On 12/27/2010 05:53 PM, Poul-Henning Kamp wrote:
Alma #511 has an interesting trick for phase comparison: two counters, an adder and a DAC... http://science.nrao.edu/alma/aboutALMA/Technology/ALMA_Memo_Series/alma511/abs511.shtml
This trick is known from literature (such as Wolaver) and is comparable to dividing the frequencies down. I've used that trick myself in several designs. As the detector phase range becomes significantly larger, border formulas needs to be adapted. The pull in and lock in range will become larger.
Cheers, Magnus _______________________________________________ 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.
