Welcome Products Applications Support Contact Us Login Why should I use diagnostic tests? Your production test strategy will be designed for maximum throughput and productivity in the manufacturing line. But in the event of a unit failing the tests in the main program, your quality control system will need more detailed information about the reasons for the failure. Please consider the following two example use cases. Transformer Use Case 1: Testing A Transformer With Multiple Secondaries A common high-productivity test strategy for a transformer with multiple secondaries is to perform simultaneous Hi-Pot tests between the primary and all three secondaries. But if a unit fails that test, you’ll want to go further and ascertain which winding is faulty. For example, a mains supply transformer might have a primary and three secondaries, used to convert 240V to 1 5V, 12 V and 5 V. A traditional test strategy would perform a Hi-pot test between the primary and each secondary in a sequential fashion, to verify the safety conformance of the unit (Figure 1). Safety standards typically specify a dwell time for such tests, requiring perhaps 10 seconds per test, and hence a total Hi-pot test time of 30 seconds. Traditional test strategy A higher productivity strategy would be to use the AT5600 to execute all three Hi-pot tests simultaneously, cutting routine test time from 30 to 10 seconds per unit (Figure 2). Simultaneous Hipot testing If the device passes, no additional action is required. Should the test fail, the AT5600 Diagnostic Test feature can be used to perform the 3 individual HI-POT tests to qualify, and understand the failure in detail. In this way the AT5600 provides “the best of both worlds”: fast safety testing: accurate diagnostics and QA information for failures. Use Case 2: Testing Multiple Discrete Transformers The AT5600 allows up to 20 four-wire connections. It is therefore possible to simultaneously test five simple two-winding, four-pin transformers (for example pulse transformers) using an appropriate test fixture. This not only cuts test time, it makes loading the parts to the fixture more time efficient (Figure 3). In this case the main test program would be designed to exercise the transformers individually for the simpler (and faster) resistance, series inductance and turns ratio measurements; and then run tests (such as Hi-pot) that require dwell times simultaneously on all five devices (i.e. all primaries as HI to all secondaries as LO). Only if the combined test fails is it necessary to run individual Hi-pot tests to detect which of the parts caused the failure. The Diagnostic test now allows you to do this. Testing multiple discrete components Diagnostic tests How Do I Program Diagnostic Tests ? The latest version of Voltech’s AT EDITOR software (V3.44.00 and above) makes it easy to specify diagnostic tests. You can specify any sequence of tests to be run in the event of a test failure in the main test program. Simply click on the “Diagnostic tests” tab and select the diagnostic test specifications you require. Will diagnostic testing work on my AT3600 / ATi tester? AT3600 and ATi The Diagnostic Test Feature is available only on the AT5600. It is not offered by the AT3600 or ATi. However, you can still use test programs developed for the AT5600 with previous generation Voltech equipment. The main test program will run on the older testers, and the Diagnostic Tests will simply be ignored. This common programming approach simplifies test program generation and maintenance, and makes it easy to build test environments that contain any mix of AT5600, AT3600 or ATi testers. CONTACT US Any Questions on the Diagnostic Option? Comments? If you have any questions about the above or would like help upgrading your AT5600 to take advantage of these new features, please contact us for help. Name * Email * Message * Send Message Email Voltech USA 1-239-437-0494 EUR 44 1235 861173 ASIA 44-1235-364-012 Products Applications Support Service Contact Us Terms Of Business Terms Of Use Privacy Any problems or questions using this website? Let us know! Voltech © 2021 This site uses cookies on your computer to help improve your experience. Please read our Privacy Statement in the footer for further information. Otherwise, click AGREE and you're OK to continue. Cookie Information Agree