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Type 53/54H was [[introduced in 1958]], along with the [[533]] and [[543]], renamed Type H in 1959, and dropped after 1970. | Type 53/54H was [[introduced in 1958]], along with the [[533]] and [[543]], renamed Type H in 1959, and dropped after 1970. | ||
* http://w140.com/tek_fcp/tek_type_h_factory_cal_proc.pdf | * [http://w140.com/tek_type_h_schematics.pdf Tektronix Type H Schematics (PDF)] | ||
* [http://w140.com/tek_fcp/tek_type_h_factory_cal_proc.pdf Tektronix Type H Factory Calibration Procedure (PDF)] | |||
Manual needed. | Manual needed. |