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2221: Difference between revisions
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|manuals= | |manuals= | ||
* [[Media:070-6531-00.pdf|Tektronix 2221 Service Manual]] | * [[Media:070-6531-00.pdf|Tektronix 2221 Service Manual]] | ||
* [[Media:070-6530-00.pdf|Tektronix 2221 Operators Manual]] (OCR) | * [[Media:070-6530-00.pdf|Tektronix 2221 Operators Manual]] (OCR) | ||
<small> | <small> | ||
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}} | }} | ||
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]]. | 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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==Internals== | ==Internals== | ||
The | 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. | 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. | ||
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==Components== | ==Components== | ||
{{Parts|2221}} | {{Parts|2221}} | ||
[[Category:2200 series scopes]] | [[Category:2200 series scopes]] | ||
[[Category:Digital storage scopes]] | [[Category:Digital storage scopes]] | ||