https://www.cablefree.net/support/radio/software/index.php?title=Manual:Spectral_scan&feed=atom&action=history
Manual:Spectral scan - Revision history
2024-03-28T09:28:09Z
Revision history for this page on the wiki
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https://www.cablefree.net/support/radio/software/index.php?title=Manual:Spectral_scan&diff=1295&oldid=prev
Administrator at 10:49, 25 June 2018
2018-06-25T10:49:59Z
<p></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 10:49, 25 June 2018</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The spectral scan can scan all frequencies supported by your CableFree radio, and plot them directly in console. Exact frequency span depends on the specific product and chipset used. Typical allowed ranges: [4790; 6085], [2182; 2549]. </div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The spectral scan can scan all frequencies supported by your CableFree radio, and plot them directly in console. Exact frequency span depends on the specific product and chipset used. Typical allowed ranges: [4790; 6085], [2182; 2549]. </div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Wireless card can generate 4us long spectral snapshots for any 20mhz wide channel. This is considered a single spectral sample. </div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">The </ins>Wireless card can generate 4us long spectral snapshots for any 20mhz wide channel. This is considered a single spectral sample. </div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>To improve data quality spectrum is scanned with 10mhz frequency increments, which means doubled sample coverage at each specific frequency (considering 20mhz wide samples). </div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>To improve data quality spectrum is scanned with 10mhz frequency increments, which means doubled sample coverage at each specific frequency (considering 20mhz wide samples). </div></td></tr>
</table>
Administrator
https://www.cablefree.net/support/radio/software/index.php?title=Manual:Spectral_scan&diff=1294&oldid=prev
Administrator at 10:49, 25 June 2018
2018-06-25T10:49:46Z
<p></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 10:49, 25 June 2018</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l9">Line 9:</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>To improve data quality spectrum is scanned with 10mhz frequency increments, which means doubled sample coverage at each specific frequency (considering 20mhz wide samples). </div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>To improve data quality spectrum is scanned with 10mhz frequency increments, which means doubled sample coverage at each specific frequency (considering 20mhz wide samples). </div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Currently this feature is supported only for Atheros <del style="font-weight: bold; text-decoration: none;">Merlin </del>chips. <del style="font-weight: bold; text-decoration: none;">(ie</del>. <del style="font-weight: bold; text-decoration: none;">AR9220, AR9280, AR9223</del>). </div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Currently<ins style="font-weight: bold; text-decoration: none;">, </ins>this feature is supported only for Atheros <ins style="font-weight: bold; text-decoration: none;">AR92xx, AR93xx and is NOT supported for Atheros 802.11ac </ins>chips <ins style="font-weight: bold; text-decoration: none;">(e</ins>.<ins style="font-weight: bold; text-decoration: none;">g</ins>. <ins style="font-weight: bold; text-decoration: none;">QCA98xx</ins>). </div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>These are generally the MIMO (N standard chipset) versions of products.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>These are generally the MIMO (N standard chipset) versions of products.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Non-MIMO products may not support this feature.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Non-MIMO products may not support this feature.</div></td></tr>
</table>
Administrator
https://www.cablefree.net/support/radio/software/index.php?title=Manual:Spectral_scan&diff=171&oldid=prev
Administrator at 11:24, 28 January 2015
2015-01-28T11:24:13Z
<p></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 11:24, 28 January 2015</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Line 1:</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{Versions|v4.3+}}</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{Versions|v4.3+}}</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Spectral Scan is a feature on MIMO versions of CableFree Carrier Class Radios featuring "N" and "AC" standard chipsets</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Spectral Scan is a feature on MIMO versions of CableFree Carrier Class Radios featuring "N" and "AC" standard chipsets<ins style="font-weight: bold; text-decoration: none;">. </ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"><br></ins></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The spectral scan can scan all frequencies supported by your CableFree radio, and plot them directly in console. Exact frequency span depends on the specific product and chipset used. Typical allowed ranges: [4790; 6085], [2182; 2549]. </div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>The spectral scan can scan all frequencies supported by your CableFree radio, and plot them directly in console. Exact frequency span depends on the specific product and chipset used. Typical allowed ranges: [4790; 6085], [2182; 2549]. </div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
</table>
Administrator
https://www.cablefree.net/support/radio/software/index.php?title=Manual:Spectral_scan&diff=170&oldid=prev
Administrator at 11:23, 28 January 2015
2015-01-28T11:23:35Z
<p></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 11:23, 28 January 2015</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Line 1:</td>
<td colspan="2" class="diff-lineno">Line 1:</td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{Versions|v4.3+}}</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{Versions|v4.3+}}</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>The spectral scan can scan all frequencies supported by your <del style="font-weight: bold; text-decoration: none;">wireless card</del>, and plot them directly in console. Exact frequency span depends on the specific product and chipset used. Typical allowed ranges: [4790; 6085], [2182; 2549]. </div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">Spectral Scan is a feature on MIMO versions of CableFree Carrier Class Radios featuring "N" and "AC" standard chipsets</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>The spectral scan can scan all frequencies supported by your <ins style="font-weight: bold; text-decoration: none;">CableFree radio</ins>, and plot them directly in console. Exact frequency span depends on the specific product and chipset used. Typical allowed ranges: [4790; 6085], [2182; 2549]. </div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Wireless card can generate 4us long spectral snapshots for any 20mhz wide channel. This is considered a single spectral sample. </div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Wireless card can generate 4us long spectral snapshots for any 20mhz wide channel. This is considered a single spectral sample. </div></td></tr>
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Administrator
https://www.cablefree.net/support/radio/software/index.php?title=Manual:Spectral_scan&diff=147&oldid=prev
Administrator at 17:18, 26 January 2015
2015-01-26T17:18:31Z
<p></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 17:18, 26 January 2015</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{Versions|v4.3+}}</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>{{Versions|v4.3+}}</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>The spectral scan can scan all frequencies supported by your wireless card, and plot them directly in console. Exact frequency span depends on <del style="font-weight: bold; text-decoration: none;">card</del>. <del style="font-weight: bold; text-decoration: none;">Allowed </del>ranges <del style="font-weight: bold; text-decoration: none;">on r52n</del>: [4790; 6085], [2182; 2549]. </div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>The spectral scan can scan all frequencies supported by your wireless card, and plot them directly in console. Exact frequency span depends on <ins style="font-weight: bold; text-decoration: none;">the specific product and chipset used</ins>. <ins style="font-weight: bold; text-decoration: none;">Typical allowed </ins>ranges: [4790; 6085], [2182; 2549]. </div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Wireless card can generate 4us long spectral snapshots for any 20mhz wide channel. This is considered a single spectral sample. </div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Wireless card can generate 4us long spectral snapshots for any 20mhz wide channel. This is considered a single spectral sample. </div></td></tr>
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Administrator
https://www.cablefree.net/support/radio/software/index.php?title=Manual:Spectral_scan&diff=146&oldid=prev
Administrator: Created page with "{{Versions|v4.3+}} The spectral scan can scan all frequencies supported by your wireless card, and plot them directly in console. Exact frequency span depends on card. Allowe..."
