Figure 2-1.
Envelope-delay-distortion test, block diagram.
(d) Relative delay is the calculated limits () of initial line
delays from the average delay.
(2) After equalization.
(a) Final line delay is the absolute (measured) delay in the line
under test.
(b) Secondary delay is the difference between maximum and minimum
final line delays.
(c) Reference delay is the average of maximum and minimum final
line delays; that is, the sum of the two delays divided by 2.
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