Chris,
This e-mail raises an important point. Hard drives (such as those slated
for PCs) are NOT regarded as a component in the EU rules. In order to test
the applicability of the EMC directive some questions need to be applied.
1. What is the "end use"?
2. Is the product intended for to be marketed individually for
distribution?
3. Does it perform a "direct function"? Refer to the Guidelines for a
definition of direct function.
The hard drive (for PCs anyway) fullfills all the above requirements and as
such has to be CE marked.
Also in the Jan 1995 Guidelines Section 4.7.3.2 lists PC disk readers as a
component performing a direct function and indicates that they fall within
the scope of the EMC Directive.
Contact Seagate, Quantum or Maxtor. All these manufacturers CE mark their
drives.
Charles Grasso
EMC Engineer
StorageTek
Tel:(303)673-2908
Fax(303)661-7115
----------
From: Steve Chin[SMTP:[email protected]]
Sent: Monday, April 21, 1997 3:13 AM
To: [email protected]
Subject: Re: Certified Devices
Chris, none of the hard drive manufacturers certify that their mechanisms
are Class B compliant. Just like a motherboard or power supply, the hard
drive is considered a component.
My company produces a wide variety of storage peripherals, and most of
the drive manufacturers in the past have pretty much left companies like
mine in the lurch where EMC compliance is concerned. They have been
getting better (from a customer standpoint) at this lately, so most of
what you'll find out there now will pass the Class B limits with some
margin, provided you have a good host to start with, good power supplies,
and reasonable filtering/shielding.
None of the views expressed in this message intentionally represent those
of any being, living, dead, or corporate. They are mine and mine alone.
Steve Chin
Compliance Engineer
StreamLogic Corp.
Menlo Park, CA, USA
[email protected]
Chris Herkey ([email protected]) wrote:
>Does anyone know where a list of hard drives that are certified class B
and
>CE might be found? Or perhaps someone knows of a manufacturer?
>
>I need singled-ended and differential SCSI drives...
>
>Thank you,
>
>Chris Herkey
>
