From: ascen@world.std.com (Ascension Technology)
Subject: Re: TECH: Fastrak.
Date: Fri, 5 Jan 1996 22:13:01 GMT
Organization: The World Public Access UNIX, Brookline, MA


From: ascen@world.std.com (Ascension Technology)

Bruno Rassaerts (alpha!brassaer@uunet.uu.net) wrote:
...deletion...
: The only thing I can think of is that I forgot something in the
: initialisation of the Fastrak. During the initialisation I do a reset,
: set the hemisphere, set the attitude filter and position filter, and
: kick the tracker in continuous mode.

: I even checked the raw data that I receive from the tracker and the
: roll and pitch change on this level.

Sounds like metal distortion. Do you have metal near or in the
operating environment? Try removing metal, or change location of your
transmitter and try the test again.

(The AC nature of the magnetic signal makes the polhemus systems very
sensitive to metal near the working environment.)

Hope this helps. 

Regards,
	Steve Work
	Ascension Technical Support