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Tektronix 7A29P
1 GHz programmable amplifier
7A29 front view (sans options)

Compatible with 7000-series scopes

Produced from 1988 to 1991

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(All manuals in PDF format unless noted otherwise)
Manuals – Specifications – Links – Pictures

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 25 V 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


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.





Some Parts Used in the 7A29P

Part Part Number(s) Class Description Used in
155-0076-00 155-0076-00 Monolithic integrated circuit input protection and probe logic 465 485 7A29 7A29P 11A52 11A71 11A72 SCD1000
155-0164-00 155-0164-00 Hybrid integrated circuit time slot switch 7A16P 7B90P 7A29P
155-0175-00 155-0175-00 155-0175-05 Monolithic integrated circuit broadband amplifier 7904A 7912HB 7934 7104 R7103 7A29 7A29P 7F10 067-0587-02 067-0587-10 11A71 SCD1000 EG&G N-AM-173A
155-0180-00 155-0180-00 Hybrid integrated circuit fast input protection 7A29 7A29P 7F10 11A71
155-0181-00 155-0181-00 Hybrid integrated circuit input amplifier 7A29 7A29P 7F10 11A71