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{{Oscilloscope Sidebar | | {{Oscilloscope Sidebar | ||
|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 | ||
|discontinued=1990 | |||
|designers= | |||
|manuals= | |||
* [[Media: | * [[Media:070-6531-00.pdf|Tektronix 2221 Service Manual]] | ||
* [[Media:070- | * [[Media:070-6530-00.pdf|Tektronix 2221 Operators Manual]] (OCR) | ||
<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> | ||
{{ROM Images}} | |||
}} | }} | ||
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]]. It was [[introduced in 1988]]. | ||
The updated model '''2221A''' increased bandwidth to 100 MHz and 100 MS/s. | The updated model '''[[2221A]]''' (1991) increased bandwidth to 100 MHz and 100 MS/s. | ||
Recommended cart is the [[K212]]. | |||
{{BeginSpecs}} | {{BeginSpecs}} | ||
{{Spec | Analog bandwidth | 60 MHz (50 MHz in 2 mV/Div range), 10 MHz limit switchable }} | {{Spec | Analog bandwidth | 60 MHz (50 MHz in 2 mV/Div range), 10 MHz limit switchable }} | ||
{{Spec | Rise time (analog mode) | 5.8 ns (7 ns in 2 mV/Div range) }} | {{Spec | Rise time (analog mode) | 5.8 ns (7 ns in 2 mV/Div range) }} | ||
{{Spec | Sampling rate | 20 MS/s single channel, 10 MS/s in ALT or CHOP }} | {{Spec | Sampling rate | 20 MS/s single channel, 10 MS/s in ALT or CHOP }} | ||
{{Spec | Memory depth | 4 K samples single channel, 2 K per channel in ALT or CHOP }} | {{Spec | Memory depth | 4 K samples single channel, 2 K per channel in ALT or CHOP }} | ||
{{Spec | Resolution | 8 bits }} | {{Spec | Resolution | 8 bits }} | ||
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* TV line and field trigger | * TV line and field trigger | ||
* Variable holdoff | * Variable holdoff | ||
* GPIB | }} | ||
{{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 2221 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}} | |||
[[Category:2200 series scopes]] | [[Category:2200 series scopes]] | ||
[[Category:Digital storage scopes]] | [[Category:Digital storage scopes]] | ||
Latest revision as of 05:56, 6 May 2024
The Tektronix 2221 is a portable, 60 MHz, 20 MS/s combination analog / digital storage scope, sister model of 2220 and 2230. It was introduced in 1988. The updated model 2221A (1991) increased bandwidth to 100 MHz and 100 MS/s.
Recommended cart is the K212.
Key Specifications
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 |
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 |
|
Options |
|
Links
- Troubleshooting tips on 2200 PSU
- Tektronix 2230 Family Marketing Presentation @ YouTube courtesy of the Vintage Tek Museum
Internals
The 2221 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 |