Instrument Function
R&S
®
SMBV100A
256Operating Manual 1407.6062.32 ─ 08
Fig. 5-16: Effect of a negative quadrature offset
SCPI command:
[:SOURce<hw>]:BB:IMPairment:QUADrature[:ANGLe] on page 588
I/Q Skew - Digital Impairments
Sets the time offset between the I and Q vectors.
In an I/Q modulator without I/Q skew, the I and Q vectors are aligned to the marker. With
an I/Q skew, both vectors are shifted relative to the marker so that the offset of each of
the vectors to the marker will be the half of the I/Q skew value.
A positive I/Q skew means that the Q vector delays relative to the I vector and vice versa.
SCPI command:
[:SOURce<hw>]:BB:IMPairment:SKEW on page 589
IQ Delay
Sets the time delay of both I and Q vectors relative to the selected trigger and marker or
relative to the other instrument(s) working in the master-slave synchronous mode (see
chapter 5.8.2.4, "Synchronous Signal Generation", on page 277).
A positive value means that the I and Q vectors delay relative to the marker/trigger or to
the other instrument and vice versa.
SCPI command:
[:SOURce<hw>]:BB:IMPairment:DELay on page 586
Impairment of Digital I/Q Signal and Noise Generator - AWGN/IMP Block
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