Automatic Assembly-Line Testing of Cartridges

Frandsen E. Automatic Assembly-Line Testing of Cartridges. J Audio Eng Soc. 1978;26(11):856-862. Available from: https://aes.org/publications/elibrary-page/?id=3237

@article{Frandsen1978_3237,
  author = {Frandsen, Ernst},
  title = {{Automatic Assembly-Line Testing of Cartridges}},
  journal = {Journal of the Audio Engineering Society},
  volume = {26},
  number = {11},
  pages = {856--862},
  year = {1978},
  month = nov,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=3237}
}

TY  - JOUR
TI  - Automatic Assembly-Line Testing of Cartridges
AU  - Frandsen, Ernst
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 26
IS  - 11
SP  - 856
EP  - 862
PY  - 1978
DA  - 1978/11/06
UR  - https://aes.org/publications/elibrary-page/?id=3237
PB  - Audio Engineering Society
LA  - en
AB  - Several measurements are required to verify that the performance of every pickup cartridge assembled on a production line meets its published specifications. Automatic testing makes faster and more accurate measurements possible, and with stored program control, statistical distributions of performance parameters in a production series can be computed. In addition, hard copy of test results, to be enclosed with the cartridge, can be obtained. A minicomputer-based production test system for stereo and quadraphonic cartridges is described, where, by employing a specially designed test record as signal source, the following parameters characterizing a cartridge are measured and compared against specifications: output voltage, channel difference, tracking ability, frequency response, and channel separation. With a reference cartridge calibrated by the two-speed method, variations in test record frequency response are measured automatically, and accounted for in test results. The system incorporates a strip printer for printout of calibration data, and a level recorder to plot frequency response. The total time, including handling, is less than 1 minute for the complete test of a cartridge.
ER  -