I am finally getting to time to attend to my second HP5065A which never really worked reliably since I found it on eBay.
The root-cause is now fixed, the digital divider part of the synthesizer was unstable, because of the unobtanium one-shot being unstable. I replaced the entire digital divider part with a LPC810 chip, which can do the job admirably with its PWM output. So now I am going through the entire unit and checking/tuning as I go. Has anybody given any thought to how the tuning procedures can be improved with access to more modern instruments ? I'm particular interested if anybody know how to measure the S/N using a HP8568B or HP3577A ? I'm also wondering if a digital oscilloscope can monitor the phase splitting a better way than with the X-Y mode display ? -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [email protected] | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
