program alarms:
- Surface time and recovery time alarm.
- Diving time alarm.
- Setting of repetitions to increase or rise the alarm times.
DYNAMIC program alarms:
- All the alarms of the STATIC program.
- Surface time plus diving time alarm.
- Number of laps covered alarm.
All the programs:
- Settings "save" function of alarms.
- Settings "loading" function of alarms from memory.
- Alarms reset or zero setting function.
WARNING:
The alarms of the four programs of the Drake computer are completely separate and
independent.
WARNING:
The alarms are off when bars instead of numbers appear. To disable the alarms of the times, it
is necessary to intervene on the minutes counter.
RECOMMENDED RECOVERY TIME ALARM FOR FREE AND PRO PROGRAMS.
Underwater diving, if not performed with proper preparation (both physical and theoretical) involves risks.
One of them is to incur in the neurological syndrome of TARAVANA
which is a particular form of Decompression Illness due to several factors associated with an accumulation
of nitrogen (This syndrome is still under study and its causes are not known exactly. It is therefore
recommended to deepen your knowledge by consulting updated and current texts of underwater
medicine). It is a disease that is known since the 40s and that affected the Polynesian pearl divers (the
term TARAVANA means madness). The cause can be summed up in an intense and excessive activity of
diving with duration of at least 4/5 hours, at great depths or in the range of -12/-18m and with very short
surface intervals. To avoid this syndrome, it is recommended to make surface intervals or recovery times
much longer than the diving times, to be perfectly hydrated and always provide an appropriate energy
recovery. To help the diver to keep a proper relationship between the diving time and the recovery time,
Drake has a special function that can store the multiplier of diving time (TR Time Ratio) desired by the
underwater and display the resulting recovery time that will be indicated by the acronym RRT
(Recommended Recovery Time). For example: if the diving time is 1' and 10" and the multiplier TR is
imposed in 4, the RRT time will be 4' and 40'' (1' 10" 'x 4 = 4' 40'').
Alarms setting.
To set the alarm scroll with UP or DOWN buttons until the ALARMS menu. Enter the menu by pressing
MODE. The numbers in the top left of the display below the TR indicator will flash. Press the MODE button
again. The display shows just the highlighted item, flashing. Set the desired value of the multiplier
(between 1.0 and 9.5 with variations of 0.5) by pressing the UP or DOWN buttons. Confirm the set value
by holding down the Mode button for a few seconds until hearing an acoustic signal to confirm exit from the
menu. Alternatively, the computer will change the settings automatically with an acoustic signal and then
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ALARMS: RECOMMENDED RECOVERY TIME ALARM FOR FREE AND PRO MODE
AUTOMATIC
RETURN OR
WITH LONG
MODE BUTTON
BEEP
SURFACE PRO
SURFACE FREE
RECOMMENDED RECOVERY
TIME
TEMPERATURE
RRT: RECOMENDED
RECOVERY TIME
will return to the main screen. Once the alarm has been set, the display will indicate with the word RRT the
time required for surface recovery. When the recovery time SURF.T reaches the RRT time, the diver is
notified visually by the flashing TR (in PRO mode) or flashing SURFT (in FREE mode) and, if the audible
alarms are set, also acoustically.
