Diping Che, Ph.D.
Associate Director of Engineering
Illumina Corporation
9885 Towne Centre Drive
San Diego, CA 92121
August 17, 2003
Subject: Letter of Recommendation for Steve Wetterling and Servenger LLC
To Whom It May Concern:
During June and July 2003, I arranged for the services of Mr. Steve
Wetterling, President of Servenger LLC, to assist with engineering
problem solving for a new optical scanning instrument that we were
bringing to the market. Steve responded rapidly to a short notice
request and came to the San Diego area to be on-site for approximately 6
weeks until the problems was resolved and design was stabilized.
Steve quickly became part of the engineering team and took the ownership
of the issues. He typically worked 10-12 hours per day with great energy
and enthusiasm. He led the electrical engineering team to understand and
fix the technical problems that were occurring. Steve demonstrated his
very wide range of expertise including:
• Selection and usage of system power supplies, particularly in
recognizing and reducing the impacts from the high level of switching
noise originating in the system power supply;
• Proper bonding and grounding for power distribution, particularly in
locating and removing unintended ground loops that were damaging
components during system turn-on;
• Shielding and filtering of critical signal paths from noise sources;
• Recognizing the sensitivity of the instrument to electrostatic
discharge and demonstrating the methods needed prevent ESD damage;
• Stepper motor selection and usage to rotate the optical filter wheels;
• Stepper motor control malfunctions that were traced to multiple
causes: over temperature of the driver ICs, the vendor making
unannounced changes to internal components with unintended consequences
and marginal logic levels going into the motor control circuits;
• Causes for catastrophic CMOS latch up failures;
Steve was always very organized. He demonstrated excellent problem
solving abilities and his project leadership skills are exceptional. He
helped the engineering team to be organized, maintain focus and
effectively working together during the extra hours needed to bring this
project to a successful conclusion.
The new product is now in full production and generating significant
revenue for our company.
Steve did a very good job for us and I will not hesitate to use him
again. I recommend him to others needing an exemplary combination of
technical, project and people skills for an electronic product
development effort.
Sincerely,
Dr. Diping Che
dche@illumina.com
Andrew King, President and CEO
Icon Time Systems
15201 NW Greenbrier Parkway, Suite A1
Beaverton, OR 97006
October 26, 2007
Subject: Letter of Recommendation
To Whom It May Concern:
The Servenger company and Steve Wetterling have worked with us this past
year as a key contributor to our development program where we have used
new RFID tag and sensor technologies to significantly extend our product
line.
Steve’s contribution was both for technical content and for important
project management tasks. These included:
• Major re-write to the product performance specification and to
the firmware detailed specification.
• Helping us to locate the lowest cost RFID tag technology and
vendor.
• Finding and working with Texas Instruments for the application
of their new RFID transceiver IC. This IC significantly reduced the
implementation cost and manufacturing cost of our product. The technical
work included the design, tuning and performance test of the PCB antenna
as well as reviewing the schematic designs of the overseas product
vendor.
• Working with the vendor to implement the design into a
functional prototype. This involved developing a very close working
relationship with the vendor’s local office and many late night project
conference calls and emails to the staff at the vendor’s Shenzhen, China
office.
Very importantly for us, Steve worked closely with our in-house product
development team to improve our project management methods from a
beginners’ level to become very effective team for getting the work
done.
I think of Steve as “my accelerator” – meaning that if something
important needs to get done then he’s the guy we go to for rapid
results.
Steve did a very good job for us. I would certainly use his services
again and I recommend him to others.
Sincerely,
Andrew King
President, CEO
Icon Time Systems
Mike Gerard
Principal and President
Advanced Technical Marketing, Inc.
4900 S.W. Griffith Drive, #155
Beaverton, Oregon 97005
September 23, 2003
Subject: Letter of Recommendation for Steve Wetterling and Servenger LLC
To Whom It May Concern:
I have known and worked with Steve Wetterling for over 13 years on a
business basis as a manufacturers representative for electronic products
and on a personal basis.
While with NEC America and the successor company, NatSteel Electronics,
Steve led several successful product development projects that used
items from companies that I represented such as AT&T Microelectronics
for power supplies and for fiber optic components. Steve’s engineering
work, project leadership, professionalism and attention to detail in
dealing with me and the companies that I represented was always first
rate. I always appreciated the depth of the technical expertise that was
applied to the projects that I was involved in.
In the Servenger business format, Steve Wetterling has provided
technical support to my company and clients for the application of new
products from the A. T. M. I. line card.
My working relationship with Steve has always been productive for both
parties and I would not hesitate to recommend his services for new
product development projects.
Sincerely,
Mike Gerard
President
A. T. M. I.
Beaverton, Oregon
Phone (503) 643-8307
mike.gerard@a-t-m-i.com
