Operation
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A05595_02_E00_00
HBM: public
MXFS
Physically determining the cabling distance between the interrogator and the
sensor can be difficult sometimes. But distance can be easily computed by, for
example, measuring the sensor with two different acquisition rates.
Distance calculation using the two speed modes
d
+
λ
100
S
ń
s
*
λ
2000
S
ń
s
100
*
2000
@
c
Where:
d
is the distance (in m) between the sensor and the measurement unit;
c
is the speed of light (3·10
8
m/s);
λ
100 S/s
is the sensor wavelength measured at low acquisition speed (100 S/s);
λ
2000 S/s
is the sensor wavelength measured at high acquisition speed (2000 S/s);
With the distance rightly calculated, the systematic error on the wavelength
measurement can be determined and taken into consideration on the sensor’s
computation.
Tip
In catman use a computational channel to get the distance correction.
3.6.3
Filters
MXFS supports low-pass filtering, as any other QuantumX Module. Available
filters are Bessel, Butterworth, linear phase.
Please check
chapter 4.2.1.2 “Sampling rate and filters”, page 47
details.
