We currently put vague references in the revision block. That reference is
usually enough to refresh my memory and remember most of the ECN. If it was
before my time, I need more detail or I just don’t remember I look up the
ECN, which is listed in the revision block as well.

Ted T.

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of James Head
Sent: Monday, March 16, 2009 3:19 AM
To: [log in to unmask]
Subject: Re: [TN] Future SHALLs (IPC-2610)

"It's FAR easier to track ECN data in a PDM system than to try to read 
abbreviations and vague referneces that fit in a revision block.  Not to 
mention often adding pages and pages of confusion that the current vendor 
does not need."

This isn't just a "shall" for IPC, it's also a requirement for many other
standards-bodies, external auditors and certification bodies etc. who want
to see details of the revision history on any drawing.

James

James Head BEng CID MIIE MIET
Senior PCB CAD Engineer
Crowcon Detection Systems Limited
2 Blacklands Way
Abingdon Business Park
ABINGDON
OX14 1DY

Telephone:      +44 (0) 1235 557700 extension (9) 289
Fax:            07092024504
Email:  [log in to unmask]


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