[time-nuts] Question concerning failure and value of HP 5371A

Poul-Henning Kamp phk at phk.freebsd.dk
Sun Oct 16 13:52:47 EDT 2005

In message < at pop.fast.net>, buehl writes:

>Even at the 200 MHz rate, the very high 
>transition time of the input pulses required that the circuit be "clean" at 
>1 GHz.

It used to be a rule of thumb that analog circuits should have 8
times the bandwidth of any squarewave to be handled such that the
3rd, 5th and 7th overtones were intact.

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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