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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 | |||
* [[Media:070- | |designers= | ||
* [[Media:070- | |manuals= | ||
* [[Media:070-6531-00.pdf|Tektronix 2221 Service Manual]] | |||
* [[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. | ||
The 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 }} | ||
| Line 42: | Line 46: | ||
* 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}} | ||
| Line 48: | Line 55: | ||
==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] | |||
{{Documents|Link=2221}} | |||
{{PatentLinks|2221}} | |||
==Internals== | ==Internals== | ||
Custom Tek chips used include [[155-0274-00]](A1U130, A1U180), [[155-0273-00]] (A2U30, A2U80), and [[155-0022-00]] (A10U2101). | 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== | ||
| Line 61: | Line 74: | ||
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 07:49, 19 August 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.
The 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
Documents Referencing 2221
- (no results)
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).
