STEREO ENCODER - AEV

 The  digital stereo encoder board for broadcast applications that has been designed using highly innovative technology.

The result is the most advanced that a stereo broadcasting system can offer, with an exceptional array of features.

Besides guaranteeing excellent stereo separation between channels, AEV Digital Stereo Encoder ensure a transparency of sound never before reached, whilst maintaining exceptional stability.
The AEV Stereo board can be installed into your FM equipment and can be matched perfectly to any transmission system without calibration.

STEREO CODER
It employs a digital modulator at a sampling rate of 32x that generates frequencies at 19 and 38 KHz for respectively the pilot and subcarrier. 

The employment of a great quantity of "samples" offers a better spectrum clarity and mantains the MPX signal constant. The stereo separation levels are constantly over 65 dB.

COMPOSITE PROCESSOR
In order to limit the overshoots, Stargate uses "DSP-Filtering" system composed with a couple of digital lowpass filters, an exclusive AEV"hybrid", that allows not only a phase linear design, but also dynamically flat responses together with 115 dB/oct slope.

The qualities of this system grant perfect spectrum clarity up to 15 KHz.
At the modulator output another "Safety Clipping" stage removes the remaining overshoots produced by the
filters.


CHARACTERISTICS AND FEATURES

- Audio Input Left & Right balanced XLR connectors
- Digital Audio Input AES/EBU DB9 connector
- Remote Control I/O Logic DB25 connector
- Serial Interface RS232
- Digital generation of 19 Khz pilot
- Very high pilot stability
- Maximum stereo separation
- Audio distortion non-quantifiable
- Electronically balanced audio inputs
- SCA and RDS signal ouputs
- Selectable preemphasis 50 - 75 m S
- 19 Khz pilot synchronization