POSEIDON M28 User manual

POSEIDON M28
USER MANUAL 1.2
fw version 1.8

Table of Contents
Table of Contents 1
Conventions Used in this Guide 4
Preface 6
Chapter 1 Preparation 7
An overview of the M28 8
Charger cable 9
Charging 10
Long-term storage 10
Dive log data 10
Wi-Fi connection 10
O-ring care and maintenance 11
Chapter 2 Assembly 12
Bungee cord preparation 13
First start up 14
Button function 15
Monitoring the Display 16
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The menu system 17
Settings 18
Backlight control 19
Chapter 3 Display 22
Top bar 22
System app 23
System app - menu tree 24
Force fw update 25
Update CAN enabled Poseidon products 25
Update SE7EN firmware through the M28 27
Land app 28
Dive app 29
OPEN CIRCUIT (OC) MODE MENU 32
OPEN CIRCUIT (OC) MODE AFTER DIVE START 33
CONFIGURING GASES IN OC MODE 34
GAS SELECTION IN OC MODE 34
DECOMPRESSION MODEL SELECTION 34
M28 CLOSED CIRCUIT MODE MENU 35
M28 CLOSED CIRCUIT MODE AFTER DIVE START 36
SE7EN CLOSED CIRCUIT MODE MENU 37
SE7EN CLOSED CIRCUIT MODE AFTER DIVE START 38
GAUGE MODE 39
Center circle 40
Dive log app 45
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Map app 46
Picture app 47
Planner app 48
Chapter 4 Wi-Fi Access Point 49
HOME 49
DIVE LOG 50
REDBOX LOG 51
PICTURE 52
SCREEN DUMP 53
FIRMWARE UPDATE 54
SYSTEM 55
Appendix 1 Symbols 56
Appendix 2 Connectivity example to Rebreather 58
Support and Feedback page 59
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Conventions Used in this Guide
This User Guide is NOT intended for use as a training manual, or in any way as a substitute for proper training through a
legitimate training agency approved by Poseidon AB. It is only intended to provide basic information concerning the
Poseidon M28.
Throughout this Guide, special alert boxes have been inserted to draw attention to critical information. Three levels of
alerts are used in conjunction with color-coded symbols, as follows:
DANGER:
Alert boxes that are RED contain extremely critical information related to the safety and well-being of
the diver. Failure to comply with information contained in these boxes could lead to serious injury or
death.
WARNING:
Alert boxes that are YELLOW contain vital information that may impact a diver’s safety and/or proper
function of the Poseidon M28. Though generally not life-threatening, information contained in these
boxes should not be ignored.
IMPORTANT:
Alert boxes that are BLUE contain important information about the proper care and maintenance of
the Poseidon M28, and that may increase divers comfort or enhance enjoyment during dives.
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No part of this book may be reproduced or transmitted in any form or by any means, electronic or mechanical, including
photocopying, recording or by any information storage retrieval system, without permission in writing from an authorized
representative of Poseidon Diving Systems AB.
Text, photographs and figures copyright © 2017
by Poseidon Diving Systems AB
ALL RIGHTS RESERVED
Manual Version 1.2 - February 2017
DANGER:
The Poseidon M28 is an advanced dive computer, which functions in a manner distinctly different
from traditional dive computers. Do not attempt to use the Poseidon M28 without a thorough and
complete working knowledge of the material contained in this manual. Careless use of the Poseidon
M28 can lead to decompression sickness or death in any environment without any prior warning
symptoms.
Careless use of the Poseidon M28 at depths underwater greater than 200 msw (meters of seawater)
[656 fsw (feet of seawater)] can lead to failure of the computer without any prior warning. This
conditions can cause serious injury or death. The Poseidon M28 is equipped with sophisticated
electronic control systems, which will allow a properly trained user to avoid these situations. It is the
user’s responsibility to attentively monitor these systems when using the Poseidon M28 and to have
a working knowledge of the abort procedures should a problem arise.
The computer calculates decompression stops. These calculations are based on available
knowledge and is provided as a guidance and are not exact physiological data.
Remember that this device can fail, due to mechanical failure, firmware issues or other technology.
Do not depend upon this device solely, use also redundant tools to manage your dive in case of a
total failure of this computer. Use at your own risk.
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Preface
Congratulations on your decision to purchase the Poseidon M28 dive computer.
