Verifying Cable Modem Levels
Posted by George Chu on 10 April 2013 08:11 PM

Verifying Cable Modem Levels


Quick Reference

Cable Signal Ranges
If the modem levels are outside of these ranges, you should troubleshoot for RF as this would indicate a signal issue that would need to be resolved before any other issue

Modem Power: Rx ( Downstream / Forward Path )

Modem Power: Tx ( Upstream / Return Path )

Signal to Noise ( SNR )

Between: -15 dBmV to +15 dBmV.

Between: +35 dBmV to +52 dBmV.

Greater than: 25 dB.

Motorola SB5101/Motorola SB5102

Ask the customer to type in their web browser. There is no username/password required. Once they have loaded the page, ask them to go to the "Signal" page

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