RFX-RMT-II SD/HD
LAST REV: DEC 2007
15
Operator’s Manual
RF ExtremeCare: 866.732.0113
7 CIRCUIT DESCRIPTIONS
RFX-RMT-II Simplified block diagram
7.1 Audio / Video Encoder
The Encoder board consists of the following main functions :
•
SDI to Digital de-serializer. Converts the SMPTE-259M-C serial digital video
input to an 8 bit parallel digital video bus.
•
Analog to Digital Video Converter, 10 bit over sampling ADC
Takes either Composite Video (75
Ω
, 1v p-p) (CVBS); YC or YUV inputs in
either PAL / NTSC format and converts to an 8 bit parallel digital video bus.
•
FPGA selects the required 8 bit parallel digital video bus from either the SDI or
analogue input, packets this data for input to the MPEG2 encoder. A relay is
used to route the input from the BNC (either SDI or CVBS) to either the SDI de-
serializer or the PAL/NTSC decoder.
