NEC R 37 Xtra - Manual (Page 33)

33
Composite Sync. & Video (Sync. on Green)
56
55
A
B C D E
VIDEO
O
P Q R S P
VIDEO
Sync. Polarity: Negative
HORIZONTAL
VERTICAL
Recommended Sync Signal Timing
Horizontal sync duty should be 3 to 30%.
Horizontal sync width should exceed 0.9 µ sec.
Horizontal back porch should exceed 2.0 µ sec at sync on green and 1.2 µ sec at others except when at 15KHz.
Horizontal blanking should exceed: 7.0 µ se at fH 15.75kHz, 3.3 µ sec at 30 kHz µ usec at 51kHz
and 2.7 µ sec at 81kHz
Vertical sync duty should be 0.2 to 10%.
Vertical sync width should exceed 40 µ sec or 2 horizontal lines.
Vertical sync width plus back porch should exceed 0.4 msec.
Interlaced signals are not recommended.
Interlaced signals with composite sync may not be displayed.