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The Tektronix 7A24 is a 400MHz dual-channel vertical plug-in for [[7000-series scopes]].
{{Plugin Sidebar
It has 50-ohm [[Connectors#BNC|BNC]] inputs.
|manufacturer=Tektronix
The inputs are fused.
|series=7000-series scopes
|type=7A24
|summary=400 MHz dual channel vertical amplifier
|image=7a24 front.jpg
|caption=7A24 front panel
|introduced=1974
|discontinued=1991
|designers=Tom Rousseau
|manuals=
* [[Media:070-1485-00.pdf|Tektronix 7A24 Manual]] (early version)
* [[Media:070-2391-00.pdf|Tektronix 7A24 Manual]] (later version SN B103000+, OCR)
}}
The '''Tektronix 7A24''' is a 400 MHz dual-channel vertical plug-in for [[7000-series scopes]] with (fused) 50 Ω [[BNC]] inputs.  It is the fastest multi-channel plug-in available for the 7000 series.  Unlike most other plug-ins, it does not offer AC input coupling.  
 
A single-channel version was planned as the [[7A25]] but did not make it into production.
 
The 7A24 would typically have been used in [[7834]], [[7844]] or [[7854]] mainframes.
The recommended probes were the [[P6056]] and [[P6057]].
The recommended probes were the [[P6056]] and [[P6057]].


* [http://bama.edebris.com/download/tek/7a24/tek-7a24.pdf Tektronix 7A24 Manual (PDF)]
The 75 MHz [[7A18]] and 200 MHz [[7A26]] share the same front panel layout and operation (but have 1 MΩ inputs).
* [http://w140.com/smb/7a24_sm.pdf Tektronix 7A24 Manual (OCR, PDF)]
 
{{BeginSpecs}}
{{Spec | Bandwidth      | 400 MHz (71xx) / 350 MHz (79xx) / 300 MHz (78xx) }}
{{Spec | Deflection      | 5 mV/Div to 1 V/Div (1–2–5), variable ×2.5 (up to 2.5 V/Div) }}
{{Spec | Input impedance | 50 Ω }}
{{Spec | Maximum input  | 5 V (0.5 W) − no damage below 10 V (2 W) }}
{{Spec | Timing          | Delay difference between channels <200 ps }}
{{EndSpecs}}
 
==Internals==
 
The 7A24's input attenuators are similar to that in the [[7A19]], using replaceable ceramic
attenuator modules held to the switching PCB using steel springs.
 
The amplifier is built using the Tek-made differential amplifier [[155-0078-00|155-0078-xx]] (four units per channel in early, five in late versions; various grades). 
In the 5 mV/Div range only, the amplifier gain is doubled electronically.
The signal trace layout on the PCB is designed to provide [[T-coil peaking]].
 
The 7A24 does not use the ±50 V supplies provided by the mainframe.
 
==Links==
 
* [https://www.amplifier.cd/Test_Equipment/Tektronix/Tektronix_7000_series_amplifier/amplifier_7A24.htm Tek 7A24 page @ amplifier.cd]
* [http://www.barrytech.com/tektronix/tek7000/tek7a24.html Tek 7A24 page @ barrytech.com]
 
==Pictures==


<gallery>
<gallery>
Image:Tek 7a24 1.jpg
Tek 7a24 1.jpg
Image:Tek 7a24 2.jpg
Tek 7a24 2.jpg
Image:Tek 7a24 3.jpg
Tek 7a24 3.jpg
File:7a24 front.jpg|Front
7a24 front.jpg       | Front
File:7a24 frontend.jpg|Attenuator switches
7a24-left.jpg        | Left side (later version)
File:7a24 left board.jpg|Aplifier board
7a24-right.jpg      | Right side (later version)
File:7a24 right front.jpgRight front
7a24 frontend.jpg   | Attenuator switches
File:7a24 right rear.jpg|Right rear
7a24 left board.jpg | Amplifier board
7a24 right front.jpg | Right front
7a24 right rear.jpg | Right rear
7a24-signal-out.jpg  | [[Tektronix Cartoons|Cartoon]] in schematic: Signal Out
</gallery>
</gallery>
==Components==
{{Parts|7A24}}
[[Category:7000 series vertical plugins]]

Revision as of 07:33, 12 December 2023

Tektronix 7A24
400 MHz dual channel vertical amplifier
7A24 front panel

Compatible with 7000-series scopes

Produced from 1974 to 1991

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

The Tektronix 7A24 is a 400 MHz dual-channel vertical plug-in for 7000-series scopes with (fused) 50 Ω BNC inputs. It is the fastest multi-channel plug-in available for the 7000 series. Unlike most other plug-ins, it does not offer AC input coupling.

A single-channel version was planned as the 7A25 but did not make it into production.

The 7A24 would typically have been used in 7834, 7844 or 7854 mainframes. The recommended probes were the P6056 and P6057.

The 75 MHz 7A18 and 200 MHz 7A26 share the same front panel layout and operation (but have 1 MΩ inputs).

Key Specifications

Bandwidth 400 MHz (71xx) / 350 MHz (79xx) / 300 MHz (78xx)
Deflection 5 mV/Div to 1 V/Div (1–2–5), variable ×2.5 (up to 2.5 V/Div)
Input impedance 50 Ω
Maximum input 5 V (0.5 W) − no damage below 10 V (2 W)
Timing Delay difference between channels <200 ps

Internals

The 7A24's input attenuators are similar to that in the 7A19, using replaceable ceramic attenuator modules held to the switching PCB using steel springs.

The amplifier is built using the Tek-made differential amplifier 155-0078-xx (four units per channel in early, five in late versions; various grades). In the 5 mV/Div range only, the amplifier gain is doubled electronically. The signal trace layout on the PCB is designed to provide T-coil peaking.

The 7A24 does not use the ±50 V supplies provided by the mainframe.

Links

Pictures

Components

Some Parts Used in the 7A24

Part Part Number(s) Class Description Used in
155-0078-00 155-0078-xx 155-0273-00 155-0274-00 Monolithic integrated circuit broadband amplifier 464 465 466 468 475 475A 475M 485 7834 7844 7854 7904 R7903 R7912 7912AD 7912HB 7104 7A16A 7A16P 7A24 7A26 7A42 067-0587-01 067-0680-00 AM503 PG502 PG508 DC510 DC5010 FG5010