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2221A: Difference between revisions
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{{Oscilloscope Sidebar | |||
|manufacturer=Tektronix | |||
|series=2200-series scopes | |||
|model=2221 | |||
|summary=60 (100) MHz portable DSO | |||
|image=Tek 2221 front.JPG | |||
|caption=Tektronix 2221 | |||
|introduced=1991 | |||
|discontinued=(?) | |||
|designers= | |||
|manuals= | |||
* [[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> | |||
'''Modifications ''' | |||
* [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> | |||
{{ROM Images}} | |||
}} | |||
The '''Tektronix 2221A''' is a portable, 100 MHz, 100 MS/s combination analog / digital storage scope, an update of the slower [[2221]]. | |||
Recommended cart is the [[K212]]. | |||
{{BeginSpecs}} | |||
{{Spec | Analog bandwidth | 100 MHz (80 MHz in 2 mV/Div range), 20 MHz limit switchable }} | |||
{{Spec | Rise time (analog mode) | 3.5 ns (4.4 ns in 2 mV/Div range) }} | |||
{{Spec | Sampling rate | 100 MS/s single channel, 50 MS/s 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 | Deflection | 2 mV/Div to 5 V/Div, 1-2-5 }} | |||
{{Spec | Glitch capture | > 100 ns}} | |||
{{Spec | CRT | 8 x 10 cm, P31 phosphor, 14 kV acceleration }} | |||
{{Spec | Outputs | analog X/Y plotter output, 500 mV/Div, pen lift relay contact }} | |||
{{Spec | Power | 90-250 V, 85 W, fan-cooled }} | |||
{{Spec | Weight | 8.2 kg (18 lb.) }} | |||
{{Spec | Features | | |||
* Reference waveform memory | |||
* Cursors and readout | |||
* Signal averaging | |||
* TV line and field trigger | |||
* Variable holdoff | |||
}} | |||
{{Spec | Options | | |||
* Opt.10 – GPIB (board 671-0304-00) | |||
* Opt.12 – RS232 (board 671-0303-00) | |||
}} | |||
{{EndSpecs}} | |||
==Links== | |||
* [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). | |||
{{MissingPics}} | |||
==Components== | |||
{{Parts|2221A}} | |||
[[Category:2200 series scopes]] | [[Category:2200 series scopes]] | ||
[[Category: | [[Category:Digital storage scopes]] | ||