Instrument Function
R&S
®
SMBV100A
239Operating Manual 1407.6062.32 ─ 08
5.5.2.2 Impairments
I/Q impairment for specific impairment of the I/Q modulation is set in the "Impairments"
section.
State - Impairments I/Q Mod
Activates/deactivates I/Q impairment.
If activated, the settings for leakage, I/Q imbalance and quadrature offset become effec-
tive.
Whether or not I/Q impairment is activated is indicated in the function block.
Note: It is advisable to switch automatic level control to the Sample&Hold mode, as oth-
erwise level errors may occur (see chapter 5.4.9, "Automatic Level Control -
ALC", on page 178).
SCPI command:
[:SOURce<hw>]:IQ:IMPairment[:STATe] on page 639
Offset - I/Q Mod
Sets the carrier offset (in percent) of the amplitudes (scaled to the peak envelope power
(PEP) for the I and/or Q signal component.
An ideal I/Q modulator suppresses the carrier offset completely (offset = 0 percent). If an
offset value is entered for a component, a carrier offset with fixed amplitude is added to
the signal. In the diagram, all I values or Q values are offset by a fixed amplitude value
depending on the entered percentage.
I/Q Modulation - I/Q Mod Block
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