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{{Oscilloscope Sidebar |
{{Oscilloscope Sidebar  
title=Tektronix 2221 |
|manufacturer=Tektronix
summary=60 (100) MHz portable DSO |
|series=2200-series scopes
image=Tek 2221 front.JPG |
|model=2221  
caption=Tektronix 2221 |
|summary=60 (100) MHz portable DSO  
introduced=1988 |
|image=Tek 2221 front.JPG  
discontinued=(?) |
|caption=Tektronix 2221  
manuals=
|introduced=1988  
* [[Media:070-6531-00.pdf|Tektronix 2221 Service Manual (PDF)]]
|discontinued=(?)  
* [http://w140.com/tek_2230_2221_2220_desc.pdf Tektronix 2230/2221/2220 Description (PDF)]
|designers=
* [http://w140.com/tek_2221a_user_manual.pdf Tektronix 2221A User Manual (PDF)]
|manuals=
* [[List_of_manuals_that_are_needed|Service manual needed]]
'''2221'''
* [[Media:2230_2221_2220.pdf|Tektronix 2230/2221/2220 Description (PDF, OCR, bad-OCR)]]
* [[Media:070-6531-00.pdf|Tektronix 2221 Service Manual]]
* [[Media:070-8156-02.pdf|Tektronix 2221A User Manual (PDF, OCR, bad-OCR)]]
* [[Media:070-6530-00.pdf|Tektronix 2221 Operators Manual]] (OCR)
 
'''2221A'''
* [[Media:070-8156-02.pdf|Tektronix 2221A User Manual -02]] (bad-OCR)
* [[Media:070-8156-01.pdf|Tektronix 2221A User Manual -01]]
* [[Media:070-8157-00.pdf|Tektronix 2221A Service Manual]]
 
<small>
<small>
'''Modifications '''
'''Modifications '''
* [http://hakanh.com/dl/docs/kitinstructions/040-1344-00.pdf 040-1344-00 CRT Noise Reduction] (1991)
* [http://hakanh.com/dl/docs/kitinstructions/040-1344-00.pdf 040-1344-00 CRT Noise Reduction] (1991)
'''Other'''
* [[Media:2230_2221_2220.pdf|Tektronix 2230/2221/2220 Description]] (bad-OCR)
</small>
</small>
}}
}}
The '''Tektronix 2221''' is a portable, 60 MHz, 20 MS/s combination analog / digital storage scope, sister model of [[2220]] and [[2230]].
The '''Tektronix 2221''' is a portable, 60 MHz, 20 MS/s combination analog / digital storage scope, sister model of [[2220]] and [[2230]].
The updated model '''2221A''' increased bandwidth to 100 MHz and 100 MS/s.
The updated model '''2221A''' increased bandwidth to 100 MHz and 100 MS/s.
Recommended cart is the [[K212]].


{{BeginSpecs}}
{{BeginSpecs}}
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* TV line and field trigger
* TV line and field trigger
* Variable holdoff  
* Variable holdoff  
* GPIB or RS232 optional
}}
{{Spec | Options |
* Opt.10 – GPIB (board 671-0304-00)
* Opt.12 – RS232 (board 671-0303-00)
}}
}}
{{EndSpecs}}
{{EndSpecs}}
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==Links==
==Links==
* [http://www.hakanh.com/dl/docs/troubleshooting_tips_on_2200_ps.pdf Troubleshooting tips on 2200 PSU]
* [http://www.hakanh.com/dl/docs/troubleshooting_tips_on_2200_ps.pdf Troubleshooting tips on 2200 PSU]
* [https://www.youtube.com/watch?v=n9qFlJmcxqo Tektronix 2230 Family Marketing Presentation] @ YouTube courtesy of the [https://vintagetek.org Vintage Tek Museum]
==Internals==
The 2230 is controlled by an [[Intel 8088]] microprocessor with firmware in a pair of 27512 EPROMs, and six TMS4426 16K×4 DRAMs. 
The A/D converter is a [[156-2248-00|Sony CX20052A]] (8 bit, 20 MHz, ECL output).  A pair of MCM2016H 2K×8, 70 ns RAMs serve as acquisition memory.
Custom Tek chips used include [[155-0274-00]] (A1U130, A1U180), [[155-0273-00]] (A2U30, A2U80), and [[155-0022-00]] (A10U2101).  There is also a semi-custom part (A10U9208 Display Controller, 156-2452-00).


==Pictures==
==Pictures==
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Tek 2221 ioclose.JPG
Tek 2221 ioclose.JPG
</gallery>
</gallery>
==Components==
{{Parts|2221}}
{{Parts|2221A}}


[[Category:2200 series scopes]]
[[Category:2200 series scopes]]

Latest revision as of 15:12, 6 October 2023

Tektronix 2221
60 (100) MHz portable DSO
Tektronix 2221

Produced from 1988 to (?)

