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* [http://w140.com/1947+Tektronix_Catalog.pdf Tektronix 1947 Catalog with 511 (PDF)] | * [http://w140.com/1947+Tektronix_Catalog.pdf Tektronix 1947 Catalog with 511 (PDF)] | ||
* [[Media:tek_511_manual.pdf|Tektronix 511 Manual (PDF, OCR)]] | * [[Media:tek_511_manual.pdf|Tektronix 511 Manual (PDF, OCR, bad-OCR)]] | ||
}} | }} | ||
The 511 was '''Tek's second product''', | The 511 was '''Tek's second product''', |