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7A12 (view source)

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{{Plugin Sidebar 2|
{{Plugin Sidebar |
title=Tektronix 7A12 |
manufacturer=Tektronix | type=7A12 |
summary=120 MHz dual channel amplifier|
summary=120 MHz dual channel amplifier|
image=7a12.jpg |  
image=7a12.jpg |  
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introduced=1969 |  
introduced=1969 |  
discontinued=1974 |
discontinued=1974 |
series=[[7000-series scopes]]|
series=7000-series scopes|
designers=Roy Hayes|
manuals=
manuals=
* [http://bama.edebris.com/download/tek/7a12/tek-7a12.pdf Tektronix 7A12 Manual (PDF)]
* [[Media:070-0977-01.pdf|Tektronix 7A12 Manual]] (PDF, OCR)
* [http://w140.com/smb/7a12_sm.pdf Tektronix 7A12 Manual (OCR, PDF)]
* [http://bama.edebris.com/download/tek/7a12/tek-7a12.pdf Tektronix 7A12 Manual @ BAMA] (PDF)
}}
}}
The '''Tektronix 7A12''' is a 120 MHz dual-trace vertical plug-in for [[7000-series scopes]].


The '''Tektronix 7A12''' is a 120 MHz dual-trace vertical plug-in for [[7000-series scopes]].
Switches on the front panel control [[miniature relays]] in the signal path, such as those selecting input attenuators, through logic circuits.
It was designed by Roy Hayes
It uses the [[155-0032-00]] as a gain stage and the [[155-0022-00]] for channel switching.
(who also designed the [[3A3]] before leaving for HP Loveland in Jan 1971).
The 7A12 has relays in the signal path for the input attenuators.
The relays are controlled by logic in the 7A12, which is controlled by switches on the front panel of the 7A12.


The 7A12 uses the [[155-0032-00]] as a gain stage and the [[155-0022-00]] for channel switching.
The 7A12 was designed by [[Roy Hayes]] (who also designed the [[3A3]] and [[3A8]] before leaving for HP Loveland in Jan 1971).
The Evaluation Engineer for the 7A12 was [[Peter Starič]], co-author of the book "Wideband Amplifiers" with Erik Margan.


==Specifications==
{{BeginSpecs}}
[[Category:Specifications needed]] ''please add''
{{Spec | Bandwidth | 120 MHz (79xx) / 105 MHz (77xx) / 55 MHz (74xx) }}
{{Spec | Deflection | 5 mV/Div to 5 V/Div (1–2–5), variable up to 12.5 V/Div }}
{{Spec | Input impedance | 1 MΩ // 24 pF }}
{{Spec | Maximum input | 5 V (0.5 W) − no damage below 10 V (2 W) }}
{{Spec | Timing | Delay difference between channels < 500 ps }}
{{Spec | Channel Isolation | At least 3000:1 at 75 MHz }}
{{Spec | Maximum Input Voltage | 350 V DC + Peak AC at 1 kHz or less}}
{{EndSpecs}}


==Links==
==Links==
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<gallery>
<gallery>
File:7a12.jpg|Front view
7a12.jpg|Front view
File:Tek 7a12.jpg|Front view
Tek 7a12.jpg|Front view
File:Tek 7a12 attenuators.png|Attenuator schematic with relays
Tek 7a12 attenuators.png|Attenuator schematic with relays
Image:Tek 7a12 amplifier pcb.jpg|7A12 Amplifier PCB
Tek 7a12 amplifier pcb.jpg|7A12 Amplifier PCB
</gallery>
</gallery>


{{Custom ICs|7A12}}


[[Category:7000 series vertical plugins]]
[[Category:7000 series vertical plugins]]
Retrieved from "https://w140.com/tekwiki/wiki/Special:MobileDiff/21416...65783"

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