On old-fashioned dynamometers, the operator or the observer had to manually record the simultaneous readings on paper.
Nowadays, most dynamometers replace the observer’s notes with computerized devices that acquire and store the data.
Because of the very loud noise generated by the dynamometer and the engine, a performance test is stressful to anyone who’s watching it. In these given conditions, it is very difficult to manually record all the data.
A reliable computerized data acquisition system is considered to be indispensable today among engine builders and testers. Nowadays it is possible to buy recording, control, and playback capabilities in a palm sized package, that many years ago would have cost a lot more and would have had the size of a refrigerator.
An appropriate computerized...