Hi, Bob since has explained how the 1.0001 MHz are generated. My Austron uses a Xtal filter. If you want a scan of the circuit contact me direst. The resulting 100 Hz out of the D F/F results in a high resolution representation. 1 Hz is equal to 1E 6. If you now count the 100Hz with a counter that has a recipical mode like the 5345, 5335 or Racal Dana 1992 you easily get 1 E-12 resolution or better. Bert In a message dated 7/26/2010 10:35:53 A.M. Eastern Daylight Time, [email protected] writes:
Sorry Bert, I don't follow the last part about the 100Hz - can you explain further please? (and is that 100.00 or 100.01 Hz?) Peter On 26 July 2010 14:27, <[email protected]> wrote: > Hi, > ten years ago not having a super counter I copied the input circuit of > the Austron 2110 that using an XOR gate mixes 5 MHz with 500 Hz getting > 5.0005 MHz. It is devided down to 1.0001 Mhz which in turn is mixed in 74 HC 74 > D F/F giving 100 Hz, that most counters are able to count at high > resolution. Still use it today. May be a time-nuts project. > Bert Kehren _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
