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has [[tunnel diodes|tunnel diode]] triggering. 581A has bandwith 85Mhz instead of 100Mhz, because CRT-production has bad yield. Many CRT provide not reach 100 Mhz. | has [[tunnel diodes|tunnel diode]] triggering. 581A has bandwith 85Mhz instead of 100Mhz, because CRT-production has bad yield. Many CRT provide not reach 100 Mhz. | ||
581 ( | * [http://w140.com/tek_581_sn1273.pdf Tektronix 581 Manual (PDF)] | ||
* [http://w140.com/581a_by_matt.pdf Tektronix 581A Manual (PDF)] | * [http://w140.com/581a_by_matt.pdf Tektronix 581A Manual (PDF)] | ||