In message <[EMAIL PROTECTED]>, Magnus Danielson writes: >> Consider adding a D/A converter for tweaking OCXO. Using the two-tier >> trick which SRS uses in the PRS10 may be a good and cheap way. > >two-tier trick? Lacking the PRS10 schematics/service manuals...
They have two 12 bit D/As which are summed through a 1:1000 network to give around 20 bits of effective resolution at the cost of some discontinuities. Because the ratio is only a quarter of the full ratio of the individual D/A's, they can always center the interresting range in the lower D/A's range. -- 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 time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
