NAOJ GW Elog Logbook 3.2
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YuhangZhao - 22:38, Monday 13 November 2017 (592)
Measurement of frequency response of DDS
As we will use Direct Digital Synthesizer(DDS) to generate signal in the future. We need to know its feature. We take advantage the Agilent Technologies E8257C(signal generator) and the Hewlett Packard 8563E(spectrum analyzer) to check DDS's output for different frequency. We use E8257C as a clock for DDS, the frequency is 500MHz and the amplitude is 0dBm.
We can see from the figure attached that DDS has something like a low pass filter inside.
We can see from the figure attached that DDS has something like a low pass filter inside.
Images attached to this report
