Control your AD9850 DDS with Windows XP/2000

An open source project for controlling the AD9850 DDS IC from Analog Devices under Windows 2000/XPWindows. At the NJQRP page there's a cheap kit for a simple DDS controled by a PC. But the software they mention is for Win95/98 only. The problem is that there's no way to control the parallel port under the newer operating systems directly.

So we created a Delphi Software for controlling the Analog Devices DDS Synthesizer AD9850 under Windows 9x/ME/2000/XP via the parallel port. You may use it as a high-precision dc-60 MHz signal source contained on a single chip.

We put the source under the GPL and released an initial version at the Sourceforge page:

http://sourceforge.net/projects/ad9850-control/

where you may download the binary executable package - and the source code.

Download statistic for the last months (MB/downloads):

One of the main problems was to gain access on the hardware layer to the system's LPT port under Win XP and 2000. This was done using the external INPOUT32.DLL from http://www.logix4u.cjb.net/ another problem was the documention of the "tuning word" you have to send to the IC. But this was finally found in the Data Sheet suplied by Analog Devices. Look at uHaupt.pas source for details on that topic.

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