The 'new' guidelines on interpreting the EMC directive allow for the
integration of multiple CE marked products without having to retest the
full system. The caveat in that however is that the CE marking must be
"relevant". That is, the original CE mark must have been applied based
on tests which are equivalent to the environment that you are planning
for the system.

The fact that you say the printers "were not designed for these severe
spikes..." indicates that they were NOT marked based on relevant
standards. You must therefore fully test them in accordance with the
appropriate standards as part of your system.


Bob Martin, PE, NCE
EMC Department Manager
ITS-Boxborough
(508)263-2662
(508)266-1870 fax
r...@inchqs.com
______________
The views expressed are my own and not necessarily those of my employer.
 ------------------------
 ----------
From: jlovell%mfg.trim...@ngmsmtp.trimble.com
To: emc-p...@ieee.org
Subject: CE Mark product standards for purchased equipment
List-Post: emc-pstc@listserv.ieee.org
Date: Monday, March 10, 1997 2:07PM


Hi,

We are producing a product for use in marine navigation. It is an
intentional transmitter, so we are getting it type-approved by a
notified
body, the DRA in the UK. DRA has told us ETS300339 is the relevant
product standard. ETS300339 calls for most of the usual emissions and
immunity tests such as EN55022 and IEC1000-4-x, but it also calls for
testing to ISO7637, an automotive spike and surge immunity standard.

The system will ship with a choice of printers that are DC-powered at 12
to 24 volts and that are purchased CE-marked from a reputable printer
manufacturer.

My question is: do these off-the-shelf printers have to comply with
ISO7637 because they are part of this larger system, or can they stand
alone with their current CE marking? The printers were not designed for
these severe spikes and surges and will likely fail.

 ------------------------------------------
John Lovell
Director of Quality
Trimble Navigation Ltd.
+408-481-2012 Voice
+408-481-8194 FAX
john_lov...@trimble.com
 ------------------------------------------

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