Promax GV-998 Manual De Instrucciones página 58

Chrominance
PAL/NTSC
TV systems
Subcarrier frequency
Tolerance
SECAM
TV systems
Subcarrier frequency
Identification pulses
Frame
Amplitude D'R
Amplitude D'B
Line
Amplitude D'R
Amplitude D'B
Subcarrier blanking
Pattern charts
Chart nº 1
Complete chart, 4:3 format
Signals outside the circle
• Cross-hatch
18 vertical lines x 14 horizontal lines.
Background at 48 % of the white level
• Constellations on the edges in white and black
Colour signals from left to right:
• Vertical bar of R-Y not alternated (90°/90°) and B-Y = 0 (Anti-PAL)
• 2 vertical bars with R-Y signals (270° and 90°) and B-Y = 0
• 2 rectangles with the signal G-Y=0 (326° and 146°)
• 2 rectangles with the signal G-Y=0 (326° and 146°)
• 2 vertical bars with signals of B-Y (180° and 0°) and R-Y=0
• Vertical bar of B-Y alternated (0°/180°) y R-Y=0 (Anti-PAL)
Signals inside the circle
• Black rectangle over white background
Rectangle width 11.4 µs.
• Black to white transition and from white to black with a black vertical line on
the white side.
• Square signal of 250 kHz. White level amplitude is 75%
Page 4
Colour pattern generator GV-998
PAL B/G/D/K/I/M/N, NTSC M
4.433619 MHz PAL B/G/D/K/I
3.579545 MHz NTSC M
3.575611 MHz PAL M
3.582056 MHz PAL N
< 4 ppm from 0 to 70°
B/G/L/D/K
F R = 4.406250 MHz
0
F B = 4.250000 MHz
0
540 mV
500 mV
215 mV
167 mV
5.6 µs
12/2004