[SI-LIST] : EMC quiet serial device???

Roland F. Portman ([email protected])
Tue, 09 Feb 1999 11:35:03 -0800


This group may not be the best place to ask for this type of information, but
I am sure many of you
are involved in the area of EMC besides SI.

I have a new product which resides inside a workstation (mini-tower). The PC
and our product within
passes FCC/CE class B with plenty of margin, however the standard requires
that a 'Typical System' pass Class B.
This system includes not only the mini-tower, monitor, keyboard, and mouse,
but also a perpherial connected
to the parallel port (a printer in our case) and a perpherial connected to the
serial port (an external modem in our case). We have tried two different
modems. Both cause us to fail Class-B. If we turn them off the problem
goes away.

Can someone suggest a serial device (mfg and model) which they know to be EMC

Your help is greatly appreciated. For those of you who are similarly
interested, I will post a single summary
to this new-group.

Thanks in advance,


Roland F. Portman
BiT Microsystems, Inc.
48499 Milmont Drive
Fremont, CA  94538

(510) 623-2341 Ext 129 (510) 623-2342 Fax

[email protected] http://www.bitmicro.com

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