Input Channels; Low-Pass Filter; Video Decoder - Matrox 4Sight User Manual

114 Chapter 10: Matrox Meteor-II for Matrox 4Sight
Performance
Field rate (Hz)
Pixel/line (Pixels)
Active pixel/line (Pixels)
Active lines/frame (Lines)
Pixel rate (MHz)
ADC sampling rate (MHz)
Line rate (KHz)
The video timing parameters supported by the Matrox
Meteor-II /Standard board are as follows:
CCIR 601 sampling
rates
NTSC
60
858
720
480
13.5
27
15.750

Input channels

Matrox Meteor-II /Standard for PC/104-Plus can switch
between up to twelve independent composite or six Y/C video
sources.
You can only acquire data from one video source at a time. You
can use the MIL-Lite MdigChannel() command to switch
between video sources (or channels).

Low-pass filter

The input low-pass filtering stage is used to limit high
frequency noise and aliasing effects at the input of the decoder.
The filter used on Matrox Meteor-II /Standard for PC/104-Plus
is a single-order filter with a cutoff frequency of 6 MHz.

Video decoder

A multi-standard video decoder is used to convert analog
monochrome video in RS-170/CCIR format, or composite
(CVBS) or component (Y/C) video in NTSC/PAL format to
digitized video. The decoder supports RGB 8:8:8 (24-bit),
RGB 5:6:5, YUV 4:2:2, and YUV 4:1:1 output pixel formats.
Note that YUV 4:2:2 output pixel formats are grabbed as YUYV.
Square pixel sampling
PAL NTSC
50 60
864 780
720 640
580 480
13.5 12.27
27 24.54
15.625 15.750
rates
PAL
50
944
768
580
14.75
29.50
15.625