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It uses a [[6688]] tube in the staircase generator circuit. | It uses a [[6688]] tube in the staircase generator circuit. | ||
*http://bama.edebris.com/download/tek/3t77/3t77.djvu | * [http://w140.com/tek_3t77_sn2642.pdf Tektronix 3T77 Manual (sn#2642, PDF)] | ||
* [http://bama.edebris.com/download/tek/3t77/3t77.djvu Tektronix 3T77 Manual (sn#4256, DjVu)] | |||
<gallery> | <gallery> |