Ulrich, At 7:57 AM +0000 12/22/08, [email protected] wrote: > >Message: 7 >Date: Mon, 22 Dec 2008 08:56:55 +0100 >From: "Ulrich Bangert" <[email protected]> >Subject: Re: [time-nuts] Sub Pico Second Phase logger >To: "'Discussion of precise time and frequency measurement'" > <[email protected]> > >Joe and Bruce, > >> Ulrich has built a circuit that takes a sampling frequency >> input derived from a 10MHz GPSDO output and produces an >> S/PDIF output for this application. Its certainly worth >> trying since all the specs for the sound card aren't readily >> available. > >I use a cheap and easy to use CRYSTAL CS8402 S/PDIF transmitter to >generate the S/PDIF signal for the sound card. Data input just tight to >ground. The balanced output is done with a Minicircuits T1-1T >transformer. The chip needs an 12.844 MHz clock for 96 kHz sample rate >and 6.144 MHz for 48 kHz sample rate. However, these two frequencies are >generated by an old HP3330 locked to 10 MHz in my case. If the circuit >had to be designed new I would have used a ANALOG DEVICES dds circuit >with a built in clock multiplier.
Thanks for the pointer. I'll look at the datasheet of the CS8406, which replaces the CS8402. <http://www.cirrus.com/en/products/pro/detail/P1009.html> Joe _______________________________________________ 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.
