Boonton 4540 Peak Power Meter User Manual - Manual (Page 48)

Boonton 4540 Series RF Power Meter
Getting Started 3-20
Note that this analysis does not depend upon any particular test signal, or upon synchronization with the modulating signal.
In fact, the analysis can be done using actual communication system signals. Normal operation is not disturbed by the need to
inject special test signals. This type of analysis is particularly suited to the situation in which the bit error rate (BER) or some
other error rate measure is correlated with the percentage of time that the signal is corrupted. If known short intervals of
clipping are tolerable, the CCDF can be used to determine optimum transmitter power output. The CCDF is also used to
evaluate various modulation schemes to determine the demands that will be made on linear amplifiers and transmitters and
the sensitivity to non-linear behavior.
Figure 3-8 CCDF Graphical Display