On 10 Feb, 2014, at 00:48 , Bruce Griffiths <[email protected]> wrote: > Instead of speculating try reading the specifications. > 1Hz phase modulation of the 10kHz output is present. > The receiver sawtooth error sample rate is 1Hz not 10kHz. > The 10kHz output signal phase is adjusted at a 1Hz rate by the receiver.
Ah, as soon as I pressed send for the last note I realized what you were likely telling me. Yes, the LEA-6T only provides you with a quantization (sawtooth) correction for 1 pps and no higher rate. At 1 pps you should pay attention to the digital correction (implying no analog-only implementation is possible; you minimally need the delay line thing) since the frequency of the saw tooth is often low enough to leak into the control response and the correction should make the sawtooth go away. All I was pointing out is that at a higher output frequency, like 10 kpps, the frequency of the quantization saw tooth error will almost always be much higher as well. There's no need for the digital correction since averaging over a relatively short period, like in the loop filter of an appropriate analog PLL, will almost always be sufficient to smooth the sawtooth. Dennis Ferguson _______________________________________________ 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.
