Instrument Function
R&S
®
SMBV100A
249Operating Manual 1407.6062.32 ─ 08
5.6.1 Impairments
Impairment of the digital I/Q signal can be used, for example, to compensate the distortion
of a test object or to check the effect of a disturbed signal on a test object. For this purpose,
the I/Q signal can be output at the I/Q OUT outputs. On the other hand, the I/Q impair-
ments used internally for compensating signal distortion can be deactivated by the I/Q
modulator in order to, for example, test its own baseband components.
In addition to impairment of the digital I/Q signal, the R&S SMBV also allows impairment
of the analog signal to be set in the I/Q modulator. The relevant settings are made in the
I/Q Mod function block (see chapter 5.5, "I/Q Modulation - I/Q Mod Block", on page 235).
5.6.1.1 Impairment Settings Menu
To access the "Impairment Settings" menu for setting the digital I/Q impairments, select
"AWGN/IMP > Configure > I/Q Impairements" or use the MENU key under "AWGN/
IMP".
I/Q impairment is activated and set in the "I/Q Impairments" section.
"Internal compensation" of signal distortions of the RF output can be activated / deacti-
vated.
I/Q Impairments
In the "I/Q Impairments" section the parameters for carrier leakage, imbalance and quad-
rature offset can be set and I/Q impairment is activated.
State - Digital Impairments
Activates/deactivates digital I/Q impairment.
Impairment of Digital I/Q Signal and Noise Generator - AWGN/IMP Block
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