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[[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 | [[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 generators put out pulses at user-selectable intervals. | ||
time mark generator with an oven-controlled crystal oscillator (OCXO). | |||
Time mark generators put out pulses at user-selectable intervals. | |||
They are primarily used for calibrating the time-base of oscilloscopes. | They are primarily used for calibrating the time-base of oscilloscopes. | ||
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Tek 180a internal 2.jpg|180A internal | Tek 180a internal 2.jpg|180A internal | ||
Tek 180a internal 3.jpg|180A internal | Tek 180a internal 3.jpg|180A internal | ||
</gallery> | |||
'''RM180A''' | |||
<gallery> | |||
Tek 180a-rm 1.jpg|180A-RM in black | |||
Tek 180a-rm 2.jpg|180A-RM in black | |||
</gallery> | </gallery> | ||
'''Schematics''' | '''Schematics''' | ||
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Tek-180a-ocxo schem.png|Oscillator circuit in 180A using [[158-007]] | Tek-180a-ocxo schem.png|Oscillator circuit in 180A using [[158-007]] | ||
Tek 180a late sn power supply.png|late sn power supply | Tek 180a late sn power supply.png|late sn power supply | ||
</gallery> | </gallery> | ||
[[Category:Pulse generators]] | [[Category:Pulse generators]] | ||
[[Category:Introduced in 1958]] | [[Category:Introduced in 1958]] | ||