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SGPF digitally generates a PAL composite colour video signal (CCVS) coded over the eight-field sequence with a resolution of 12 bits. Two LSI gate arrays convert the Y, CB and CR components into the digital CCVS which features an accurately defined colour-subcarrier/sync-pulse (SC/H) phase. For identification of the beginning of the eight-field sequence, the PAL identification pulse can be inserted into line 7 of the first field. With the genlock option fitted, SGPF offers the possibility of inserting test signals into a program signal. If no program signal is available, the selected video test pattern is through-connected to the program output. The test signals numbering more than 30 comprise the following groups: Test pattern to German FuBK standard or general-purpose test pattern with optional source identification, crosshatch pattern and VTR signal CCIR insertion test signals Squarewave signals (50 Hz, 15 kHz, 250 kHz) Sawtooth signals Multipulse, H sweep, sin x/x and coring signals Black burst, vertical staircase, white field and bounce signals
