The LCG-396 is a NTSC-M pattern generator designed to produce standard 75% color bars as well as other test signals for use in alignment and troubleshooting of video monitors and feceivers, and video tape recorders. Features 1. Standard split-field color bars with fully saturated 75% bars in the upper half, I, Q and 100% white bars in the lower half. This signal facilitates simultaneous checks of luminance and chrominance values. Waveforms given for the video processing circuits in most VTR service manuals are given for the standard color-bar signal. 2. Standard sync and blanking intervals, as well as standard equalizing pulses and serrations permit accurate adjustments of picture size and VTR servo alignment. 3. Provision for front-panel alterations to setup, luminance and chrominance levels. 4. Provides standard video levels into a 75 ohm load. 5. Saturated primary-color rasters and white raster for purity checks without gun killers or altering CRT bias. 6. Dots, crosshatch and single-cross displays for size, linearity and convergence adjustments. 7. Scope trigger at both H and V rates to simplify scope triggering. 8. RF output on channels 5 or 6. 9. Selection of normal interlace or progressive interlace. The latter minimizes flicker in the horizontal lines of the convergence patterns. 10. All signals synthesized in digital form and converted to a standard form by D/A converters.