want to attenuate the stamping of the cattle on the balance (that's the noise signal) with
the adaptive averaging filter. Then you would follow these steps:
The adaptive averaging filter must be enabled. Now let some animals go onto the balance
and give then SetAdaptFilterOptimize e.g. with Parameter =200. Then the self-learning
period lasts 20 seconds at a data rate of 10/s. After these 20 seconds the animals may
leave the balance; the „stamping“, that is the noise signal should now be attenuated, so
theoretically reduced by the factor 1/sqrt(32), which is about 1/5.
With the adaptive averaging filter any noise signal, e.g. present in an environment with
harsh elecromagnetic interference can be filtered, that means attenuated. Start the self-
learning phase with SetAdaptFilterOptimize
with the filter enabled, while the noise signal is
strong, but the wanted signal doesn't change significantly.
A special functionality of SetAdaptFilterOptimize can be triggered with parameter
=0x0000. Then the comparison mask will not be determined automatically, but it will be
selected from 4 constant values considering the data rate. Using this special function is
recommended after changing the data rate, provided the noise signal level at the GSVs
input hasn't changed significantly. Otherwise SetAdaptFilterOptimize with Parameter >4
(self-learning) should be done as decribed, if the data rate has changed.
The following special modes must be disabled in order to execute SetAdaptFilterOptimize;
otherwise the command will be rejected with error code =0x56: maximum value mode,
Slow-mode, NoiseCut, AutoZero.
Value range: 0x0000, 0x0004..0xFFFF
Possible error codes: 0xA0, 0x71,0x75, 0x55, 0x56
ME-Meßsysteme GmbH, Neuendorfstr. 18a, D-16761 Hennigsdorf Germany
Phone 03302 78620 60, Fax 03302 78620 69,
,
www.me-systeme.de/en
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Summary of Contents for GSV-2AS
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