Change to Acousonde accelerometer/compass axis conventions

2011-01-22T13:35:59Z

Dear Acousonde user,

In late December 2010 it became clear that the conventions used by the Acousonde to identify the X, Y, and Z axes for the accelerometer and compass were not easily consistent with industry standards for underwater and airborne vehicles.

Starting in 2011, all new units will be released with new axis conventions that are more consistent with industry practice. To avoid confusion, I recommend modifying any existing Acousonde units that use the older conventions. A detailed description of the old and new conventions, and how to update, is located here:

http://www.acousonde.com/downloads/Acousonde_axis_conventions_update.pdf

If you do not plan on using the accelerometer and/or compass data from your Acousonde, then there is no reason to update. Otherwise I strongly encourage doing so.

Many units have already been updated. Here are the units that still use the old conventions:

A001
A002
A011
A012
A013
A014
A019
A022
B001
B002
B003
B004

The document linked to above describes how to update using just your Palm; however, if you would like to return the units to me for updating, I would be happy to take care of this. I would update the unit's firmware at the same time. Firmware status may be viewed at

http://www.acousonde.com/releasenotes.html

Best regards,
--Bill Burgess

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