PC로 제어하는 AD9850 DDS 신호발생기
Connect the DDS Daughtercard to the parallel (printer) port of a PC,
turning the PC into the 'control panel" for your VFO.
How many ways can you use a self-contained, high-precision dc-30 MHz signal source
contained on a 1" x 2" plug-in circuit card? How about as a stand-alone VFO,
a signal generator for your bench, a replacement LO for your Sierra
or NC40 transceiver, or perhaps as the heart of an antenna analyzer!
Control it with your favorite microcontroller,
or even hang it off your PC's printer port. Any way you do it,
you'll be generating quality signals for under $20."
◆ DDS AD9850 Schematic
◆ DDS AD9850 PCB Top view
◆ DDS AD9850 PCB Bottom view
◆ With a PC
It can be easily wired to the printer cable on one's PC and a PC program
called SetDDS (by Doug Quaglianna, KA2UPW) serves as a VFO 'front panel".
We're working together on a more flexible program that will give lots more bells
and whistles, all settable from the mouse and screen of your PC.
This will be published soon in the form of an App Note on the DDS Daughtercard
◆ PC Control Software
◆ Download the program to run on Win 95/98
◆ web page (http://www.njqrp.org/dds).
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