[time-nuts] Electronics Question

[Poul-Henning Kamp]

In message <1401727327-1311800995-cardhu_decombobulator_blackberry.rim.net-1457
183595- at b12.c1.bise6.blackberry>, lists at lazygranch.com writes:

>As a side note, these 232 chips have jitter in both the receive
>and transmit path.

It is also not uncommon to see serious tempcos on the delay
through the chip.

This is one major source of wander in the "remote" style GPS
receivers, where the signal is wired down with RS232 or RS422.

It's a bit hard to quantify or measure this:  If you put the receiver
in an temp-chamber, it won't receive anything and if you measure
it over a year, you need a Cs to measure against.

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
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