7B81P: Difference between revisions

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{{Plugin Sidebar 2 |
{{Plugin Sidebar |
title=Tektronix 7B81P |
manufacturer=Tektronix | type=7B81P |
summary=Programmable Timebase |
summary=Programmable Timebase |
image=7B81P Front.jpg |  
image=7B81P Front.jpg |  
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introduced=(?) |
introduced=(?) |
discontinued=(?) |
discontinued=(?) |
series=[[7000-series scopes]]|
series=7000-series scopes|
manuals=
manuals=
* ''please add'' [[Category:Manual needed]]
* ''please add'' [[Category:Manual needed]]
}}
}}


The 7B81P was probably designed in 1975.
The '''Tektronix 7B81P''' is a programmable time base plug-in for [[7000-series scopes]] that was probably designed in 1975.
 
It is composed of a digital board, a trigger board, and a sweep board.
It is composed of a digital board, a trigger board, and a sweep board.
On the digital board, there is a Motorola 6800 microprocessor and six 6820 Peripheral Interface Adapter ICs to provide more I/O pins.
On the digital board, there is a [[Motorola 6800]] microprocessor and six 6820 Peripheral Interface Adapter ICs to provide more I/O pins.
On the trigger board, there is a [[155-0126-00]], a [[155-0109-00]], two AD7511 analog switch ICs, an MC1408 DAC, a CD4053 analog switch, and a couple of opamps.
On the trigger board, there is a [[155-0126-00]], a [[155-0109-00]], two AD7511 analog switch ICs, an MC1408 DAC, a CD4053 analog switch, and a couple of opamps.
The sweep board is mostly discrete and makes use of Tek-made timebase capacitors.
The sweep board is mostly discrete and makes use of Tek-made timebase capacitors.


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7B81P Right Side.jpg
7B81P Right Side.jpg
</gallery>
</gallery>
{{Custom ICs|7B81P}}


[[Category:7000 series horizontal plugins]]
[[Category:7000 series horizontal plugins]]
[[Category:7000_series_programmable_plugins]]

Revision as of 06:17, 16 August 2021

Tektronix 7B81P
Programmable Timebase
Tektronix 7B81P Timebase plug-in

Compatible with 7000-series scopes

Produced from (?) to (?)

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


The Tektronix 7B81P is a programmable time base plug-in for 7000-series scopes that was probably designed in 1975.

It is composed of a digital board, a trigger board, and a sweep board. On the digital board, there is a Motorola 6800 microprocessor and six 6820 Peripheral Interface Adapter ICs to provide more I/O pins. On the trigger board, there is a 155-0126-00, a 155-0109-00, two AD7511 analog switch ICs, an MC1408 DAC, a CD4053 analog switch, and a couple of opamps.

The sweep board is mostly discrete and makes use of Tek-made timebase capacitors.

Key Specifications

  • please add

Pictures

Custom ICs used in the 7B81P

Page Model Part nos Description Designers Used in
155-0109-00 M120B 155-0109-00 155-0109-01 trigger Gary Vance 5B25N 5B31 5B40 5B42 5B44 5S14N 7B50A 7B53A 7B80 7B85 7B87 7B81P 7B90P 7S14 7612D SC502 SC503 SC504
155-0126-00 M121 155-0126-00 trigger source selector and P-P auto amplifier Art Metz 7B50A 7B80 7B85 7B87 7B81P 7B90P