Turtle Dive Logger
Submersible position, depth, temperature and
immersion status data logger
Technical Manual
Version 4.0
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Turtle Dive Logger Technical Manual
Contents
1. Introduction ............................................................................................................. 1
2. Turtle Dive Logger Specifications .............................................................................. 2
Schematics ............................................................................................................. 3
4. Operating the Turtle Dive Logger ............................................................................. 4
Overview ................................................................................................................ 4
Charging the Turtle Dive Logger ............................................................................. 5
Activating the wet sensor ...................................................................................... 6
5. Communicating with the Turtle Dive Logger ............................................................. 8
Installing TurtleCom ............................................................................................... 8
Operating TurtleCom ........................................................................................... 10
Radio Linked Turtle Diver Logger and Paua Boat Loggers .................................... 15
6. Google Earth .......................................................................................................... 18
7. Further Assistance .................................................................................................. 19
1
Turtle Dive Logger Technical Manual
1. Introduction
The Turtle Dive Logger is a fully self-contained submersible data logger. It is very
simple to operate, logging automatically on contact with water. All the user need
do is download the data and charge the batteries.
The Turtle Dive Logger logs:
The geographical position when
on the surface of the water
Dive depth and temperature profile
while underwater
FRONT VIEW OF TURTLE DIVE LOGGER
Depth
sensor
Coms and
charging
connector
cap
BACK VIEW OF TURTLE DIVE LOGGER
Temperature sensor
TOP VIEW OF TURTLE DIVE LOGGER
GPS Antenna
Serial number
Status light
Indicator
Wet
sensor
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2. Turtle Dive Logger Specifications
Position:
Logging Interval:
GPS Module: Fastrax P500
Surface 10 to 60 seconds (user adjustable)
Dive 1 to 60 seconds (user adjustable)
Depth:
40m water depth
Temperature:
Range 0 to 40˚C
Batteries:
3 x Sanyo Eneloop Nickel Metal Hydride
Thermal and short circuit protection fitted
Memory:
4 megabytes: equivalent to about 200,000 surface records or
800,000 dive records.
Data is retained even if the batteries go flat
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Schematics
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3. Operating the Turtle Dive Logger
Overview
Operation of the Turtle Dive Logger has been designed to be as simple and
reliable as possible. When the Turtle Dive Logger is out of the water, it enters a
low power deep sleep mode. When it detects water, it wakes up and enters the
logging mode, logging data according to its situation, either on the surface or
diving.
On the surface the Turtle Dive Logger records the position data - latitude,
longitude and UTC date and time - from the GPS. During a dive, it records
temperature, water depth, UTC date and time.
The Turtle Dive Logger features a small flashing light visible through the housing.
The color and flashing sequence indicate the status and operation mode of the
Turtle Dive Logger (see table below).
Every 12 seconds
Description
1 flash
Green
Idle Red
Idle, low battery
2 flashes
Green Green
Good battery, good GPS fix
Red Green
Low battery, good GPS fix
Red Red
Low battery, invalid GPS fix
Green Red
Good battery, invalid GPS fix
Green Orange
Good battery, diving (GPS Off)
Red Orange
Low battery, diving (GPS Off)
3 flashes
All Red
Flat battery shutdown
4 flashes
All Red
Memory full
Long flash
Green
Dry to wet state change
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