The Poseidon M28 design includes several fundamental improvements over previous dive computer designs.
International design registration (WIPO) DM/093447 for design of computer M28, CPOD and graphic interface.
Features:
● High performance OC and CCR dive computer
● Feature-rich graphics thanks to a the 2.8” TFT LCD Color Display
● Highly intuitive user interface with 2 button control
● Enhanced SE7EN with the M28’s Rebreather Management System
● Dive-by-Wire™ integration with Poseidon Pod Systems, HUD, HP and other sensors
● Dual decompression algorithm (DCAP and Bühlmann ZHL16C with gradient factors)
● Dynamic interface; Wi-Fi access point.
● Real-time GPS surface positioning
● Depth rated to 200m / 656ft
● Firmware upgradable
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Chapter 1 Preparation
This chapter describes the steps to assemble and prepare the Poseidon M28 for diving. The M28 is a modular device
with sub systems. Box content:
• M28 computer • Quick reference guide
• Charger cable • Travel pouch
• Bungee cord • Storage case
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An overview of the M28
The figure illustrates these locations and the main features of the Poseidon M28. The “back” of the M28 is the side
opposite to the display side. Following is a brief description of each of the major components.
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Charger cable
The M28 charger cable has a standard USB connector on one end, and a custom submarine connector for the M28 on
the other. To charge the M28, simply remove the cable connector plug using a 15mm tool, insert the connector from the
charger cable, and hand tighten the nut. Connect the USB interface to a standard USB power source. The power source
can be any USB connection providing 5.1V and a minimum current of 1 Amp. If the LED is flashing alternating green and
red for at least 1 minute, it is most likely that the USB power supply's current is insufficient.
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Charging
Once the M28 is connected to a power source through the USB charging cable, the charging symbol will be visible in the
upper right corner of the display, and the battery icon will show as green. The M28 is fully charged once the battery icon
shows the state of charge as 100% and the battery icon turns white.
Long-term storage
Allowing the M28 to sit for long periods of time without recharging will lead to premature failure of the battery. If the M28
will not be used for a substantial period of time, the best storage method is to top off the charge once a month by running
it on the normal charge cycle with the charger cable. If this is not possible, then the best long-term solution is to leave the
M28 plugged into the charger. The method of monthly top-off of charge, however, will maximize the battery life. Store the
M28 in a cool, dry environment.
Dive log data
The Poseidon M28 automatically creates an extensive dive log every time the system is powered-up. The information
stored in this log will be of significant interest in reconstructing dives and learning about how to improve your diving skills.
Examples of the common types of data you can review are battery information, dive time and depth. However, the dive
log contains more information.
Wi-Fi connection
Make sure that your computer or handheld device is equipped with a standard Wi-Fi device. If not install a Wi-Fi adapter
(many inexpensive models are available). Make sure that your Poseidon M28 unit is turned on and that the Wi-Fi is
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enabled. The M28 is an access point and can be reached through a standard web browser. Once enabled, the Wi-Fi will
be enabled until it's turned off. The icon will flash until a device is connected.
O-ring care and maintenance
The Poseidon M28 is a computer-controlled precision underwater instrument. Its successful continued operation
depends upon preventing water from entering the inner cavity of the computer or within the cable connector. The
computer is factory sealed and pressure tested to maximum operating depth before delivery and there is no reason to
open the device up for any kind of maintenance. The cable connector is the one particular part of the device that will
require special attention. Make sure that any kind of connecting device (cable or plug) is carefully installed, greased and
tightened before underwater use.
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Chapter 2 Assembly
Before you start to assemble or use your Poseidon M28, you should perform the following preparations:
● Make sure your battery is fully charged.
● Make sure you have all parts and that they are undamaged.
● Lubricate the o-ring on the cable connector or cable connector plug
● Make sure that cable or plug connection is properly tightened.
The Poseidon M28 is a very powerful life-support system that offers an unprecedented new experience in recreational or
technical diving. But it is also a complex, high-technology device that includes sensors and firmware that need to operate
reliably in an underwater environment, for the important purpose of keeping a diver safe and up to date with accurate
information. The M28 design team has gone to extraordinary measures to visualize critical information during a dive. This
chapter explains the startup procedures, including manual actions that are required by the user, and how to interpret the
information displayed.
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Bungee cord preparation
Example of how the bungee cord can be attached.
