Grass Valley LDK 7500 User Guide - Manual (Page 12)

1-4 FilmStream mode Viper
Technology
CCD sensor technology
The Viper FilmStream Camera uses three unique 9.2 Megapixel HD-
DPM+ CCD sensors that allow the camera to work in several formats;
1080 lines at 24/25/30 frames per second or 720 lines at 24/25/30/50/
60 frames per second.
This CCD sensor is based on the Frame-Transfer principle which is best
suited for progressive images. The Viper uses a mechanical shutter
which means that the CCD exposure has a similar ramp to film cameras,
thus providing similar motion characteristics.
Formats
The following formats can be selected in the Install menu:
1080psf at 23.98Hz
1080psf at 24Hz
1080psf at 25Hz
1080psf at 29.97Hz
1080i at 50Hz
1080i at 59.94Hz
1080i at 59.94Hz - 23
720p at 23.98Hz
720p at 25Hz
720p at 29.97Hz
720p at 50Hz
720p at 59.94Hz
The sensor consists of 1920 horizontal pixels and 4320 vertical sub-
pixels. By grouping the vertical sub-pixels, the vertical line count can
be set. Full resolution is preserved and the horizontal viewing angle
stays the same.
• 1080P
When four vertical sub-pixels are combined, the total line count
becomes 1080 lines. So, a 1920 x 1080 image sensor is obtained with
a 16:9 aspect ratio.