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File:Tek 581 early trig.png|early model 581 trigger using tubes | File:Tek 581 early trig.png|early model 581 trigger using tubes | ||
File:Tek 581 late trig.png|late model 581 trigger using tunnel diode | File:Tek 581 late trig.png|late model 581 trigger using tunnel diode | ||
File:Tek 581 vertical output amp.png|vertical output amp driving CRT | File:Tek 581 vertical output amp.png|581 vertical output amp driving CRT | ||
</gallery> | </gallery> |