SRS Software Radio System

Elber developed a new topology of systems in order to process and transport audio signals with digital techniques. Based on Software Radio Technologies, this new equipment are grouped under the name of SRS systems.
Many different audio signals are accepted as input: 87.5 - 108 MHz FM Channel, Baseband 0 - 30 MHz (eg: audio subcarrier of an analogue microwave TV link), stereo multiplex FM and 10.7/21.4 MHz IF of an FM exciter. Other inputs signals can be processed on customers' request.
Every topology of input can be converted in a DVB-ASI stream in order to be transported (eg.: together with DVB-T/H bouquets) over a TV microwave digital link.
In this way, the audio signal isn't affected by thermal noise or channel distortions, until the RF field is above threshold.
Thanks to the digital processing, performed both with latest DSP and FPGA, SRS equipment get optimum signal to noise ratio and a very low cross-talk distortion.
A very useful solution is to convert an audio carrier to the FM band 87.5-108 MHz, to provide directly the input of an FM exciter (SRS/BB/CH).
Other inputs can be the FM stereo Multiplex or the proprietary ASI audio stream.
Many hybrid versions are available, accepting the same inputs and generating different outputs. The I/O table shows all the possible combinations for a 1U rack solution.
Programming and monitoring of the main parameters can be done both through the local user interface (keypad and display on the front panel), and remotely (RS232/RS485 or Ethernet).