Upstream RF Troubleshooting
Upstream RF Troubleshooting
Upstream RF Troubleshooting
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Six-Foot Plant<br />
<strong>Upstream</strong> <strong>RF</strong><br />
<strong>Troubleshooting</strong><br />
<strong>Upstream</strong><br />
CMTS<br />
Downstream<br />
10 dB to<br />
15 dB<br />
atten.<br />
30 dB<br />
atten.<br />
© 2003, Cisco Systems, Inc. All rights reserved.<br />
Upconverter<br />
+25 to +35 dBmV<br />
I.F. input<br />
33 dB<br />
atten.<br />
Cable modems<br />
+55 to +58 dBmV<br />
<strong>RF</strong> output<br />
High<br />
Low<br />
8-way splitter<br />
Diplex filter<br />
Common<br />
10 dB<br />
atten.<br />
50
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