From TekWiki
Jump to navigation Jump to search
Tektronix 2230
100 MHz portable DSO
please add image

Produced from 1986 to 1989

Manuals – Specifications – Links – Pictures

The Tektronix 2230 is a portable 100 MHz, dual-channel combination analog / digital storage scope, sister model of 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.


     — Vertical
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
     — Horizontal
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
Bandwidth 100 MHz (analog)
Sampling rate 20 MS/s
Record length 1K or 4K samples (single channel), optional 26K
Z axis input (intensity); DC to 20 MHz, maximum safe input 30V (dc + peak ac) Input resistance about 10kΩ
CRT display area : 8 × 10 cm²
Dimensions With feet and handle: 137 x 361 x 511 mm³
  • X-Y operation
  • Pre/Post-triggering
  • Averaging
  • Dual time base
  • Cursors and readout
  • GPIB and Memory (option 10)
  • RS232-C and Memory (option 12)



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.

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).