TestStation in-circuit test systems feature a Test Quality tool suite that consists of independent, but integrated functions to help manufacturers speed development of high quality in-circuit test programs.

AutoDebug

The AutoDebug tool automatically debugs failing or marginal test program measurements using debug commands contained in an autodebug command file. AutoDebug runs until the test measurement passes specific test quality criteria. the debug commands, as well as the test quality criteria, can be customized by the test operator.

 

Adjust Limits

The Adjust Limits tool attempts to improve analog test measurements by shifting and/or widening test limits to meet specific test quality criteria. This tool adjusts measurement limits to minimize the chances for false failures.

Analyze

The Analyze tool analyzes the test program and generates a report showing:

  • Overall test fault coverage
  • Defects that cannot be detected
  • Failing and marginal test measurements

Optimize Throughput

The Optimize Throughput tool attempts to improve test throughput by adjusting test algorithms, settling times, instrument delays, and instrument ranges.

Set Quality Criteria

The Quality Criteria options are used by each of the above tools to set criteria for test measurement Proximity and Stability.

Proximity specifies how close the measurement must be to its expected value and Stability (measured using CP) specifies how much the measurement will be allowed to vary from run to run. The higher the specified CP value, the less the measurement may vary.