Nautel NX25, Operation And Maintenance Manual

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NX300 Operations and Maintenance Manual Operating the transmitter
Issue 3.0 2012-11-01 Page 2-41
Figure 2.27: Power Distribution Graph
Power distribution graph.
See Figure 2.24 . The exciter measures the relative power levels of the
signal and determines the probability of exceeding a given power level, relative to the average power.
The data is plotted in the
Power Distribution Graph
as a CCDF (complementary cumulative
distribution function). The x-axis displays the relative power level in dB, with the reference
representing the average power. The y-axis displays the probability of exceeding that power level. This
graph can be used to assess the distribution of a given signal, and provides an indication of the
amount of peak power capability required.
Touch on the panel to display a cursor in the approximate area on the trace. The cursor position
(power gain and probability) is noted in the upper, right-hand corner of the panel. Touch in other
areas of the tool menu panel to provide a coarse adjustment of the cursor position.
Use the left and right buttons to make fine adjustments.
Use the up or down button to maximize (if it was minimized) or minimize (if it was maximized) the
panel size.
Cursor
Left
Cursor
Right
Close
Minimize
(Maximize)