ASI transmitter board

ASI-interface transmitter. Asynchronous Serial Interface (ASI) is the most commonly used interface, with a constant transfer rate of 270 Mbit/s, load impedance of 75 Ohm and coaxial cable with BNC connector. ASI interfaces are mainly applied in professional DVB equipment: modulators, demodulators, multiplexers. Multi-purpose ASI interface allows connecting different types of devices produced by various manufacturers. All types of devices allow developing a particular customer- adapted decision for DVB-signals processing and transmitting. ASI transmitter is designated for employing in professional equipment as output interface when digital audio-visual information in DVB-MPEG2 is transmitted via digital channel.

Technical characteristics	Transmitter
Transport stream format	MPEG-2 ISO/IEC 13818-1
Physical data transfer-reception rate	(270 ±0,027) Мbit/sec
Effective data rate	up to 216 Мbit/sec
Load impedance	75 Оhm
Source/receiver distance	up to 100m
Output/input interface	parallel TTL serial TTL PLD-80
Structure	105x35х18 mm
Electric parameters	EN 50083-9
Power supply	+5 V, 200 мА

We are very glad to offer our customers ASI-transmitter module to be embedded into digital satellite TV receivers. ASI-transmitter can be used in digital satellite receivers with parallel interface (SPI). ASI-transmitter provides capturing and distributing in DVB-ASI format a multiprogramming transport stream taken from DVB-CI interface or directly from DVB-S NIM (channels are not encrypted in this case). Picture shows ASI-transmitter board and connectors description, X3 connector for SPI-interface connection. Picture of a receiver embedded with ASI-transmitter module.