Hitachi Accuvue HM-4721-D User Manual page 26

Video Timing Requirements
HORIZONTAL
Scanning Frequency
Front Porch
Sync Width
Back Porch
Blanking Time
VERTICAL
Scanning Frequency
Front Porch
Sync Width
Sync Width + Back Porch
NOTE
30 to 87kHz (HM-4787-D)
0.1 to 0.4ps
less than 15% of Horizontal Period (1 /Scanning
Frequency)
more than 1.15~s
more than 2.4~s (+l)
to 152Hz
50
to loops
5
10 to loop
400 to 7OOp at 50 to 80Hz Vertical Scanning
Frequency
400 to 5OOps at 80 to 120Hz Vertical Scanning
Frequency
400 to 45Ous at 120 to 152Hz Vertical Scanning
Frequency
Horizontal Frequency (kHz)
Fig. 4.1 Horizontal Blanking Time
E - 2 3