The Model SSC/624 Stroke-to-Raster Scan Converter converts stroke video from XYZ vector to a standard raster video format. Stroke video is generated by a variety of random deflection devices, including certain radar and sonar devices, spectrum analyzers, and Heads Up Display (HUD) generators. Two video outputs standards are provided via strapping option: RS-170 or PAL. After conversion, the video can be recorded using standard TV cassette recorders and viewed using low cost, off-the-shelf monitors.

High quality video is generated by a combination of high frequency sampling and an advanced scaling algorithm. Scaling is an important consideration when converting computer-generated graphics or alpha numerics. Scaling on the SSC/220 is done using multitap FIR filtering and advanced horizontal and vertical interpolation to generate an 8-bit (256 level), high-resolution video signal. A selection of six different decay rates provides for emulation of a wide variety of stroke monitors.

The SSC/624 can accept signals in a stroke format, raster format, or a mixed stroke and raster format. Some stroke-generating devices have the ability to change the output signal between stroke and raster format in order to accommodate special display information. The SSC/624 can be adjusted to ensure that both the stroke and raster data appear in their proper location and intensities in the same output video signal.

An internal gen-lock capability, which locks the (output) converted signal to either another video or composite sync signal, provides a common time base with an external video system.