EMC Custom Designs Featuring cross-functional engineering:
Electro-Mechanical, PCB Design, Thermal
S9100 Thermal Universal Test Adapter with Circular UUT Dedicated Test Adaptor.
Also shown Thermal Hood and Plenum EMC Technologies’ business model is primarily an engineering-directed provider of high-end functional test hardware. All projects at EMC are directed by project manager and engineering staff whether they are designed by EMC or customer built-to-print. When engineering releases job, all parameters of project have been resolved and if EMC designed, approved by customer. Supplier network and production simply execute the released package using workmanship standards and documented processes in place.
EMC engineers work with a 3-D drawing tool – Solid Works 2009 with premium seats.With SolidWorks we can do design fit checks with our mechanism and customer UUT before fabricating any parts. This includes assembly simulation before incurring prototype costs; mechanism simulation to check for colliding parts; and stack-up tolerance analysis. We emphasize comprehensive preliminary and critical design reviews at either our customers’ facility, our facility, or through web-based online conference meetings.
The following examples demonstrate the process from a designed and approved 3-D Model to the actual final product.
Example 1: Universal Adapter with Dedicated PCB-Based Adapter
| EMC has developed universal approaches to test adapters which save on
cost, weight, and storage. This design converts the Spectrum
9100 tester VPC Series 90 25-modules to bed-o-nails so that dedicated
test fixtures can be “wireless” or PCB based.
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|  | | Once a universal adapter has been acquired, dedicated adapters are
ordered for specific UUT requirements. Each dedicated
adapter is
designed with ECO capability built-in; test engineers can affect
changes by cut and jumps on PCB. The real cost savings are not in the
initial acquisition, but rather in the repeatability of performance of
the test due to signal integrity. | 
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| Example 2: Circular UUT, Z-Motion Access | This design includes
dual-sided test in Z-motion with PCB based signal routing. Probed test
points are routed from UUT to tester with 2 PCB Interface boards.
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SolidWorks Design Model
| | The actual test adapter
design incorporates both
mechanical engineering and electrical engineering disciplines from
senior engineers at EMC. | 
Final Product
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Example 3: Thermal Universal Test Adapter for Automated line
| | EMC engineering
designed a universal adapter that includes environmental chamber plus
automated handling of adapter. Designs reviews can be accomplished both
on customer site and through interactive web-based tools that allow
customers to view and manipulate models at EMC work stations. |
|  SolidWorks Design Model | To the right is a photograph of the
prototype of thermal hood and universal
adapter designed for automated loading being built in factory.
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Final Product |
| Example 4: Complex Dedicated PCB-Based Adapter | EMC Designed the X, Z prober for
the purpose of using a servo-motor driven scope probe to test critical
signal paths during test. Test adapter also accommodates multiple UUTs,
each with a corresponding personality card.
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|
 SolidWorks Design Model | | Personality Cards are loaded onto adapter and manually engaged to a
bed-of-nails via mechanism. Framework for servo-motor driven probe is
perforated for weight and temperature uniformity as entire unit is
tested in environmental chamber. | 
Final Product
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| Example 5: Multiple-Access PCB-Based Adapter | Design
for multiple access of UUT through side access mechanisms and cables.
PCB design routs bottom side test pads to mating connectors of UUT.
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| 
SolidWorks Design Model
| | Pictured right is a photo of final product
demonstrating the process of initial 3-D design, fabrication of PWB and
machine parts, and through to final assembly and test. | 
Final Product |
Example 6: Test Station, Hi-volume Product
| Shown to the right is a design
of test station with removable cassette. Hi-volume product is engaged
pneumatically 8 UUTs at one time.
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SolidWorks Design Model
| | Cassette may be replaced with another cassette testing a similar but
not identical product. All instruments, power supplies, busses, etc,
are mounted on slide-out trays for easy ECO and maintenance. | 
Final Product
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Example 7: Test adapter with PCB Design, Environmental Chamber
| | Example 7 combines RF PCB Design for
the main distribution card, mechanical engineering for the ITA and card
guides, and thermal engineering for the temperature hood. |
|  SolidWorks Design Model
| | In this example high-speed test signals are transferred via controlled impedance traces on the PWB
to SMA connectors; then coax wired to the interface. The test is then performed in an environmental
chamber. | 
Final Product
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