8.3.2.7
Sensor Gain and Bias Override
Depending on the specific application of a sensor, a different gain or DC bias may be needed. The YVIB provides a
configurable override for the default values for Gain and Sensor Bias through the
GnBiasOvride
parameter. Setting
GnBiasOvride = Enable will replace the default Gain and Sensor Offset with the configured Gain and Snsr_Offset parameters.
Use of Gain and Snsr_Offset in YVIB
The sensor inputs relate to the YVIB Snsr_Offset and Input_Range values. Input_Range is a value determined by Gain
through the following formula:
_
=
Input_Range is centered on -Snsr_Offset, which allows us to define the valid input voltage range with the following formulas:
Maximum Input Voltage Definition
=
−
_
Minimum Input Voltage Definition
V
=
−
−
_
It is critical that the values of
Gain
and
Snsr_Offset
are chosen correctly to avoid saturating the A/D Converter on that
input channel, which results in clipping the signal. Consider the following case, where Input Range is correctly determined,
but
Snsr_Offset
is too low.
Input Clipping due to Snsr_Offset
YVIB Vibration Monitor Modules
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