NEC R 37 Xtra User Manual

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<fH<50kHz, 2.9

µ

usec at 51kHz<fH<80kHz,

and 2.7

µ

sec at 81kHz<fH<95kHz

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.