7A29P: Difference between revisions
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It is primarily intended for the [[7912HB]] and the [[7854]] when paired with the [[021-0374-00]]. | It is primarily intended for the [[7912HB]] and the [[7854]] when paired with the [[021-0374-00]]. | ||
{{ | {{BeginSpecs}} | ||
{{Spec | Bandwidth | 750 MHz (in [[7912HB]]) }} | |||
{{Spec | Input impedance | 50 Ω}} | |||
{{Spec | Max. input | max. 5 V<sub>RMS</sub> or 25V peak; max. 100 V additional DC component in AC mode }} | |||
{{Spec | Deflection | 10 mV/div to 1 V/div, 1-2-5, ±2%; variable 2.5:1, reduced bandwidth }} | |||
{{Spec | Channels | Single channel }} | |||
{{EndSpecs}} | |||
==Internals== | ==Internals== | ||
Revision as of 03:46, 14 August 2023
The Tektronix 7A29P is a programmable 1 GHz single-channel vertical plug-in for 7000-series scopes. It is primarily intended for the 7912HB and the 7854 when paired with the 021-0374-00.
Key Specifications
| Bandwidth | 750 MHz (in 7912HB) |
|---|---|
| Input impedance | 50 Ω |
| Max. input | max. 5 VRMS or 25V peak; max. 100 V additional DC component in AC mode |
| Deflection | 10 mV/div to 1 V/div, 1-2-5, ±2%; variable 2.5:1, reduced bandwidth |
| Channels | Single channel |
Internals
The 7A29P employs a number of Tek-made custom Hypcon-packaged hybrids initially designed for the 7A29 and the 7104, the 155-0180-00 fast input protection, 155-0181-00 input amplifier and 155-0175-00 trigger amplifier (2 ×). It also uses the 155-0076-00 input protection chip initially developed for the 485.
It uses a "feed-beside" scheme implemented with standard low-frequency operational amplifiers 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.
Links
- Tek 7A29P @ amplifier.cd including internal pictures
Pictures
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7A29P
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7A29P
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7A29P
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7A29P
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7A29P
Internal
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7A29P right
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7A29P left
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Location of the connectors for the 021-0374-00 GPIB decoder on a 7A29P
Custom ICs used in the 7A29P
| Page | Model | Part nos | Description | Designers | Used in |
|---|---|---|---|---|---|
| 155-0076-00 | M94 | 155-0076-00 | input protection and probe logic | John Addis • Wink Gross | 465 • 485 • 7A29 • 7A29P • 11A52 • 11A71 • 11A72 • SCD1000 |
| 155-0164-00 | H526(?) | 155-0164-00 | time slot switch | 7A16P • 7B90P • 7A29P | |
| 155-0175-00 | H476 | 155-0175-00 • 155-0175-05 | broadband amplifier | John Addis • Wink Gross • Carl Battjes | 7904A • 7912HB • 7934 • 7104 • R7103 • 7A29 • 7A29P • 7F10 • 067-0587-02 • 067-0587-10 • 11A71 • SCD1000 • EG&G N-AM-173A |
| 155-0180-00 | H489 | 155-0180-00 | fast input protection | John Addis • Wink Gross | 7A29 • 7A29P • 7F10 • 11A71 |
| 155-0181-00 | H500 | 155-0181-00 | input amplifier | John Addis • Wink Gross | 7A29 • 7A29P • 7F10 • 11A71 |