11A71
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 | 1 GHz |
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Input impedance | 50 Ω via a Tekprobe BNC connector on the front on the plug-in |
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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