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Upstream RF Troubleshooting

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Group Delay<br />

• From the IEEE Standard Dictionary of<br />

Electrical and Electronics Terms:<br />

<strong>Upstream</strong> <strong>RF</strong><br />

<strong>Troubleshooting</strong><br />

Group delay is “the derivative of radian phase<br />

with respect to radian frequency. It is equal to<br />

the phase delay for an ideal non-dispersive<br />

delay device, but may differ greatly in actual<br />

devices where there is a ripple in the phase<br />

versus frequency characteristic.”<br />

© 2003, Cisco Systems, Inc. All rights reserved.<br />

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