|
|
Dual channel MPEG-2 encoder with ASI and IP outputs.
Purpose and main features.
The Encoder is a multifunctional device intended for converting 2 TV programs (analog CVBS or digital SDI format) into an integrated transport stream of MPEG2 and IP. Up to 15 encoder parameters can be set up. ASI and IP outputs operate simultaneously.
The encoder ASI outputs allows to use it in various areas: cable or on-air broadcasting, radio relay lines.
IP Output can be used to monitor the encoder work, programs passing through it, to transport a stream, as well as for IPTV.
Two channels (each one can have its IP address) are transmitted in the output IP stream.
Each of the two IP encoder channel can operate in four modes:
1. Output is disabled.
2. The output is commutated to channel 1.
3. The output is commutated to channel 2.
4. The output delivers two multiplexed channels (2 program stream).
Operating principle:
The input signal is decoded and digitized into a stream in accordance with ITU-R 656 recommendation. Then it is encoded into MPEG-2 format according to ISO / IEC 13818. These operations are carried out separately for each of 2 inputs. Similar operations are carried out for sound also. Then the signal is multiplexed into a single digital stream and transmitted over ASI interface to output, also it is converted into an IP stream and fed to the IP output.
Brief specifications:
• Input : CVBS-(PAL/SECAM),SDI.
• Number of inputs 2 (4BNC).
• Number of sound inputs 2 (4XLR).
• IP output 1 (RJ45).
• Nominal video amplitude 1B, 75ohm.
Nominal Sound amplitude 0dV (0.775V, 600Om).
• Output stream bitrate for 1 channel up to 15 Mbps (adjustable)
Compression standard ISO / IEC 13818 (MPEG-2).
• Connecting to a computer - Ethernet 100/1000Mbit.
• Up to 15 encoder parameters can be adjustable using a PC and a special program.
|
|
|
|
