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DISH SETUP: Single sat, Multi-Sat & Motorised
Satellite Meters and Installation Equipment
Whats a good BER reading
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<blockquote data-quote="satelliteman" data-source="post: 776214" data-attributes="member: 255812"><p>BER, (Bit error rate), measured on most meters <strong>pre and post – Viterbi</strong>, also labeled as <strong>CBER and VBER or bBER and aBER.</strong> A reading of <strong>2e-4</strong> is the absolute minimum <strong>post – Viterbi</strong> measurement you should be achieving. Any worse will exceed the ability of the Reed Solomon error correction.</p><p></p><p>The Satlook G2 for example shows one BER measurement, which is pre– Viterbi / bBER.</p><p></p><p>MER, Modulation error ratio is the relation between the average signal power and the average power of noise present in the constellation.</p><p>MER for QPSK MPEG2 minimum 9dB, typical 12dB for 2/3 FEC, minimum 13dB, typical 16dB for 5/6 FEC.</p><p></p><p>SNR measurments, FEC Rate 1/2 = Threshold rate 3.6 dB, FEC Rate 2/3 = Threshold rate 4.2 dB, FEC Rate 3/4 = Threshold rate 4.9 dB, FEC Rate 5/6 = Threshold rate 5.2 dB, FEC Rate 7/8 = Threshold rate 8.2 dB</p><p></p><p>Signal power / dB, typically measured as dBuV, minimum 52dBuV, maximum 78dBuV.</p><p></p><p></p><p>Some of the above copied over from my <a href="http://www.satellites.co.uk/forums/blogs/satelliteman/emitor-satlook-micro-g2-nit-demo-239" target="_blank">Blog</a></p><p></p><p>See also: <a href="http://www.satellites.co.uk/forums/satellite-meters-installation-equipment/170111-satlook-micro.html#post908804" target="_blank">this post</a></p><p></p><p>..and further reading _http://www.webopedia.com/TERM/B/BER.html</p></blockquote><p></p>
[QUOTE="satelliteman, post: 776214, member: 255812"] BER, (Bit error rate), measured on most meters [B]pre and post – Viterbi[/B], also labeled as [B]CBER and VBER or bBER and aBER.[/B] A reading of [B]2e-4[/B] is the absolute minimum [B]post – Viterbi[/B] measurement you should be achieving. Any worse will exceed the ability of the Reed Solomon error correction. The Satlook G2 for example shows one BER measurement, which is pre– Viterbi / bBER. MER, Modulation error ratio is the relation between the average signal power and the average power of noise present in the constellation. MER for QPSK MPEG2 minimum 9dB, typical 12dB for 2/3 FEC, minimum 13dB, typical 16dB for 5/6 FEC. SNR measurments, FEC Rate 1/2 = Threshold rate 3.6 dB, FEC Rate 2/3 = Threshold rate 4.2 dB, FEC Rate 3/4 = Threshold rate 4.9 dB, FEC Rate 5/6 = Threshold rate 5.2 dB, FEC Rate 7/8 = Threshold rate 8.2 dB Signal power / dB, typically measured as dBuV, minimum 52dBuV, maximum 78dBuV. Some of the above copied over from my [URL="http://www.satellites.co.uk/forums/blogs/satelliteman/emitor-satlook-micro-g2-nit-demo-239"]Blog[/URL] See also: [URL="http://www.satellites.co.uk/forums/satellite-meters-installation-equipment/170111-satlook-micro.html#post908804"]this post[/URL] ..and further reading _http://www.webopedia.com/TERM/B/BER.html [/QUOTE]
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DISH SETUP: Single sat, Multi-Sat & Motorised
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Whats a good BER reading
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