7B81P: Difference between revisions

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{{Plugin Sidebar |
{{Plugin Sidebar
manufacturer=Tektronix | type=7B81P |
|manufacturer=Tektronix
summary=Programmable Timebase |
|series=7000-series scopes
image=7B81P Front.jpg |  
|type=7B81P
caption=Tektronix 7B81P Timebase plug-in |
|summary=programmable timebase
introduced=(?) |
|image=7B81P Front.jpg  
discontinued=(?) |
|caption=Tektronix 7B81P Timebase plug-in
series=7000-series scopes|
|introduced=(?)
manuals=
|discontinued=(?)
|manuals=
* ''please add'' [[Category:Manual needed]]
* ''please add'' [[Category:Manual needed]]
}}
}}
 
The '''Tektronix 7B81P''' is a programmable time base plug-in for [[7000-series scopes]] that was probably designed in 1975.  According to Dennis Tillman, the 7B81P never went into production.  
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 [[Motorola 6820|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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</gallery>
</gallery>


{{Custom ICs|7B81P}}
===Prototype A03===
<gallery>
Tek_7b81p_front.jpg
Tek_7b81p_left.jpg
Tek_7b81p_right.jpg
Tek_7b81p_serial.jpg
Tek_7b81p_detail_sticker_interface.jpg
Tek_7b81p_detail_sticker_eproms.jpg
Tek_7b81p_detail_sticker_programming.jpg
Tek_7b81p_frontpanel.jpg
Tek_7b81p_frontpanel_rear.jpg
Tek_7b81p_switch_front.jpg
Tek_7b81p_switch_rear.jpg
Tek_7b81p_led_front.jpg
Tek_7b81p_led_rear.jpg
Tek_7b81p_trigger_front.jpg
Tek_7b81p_trigger_rear.jpg
Tek_7b81p_sweep_front.jpg
Tek_7b81p_sweep_rear.jpg
Tek_7b81p_programming_front.jpg
Tek_7b81p_programming_rear.jpg
Tek_7b81p_programming_without_sticker.jpg
Tek_7b81p_front_frame.jpg
Tek_7b81p_front_frame_rear.jpg
</gallery>
 
 
==Components==
{{Parts|7B81P}}


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

Latest revision as of 13:28, 12 April 2024

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. According to Dennis Tillman, the 7B81P never went into production.

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

Prototype A03


Components

Some Parts Used in the 7B81P

Part Part Number(s) Class Description Used in
155-0109-00 155-0109-00 155-0109-01 Monolithic integrated circuit trigger 5B25N 5B31 5B40 5B42 5B44 5S14N 7B50A 7B53A 7B80 7B85 7B87 7B81P 7B90P 7S14 7612D SC502 SC503 SC504
155-0126-00 155-0126-00 Monolithic integrated circuit trigger source selector and P-P auto amplifier 7B50A 7B80 7B85 7B87 7B81P 7B90P
MC1408 156-0509-00 Monolithic integrated circuit 8-bit multiplying DAC DF1 7B81P
Motorola 6800 156-0426-00 156-2413-00 156-5472-01 Monolithic integrated circuit 8-bit microprocessor 021-0206-00 021-0374-00 067-0902-00 067-1137-99 222 222A 222PS 2424L 2445 2465 2467 4051 7250 7912 7912AD 7A16P 7A29P 7B81P 7B90P 833 834 835 836 CG5001 CG551AP CG5010 CG5011 DF1 DF2 DM5010 FG5010 MI5010 SI5010 PS5004 PS5010 SG5010 Keithley 181 Keithley 182 Keithley 175 Keithley 175A Keithley 191 Keithley 192 Keithley 195 Keithley 195A Keithley 197 Keithley 220 Keithley 224 Keithley 230 Keithley 263 Keithley 485 Keithley 580 Keithley 617
Motorola 6820 156-0427-00 Monolithic integrated circuit "Peripheral Interface Adapter (PIA)" 021-0206-00 7A16P 7B81P 7B90P Keithley 175A Keithley 197 Keithley 485 Keithley 580