Arb Test Signals - R&S SGT100A User Manual

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R&S SGT100A
For some of the R&S SGT-K2xx/-K4xx options, Rohde & Schwarz provides also a
library containing some already generated waveform files.
●
R&S SGT-KVxx:
Additional waveform libraries are offered as R&S SGT-KVxx options. Such an
option allows you to process all waveform files included in the library.
For more information also on the required options, see the product page at
www.rohde-schwarz.com/product/SGT100A.html.
See also the Application Note 1MA28, "IQWizard - I/Q Signal Measurement and Con-
version".

ARB Test Signals

The following test signals are available:
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Sine test signal: Two sine wave signals with a selectable (but equal) number of
samples per period and equal frequencies. When the generation is triggered, the
number of samples per period, together with the frequency of the test signal, deter-
mine the ARB clock frequency: "Clock Frequency" = "Frequency" * "Samples per
Period".
Note: Because the resulting clock rate must not exceed the maximum ARB clock
rate (see data sheet), the number of sample values is automatically restricted
depending on the selected frequency.
The first sine signal is mapped on the I samples, the second on the Q samples.
The two signals differ by a selectable phase offset. For a –90 deg offset, the result
is a unit vector in the I/Q plane, rotating counter-clockwise and starting at I = 0, Q =
–1. For a 0 deg offset, the I and Q samples are on the diagonal of a unit square (I(t)
= Q(t)).
In general, the I/Q samples are located on a deformed circle which is confined to
the dashed square in the upper diagrams.
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Rectangular test signal: Rectangle signal with selectable but equal On and Off
periods and amplitude. The period is defined by the selected frequency: <Period>
= 1 / "Frequency".
The signal is mapped on both the I and Q samples. This results in two distinct
points in the I/Q plane. The "Offset DC" shifts both points along the diagonal I(t) =
Q(t).
User Manual 1176.8674.02 ─ 07
Signal Generator Settings
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