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First start up
To start the M28 press both buttons simultaneously and hold for three seconds.
Once the M28 has been started, the green indicator light will flash to indicate that the M28 computer is turning on. This
will be followed by a start-up screen with a visible Poseidon logo. Please note that the time to visible start-up screen can
vary in length. After a few seconds this screen will be replaced by the land app, recognized by a large central analogue
clock.
DANGER:
Do not attempt to conduct a dive until the system has successfully completed its startup procedure.
Diving in spite of a failed start up is extremely dangerous, and could lead to serious injury or death.
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Button function
Once the M28 is fully powered up, it is ready to use. To operate and access functions, use the two buttons. The interface
is very intuitive to use and is described in the figure below. Press both buttons simultaneously to enter the menu system,
then scroll up or down and press both buttons again to select the highlighted option. After 30 seconds of no activity, the
unit returns to the previous screen.
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Monitoring the Display
Most of the information concerning the status of the dive and various parameters is communicated to the diver via the
Display. It consists of a 2,8” TFT color QVGA screen, and provides the diver with important information concerning
sensor readings, system messages, decompression status, and other data during the course of the dive. It is extremely
important that all Poseidon M28 divers understand how to read the information contained in the Display, particularly
concerning various alarm conditions. Before even turning the Poseidon M28 on, it is useful to understand the general
layout of the Display, and the logic behind how the information is organized.
DANGER:
If the Display screen is ever blank or freezes during a dive, immediately commence an abort to the surface.
Failure to do so could lead to serious injury or death.
On the following pages the various application modes will be discussed, as well as the menu structure. The “Land” app is
the initial app after start up. This app is automatically visible after an initial safety message that can be confirmed by
pressing either one of the two buttons.
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The menu system
Most of the features and functionality of the M28 are accessed through the menu system. To activate the menu system,
simply press both buttons. The menu now becomes visible, the top 3 selections are always the same, starting with “Exit
menu” that takes you back to the current application screen “Settings” that makes it quick and easy to access key
settings and “Apps” that takes you into the various functions of the M28 shown in figure below.
The content below the “Apps” selection bar is always related to the App that you currently use. In this example having the
Land app activated the menu will only show the Stopwatch function. In the following Apps sections we will discuss the
application specific content.
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Settings
The power menu allows you to turn off the device or reboot the device after a firmware update. Pressing both buttons on
one of these menu items will power off the M28 (and reboot to install new firmware, if selected). If the unit does not
power off after a 1 minute, it is also possible to force a power off by holding both buttons pressed for more than 8
seconds.
The connect menu is used to connect to external sources such as external sensors, HUD, CPODs and others.
When you connect the M28 to an external sensor or any other device that lacks its own power supply, you need to
activate the power output from the M28 to provide power to such a device. Pressing both buttons on this menu item will
toggle this feature between OFF (default) and ON. When set to ON, the power icon will appear in the upper bar of the
Display. Remember that this will affect the battery life.
Pressing both buttons on this menu item will toggle this feature between OFF (default) and ON. When set to ON, the
GPS icon will appear in the upper bar of the Display. The icon will flash until a GPS fix is received.
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To communicate with the M28 from any other device you need to turn on the Wi-Fi AP (Access Point). This function is
primarily used when you need to update firmware or when you upload or download data to or from the M28. Pressing
both buttons on this menu item will toggle this feature between OFF (default) and ON. When set to ON, the Wi-Fi icon
will flash in the upper bar of the Display.
To connect to the M28 through the access point, use your PC/Mac or handheld device and connect to the Wi-Fi network
“M28-XXX” where XXX is the unique serial number of your M28. If you are uncertain about your serial number go to the
“System” app. The password to the network is “matterhorn”, once connected open a web browser on your PC/Mac or
device and type in "http://192.168.7.1" in the browser and you will enter a welcome page from the M28. The browser
functionality will be discussed in a later section of this manual.
Remember that the Wi-Fi mode is affecting the battery life.
Backlight control
If backlight control is enabled the screen will automatically control the backlight depending on the ambient light. The user
can select the low and high backlight level. The ambient light sensor will control the backlight between the High and Low
value. Remember that the backlight settings will affect the battery life.
The highest backlight brightness to be used at the highest ambient light level. Remember that high level also increases
the battery current and you get a shorter battery life.
The lowest backlight brightness to be used at the lowest ambient light level.
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