User guide

Canopy System User Guide Using the BER Results Tool (SM, BHS)
pmp-0229 (Mar 2013)
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1. The AP de-registers the target SM.
2. The SM scans (for the duration set in the AP tool) to collect data for the
bar graph.
3. The SM re-registers to the AP.
4. The AP displays the bar graph.
The bar graph is an HTML file, but can be changed to an XML file, which is then easy to analyze
through the use of scripts that you may write for parsing the data. To transform the file to XML,
click the SpectrumAnalysis.xml link. Although the resulting display appears mostly unchanged,
the bar graph is now coded in XML. You can now right-click on the bar graph for a Save Target
As option to save the Spectrum Analysis.xml file.
Using the BER Results Tool (SM, BHS)
Radio BER data represents bit errors at the RF link level. Due to CRC checks on fragments and
packets and ARQ (Automatic Repeat reQuest), the BER of customer data is essentially zero.
Radio BER gives one indication of link quality. Other important indications to consider include
the received power level, jitter, and link tests. Radio BER is supported on FSK and OFDM radios.
BER is only instrumented on the downlink and is displayed on the BER Results tab of the Tools
page in any SM. Each time the tab is clicked, the current results are read, and counters are reset to
zero. An example of the BER Results tab is displayed in Figure 190.
Figure 190: BER Results tab of FSK SM, example