Other types of analyses that do not require the use of
a software tool are ad hoc procedures, such as reviewing a design against a
known set of testability design practices, such as the checklist found in Appendix C . Grumman, and later Raytheon, developed such a procedure for the US Air Force Rome Laboratory that rates a design based on the presence or absence of design features that increase or decrease ease of test. The result is a score that is subjectively evaluated as indicating the design is anywhere between untestable without redesign to very testable. Used in conjunction with a design guide, also developed as part of the process by the mentioned companies, this method can be very effective in making the test engineer's job easier and less costly. Some of the testability design guidelines taken from the report referenced in the footnote14 are provided in
Appendix C . Testability analysis is a combination of applying any of the above mentioned techniques to a system design, and should be tailored according to the design level and design technology.
VOLUMES I & II - Testability Design Rating System: Testability
Handbook (Volume I) & Analytical Procedure (Volume