[net.micro] Does Power Line Noise Affect Printer or Modem?

wh@houxz.UUCP (W.HEINMILLER) (03/16/84)

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We've been having problems with	our Imagen I-10	printer	lately,	and would like
to know	if anyone else has had similar problems.  We have the Imagen hooked to
its host via a Bell Dataphone II 2096A,	and the	Imagen has version 1.8 ROMs.
The problem we've been having is the printer crashes randomly, sometimes in the
middle of a print job.	The modem usually exhibits a "failure" at the same
time.  (But then the modem often displays "failure" modes, and it doesn't
affect operation.) Usually the only way	we can recover the printer is to reboot
its processor.

The telephone company says the modem and telephone lines are OK.  The Imagen
service	folks say the Imagen is	OK.  The problem is usually worst during wet
weather.  We suspect a noisy power line	may be affecting either	the modem,
printer, or both.  Has anyone else had similar problems, and have power	line
filters	been a solution?  Does anyone know which of the	two (printer or	modem)
is more	sensitive to power line	noise?	I'd appreciate mail from anyone	with
suggestions or solutions.

	Wayne Heinmiller	Bell Communications Research
	houxz!wh		Freehold, NJ