I have two identical boards on my desk  and have some noise problems=20
with one of them. Both have a sensor input and a cable of about two=20
meters attached to the input plus are connected to a CAN bus. The=20
sensors are decouples on the board with a 0.1uF cap. Above my bench I=20
have a fluorescent lamp and one of the boards get very upset (watchdog=20
reset) when this lamp is turned on/off.

First it is strange that only one board does this but my question is how=20
do one approach a problem like this?
I have also tested a piezo gas lightning device close to the boards but=20
it does not disturb the systems.

/Ake

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 ---
Ake Hedman (YAP - Yet Another Programmer)
eurosource, Brattbergav=E4gen 17, 820 50 LOS, Sweden
Phone: (46) 657 413430 Cellular: (46) 73 84 84 102
Company home: http://www.eurosource.se     =20
Kryddor/Te/Kaffe: http://www.brattberg.com
Personal homepage: http://www.eurosource.se/akhe
Automated home: http://www.vscp.org


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