2221

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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.

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
  • GPIB or RS232 optional

Links

Internals

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

Custom ICs used in the 2221

Page Class Manufacturer Model Part nos Description Designers Used in
155-0022-00 Monolithic integrated circuit Tektronix M036 155-0022-00 155-0022-01 analog multiplexer Gene Andrews 147 148 149 335 468 1430 1441 1461 1900 1910 2220 2221 2230 5223 5403 5440 5441 5443 5444 5A38 7313 7403 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 7B52 7B53N 7D10 7D11 7D12 NT-7000 P7001
155-0273-00 Monolithic integrated circuit Tektronix M084 155-0274-00 broadband vertical amplifier John Addis 2220 2221 2230
155-0274-00 Monolithic integrated circuit Tektronix M084 155-0274-00 broadband vertical amplifier John Addis 2220 2221 2230