Yes, I forgot about those. If I remember correctly, a -20 option has DDS. It's sometimes hard to tell which one you have without opening it up. My 5680A came from an EBay auction where the seller claimed it was programmable. It wasn't. It has the non-DDS 10 Mhz sine output. However, I think that if the pot is installed, you have an adjustable C-field. I'm not positive about this, though. Bill Ezell ---------- They said 'Windows or better' so I used Linux.
Brian Kirby wrote: There are several models of the 5680A. A lot use the DDS circuits to set the output frequencies and they do not have C field adjustments. Brian - KD4FM wje wrote: Unless you can measure the frequency to at least a few parts in 10e10, you won't see any change. These devices are far more precise than standard frequency counters. You either need something like an HP 5370 or 5371 to measure the difference, or another equally precise oscillator to compare against using a phase meter or your oscilloscope. Bill Ezell ---------- They said 'Windows or better' so I used Linux. Rex wrote: Have you adjusted it? I tried tweaking that pot on one I had and I didn't see any effect. wje wrote: There's a small hole on the side of the case. This is the trimmer access, at least on mine. Bill Ezell ---------- They said 'Windows or better' so I used Linux. EMMANOUIL MANTZARAS wrote: Hi Is there any one that knows where is the c-field trimer in the FE-5680A board ?? Thanks sv1bke _______________________________________________ time-nuts mailing list -- [EMAIL PROTECTED] To unsubscribe, go to [2][2]https://www.febo.com/cgi-bin/mailman/listinfo/time-n uts and follow the instructions there. References 1. [3]mailto:[email protected] 2. [4]https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts _______________________________________________ time-nuts mailing list -- [EMAIL PROTECTED] To unsubscribe, go to [6]https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- [EMAIL PROTECTED] To unsubscribe, go to [8]https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. References 1. mailto:[EMAIL PROTECTED] 2. https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts 3. mailto:[email protected] 4. https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts 5. mailto:[email protected] 6. https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts 7. mailto:[email protected] 8. https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
