Sencore VP300 manual Regulate, Checker, Ansi Gray

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Regulate

Pattern Description: A single pixel white border surrounds an interior picture area which alternates between full white and full black.

Pattern Usage: Checks the regulation of CRT high-voltage and deflection power supply circuits. The pattern alternately produces maximum and minimum CRT beam current. Ideally, these current extremes should not cause the picture size to change. This can be judged by placing a thumbnail next to one of the border lines to see the amount of displacement (avoids optical effects from the alternating pattern). A one to two pixel shift is not noticeable in most picture material to a typical viewer.

Checker

Pattern Description: Alternating picture areas of black and white in a checkerboard pattern.

Pattern Usage: Checks the regulation of CRT video drive power supply circuits. The pattern produces abrupt, maximum changes in CRT video drive current. Ideally, this should not cause the voltage supplied to the video drive circuits to change (good voltage regulation). If the power supply does not have good regulation, it will cause softening or ringing of the vertical line pattern transitions.

ANSI Gray

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Contents VP300 Sencore Drive, Sioux Falls, SDTable of Contents Specifications Battery Types Used AC Power SupplyBattery Installation Low Battery IndicationMaking Connections LCD Window Front Panel Controls and IndicatorsControls Signal Type, Format, and Pattern Menus Signal Type MenuFormat Menu Pattern MenuSmpte Bar Pattern Description and UsagePluge Needle Staircase Horizontal Staircase H StairCrosshatch OverscanAnamorphic Window1, Window2 RasterColor Bar Split BarFocus RampChecker RegulateAnsi Gray Multiburst Gating Menu Gating and Test MenusTest Menu Sequence Sub-Menu Sequence and Burn-In Sub-MenusBurn-in Sub-Menu Freq Shift, Audio, and DDC Step Sub-Menus Freq Shift Sub-MenuAudio Sub-Menu DDC Step Sub-MenuColor Pro Sub-Menu ColorPro Sub-MenuLearn Formats Function and Options Menu Learn Formats FunctionDetails Options MenuAppendix a Calibrating TV User Controls Brightness Control3.5 IRE 10 IRESharpness Control Contrast Control Color And Tint Controls Color ControlPage Page Appendix B Video Display White Balance Adjustment White Balance AdjustmentFinal User Control Adjustment VP300 100 IRE Window patternSioux Falls, SD Sencore DriveCall 1-800-SENCORE
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