There's no manual fine-tuning adjustment on the 10811A, which is something I've always found strange. The trimmer that is present is arguably far too coarse. I've owned 10811As that would stay put within a couple parts in 1E-10 per year, but setting them to that degree of precision was a real pain.
They do have an EFC control line, though, which the 5345A uses to phase-lock to the external 10 MHz input. (Unlike, say, the 5370B, which just substitutes the external 10 MHz signal for the OCXO's own.) -- john, KE5FX > I just picked up a 5345A from eBay. This unit has a 10811 > oscillator instead of the 10544 depicted in the manuals I have. > The serial number has been removed. Does anyone know if there is > an EFC adjustment for this counter or is the course control the > only way of setting frequency? > Colin > _______________________________________________ time-nuts mailing list [email protected] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
