Deal All,
This trace of e-mail messages just shows that a very careful read of a not
very well written series of Bellcore standards is absolutely required to
understand the whole. I apologize if I, in my hurry to respond, led anyone
astray regarding UL1950/60950 safety testing. In our case this was a
definite requirement. A few other points I would like to reinforce:
* In my 15 years of dealing with NEBS requirements and customers, not a
single customer was
willing to waive NRTL safety Listing.
* All required Level 3 compliance and, as mentioned earlier, some RBOCs
(Regional Bell Operating Companies, for those who are unfamiliar with the
Acronym) have their own Checklists with additional (more gruesome)
requirements.
* It is absolutely essential that you constantly communicate with your
RBOC customer;-- some state that they want to witness all or some of these
tests!
Tania Grant
[email protected]
----- Original Message -----
From: "Peter Tarver" <[email protected]>
To: <[email protected]>
Cc: "Joe Finlayson" <[email protected]>; "'Peter Merguerian'"
<[email protected]>; "'Tania Grant'" <[email protected]>; "Michelle Cho
/ INT Compliance" <[email protected]>
Sent: Friday, February 15, 2002 8:31 AM
Subject: RE: [URGENT] Need some information about NEBS..
> Joe -
>
> Your statement is not in all cases.
>
> Please refer to GR1089, 4.5.3, R4-3, -4, -5, 4.6.1, and
> CR4-29
>
> Although not a requirement, refer also to 4.5.13, Item 10,
> related to R4-18.
>
> Regards,
>
> Peter L. Tarver, PE
> Product Safety Manager
> Sanmina-SCI Homologation Services
> [email protected]
>
>
> -----Original Message-----
> From: Joe Finlayson
>
> Peter,
>
> NRTL Listing is not a requirement for CO equipment per
> GR-1089 although every one of our customers (CO's) requires
> it. You'd meet the requirements of the standards but you'd
> have a tough time selling it.
>
> Thx,
>
>
> Joe
> -----Original Message-----
> From: Peter Merguerian
>
> Tania,
>
> Your state that NEBS requires UL1950 safety testing. This
> may be true for CPE but not equipment sitting at the CO.
> Please correct if I am mistaken.
>
> This e-mail message may contain privileged or confidential
> information. If you are not the intended recipient, you may
> not disclose, use, disseminate, distribute, copy or rely
> upon this message or attachment in any way. If you received
> this e-mail message in error, please return by forwarding
> the message and its attachments to the sender.
>
> PETER S. MERGUERIAN
>
> -----Original Message-----
> From: Tania Grant
>
> Michelle,
>
> I am providing you with a generic test matrix of several
> years back of an actual product that underwent NEBS
> compliance testing. I have stripped out any product
> references. Please note that test duration and cost will
> differ depending upon your particular product, and does not
> include any safety testing to UL 60950 even though this is
> also a NEBS requirement. Thus, the time and cost will
> increase. Also note that, depending upon your location,
> not all of these tests can be performed by a single test
> laboratory;-- you get to ship your product around. Be
> also aware that the same can happen even though the lab
> states that they will take care of everything (then they
> sub-contract it to other labs!). You will also need to
> have one or more of your people at the labs to assist in EMC
> immunity testing & ESD testing, to package and unpackage
> units/modules/equipment. Packaged tests require that
> certain parameters are tested prior to packaging (you need a
> viable product), then come the packaging stress tests, then
> you unpackage the equipment and repeat tests to see which
> parameters failed. Brutal it is, as Mike stated. The
> test duration increases as you find that certain parts of
> your product need to be redesigned. As was also previously
> stated, you need to make sure that the whole engineering
> team reads the GR-63 and GR-1089 standards and understands
> the requirements. No sense spending money on lab tests for
> obvious failures.
>
> Tania Grant
> [email protected]
> ----- Original Message -----
> From: Michelle Cho
>
> Dear all,
>
> I need some help about something called NEBS(Network
> Equipment Building System). The whole procedure...
> What exactly the NEBS is and where can I do the testing? How
> much? How long does it take?
>
> Thanks in advance!
>
> Michelle
>
>
>
>
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