1. Director, Futura Apsol Pvt. Ltd.
Good Day
Automation in Testing By
Girish S. Ranade
Director, Futura Apsol Pvt. Ltd.
Pune.
25th September 2006

2. Testing To ensure desired quality of an item.
By measuring selected parameters and comparing measured values against those specified.
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3. Cost of Testing
Testing adds nothing to the product other than ‘confidence’, instead adds to the costs.
But in absence of testing at various stages of product, cost to company is supposed to be 10 times at each stage.
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4. Testing is important for any manufactured item.
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5. Automation in Testing, advantages.
Enhances speed of Testing.
Increases accuracy in testing.
Deskilling.
Data storage for analysis.
Builds customer confidence.
Programmability.
Etc.
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6. Commonly Used Abbreviations
ATE : Automatic Test Equipment.
ATS : Automatic Test System.
UUT : Unit Under Test. E.g. Harness Under Test can be HUT.
DUT : Device Under Test.
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7. Terms Used
cycle time - The time duration from the start of one cycle to the start of the next.
Fixture / Rig : Mounting of UUT. Connects UUT to the test equipment.
Adaptation : Connection between tester and UUT.
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8. Basics of an ATE
Testing is done by applying specified input/s to UUT and measuring output/s and comparing them with acceptable limits.
Indicate results.
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9. Main Blocks of an ATE
Connect input/s, Read / Measure outputs, Compare with programmed / stored data and display result.
Switching / Isolation etc as required.
Output/s measurement
Input/s generator/s
UUT on fixture.
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10. Input/s Generator/s Frequency Generator.
Power Supply, fixed or programmable.
Electronic Load.
VFD – Motor – Magneto for a 2 wheeler electric component.
Air under pressure.
Applied Force.
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11. Output/s Measurement Multimeter. Analog To Digital Converter.
Oscilloscope.
Digital Inputs.
Force Measurement.
Time Measurement.
Camera for vision.
Etc.
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12. Brain / CPU / Controller
A PC, Industrial or commercial.
An embedded system based controller.
Simple digital and/or analog circuit.
etc.
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13. Switching / Isolation
A bank of relays, electromechanical or solid state.
Analog or digital ‘switches’.
Manual Switches.
etc.
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14. For Example ___
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18. Reference to Auto Industry
Customers expect 100% tested components.
Components directly go to assembly line.
Should be free from any defect.
Traceability required.
Vendor should increase customer confidence by adopting various methods in process.
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19. Hence component manufacturers expect…
Low cycle time.
Reliable measurement / fault detection and reporting.
Data storage.
Online Label printing with date and time of passing a component for traceability.
Marking on correct component.
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20. Hence component manufacturers expect…
Mistake proofing / Poka-Yoke by
Holding a faulty component till authorised person releases.
For a faulty component, next test cycle starts only after placing the component in faulty bin.
Test report of faults.
‘Market decided’ features in future.
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21. Where ATEs are required
Pharma : Missing Tablets, Correct printing of name, batch etc. correct printing of ‘leaflet’. Etc.
Food : Sorting quality of raw as well as finished items, correct filling etc.
Automotive : All component testing etc.
each and every industry.
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22. Summary
Automation in Testing is important and essential for manufacturing industry.
ATEs are programmable, intelligent system.
ATEs can be configured as per requirements.
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23. Thank You
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