Crystal Vision
Introduction
DEC104S User Manual R1.0
3
29/10/04
1 Introduction
The DEC104S is an analogue composite or Y/C to serial digital video decoder. It contains
a 10 bit synchroniser allowing the serial digital output to be timed to an analogue
reference.
Two main operating modes are supported, 10 bit for professional quality PAL or NTSC
video and 8 bit for less stable PAL or NTSC video, as is often the case with VHS or
satellite feeds.
The decoder is fitted with a 3 line adaptive comb decoder and Crystal Vision’s own
bandsplit decoder which gives excellent decoding without the artefacts of a comb. This is
recommended when using broadcast PAL material. It is also designed to accommodate
jittery or damaged signals and will automatically switch to its tolerant 8 bit decoder mode
when a non-stable signal is received.
The main features are as follows:
•
compact single height module
•
converts composite or Y/C signals to SDI
•
frame synchroniser
•
10 bit adaptive comb and PAL bandsplit filtering plus 8 bit input modes
•
automatic or manual PAL/NTSC standard selection
•
adjustable timing, gain and black level
•
audio follow pulse for audio to video delay tracking
•
GPI outputs for 8 bit lock, ref present, std & audio follow pulse
•
loop or terminate external analogue video reference input
•
card edge, Statesman and remote control facilities
SDI
output
x 4
The DEC104S analogue composite or Y/C to serial digital video decoder
