Assignment on Automated Testing

Added on - 22 Oct 2020

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EngineeringDesign
Table of ContentsExecutive Summary:....................................................................................................................................3Introduction:..............................................................................................................................................3Design Plan..................................................................................................................................................4Design Research..........................................................................................................................................4Description and evaluation of design.....................................................................................................4Final Design:..........................................................................................................................................6Testing and Design Evaluation:..............................................................................................................7REFERENCES................................................................................................................................................8
Executive Summary:To accomplish exiting problems of manual testing which results in faults and are timeconsuming, it is essential to use some automated testing by which these drawbacks can beremoved. Furthermore, when multiple PCBs are required manual working will not work as itneeds more work and there are high chances of problem. For this automated test jig can be used.This provides fast testing and is appropriate. If any kind of errors is present in PCB then they canbe detected at the time of development phase which saves lots of time and modifications can bemade accordingly. It will be analyzed that time of testing will be reduced, efficiency will beenhanced and there will be significant enhancement in quality of PCBs.Introduction:Automated test equipment (ATE) is a device which can be used to test device. This testdevice is called unit under test or device under test (Henshall, Bath and Handwerker, 2011). Byopting for automation, measurements can be performed quickly and test results can be evaluated.ATE is a computer controlled digital system which s used to identify faults in PCBs.Problem Statement:When manual inspection is carried out i.e. by usage of hands, itleads to number of mistakes and certain damages have occurred due to this in productionline.Background Information:Manual testing requires lots of time, to eliminate this andremove errors from electronic devices it became mandatory to go for something by whichthese errors can be completely removed. ATE enables testing of different equipments andPCBs. Furthermore, it also assists in reduction of time.Product Design Specification:To address the problem statement, it is necessary to testassembled electronic system using ATE. By this faults can be identified before they arebrought within market. Furthermore, ATE reduces the cost of manufacturing andimprovises results. After fabrication of semiconductor devices, they must be tested so thatthere is no scope of even a minute error. Design specification of ATE: computer which isa master controller which is able to coordinate one or more sources and capture variousinstruments. DUT (Device under test) is connected physically with ATE using Prober orHandler which is a robotic machine. Fixture or ITA (Interface test adapter) is also usedwhich connects DUT to resources of ATE. ATE will identify whether DUT is workingeffectively or not. Secondly, if DUT is not working as per required standard then it findsout reason why it is so.Design PlanIt describes how ATE can be used to have desired PCBs means which are not defected.General scheme by which input can be tested is shown below:
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