Adding noise and predistortions, and impairing the signal
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SMM100A
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User Manual 1179.1341.02 ─ 05
Figure 5-6: I offset (left) and Q offset (right) in the I/Q constellation diagram
5.2.2.3
Quadrature offset
Changes the phase angle between the I and the Q vectors from the ideal 90 degrees,
while the amplitudes are maintained. A positive quadrature offset results in a phase
angle greater than 90 degrees. The effect of a positive quadrature offset in the I/Q con-
stellation diagram is shown on
Figure 5-7: Positive quadrature offset in the I/Q constellation diagram
5.2.3
Analog and digital impairments settings
You can add digital impairments to each internal generated I/Q stream and analog
impairments to internal generated or external supplied analog I/Q signals
See also
Chapter 5.2.2, "About the linear I/Q impairments"
1. To access the dialog with settings for the
analog
I/Q signal, select "I/Q Mod > Ana-
log Impairments".
Impairing the signal
