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The B&K Precision 1257 Portable NTSC Generator can generate crosshatch, dots, staircase, circle, center cross, windows, NTSC color bars and a full range of raster patterns.
This handheld NTSC Pattern Generator is powered by a 9 volt battery or AC adapter. The outputs available are composite video via RCA connector, a Audio output RCA connector, or an S Video mini DIN output. Signals can be produced as an interlaced or progressive scanning mode. Note: the Composite Video output is not modulated.