> Yes, exactly those. With no input, would they be expected to be 4 kHz off? > The spec for the standard part wants the input to be within 1e-7. I would > not expect them to be so far off free running.
That does seem like a lot. I'd expect a few hundred Hz of error at the most. > I saw 13 MHz on the 500-14273 and stayed away from those. > > Do you know of any part numbers that use 10 MHz in? Wenzel would not tell > me the exact specs of the 500 series parts available on ebay and only sent > me the specs for the standard 501-14057 that takes 10 MHz. Most of the 100 and 200 MHz bricks I've seen work with either 5 or 10 MHz . I don't know if I've seen any 80 MHz units that do. All of the ones I've bought on eBay have been from the customer-proprietary 500- series with unusual input frequencies. > Do you know what the pll lock output does when the input frequency is off? > These toggle high for any frequencies I have put in. Not offhand. If there's a PFD inside it should be easy to zero in on the right frequency, but if there's only a phase detector you may need to set up a sweep and watch the tuning-voltage output on a scope. I don't remember it taking very long to find the correct input frequencies for the ones I bought, though. -- john, KE5FX Miles Design LLC _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
