Warning: Undefined variable $s in /var/www/public_html/osl/classes/DAO.php on line 959
NAOJ GW Elog Logbook
LOG-IN
Displaying report 1-1 of 1.
R&D (FilterCavity)
Print this report.
YuhangZhao - 22:38, Monday 13 November 2017 (592)Get code to link to this report
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.
Images attached to this report
592_20171114050726_frequenyresponse.png