Promax 25 Manual De Instrucciones página 82

Figure 25 shows the other signal (Q in quadrature) on a vertical axis to consider
the 90° phase change.
Figure 26 shows the combination of these two signals. This image constitutes
the Constellation Diagram of the modulated digital signal.
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Figure 26.- I-Q states combination
USER'S MANUAL. PROMAX-25
09/2004