In message <[EMAIL PROTECTED]>, [EMAIL PROTECTED] tmail.com writes: >1. there is the unit is putting voltage to the electronic cfield connector >of the rb oscillator.
It is not unlikely that there is a DAC for that voltage so that factory and field calibrations can be done from a remote location. The Rb is what telecoms people call "a green light box": You mount it, plug it in, see the light turn green and you're done. The Rb is inside spec for the telco application without discipline and therefore adding discipline would reduce the MTBF of the Rb, since a failure in the source, PLL or DAC would result in it going off spec. It is probably possible to monitor the Rb/GPS delta-T remotely, and _maybe_ they will manually tweak the C-field DAC once per year or so. They like Cs even better than Rb, because they are guaranteed inside spec for 10 years, provided the green light doesn't turn off. -- 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] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
