Adding Noise and Predistortions, and Impairing the Signal
R&S
®
SMBV100B
271
User 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: 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"
1. To access the dialog with settings for the
analog
I/Q signal, select "I/Q Mod > Ana-
log Impairments".
Impairing the Signal
