Input Filtration
10
Low-pass filter
This first-order filter acts ONLY within
a certain band around filter output value.
This has been designed to cut periodic
noises outside the communication signal
spectrum.
♦ Filter operation is defined by two
parameters:
Filter Time (defines filter time constant) and
Filter Band (defines filter active band
around filter output value).
♦ If the newly measured value differs
from the filter output by more than
Filter Band, the filter resets
with a new initial output value
(newly measured value).
Error Messaging
♦ {+} (over range) -
display value over 999
or sensor damaged (broken).
♦ <_> (under range) -
display value under -199
or sensor damaged (shorted out).
♦ FAL (fail) -
device memory error;
if error still exists after restart,
the unit must be returned for repair.
♦ Wmc (not calibrated) -
all factory calibrations are set to default
and the accuracy can not be guaranteed!
♦ W%P (error in Set Point) -
incorrect Set Point value;
check and readjust.
♦ WHS (error in Hysteresis) -
incorrect Hysteresis value;
check and readjust.
♦ --- (noise / initial check) -
too noisy input signal;
also shows the initial device check
at power-on.
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