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Basic Acquisition
Press the Basic Acquisition Button and then select the Spectrum Tab.
Basic acquisition
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spectrum tab
Figure 6 - Basic acquisition
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Spectrum tab
The spectrum tab is intended as a tool to aid setting up of sensors and/or SmartScan parameters. The
sensors on one channel at a time can be viewed with the reflected signal intensity displayed over the
wavelength range. Each peak represents the reflected light from one FBG. In basic Acquisition mode the
gain is applied on a per channel basis. Automatic gain control ensures that the largest signal is not
saturated.
If there are large differences in the signal intensity of FBGs on the same channel then per-FBG gain can be
used with the enhanced acquisition panel, see the Instrument Set Up section for more details. Step through
all the channels that have FBGs connected and ensure that the background noise is below 10% and that the
FBG signal peaks are above 25%.
If desired, the instantaneous spectrum can be saved to file, press the save button whilst the channel of
interest is being viewed. A file of 400 points is generated, with relative intensity of reflection vs wavelength
at 100 pm intervals.
Next move to the Sensors tab.
