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11A71: Difference between revisions
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|designers= | |designers= | ||
|manuals= | |manuals= | ||
* [ | * [[Media:070-6787-01.pdf|Tektronix 11A71 Service Manual]] (PDF) | ||
* [[Media:070-6288-01.pdf|Tektronix 11A71 User Reference Supplement]] (PDF) | |||
* [[Media:Tek 11A71 schematics.pdf|Tektronix 11A71 Schematics]] | * [[Media:Tek 11A71 schematics.pdf|Tektronix 11A71 Schematics]] | ||
* [[Media:Tektronix 11k plugin NVRAM replacement.pdf|Tektronix 11k Plug-in NVRAM Replacement (PDF)]] | * [[Media:Tektronix 11k plugin NVRAM replacement.pdf|Tektronix 11k Plug-in NVRAM Replacement (PDF)]] | ||
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The '''Tektronix 11A71''' a single-channel 1 GHz amplifier for 11000-series scopes. | The '''Tektronix 11A71''' a single-channel 1 GHz amplifier for 11000-series scopes. | ||
The 11A71 is derived from the [[7A29]]. However, the 7A29 has a VARIABLE gain control while the 11A71 does not, it has only the | The 11A71 is derived from the [[7A29]]. However, the 7A29 has a VARIABLE gain control while the 11A71 does not, it has only the 1−2−5 gain sequence. | ||
The 7A29 and 11A71 have virtually the same analog circuitry including a Gilbert multiplier at the front end, but in the 11A71 it is only used for automatic calibration, not for fine gain control. | The 7A29 and 11A71 have virtually the same analog circuitry including a Gilbert multiplier at the front end, | ||
This is feature regression, but it avoids an issue that the 7A29 has, namely that its bandwidth changes substantially with the setting of the front panel VARIABLE VOLTS/DIV control. | but in the 11A71 it is only used for automatic calibration, not for fine gain control. | ||
This is feature regression, but it avoids an issue that the 7A29 has, namely that its bandwidth changes substantially | |||
with the setting of the front panel VARIABLE VOLTS/DIV control. | |||
After calibration, there is a small imbalance in the 10 mV/div setting, about 0.05 div. This is a design flaw. | After calibration, there is a small imbalance in the 10 mV/div setting, about 0.05 div. This is a design flaw. | ||
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}} | }} | ||
{{EndSpecs}} | {{EndSpecs}} | ||
==Links== | ==Links== | ||
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Tek 11a71 right internal.jpg|right internal | Tek 11a71 right internal.jpg|right internal | ||
</gallery> | </gallery> | ||
{{Custom ICs|11A71}} | |||
[[Category:11000 series plugins]] | [[Category:11000 series plugins]] | ||
[[Category:Tekprobe BNC]] | [[Category:Tekprobe BNC]] | ||
[[Category:Introduced in 1987]] | [[Category:Introduced in 1987]] | ||