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Keysight M8190A - Digital Up-Conversion Modes

Keysight M8190A
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Digital Up-Conversion 4
M8190A User’s Guide 129
4.1.2 Digital Up-Conversion Modes
In these modes (see Option -DUC), IQ sample pairs provided by the sample data
generation are interpolated to the actually selected sample rate and are fed to the IQ
modulator. The result is sent to the DAC. The benefits are:
Efficient utilization of the sample memory, which is part of the sample generation
unit.
No distortions caused by an external analog IQ modulator.

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