11A71: Difference between revisions
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* [http://w140.com/tek_11a71_service.pdf Tektronix 11A71 Service Manual (PDF)] | * [http://w140.com/tek_11a71_service.pdf Tektronix 11A71 Service Manual (PDF)] | ||
* [[Media:Tek 11A71 schematics.pdf|Tektronix 11A71 Schematics]] | |||
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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. | ||
Revision as of 18:39, 13 November 2017
Template:Plugin Sidebar 2 The Tektronix 11A71 a single-channel 1 GHz amplifier for 11000-series scopes.
The 11A71 is derived from the 7A29.
Key Specifications
| Bandwidth | DC to 1 GHz |
|---|---|
| Number of Inputs | 1 |
| Rise time | 350 ps in 1 GHz mainframe such as the 11402, 11402A. 11403, 11403A, DSA601A, or DSA602A |
| Deflection | 1 mV to 1V per division in 1-2-5 sequence |
| Input impedance | 50 Ω via a Tekprobe BNC connector on the front on the plug-in |
| Features |
|
Internals
Custom Tek chips used: 155-0180-00, 155-0181-00, 155-0175-00, 155-0076-00, ...
Links
Pictures
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11A71 external view
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Block diagram
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Right side of the 11A71 plug-in (analog board)
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Input section. Cable loop acts as a delay line, connects to the input attenuator.
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Input attenuator, 50 Ω signal path. Laser-trimmed thick film resistors. AC coupling capacitor in plastic support.
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Amplifier section. Blue cable from input attenuator connects to the 155-0180-00 input protection circuit. Signal is differential from after the first amplifier up to the AD converter in the mainframe.
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Compensation trimmers
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Close-up of late-80s RF design
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Digital board, 8031 MCU
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Digital daughter board
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left side
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right side
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Attenuator
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Kernel
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Amplifier
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Interface
