7A29: Difference between revisions
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The '''Tektronix 7A29''' is a 1 GHz single-channel vertical plug-in for [[7000-series scopes]]. It is primarily intended for the [[7103]] and [[7104]]. | The '''Tektronix 7A29''' is a 1 GHz single-channel vertical plug-in for [[7000-series scopes]]. It is primarily intended for the [[7103]] and [[7104]]. | ||
Like the [[7A19]], it has no variable gain control, but a variable signal delay was available as an option. | Like the [[7A19]], it has no variable gain control, but a variable signal delay was available as an option. | ||
There is also a [[7A29P]], which has digitally programmable gain, intended for the [[:Category:7000 series digitizer mainframes|7000 series digitizers]]. | There is also a [[7A29P]], which has digitally programmable gain, intended for the [[:Category:7000 series digitizer mainframes|7000 series digitizers]]. | ||
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* single channel | * single channel | ||
* Option 4: variable delay | * Option 4: variable delay | ||
==Internals== | |||
The 7A29 employs a number of Tek-made custom [[Hypcon]]-packaged hybrids, the , | |||
[[155-0180-00]] fast input protection, [[155-0181-00]] input amplifier and [[155-0175-00]] trigger amplifier (2 ×). | |||
It uses a "feed-beside" scheme to compensate for low-frequency anomalies in the frequency response that are attributed to transistor heating. | |||
The input connector is a special Tek-made part that is exactly 50 Ω. Typical BNC connectors are around 52 Ω. | |||
==Pictures== | ==Pictures== | ||
Revision as of 10:46, 28 March 2015
Template:Plugin Sidebar 2 The Tektronix 7A29 is a 1 GHz single-channel vertical plug-in for 7000-series scopes. It is primarily intended for the 7103 and 7104. Like the 7A19, it has no variable gain control, but a variable signal delay was available as an option.
There is also a 7A29P, which has digitally programmable gain, intended for the 7000 series digitizers.
Specifications
- Bandwidth: 1 GHz (in 7104)
- Input impedance: 50 Ω
- 10 mV/div to 1V/div
- single channel
- Option 4: variable delay
Internals
The 7A29 employs a number of Tek-made custom Hypcon-packaged hybrids, the , 155-0180-00 fast input protection, 155-0181-00 input amplifier and 155-0175-00 trigger amplifier (2 ×).
It uses a "feed-beside" scheme to compensate for low-frequency anomalies in the frequency response that are attributed to transistor heating. The input connector is a special Tek-made part that is exactly 50 Ω. Typical BNC connectors are around 52 Ω.
Pictures
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photo of 7A29 from manual (normal and option 4 units)
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input amplifier schematic
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output amplifier schematic
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7A29, left view (Opt. 4 variable delay line enclosure above PCB)
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7A29 amplifiers
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7A29, right side, rear
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7A29, right side, front
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7A29P
