File name Optimize burn-in test with the Keysight 34980A multifunction switch measure unit apnote overview 599
Optimize Burn-in Test with the 34980A
Multifunction Switch/ Measure Unit
Demanding applications in process automation, power
generation and public transport require extensive device
burn-in to minimize early defect rates. Test engineers in the
power generation and large drive control business must of-
ten test 100% of the printed circuit board assemblies before
integrating them into complex products. The efficiency of
a burn-in test process is key to the management of overall
cost of test. An efficient burn-in test system design takes
into consideration instrument selection, programming, and
a creative approach to power management. This applica-
tion overview will discuss the complexities of burn-in test
and the solution created by LXinstruments, a Keysight
Technologies, Inc. solutions partner, based on the Keysight
34980A switch/measure unit.
To maximize the reliability of complex systems used in ap- Figure 1. The LXinstruments Burn-In Test System with the Keysight
plications such as process automation, power generation 34980A Switch/Measure Unit.
and public transport, burn-in test is essential to identify
early defects. In many cases, burn-in test will be applied to
all of the circuit boards or devices used in these systems.
For accelerated life testing, the burn-in test procedures will
be executed in an environmental chamber where the tem-
perature of the device under test (DUT) can be cycled over
many hours. The DUTs may be tested passively or actively.
In both cases, power is applied; but, when testing actively,
the device is also exercised with a test routine.
The provision of individual power supplies for each DUT
can be very costly and requires considerable physical
Figure 2. Keysight 34959A breadboard module with LXinstruments
space; however, sharing a common power supply between circuitry.
all or a group of DUTs risks losing test time and data if an
early failure in one DUT compromises the power supply to
The solution developed by LXinstruments is to create a
modular multiplexed architecture, based on the Keysight
34945A breadboard module for the 34980A Multifunction
Switch/Measurement Unit, which allows the DUT's to be
switched between common power supplies. This solution
is fully scalable allowing it to cater to a varying number of
DUTs, reducing the cost and physical space required.
Solution Solution details
The Keysight 34980A Multifunction Switch/Measure The power supply multiplexer utilizes the capabilities
Unit is a flexible, reliable switching and data acquisition of the Keysight 34959A breadboard module to provide 8
platform. The Keysight 34959A breadboard module can