Manuals
Manuals – Specifications – Links – Pictures

The Tektronix 2221 is a portable, 60 MHz, 20 MS/s combination analog / digital storage scope, sister model of 2220 and 2230. The updated model 2221A increased bandwidth to 100 MHz and 100 MS/s.

Recommended cart is the K212.

Key Specifications

     — 2221 —
Analog bandwidth 60 MHz (50 MHz in 2 mV/Div range), 10 MHz limit switchable
Rise time (analog mode) 5.8 ns (7 ns in 2 mV/Div range)
Sampling rate 20 MS/s single channel, 10 MS/s in ALT or CHOP
     — 2221A —
Analog bandwidth 100 MHz (80 MHz in 2 mV/Div range), 20 MHz limit switchable
Rise time (analog mode) 3.5 ns (4.4 ns in 2 mV/Div range)
Sampling rate 100 MS/s single channel, 50 MS/s in ALT or CHOP
     — Common —
Memory depth 4 K samples single channel, 2 K per channel in ALT or CHOP
Resolution 8 bits
Deflection 2 mV/Div to 5 V/Div, 1-2-5
Glitch capture > 100 ns
CRT 8 x 10 cm, P31 phosphor, 14 kV acceleration
Outputs analog X/Y plotter output, 500 mV/Div, pen lift relay contact
Power 90-250 V, 85 W, fan-cooled
Weight 8.2 kg (18 lb.)
Features
  • Reference waveform memory
  • Cursors and readout
  • Signal averaging
  • TV line and field trigger
  • Variable holdoff
Options
  • Opt.10 – GPIB (board 671-0304-00)
  • Opt.12 – RS232 (board 671-0303-00)

Links

Internals

The 2230 is controlled by an Intel 8088 microprocessor with firmware in a pair of 27512 EPROMs, and six TMS4426 16K×4 DRAMs. The A/D converter is a Sony CX20052A (8 bit, 20 MHz, ECL output). A pair of MCM2016H 2K×8, 70 ns RAMs serve as acquisition memory.

Custom Tek chips used include 155-0274-00 (A1U130, A1U180), 155-0273-00 (A2U30, A2U80), and 155-0022-00 (A10U2101). There is also a semi-custom part (A10U9208 Display Controller, 156-2452-00).

Pictures

Components

Some Parts Used in the 2221

Part Part Number(s) Class Description Used in
155-0022-00 155-0022-00 • 155-0022-01 Monolithic integrated circuit analog multiplexer 147 • 148 • 149 • 335 • 468 • 1430 • 1441 • 1461 • 1900 • 1910 • 2220 • 2221 • 2230 • 5223 • 5403 • 5440 • 5441 • 5443 • 5444 • 5A38 • 7313 • 7403N • 7503 • 7504 • 7514 • 7603 • AN/USM-281C • 7613 • 7623 • 7623A • 7633 • 7704 • R7704 • 7704A • 7834 • 7844 • 7854 • R7912 • 7912AD • 7912HB • 7904 • R7903 • 7904A • 7934 • 7A12 • 7A18 • 7A18A • 7A18N • 7B52 • 7B53N • 7D10 • 7D11 • 7D12 • NT-7000 • P7001
155-0124-00 155-0124-00 Monolithic integrated circuit horizontal preamplifier 455 • SC504 • 2221 • 2230 • 2232 • 2336 • 2337
155-0273-00 155-0273-00 Monolithic integrated circuit broadband vertical amplifier 2220 • 2221 • 2230 • 2232
155-0274-00 155-0274-00 Monolithic integrated circuit broadband vertical amplifier 2220 • 2221 • 2230
234-0107-20 234-0107-20 Monolithic integrated circuit trigger 2221 • 2230 • 2232
Intel 8086 Monolithic integrated circuit 16-bit microprocessor 1240 • 2220 • 2221 • 2230 • 2246 • 2232 • 2245A • 4114 • 4115
T4655 154-0861-00 • 154-0861-10 • 154-0930-00 CRT CRT 2220 • 2221 • 2221A • 2230 • 2232
TMS9914 156-1444-00 • 156-1444-01 Monolithic integrated circuit GPIB controller 2221 • 2230 • 2424L • 2440 • 4052A • 4054A • 021-0374-00 • 067-1137-99 • DC5009 • DC5010 • DM5010 • DM5120 • DM5520 • MI5010 • SG5010 • SG5030 • SI5010 • PS5004 • PS5010


Some Parts Used in the 2221A

Part Part Number(s) Class Description Used in
T4655 154-0861-00 • 154-0861-10 • 154-0930-00 CRT CRT 2220 • 2221 • 2221A • 2230 • 2232
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