[time-nuts] Off the wall: anyone with experienceprogrammingHP3456A?
phk at phk.freebsd.dk
Sat Sep 10 17:26:57 EDT 2005
In message <20050910.232445.04090152.cfmd at bredband.net>, Magnus Danielson writes:
>> This is less of a problem with modern CMOS based interface chips.
>Actually, there you end up in another problem, you power the box through the
>protection diodes which you really must have for CMOS. So it is really not so
>much better, just different.
This doesn't happen in any of the designs I've seen. They basically have
a FET in series with the line and when the instrument is OFF, it is really
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG | TCP/IP since RFC 956
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Never attribute to malice what can adequately be explained by incompetence.
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