[ANSS-netops] stepping noise in sensor

[Greg Steiner]

Don,
After looking at your plots, I'm thinking that it is not RF getting into 
the sensor and being rectified, but that it is changes in power supply 
voltage to the sensor caused by the freewave transmitter being 
activated. put a scope on your dc power line to the sensor, or try some 
realy big (10,000Uf caps across the line. If it is realy stubborn you 
might want to use a 3 terminal regulator to supply power to the 
episensor. Let me know if this helps, Ive seen that the episensor is 
very succeptible to passing through power line disturbances. It seems 
like there are no internal regulators.
Greg
-- 

Greg Steiner

 

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