Adding Noise and Predistortions, and Impairing the Signal
R&S
®
SMBV100B
271User Manual 1178.4460.02 ─ 03
Figure 4-6: I offset (left) and Q offset (right) in the I/Q constellation diagram
4.2.2.3 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 4-7.
Figure 4-7: Positive quadrature offset in the I/Q constellation diagram
4.2.3 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 4.2.2, "About the Linear I/Q Impairments", on page 269.
1. To access the dialog with settings for the analog I/Q signal, select "I/Q Mod > Ana-
log Impairments".
Impairing the Signal
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