A PC CONTROLLED DDS FREQUENCY GENERATOR
One of my problems is requiring a very stable RF signal source and nowadays on the market are the DDS chips that can produce very accurate Frequency and Phase but need to be controlled by a u/P.... One such device is the AD9850 surface mount...... This is still under development at my end....
I have produced a Visual Basic program to display all the Controls such as AM,FM,Mod depth, Frequency and stored Commonly required Frequencies I have Enclosed the onboard PIC16C84 Software and the VB.EXE file to have a play with it ran under VB-Version 5.... G3RFL
The above is the PCB showing the Development PCB and with extra Manual buttons
This is a Camera Shot of the PC Control Panel
This picture just gives you an idea how small these chips are this is the Development PCB