180: Difference between revisions
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The '''Tektronix 180A''' was [[introduced in 1958]] and is an all tube | [[File:Tek 180A-Front-On.jpeg|thumb|300px|right|Tektronix 180A Time-mark generator]] The '''Tektronix 180A''' was [[introduced in 1958]] and is an all tube | ||
time mark generator with an oven-controlled crystal oscillator (OCXO). | time mark generator with an oven-controlled crystal oscillator (OCXO). | ||
Time mark generators put out pulses at user-selectable intervals. | Time mark generators put out pulses at user-selectable intervals. | ||