RE: Need Volunteers to check Artwork - VTTC Staccato Controller

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "by way of Terry Fritz <teslalist-at-qwest-dot-net>" <Marco.Denicolai-at-tellabs-dot-com>

Dan and Jan,

I use almost daily Mentor schematic capture (Design Architect) and their
PCB design tool (Layout). They are very versatile tools, as well as
complicated. You are rarely left at 98% of work done with no way to
implement the 2% left (i.e. an exotic pad type, special routing, etc.).
Instead, that can be easily the situation with cheeper tools.

Mentor is no quick-and-dirty. Better to call it slow-and-secure.

But...Many PCB designers like to take shortcuts ignoring the PCB tool
warnings (traces get colored in yellow, unrouted in green). Now, if you
accept to see warnings as part of your normal design, you will likely
miss to recognize "true" warnings and manufacture a faulty board.

It is typical to:
- forget VCC and GND connections
- have very thin cuts between pad and trace (i.e. no connection)
- rotate 180 degree connectors
- forget termal pads
- leave some fill area not-updated, thus failing to fulfill clearance
requirements.
- reverse bus bit numbering from sheet to sheet
- have unconnected signals between sheets due to signal name typos

So, don't take shortcuts and you'll get safely there were you're going.

Regards

 > -----Original Message-----
 > From: tesla-at-pupman-dot-com [mailto:tesla-at-pupman-dot-com]
 > Sent: 7. maaliskuuta 2003 21:04
 > To: tesla-at-pupman-dot-com
 > Subject: RE: Need Volunteers to check Artwork - VTTC Staccato
 > Controller
 >
 >
 > Original poster: "Mccauley, Daniel H by way of Terry Fritz
 > <teslalist-at-qwest-dot-net>" <daniel.h.mccauley-at-lmco-dot-com>
 >
 >
 > No offense meant but I was under the impression Mentor Graphics made
 > the best EDA high quality software! ;-) I certainly would expect it to
 > cope with a simple two-layer board with only a handful of logic
 > components and a single supply rail.
 >
 >  >>Actually, Mentor Graphics is what the drafting department
 > uses here at
 > work.  I don't use it for my personal boards.
 > Also, I am only allowed to use schematic capture in Mentor
 > Graphics (union
 > policies), so I really don't get to use the PCB
 > portion of Mentor that much.
 >
 >
 >

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