[time-nuts] opto coupler isolation?

Poul-Henning Kamp phk at phk.freebsd.dk
Sat Jan 3 17:27:00 EST 2009

In message <494882EB-D714-49B4-A7E2-BEF04509D7F4 at deriesp.demon.nl>, Henk ten Pi
erick writes:
>An opto coupler seems  good idea for an isolation amplifier but maybe  
>not for the phase noise.

Optocouplers have lousy dV/dt performance, so the jitter is

Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.

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