Digital TV station
Digital cable TV station is gathered from digital transducers CON, presented in 1U frame.
Offered digital transducers - CON (converter) are devided into 100, 200, 300, 400, 500 series (if required configuration of digital cable TV station is not in the pointed series, you can speak to enterprise and we will improve CON according to your task. As a rule it leads to engineering changes because developed set of digital boards requires only their reprogramming).
Series 100 - it converts input signal into output digital stream (ASI and IPTV) without additional conversion of output stream into RF,
it means without modulation.
If input signal is analog, for example, video or audio, it is added to series abbreviation A/D; if input signal is digital, for example, ASI, IPTV, it is added abbreviation D/D).
The exceptiopn is CON-100 D/A. Here according to abbreviation input signal is digital (ASI, IPTV) and output signal is analog (Video, Audio).
Series 200 - it converts input signal into output digital stream with additional its conversion into RF signal with QPSK or 8PSK modulation.
Series 300 - it converts input signal into output digital stream with additional its conversion into RF signal with COFDM modulation
(T or Т2 standard).
Series 400 - it converts input signal into output digital stream with additional its conversion into RF signal wit QAM modulation
Series 500 - it converts input digital signal into RF signal with amplitude single-band modulation (8 channels).
The exceptiopn is CON-400 D/A. Here according to abbreviation input signal is digital (ASI) and output signal is only analog. Because it is 400 series the output signal it is the signal with QAM-modulation.
As a rule all series have ASI input or ASI output, and accordingly they have IPTV input or IPTV output (1000BaseT; meanwhile IPTV output "duplicate" ASI output). Where it is necessary ASI interface makes possible to transmit transport stream up to 216 Mbps. Control of digital converters is fulfilled via TCP/IP protocol - 100 Mbps with the help of program "DVB Manager". All converters are in 1U frame.
Example: CON-200 A/D (200 - there is QPSK or 8PSK modulator; A/D - digital transducer from analog video or audio signals into digital ASI and IPTV stream).
Type functions are supported by respective CON sereies: indication of current bitrate, range of MPEG-2 (Mbps) coding speed changes, changes of modulation settings, including possibility of symbole speeds changes, of output layer, of modulator's frequency, etc.