Avcom of Virginia – 7729 Pocoshock Way – Richmond – Virginia - 23235 – USA
www.avcomofva.com – PHONE 1.804.794.2500 – FAX 1.804.794.8284
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2. Adjust the Hi and Lo Threshold controls and if necessary signal filtering (found under Signal
Processing>Filter) to prevent false alarms. The Alarm Hi and Lo Power Threshold Indicators (4a)
will move as these values are adjusted.
3. Drag the Alarm Frequency Range Pairs (4b) to cover the range desired and ignore unwanted
spectrum.
4. Select Lock Shape to lock the alarm tolerances and prevent them from changing. A wizard will
appear to prompt you for recording and email and SNMP alerts.
5. Refresh Rate indicator – Displays the “waveforms per second” received from the SA. This rate will vary
depending on the network connection, PC CPU and the Desired Refresh Rate set in
Configure>Miscellaneous. The Desired Rate can be reduced from the default of 12 (per second) to conserve
CPU resources or limit network data traffic. Refresh rates as low as 1 every 20 seconds is allowed.
6. Record Stream indicator – blinking if turned on.
7. GUI Network Spectrum Analyzer control – If the GUI Network feature in Configure > Miscellaneous is
turned On then this control will appear in the Listen state. This control is for multiple GUIs to view the same
analyzer simultaneously. When a GUI wants to change the SA then this button is selected and depending on
the Lead GUI settings in Configure > Miscellaneous the GUI will either get control immediately or have to
wait for the Lead GUI to grant control permission. When gray, the GUI is in “Listen” mode and the SA
parameters get pushed into the GUI controls, so the GUI controls are now indicators. See Section 7 of this
document for more details.
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