[time-nuts] FEI FE-5650A and FE5680A code
Mark Sims
holrum at hotmail.com
Tue Jun 10 17:41:27 EDT 2008
Attached is my program for calculating the frequency divisor words for the FEI FE-5650A and FE-5680A rubidium oscillators with the AD9830A based DDS board. It compensates for the difference between the R=reference freq that the 'S' command returns (the minimum C-field value) and the frequency that the oscillator was actually shipped tuned to.
The program does not actually read and write the serial port directly (would be a nice mod though). You will need to recompile it with the values returned by your oscillator 'S' command. There are two #defines at the start of the program.
Usage is:
freq 10 (for 10Hz)
freq 10 K (for 10KHz)
freq 10 M (for 10MHz)
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