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CheckSum is a leading supplier of low-cost in-circuit test and on-board ISP programming systems and services to the worldwide electronics manufacturing industry. Products and services include systems, fixtures, and programs that detect manufacturing process faults on complex SMT printed circuit assemblies and that provide value-added operations such as device In-System Programming (ISP). CheckSum has been delivering reliable, cost-effective, and easy-to-use test solutions to OEMs and contract manufacturers for 20 years. With an installed base of almost 3,000 test systems at more than 200 manufacturing sites in over 40 countries, CheckSum helps customers ranging from automotive electronics manufacturers to global EMS providers increase productivity while reducing total test and manufacturing costs. Based in Arlington, Washington, CheckSum is the only North American Automated Test Equipment (ATE) supplier that offers complete solution packages from a single source, including:Analyst in-circuit test systems designed for today's complex boards MultiWriter ISP programming subsystem for high throughput programming "Fast-Turn" bed-of-nails test fixture fabrication services Custom ISP programming applications Custom in-circuit and functional test programs, including Boundary-Scan and vectorless test applications "Engineer-to-engineer" technical support