The Cranky Sysadmin A world of technology, fun, and ignorant rants.

February 23, 2013

Two DDS Modules Have Arrived!

Filed under: Arduino,Electronics — Cranky Sysadmin @ 7:57 pm

I ordered two new AD9850 DDS modules from Amazon. They were shipped from China and arrived in about two weeks. For a quick test, I followed the instructions from N8RO. Both modules seem to work. According to my ancient but still seemingly accurate Fluke frequency counter, one module was off by about 100 hz at 10MHz, and the other was off by about 208hz. Each module will output a nice sine wave up to 40 mhz. Above that, the signal gets really small, and the wave form gets wonky looking. Since antenna analyzers need a signal generator, my next step is to breadboard out one with a DDS module, a rotary encoder, an LCD, and some push button switches.

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