Fluke 54200, Руководство пользователя

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54200
Users Manual
4-66
ADC Check 2
ADC Check 2 is a combined B/W and color pattern with 15 horizontal bars on a black
background. The color contents are matched to 625 or 525 line systems.
•
Background: Black
•
Bar 1, 4, 7, 10, 13: Luminance ramp
•
Bar 2, 5, 8, 11, 14:
625 Line Systems 525 Line Systems
V ramp, U = 0, I ramp, Q = 0,
R - Y = -0.887 to +0.887, I = -0.734 to +0.734
Y = 50% Y = 53.8%
Note: Color Green exceeds the nominal range
•
Bar 3, 6, 9, 12, 15:
625 Line Systems 525 Line Systems
U ramp, V = 0, Q ramp, I = 0
B - Y = -0.701 to +0.701, Q = -0.520 to +0.520
Y = 50% Y = 53.8%
Note: Color Green exceeds the nominal range
Figure 4-99. ADC Check 2
Applications:
This test pattern is used to check the correct converting of luminance and chrominance
signals in the AD converters in modern TV equipment.