AEV STARGATE EVO Stereo & RDS Encoder

Stargate Evo is a digital stereo encoder and RDS coder 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’s Digital Stereo Encoder ensures a transparency of sound never before reached, whilst maintaining exceptional stability.

Stargate can be installed instantly and can be matched perfectly to any transmission system without calibration.The new Stargate Evo multicoder is powered with the latest generation DSP, responds to the new operational needs of audio signal management for FM stations.

Inputs section: balanced analogue stereo input, digital AES/EBU, digital optical and also MPX and RDS signals coming from outside. Stargate Evo has a color TFT LCD display; on the home page the levels of the inputs are displayed, the input selected as Main and the MPX output level.

Input switch management. The INPUT SETUP page determines: the priority scale of the inputs, named as MAIN, SUB1 and SUB2, the exchange activation time and the exchange intervention threshold.

Stereo Coder with digital synthesis, with MPX signal level adjustment, 19 KHz pilot, digital clipper activation, input levels of any external RDS signal and internally generated RDS signal.

The Stargate Evo is also fully equipped with an RDS signal decoder; through this section it is possible to decode the data of an external RDS signal, decide which ones to keep and which to modify locally, and then regenerate the RDS data package to be supplied to the local FM transmitter. The RDS Decoder also allows the PI code contained in the external RDS signal to be monitored, if the PI code is different from the one programmed, it is possible to activate the exchange from the external MPX signal and the internally generated one.

The GPI/O port takes the status of the machine’s inputs to the outside, for a simple interface with the transmitters’s telemetry. The machine can be controlled via ethernet thanks to the internal web server, this solution frees the user from installing PC software; in addition, the Web Server can be set as CLIENT, in case of insertion in a LAN network, or as a SERVER, if you want to directly connect a PC with an Ethernet network cable.

It is possible to activate a password that limits access to the machine, inhibiting the modification of the setup parameters to unauthorized personnel.

INPUTS:
Analog audio input configuration: Electronically balanced Left & Right
Input level: -10 ÷ +10 dBu
Input Impedance: > 10 KΩ or 600 Ω dip switch selectable
Common mode reject: Greater than 50 dB (30 Hz ÷ 15 KHz)
Connectors: XLR Female, EMI suppressed

STEREO GENERATOR:
MPX Output configuration: 1 output with level control
Composite output level: 0 ÷ +12 dBu
Output Impedance: 50 Ω
Connector: BNC grounded to chassis
Pilot Frequency: 19 KHz ± 0.001% Max over temp.
Pilot injection: 4 ÷ 12 % adjustable internally
Frequency Response: (± 0.1 dB) 30 Hz ÷ 15 KHz
Stereo Separation: Greater than 64 dB 30 Hz ÷15 KHz (78 dB to 1 KHz)
Crosstalk Sub to Main: Greater than 40 dB 30 Hz ÷15 KHz (64 dB to 1 KHz)
Distortion to 1 KHz: Less than 0.005 %
Signal to noise ratio: Greater than 96 dB DIN audio.
38 KHz Subcarrier Suppression: Greater than 80 dB
76 KHz and sideband Suppression: Greater than 90 dB
Preemphasis: 50-75 μSec dip switch selectable
Pilot tone Sync IN/OUT: dip switch selectable
Connector: BNC grounded to chassis
Pilot Reference Output: 1 Vpp square wave
Impedance: 600 Ω
Pilot Reference Input: 1 Vpp sin. wave
Impedance: 10 KΩ
SCA Input: -14 ÷ +6 dBu for 10% modulation of main carrier.
SCA input Impedance: 10 KΩ
RDS Generator:
RDS signal: Standard specif. EBU Doc.Tech. 3244-E & Cenelec En 50067
Coding: Differential and Biphase
Modulation: DSB-suppressed carrier
Frequency: 57 KHz
Bandwidth: ± 2.4 KHz
RDS injection into MPX signal: – infinite ÷ – 16 dB
RDS output level: 0 dBu
Output Impedance: 100 ohm (max load 5 Kohm)
Connector: BNC grounded to chassis
Data Syncrhonization:
Terminal Interface: RS232-C at rear, asynchronous
Data Input: Full duplex
Format: Selectable
Transmission Speed: 2400 ÷ 19600 baud
Connector: 9 contact subminiature cannon female
Remote I/O: MS, TA, RDS OFF Cmos level
Connector: 25 pin subminiature cannon female
Power requirement: 87 ÷ 265 VAC 50 ÷ 60 Hz
Consumption: 8 VA
Dimension (WxHxD): 48.3 x 24 x 4.4 cm 1 rack unit
Weight: 2,5 Kg. (5.5 Lbs)
Operating Temp.: 0 ÷ 50° C
RDS Data management Microprocessor controlled 128 Kbyte
Non volatile memory RAM data retention 10 years.