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Sau khi một vài tháng thiết kế hệ thống và tạo mẫu, mảnh phần mềm và phần cứng đến với nhau thành một phần hoàn toàn của thiết bị. Tích hợp thử nghiệm bắt đầu vào lúc này, để tất cả các thành phần có thể được thực hiện như một đơn vị. | Metrology Test Instruments and Processes proprietary functions. The system design includes a considerable amount of software creation along with tests on specific functions along the way. h. Integration testing After some months of system design and prototyping the software and hardware pieces come together into a complete piece of equipment. Integration testing begins at this time so that all of the components can be exercised as a unit. Integration tests are subsets of the full-scale performance and functionality tests that are carried out by the equipment vendor s QA lab targeted towards known problem areas or complex functions. i. Verification and QA testing Once the complete system is functioning properly but before release to production the QA department of the system vendor must put the equipment through an extensive battery of tests of all kinds ranging from simple performance measurements to extremely complex stress tests. QA testing usually follows a formal test plan and can take months to complete. Many of the test setups and test procedures covered in this book apart from manufacturing and installation testing will be applicable to QA test plans. j. Environmental and regulatory testing This phase focuses on the physical aspects of the equipment requirements temperature humidity vibration tolerance EMC isolation shock lifetime and reliability tests. This phase of testing is normally carried out when the equipment is working well and nearing production. k. Equipment production Once all the testing has been carried out successfully the equipment design is sent down to the manufacturing line and production begins. Manufacturing test is performed on every copy of the produced equipment to ensure that it meets the design requirements failing units may be fixed rework or scrapped. Manufacturing tests use a small subset of the test procedures and equipment described in this book. l. Evaluation testing Large users of WLAN equipment such as service providers and
