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Fluidmesh 1200 VOLO
7.4.4. Spectral analysis
The Spectrum Graph window contains a static graph readout and
controls to detect radio-frequency interference that exists between local
Fluidmesh units transmitting and receiving in a specified frequency band.
The window can be used make the most efficient choice of center
frequency and channel width for radio links between units.
To use the Spectrum Graph window, do the following steps:
1.
Click the -spectral analysis link under GENERAL SETTINGS in
the left-hand settings menu.
• The Spectrum Graph window will open in a new web
• The Spectrum Graph readout will be empty.
2.
Choose a range for the frequency band that must be scanned for
interference or excessive radio noise by doing either of the
following:
• Set the start and stop frequency selection to the system
• Enter custom start frequency and stop frequency values for
3.
In the Commands table, click the Start button.
• When the frequency scan is complete, the Spectrum Graph
• Signal quality for each channel is shown as a function of
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(Figure 29 (page
Figure 29. Spectrum Graph window (typical display)
defaults (4 950 MHz to 5 825 MHz) by clicking
the Default button.
the frequency band that must be scanned for interference,
in the Start Frequency (MHz) and Stop Frequency (MHz)
fields.
window will show the scan result.
signal noise quantity (in decibel-milliwatts) at each
frequency. The higher the value shown on the graph, the
poorer the signal quality. A green display indicates high
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