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When I try to generate an output signal in Signal Generate mode, the output drops off above 60 MHz. Is this correct?

April 26, 2017Drops MHz mode output signal Try

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When I try to generate an output signal in Signal Generate mode, the output drops off above 60 MHz. Is this correct?

1 Answer

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This is intentional. The Z90’s Direct Digital Synthesis signal source uses a 60 MHz low pass filter as an anti-alias filter and will sharply roll off signals above 60 MHz. An anti-alias filter is essential in the digital-to-analog conversion process to control spurious signals.