Matrox Corona Installation And Hardware Reference page 52

52 Chapter 6: Matrox Corona hardware reference
Low pass filter
Gain
Triple A/D converter
The input low-pass filtering stage is used to limit high
frequency noise and aliasing effects at the input of the A/D
converter. The filter used on Matrox Corona is a 4th order
Butterworth filter with a cutoff frequency of 10 MHz.
The RGB digitization section has selectable gains that affect all
three RGB signals. This allows you to optimize the range of
video input signals. You can change the gain using the MIL-Lite
MdigControl() command.
The supported gain factors are as follows:
Input video
signal
amplitude
(excluding
sync)
0.0 V up to 0.5 V
0.5 V up to 0.7 V
0.7 V up to 1.0 V
1.0 V up to 2.0 V
A triple A/D converter with external reference generation and
sync slicing is used for component RGB digitization. The
converter can be operated at up to 30 MSPS. In addition, the
converter's black and white reference levels can be adjusted
individually.
The black and white reference levels can be adjusted between
0.6 V to 1.6 V and 1.6 V to 2.6 V respectively, in increments of
10.23 mV (98 distinct adjustments). Use the MIL-Lite
MdigReference() command to set the black and white reference
levels.
Total input Required
video gain setting
signal
amplitude
(including
sync)
0.0 - 0.7 Vpp 4
0.7 - 1.0 Vpp 2.8 (Default)
1.0 - 1.4 Vpp 2
1.4 - 2.8 Vpp 1
MIL
M_GAIN3
M_GAIN2
M_GAIN1
M_GAIN0