ENGLEWOOD, Colo. Hewlett-Packard Co.'s Test & Measurement operation has a software-based approach to pc-board-assembly testing that allows the HP 5DX automated X-ray inspection system and the HP 3070 Series 3 in-circuit test system to collaborate intelligently. As a result, users can test boards with higher node counts than could be handled by in-circuit test alone.
The E6220A is a test-aware software linkage that lets the HP 5DX and the HP 3070 share the board assembly's CAD and test data, decreasing unwanted test redundancy and maximizing fault coverage. The approach is said to provide higher test coverage, faster time-to-market and lower costs than other strategies.
The X-ray system uses no fixturing. It focuses on structural faults, such as opens, shorts, missing components and insufficient solder. The in-circuit system focuses on electrical defects, including wrong-type, wrong-value, out-of-tolerance or misoriented components.
The E6220A technology consists of three components: software that transfers HP 5DX information identifying the components that have been inspected to the HP 3070 in-circuit test system, ensuring appropriate coverage of components that have not been tested; software that incorporates inspection information from the HP 5DX to develop an in-circuit test with up to 50 percent node reduction while providing more complete overall fault coverage; and real-time test linkage, to ensure that all boards have been tested on the HP 5DX and repaired before in-circuit test.
In-circuit test-probe reductions are said to range from 27 to 66 percent on four board assemblies ranging from 775 to 5,600 nodes. Faster test-development processes are promised when using CAMCAD for HP Test, a CAD interface software package.
Prices start at $19,800 for the software linkage. Additional pricing information for the HP 5DX automated X-ray inspection system and the HP 3070 in-circuit test system can be obtained from local HP board-test and inspection representatives.
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EETInfo No. 630