2230

Manuals – Specifications – Links – Pictures

The Tektronix 2230 is a portable 100 MHz, dual-channel combination analog / digital storage scope, introduced in 1986. It was superseded by the 2232 in 1990. Sister models include the 2220 and 2221.

It has both an analog mode and a digital mode. In the digital storage mode, up to three waveform sets (CH 1 and/or CH 2) may be stored in a save ref. memory and recalled for display at a later time.

The 2230 features alphanumeric CRT readout of many of the front panel controls. A DB-9 auxiliary connector on the right side provides an external clock input as well as an analog X-Y plotter output to make permanent copies of the display. This feature can be accessed through the "Mem select" menu.

Some firmware versions have a diagnostics menu with the Tektronix logo and wizard image.

The Cursor knob is prone to failure. It becomes jittery and will not scroll properly.

Options include RS-232 and GPIB interface boards, which include a 32K (26K available) battery backed memory daughter board (the same options for the 2220 and 2221 do not include the memory).

Recommended cart is the K212.

Key Specifications

Bandwidth	100 MHz (analog)
Sampling rate	20 MS/s
Record length	1K or 4K samples (single channel), optional 26K
Deflection	2 mV/div to 5 V/div, 1−2−5
Resolution	8 bits
Input impedance	1 MΩ // 20 pF
Maximum Safe Input Voltage	400 V (DC + peak AC) or 800 Vp-p AC
CMRR	At least 10:1 at 10 MHz
Timebase A	50 ns/Div to 0.5 s/Div, 1-2-5, x10 magnifier, i.e. down to 5 ns/Div. In "Store" mode lower sweep speeds up to 5 s/Div are available
Timebase B	50 ns/Div to 5 s/Div, 1-2-5, x10 magnifier, i.e. down to 5 ns/Div
Z axis	input (intensity); DC to 20 MHz, maximum safe input 30 V (DC + peak AC) Input resistance about 10 kΩ
CRT	154-0861-00; display area : 8 × 10 cm²
Dimensions	With feet and handle: 137 x 361 x 511 mm³
Features	X-Y operation Pre/Post-triggering Averaging Dual time base Cursors and readout
Options	Opt.10 – GPIB and memory (board 670-8900-00); 156-2012-00 2k×8 RAM; 160-2998-xx 64k×8 EPROM (27128) Opt.12 – RS-232 interface and memory (board 670-8899-00)

Links

• Tektronix 2230 Family Marketing Presentation @ YouTube courtesy of the Vintage Tek Museum
• Troubleshooting tips on 2200 PSU
• Measuring inductance using a 2230
• Replacing RIFA capacitors in the 2230

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 Sony CX20052A (8 bit, 20 MHz, ECL output). A pair of MCM2016H 2K×8, 70 ns RAMs serve as acquisition memory.

Pictures

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  standard interface board (X-Y)

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  2230 GPIB interface board

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  During repairs

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  uppermost board (A10, CPU and acquisition)

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  CPU/acquisition board in service position

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  Supplied Menu Reference Guide for 2230