MIRAGE DIG EVO
FM Broadcast Audio Processor

Digital audio processor

The Mirage Dig Evolution processor is a fully digital audio processor, based on DSP technology. Mirage Dig Evo is a complete audio signal processing processor for AM, FM and TV broadcasts.

• Digital audio inputs / outputs l AES / EBU and Optics
• Balanced analog audio inputs / outputs
• AES / EBU standard, 24 bit resolution
• Low structural signal latency (3 ms)
• Audio processing and compression on four bands
• Input switching with selectable backup function
• Logic for controlling and monitoring the input signal with automatic switching actuator
• Monitor headphone output
• AGC control on 4 bands
• 8 equalization bands
• Audio process structure on DSP devices
• Stereo MPX digital coder
• Remote control software
• Remote control connection via Ethernet

Technical features

GENERAL PERFORMANCE
Frequency response	20Hz ÷ 20 KHz HD version; 20Hz ÷ 15 KHz FM version; 20Hz ÷ 10 KHz AM version
Stop band rejection	> 78 dB beyond 17 KHz
Noise	> 65 dB in all conditions  (depends on the processing)
Total distortion	< 0,01 %
Total system separation	> 67 dB (30 Hz – 15 kHz)

ANALOG AUDIO INPUT
Configuration	Left and Right
Impedance	10 K ohm / 600 ohm balanced
CMRR	> 45 dB from 30 to 15 Khz
A/D Conversion	192 kHz sample rate
Sensitivity	±12dBu
Maximum input level	+15 dBu
Connector	XLR-type, female
	Pin 1 Chassis Pin 2 & 3 electronically balanced, floating and symmetrical

DIGITAL INPUT
Digital input configuration	AES 3 professional (IEC-60958)
Digital AES 3 Input Impedance	110 ohm Balanced
Digital AES 3 Input Connector	XLR Female
Sample Rate Automatic lock	32 – 44.1 – 48 – 96 KHz
Resolution	24 Bit

ANALOG AUDIO OUTPUT
Configuration	Left and Right. Flat or pre-emphasized (50μS – 75μS)
Impedance	30 ohm electronically balanced and floating
Minimum load impedance	600 ohm
Maximum output level	+15 dBu into 600 ohm load
Connector	XLR-type, male
	Pin 1 Chassis
	Pin 2 and 3 electronically balanced, floating and symmetrical

DIGITAL OUTPUT
Digital Output Sample Rate	Software Selectable 32 – 44.1 – 48 – 96 KHz
Resolution	24 Bit
Digital Output configuration	stereo AES 3 Transformer Balanced (IEC-60958)
Digital Output Impedance	110 ohm Balanced
Digital Output Level	– 12.00 / 0 dBFS adjustable
Digital Output Connector	XLR Male

STEREO GENERATOR (version MPX only)
Configuration	one output
Pilot freq.	19 KHz ± 0.001% Max over temp.
Pilot injection	+4 ÷ 12 %
Distortion	< 0.005 % @1 kHz
Noise signal ratio	70 dB (Din Audio,Bypass mode) Typical
Stereo separation	60 dB Typical
Crosstalk Main to Sub	Great 48 dB 30-15 kHz
Crosstalk Sub to Main	Great 46 dB 30-15 kHz
38 kHz subcarrier suppression	70 dB Typical
76 kHz suppression	70 dB Typical
Composite audio level	0 ÷ 12dB
Connector	BNC
Output impedance	50 ohm

DATA
Terminal Interface	Ethernet / RS232- at rear, asynchronous
Data Input	Full duplex
Format	Selectable
Serial Transmission Speed	2400 ÷ 19600 baud
Connector	RJ45 / RS232/ USB
Data management	Microprocessor controlled
	Non volatile memory Flash data retention 10 years
Logic I/O
Connector	DB15 cannon female

GENERAL
Mains Voltage	90 – 260 Vac / 50 Hz full range
Dimension	(WxHxD) 48,3 x 19,4 x 4,4 cm 1 rack unit
Weight	3,5 Kg.
Operating Temp.	0 ÷ 50° C.
Operating Humidity	Max 95% non condensing