Design for testing or design for testability (DFT) is a critical technology to ensure the accessibility of manufacturing test. Test software tool has also become increasingly prominent in improving the testability of designers’ circuit.
Vayo Technology, a global provider of intelligent NPI software solution, has made great effort in boosting DFT/Testability. Its VayoPro-Test Expert software has amassed years’ of industry experience and followed up the industry trend.
The solution can simulate entire PCBA, then run virtual test procedures to estimate the testability and test coverage of DFT strategy, and generate program for sorts of test machines.
As a great handy tool for PCB test engineers, VayoPro-Test Expert came with intelligent & comprehensive DFT/testability analysis function, and automatically generate overall DFT report with specific categories, saving much time & effort for PCB test personnel.
Our overall DFT report came with 13 categories, covering: summary of accessible rate, list of inaccessible nets, insufficient Probes (accessible net), unstable test points list, parallel parts list, etc.
For PCB test engineer/DFT (design for testing or design for testability) analysis purposes, the most significant and helpful report could be “inaccessible nets list”. Vayo’s DFT analysis tool can intelligently gives out reasons for “inaccessible”, and automatic generate into report with comments accordingly. PCB test engineer/DFT team can easily communicate with PCB designers, altering design to increase PCB testability.
Additionally, the reasons of “net-inaccessible” can also help improve your test strategy settings. For instance, one typical “inaccessible” reason is “No priority”. You may easily alternate rule priorities of testing nails, making more nets to be available for PCB testing. Vayo DFT tool also provides powerful nail rules flexible for your alternation.
Another part worth looking would be “Insufficient probes list”, we all know some nets require more test points than others. In Vayo DFT tool, test engineers can easily set nail quantities and define special nets as required, then automatic verify with high-performance virtual testing.
Kelvin test is a good instance. In Vayo DFT tool, test engineers can easily define nail QTY required by general nets or special nets. Sort the special nets by conditions is also available!
Doing PCB test should also consider your PCB tester machines. Whatever your ICT (in-circuit testing)/FPT (Flying probe test) equipment is: Keysight, Teradyne, TRI, Spea, Takaya, Seica, … VayoPro-Test Expert could perform comprehensive check of testability (design for testability), and reveal DFT results into an overall report.
Check more tester machines supported as below:
ICT: Teradyne/GenRad, Agilent, TRI, Checksum, JET, Hioki, IFR, SRC, …
FPT: TAKAYA, HIOKI, SEICA, Acculogic, Digital Test…
AXI & AOI: Agilent 5DX, ViTrox V810 &V510, Omron, VI Technology, Orbotech, TRI, …
Compared with other DFT/testability software, VayoPro-Test Expert stand strong with competition advantages like: Validating mask layer via extra Gerber data source, virtual nets merge for higher testability rate, backdrill identification, batch nail offset for flying probe tester, not to mention the ease-of-use and immediate support (response <8 hours for urgent cases).
Last but not least, as a smart NPI solution commitment with continuous improvement, VayoPro-Test Expert has been selected by Flex/Venture/Jabil/Sanmina/IMI/Benchmark/OSI/Katek/Paramit/Intel/GE/Keysight/Intuitive/Bosch/…
Vayo technology has devoted 17+ years to NPI/DFT/DFA/CAM software solutions for electronics industry, Vayo offers comprehensive solutions like 3D DFM/DFA analysis, DFX execution system, stencil know-how digitalization, DFT/testability & strategy analysis, SMT specialized CAM tool, visual aids work instruction, board view & fast query, Gerber view & conversion, …. Vayo owns 25+ patents and was recognized by customers from 20+ countries worldwide.