NEC MultiSync XP29, XM29 Xtra User Manual page 36

Composite Sync. & Video (Sync. on Green)
HORIZONTAL
VERTICAL
Recommended Sync Signal Timing
Horizontal Duty should be 3 to 30%.
Horizontal sync width should exceed 0.9 sec.
Horizontal back porch should exceed 2.0 sec at sync on green and 1.2 sec at others except when at 15KHz.
Horizontal blanking should exceed: 15.75; 10 sec, 31KHz< fH<63.2KHz: 3.6 sec, 63.2KHz<fH: 2.7 sec.
Vertical Duty should be 0.2 to 10%.
Vertical sync width should exceed 40 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.
VIDEO
B D
C
A
P Q
P
E
VIDEO
R S
O
Sync. Polarity: Negative
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