Chapter 4 Troubleshooting the System
Setting Downstream Test Signals
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Syntax | Valid Values |
n | Specifies the upstream port number. |
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averaging | Specifies that a percentage of frequency adjustment packets is |
| required to change the adjustment method from the regular power |
| adjustment method to the noise power adjustment method. |
%of frequency adjustment Specifies the percentage of frequency adjustment packets required to switch from the regular power adjustment method to the noise power adjustment method. Valid range is from 10 through 100 percent.
The following example shows how to change the power adjustment method when the frequency adjustment packet count reaches 50 percent:
Setting Downstream Test Signals
This feature provides configuration commands that allow you to create downstream test signals. Both Pseudo Random Bit Stream (PRBS) and unmodulated carrier test signals are now supported.
A PRBS test signal is a random data pattern that has been modulated to look like a real data stream. An unmodulated test signal is a continuous sine wave that looks like a carrier wave on the downstream transmission.
See the following required tasks to create PRBS and unmodulated carrier test signals:
•Configure Unmodulated Test Signals
•Configure PRBS Test Signals
Configure Unmodulated Test Signals
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| interface to resume normal |
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Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide
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