In-Circuit Test Fixtures – (ICT)
ECT Fixture Technology combines innovative engineering and exacting manufacturing assembly techniques to provide the most precise loaded board test fixtures in the ATE industry.
ATE which independently tests each device on a board by applying input stimuli directly to the devices inputs, and sensing the results directly from the devices outputs. In addition to testing the individual components like a component tester, the in-circuit tester can detect bad connections to the PCB, backwards insertions, and short or open circuits.
In-circuit testers are comparable to loaded board continuity testers augmented with an array of power supplies, digital multimeters and pattern generators. During analog measurements, the test program directs the tester to apply the appropriate measuring instrument across a specified pair of nodes. When the measurement has been completed, the program compares the measured value to an acceptable range for that component. A number of in-circuit testers can make and record (data log) exact measurement values. A function called guarding electrically isolates components that may be parallel.