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7A11: Difference between revisions
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|designers=John Addis;Ron Peltola;Glenn Bateman | |designers=John Addis;Ron Peltola;Glenn Bateman | ||
|manuals= | |manuals= | ||
* [[Media:070-0984-00.pdf|Tektronix 7A11 Manual]]<br /><small>[[Media:070-0984-00 (2).pdf|Alternate copy]] | * [[Media:070-0984-00.pdf | Tektronix 7A11 Manual]]<br /><small>[[Media:070-0984-00 (2).pdf|Alternate copy]]</small> | ||
}} | }} | ||
The '''Tektronix 7A11''', [[introduced in 1969]], is a vertical plug-in for [[7000-series scopes]]. | The '''Tektronix 7A11''', [[introduced in 1969]], is a vertical plug-in for [[7000-series scopes]]. | ||
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{{BeginSpecs}} | {{BeginSpecs}} | ||
{{Spec | Bandwidth | 250 MHz (in [[7903, R7903, 7904 | {{Spec | Bandwidth | 250 MHz (in [[7903]], [[R7903]], [[7904]], [[7104]]) }} | ||
{{Spec | Deflection | 5 mV/Div to 20 V/Div, 1–2–5 }} | {{Spec | Deflection | 5 mV/Div to 20 V/Div, 1–2–5 }} | ||
{{Spec | Input resistance | 1 MΩ }} | {{Spec | Input resistance | 1 MΩ }} | ||
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The [[7A16]] (single channel plugin) was also 150 MHz, but that was a year later. | The [[7A16]] (single channel plugin) was also 150 MHz, but that was a year later. | ||
Then the [[7904]] came out in late 1971. | Then the [[7904]] came out in late 1971. That made the 7A11 a 250 MHz plugin (for $950). | ||
The [[7A16]] was then 225 MHz (for $625). | The [[7A16]] was then 225 MHz (for $625). The 7A16 disappeared rapidly and became the [[7A16A]], still 225 MHz in 1973. | ||
In 1972, the [[485]] came out with a 250 MHz, 1 MΩ input. | In 1972, the [[485]] came out with a 250 MHz, 1 MΩ input. | ||
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By 1974, the 7A11 cost $950 and the new, popular [[7A26]] (dual trace) was $1,050, not counting probes. | By 1974, the 7A11 cost $950 and the new, popular [[7A26]] (dual trace) was $1,050, not counting probes. | ||
But that would still only get you to 50 mV/div with a (9.5 pF, 3 foot, × 10) probe, five years after the 7A11 introduction. | But that would still only get you to 50 mV/div with a (9.5 pF, 3 foot, × 10) probe, five years after the 7A11 introduction. | ||
[[Tom Rousseau]] designed the 7A26 which used the faster IC process and a [[155-0078-00|vertical IC I designed for the 485]]. | [[Tom Rousseau]] designed the 7A26 which used the faster IC process and a [[155-0078-00 | vertical IC I designed for the 485]]. | ||
The 7A26 sold so well that Tektronix presented Tom with an entirely gold plated 7A26! | The 7A26 sold so well that Tektronix presented Tom with an entirely gold plated 7A26! | ||
Obviously, he still has it. | Obviously, he still has it. | ||
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<gallery> | <gallery> | ||
Tek-7a11-front.jpg | Tek-7a11-front.jpg | ||
7A11_2.JPG| right side, probe unplugged | 7A11_2.JPG | right side, probe unplugged | ||
7A11_3.JPG| probe accessoires: tip cover, AC coupling capacitor, [[GR-874]] adapter ([[017-0088-00]]) | 7A11_3.JPG | probe accessoires: tip cover, AC coupling capacitor, [[GR-874]] adapter ([[017-0088-00]]) | ||
7a11-right.jpg| right side detail, cover removed | 7a11-right.jpg | right side detail, cover removed | ||
7a11-left.jpg| left side detail, cover removed | 7a11-left.jpg | left side detail, cover removed | ||
7a11-input.jpg| input jack with probe cable | 7a11-input.jpg | input jack with probe cable | ||
7a11-probe-interior.jpg| interior of probe | 7a11-probe-interior.jpg | interior of probe | ||
7a11-probe-interior-back.jpg| interior of probe, back side with range relays | 7a11-probe-interior-back.jpg | interior of probe, back side with range relays | ||
Tek 7a11 on.JPG | Tek 7a11 on.JPG | ||
Tek 7a11 probe.jpg|Probe | Tek 7a11 probe.jpg | Probe | ||
Tek 7a11 input amplifier.jpg|Input Amplifier | Tek 7a11 input amplifier.jpg | Input Amplifier | ||
Tek 7a11 output amplifier.jpg|Output Amplifier | Tek 7a11 output amplifier.jpg | Output Amplifier | ||
Tek 7a11 offset generator.jpg|Offset Generator | Tek 7a11 offset generator.jpg | Offset Generator | ||
Tek 7a11 volts-per-div switch and readout.jpg|Volts/Div Switch and Readout | Tek 7a11 volts-per-div switch and readout.jpg | Volts/Div Switch and Readout | ||
Tek 7a11 power supply and output connectors.jpg|Power Supply and Output Connectors | Tek 7a11 power supply and output connectors.jpg | Power Supply and Output Connectors | ||
</gallery> | </gallery> | ||