74 The PCB Design Magazine • October 2017
1
Predictive Engineering: Happy
Holden Discusses True DFM
Happy Holden has been in-
volved in DFM for over 45
years, since he first started
working at HP and optimized
their PCB design and manu-
facturing processes. Natural-
ly, for this issue, Barry Matties
and Andy Shaughnessy made
it a priority to get Happy's thoughts on DFM, and
what true DFM entails.
2
New EMA Constraint Manager for
OrCAD Brings True Collaboration
to the Design Process
Constraint Man-
ager for OrCAD
stores constraints
in the OrCAD
Capture design
file, so there is no
need to manage
constraints and
designs. Since some constraints are dependent on
layout specifics, Constraint Manager for OrCAD
integrates with the Allegro Constraint Manager to
share constraint information.
3
The Shaughnessy Report:
Mistakes Were Made
We started planning the August
issue with a survey sarcasti-
cally titled, "Whose fault is
that bad board?" We asked
a variety of questions re-
garding how the cause
or causes of failure were
determined, and what compa-
nies do to keep from making the
same mistake again. We asked the question "If a
board fails in the field, whose fault is it, typically?"
Check out some of the answers.
4
New Cadence Allegro DesignTrue
DFM Technology Accelerates
New Product Development and
Introduction Process
Cadence Design Systems announced Cadence
Allegro DesignTrue DFM technology, the indus-
try's first solution to perform real-time, in-design
DFM checks integrated with electrical, physical
and spacing DRCs. The innovative new technolo-
gy, integrated into the Allegro PCB Editor, enables
PCB designers to identify and correct errors imme-
diately, long before manufacturing signoff.
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