The Tektronix 2230 is a portable 100 MHz, dual-channel combination analog / digital storage scope, introduced in 1986.
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 roll mode (chart recorder-like display) is available from 0.1 to 5 s/div.
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.