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The '''Tektronix 7A12''' is a 120 MHz dual-trace vertical plug-in for [[7000-series scopes]]. | The '''Tektronix 7A12''' is a 120 MHz dual-trace vertical plug-in for [[7000-series scopes]]. | ||
It was designed by Roy Hayes | |||
(who also designed the [[3A3]] before leaving for HP Loveland in Jan 1971). | |||
The 7A12 has relays in the signal path for the input attenuators. | The 7A12 has relays in the signal path for the input attenuators. | ||
The relays are controlled by logic in the 7A12, which is controlled by switches on the front panel of the 7A12. | The relays are controlled by logic in the 7A12, which is controlled by switches on the front panel of the 7A12. |