ABurnIn™ ... MultiUp, Unattended, Repetitive Testing
Oven Chamber, Burn-In Test At The Contract Manufacturer
Certain manufacturing strategies require that all products pass a
lengthy, often stressful, test procedure before shipment. When an
environmental oven, "hot tent", or "heated walk in room" is used, the
test is often called, "Burn-In". Not all Anagon clients endorse this
strategy. It's expensive and complicated. However, some believe that
Burn-In will help ensure high product quality in the field.
Anagon gained much practical knowledge developing Burn-In systems for
early clients. We found that testing multiple units at the same time
was complex. We learned to test each unit before committing it to the
oven. From this experience, we synthesized a general purpose,
architectural base known as ABurnIn™. This intellectual property
drastically reduces the cost of new developments.
Continuous Telecom BER Test Using A Walk-In "Hot Room"
ABurnIn™ provides a standard callback mechanism that allows the test
engineer to develop individual, application-specific tests that "plug
into" the overall architecture. Each callback performs a specific
function: Connect, Download, Identify, QuickTest, FullTest, and
Disconnect are typical examples.
Immediately above is the Burn-In control room at Yurie Systems, in
Landover Maryland. You can see the walk-in hot room through the window,
where 180 products can be burned in simultaneously. We integrated
ABurnIn™ with ATM traffic generator instruments and used the Yurie
network to route full bandwidth ATM traffic through each product. Each
unit must pass 16 hours of errorless ATM traffic before reaching the
customer.
A Typical ABurnIn™ Application Under Development At Anagon
Because Burn-In deals with many units at once, it is easy for
low-skilled operators to become confused. BurnIn™ provides a graphical
user interface that models the physical Burn-In space, so that
operators can easily identify where specific units are and how each is
performing. Immediately below is a configuration that models 3x2 units
to a "shelf", 5 shelves to a "rack", and 3 racks to the "facility".
In this application, no external instruments are required. Instead,
Anagon controls diagnostics built into each product and monitors
progress through a serial port multiplexer. BurnIn™ uses a proprietary
schema to record and archive detailed measurement data on each unit.
ABurnIn™ also maintains a profiler that can trigger different tests
based on time, temperature, and humidity.
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