HBK FS22SI, User Manual

Page: 82 / 90

FS22SI
BRAGGMONITOR SI USER INTERFACE
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either selecting a sensor or the channel, respectively, and then pressing the “delete" but­
ton.
Sensor Name Sensor's identification field. It is not possible to have two
sensors with the same name.
Central Wavelength
(CWL) Reference wavelength from which wavelength shift (Δλ=x) is
calculated.
Range Min. Value
(nm)
Range Max. Value
(nm)
Safety ranges defined to avoid crosstalk between sensors.
Each sensor has its own operation range.
It is not possible to configure sensors with overlapping
ranges. Sensor measured wavelength values out of the
defined bands are returned as -998. Inside each band only
one peak is considered.
Note: Ranges are only used/accessible when the SPD
method is active (ranges ON).
Formula Function defining the correlation between the wavelength
shift (Δλ=x) and the engineering values. Here it is possible to
set a formula manually, although it is also possible to copy
and paste from other locations. If the desired output is wave­
length shift, insert x on formula text box.
The wavelength shift (Δλ=x) is calculated as the difference
between the measured value at each sweep and the central
wavelength (λ
0
) defined for that peak.
Do Do not
-11.3 -11,3
-11.3*x -11.3x
-11.3*x^2+105.4*x+30 =-11.3*x^2+105.4*x+30
Tab. 7.1
Test configuration
Test Configuration (number 3 in Fig. 7.31 ) allows the user to check the current values
from each sensor according to its configuration. Measured values will be displayed on
the central wavelength field, in accordance to the defined formula for the sensor.
Information
Error code -998 will be displayed when no sensor is found within a range.