2015-01-26T17:17:54Z
<p>Created page with "{{Versions|v4.3+}} The spectral scan can scan all frequencies supported by your wireless card, and plot them directly in console. Exact frequency span depends on card. Allowe..."</p>
<p><b>New page</b></p><div>{{Versions|v4.3+}}<br />
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The spectral scan can scan all frequencies supported by your wireless card, and plot them directly in console. Exact frequency span depends on card. Allowed ranges on r52n: [4790; 6085], [2182; 2549]. <br />
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Wireless card can generate 4us long spectral snapshots for any 20mhz wide channel. This is considered a single spectral sample. <br />
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To improve data quality spectrum is scanned with 10mhz frequency increments, which means doubled sample coverage at each specific frequency (considering 20mhz wide samples). <br />
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Currently this feature is supported only for Atheros Merlin chips. (ie. AR9220, AR9280, AR9223). <br />
These are generally the MIMO (N standard chipset) versions of products.<br />
Non-MIMO products may not support this feature.<br />
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== Console == <br />
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=== Spectral History ===<br />
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[[File:Spectral-history.png|740px]]<br />
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<pre>/interface wireless spectral-history <wireless interface name> </pre><br />
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Plots spectrogram. Legend and frequency ruler is printed every 24 lines. Numbers in the ruler correspond to the value at their leftmost character position. Power values that fall in different ranges are printed as different colored characters with the same foreground and background color, so it is possible to copy and paste terminal output of this command.<br />
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*''value'' -- select value that is plotted on the output. 'interference' is special as it shows detected interference sources (affected by 'classify-samples' parameter) instead of power readings, and cannot be made audible.<br />
*''interval'' -- interval at which spectrogram lines are printed.<br />
*''duration'' -- terminate command after specified time. default is indefinite.<br />
*''buckets'' -- how many values to show in each line of spectrogram. This value is limited by the number of columns in terminal. It is useful to reduce this value if using 'audible'.<br />
*''average-samples'' -- Number of 4us spectral snapshots to take at each frequency, and calculate average and maximum energy over them. (default 10) <br />
*''classify-samples'' -- Number of spectral snapshots taken at each frequency and processed by interference classification algorithm. Generally more samples gives more chance to spot certain type of interference (default 50) <br />
*''range'' -- <br />
** 2.4ghz - scan whole 2.4ghz band<br />
** 5ghz - scan whole 5ghz band<br />
** current-channel - scan current channel only (20 or 40 mhz wide)<br />
** range - scan specific range <br />
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*''audible=yes'' -- play each line as it is printed. There is a short silence between lines. Each line is played from left to right, with higher frequencies corresponding to higher values in the spectrogram.<br />
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=== Spectral Scan ===<br />
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[[File:Spectral-scan.png]]<br />
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<pre> /interface wireless spectral-scan <wireless interface name> </pre><br />
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Continuously monitor spectral data. This command uses the same data source as 'spectral-history', and thus shares many parameters.<br />
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Each line displays one spectrogram bucket -- frequency, numeric value of power average, and a character graphic bar. Bar shows average power value with ':' characters and average peak hold with '.' characters. Maximum is displayed as a lone floating ':' character.<br />
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*''show-interference'' -- add column that shows detected interference sources.<br />
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Types of possibly classified interference:<br />
*bluetooth-headset<br />
*bluetooth-stereo<br />
*cordless-phone<br />
*microwave-oven<br />
*cwa<br />
*video-bridge<br />
*wifi<br />
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== The Dude == <br />
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The Dude is a free network monitoring and management program which is available from CableFree. <br />
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The Dude has a built-in capability to run graphical Spectral Scan from any of your RadioOS devices with a supported wireless card. Simply select this device in your Dude map, right click and choose Tools -> Spectral Scan. <br />
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[[File:Spectral1.png]]<br />
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This will bring up the Spectral Scan GUI with various options and different view modes: <br />
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[[File:Spectral2.png]]<br />
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[[Category:Manual]]<br />
[[Category:Wireless]]<br />
[[Category:Interface]]<br />
[[Category:Case Studies]]</div>
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