AEV MIRAGE MK III Manual Download Page 3

     

MIRAGE MK III - Broadcast Audio Processor

 

AEV Broadcast Srl  via della Tecnica 33, 40050 Argelato  Bologna ITALY 

 

www.aev.eu

           [email protected] 

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• Abuse or misuse of the equipment is 

extremely dangerous 

for people, pets and property. The manufacturer 

declines all responsibility for damage and injury resulting from 

improper use 

and 

mishandling

• Certain basic safety rules must be observed when using electrical equipment, in particular: 
- Never touch the equipment with wet and/or damp hands or other parts of the body. 
- Keep the equipment away from drops of water or sprinkling systems. 
- Never use the equipment near high heat sources or explosive material. 
- Do not introduce any extraneous matter into the equipment. 
- Do not allow children or untrained people to use the equipment. 
• Before cleaning or servicing the equipment outside, disconnect it from the supply and wait at least 2 seconds before 
working on it, as recommended by current safety regulations. 
• In the event of faults and/or improper operation, turn off the equipment, shut off the electrical power and call your 
dealer. covers/guards or circuit boards are to be removed. 
• Blown fuses inside the power supply indicate that there may be a fault in the power supply itself. The fuses must be 
replaced by qualified and authorised persons. It is advisable to call your nearest dealer. 
• Call your dealer for any repairs and be certain original spare parts are used. 

Failure to observe this rule may 

adversely affect the safety level of your equipment

• The equipment is to be connected to the mains supply and provided with adequate and efficient earth conductors. 
• The electrical wiring must be done in compliance with current electrical codes CEI 64-8 “Electrical specification for 
domestic buildings”. 
• When installing, leave a clearance of at least 1 cm around the equipment to allow air to pass freely. 
 
 

NOTE. This piece of equipment has been manufactured to the highest standards of workmanship. It must 
be used properly and serviced as recommended to ensure long-term dependable operation. 

The installation must be done in order to be able to guarantee an easy access to the cable of feeding. 
The device of dissection of the equipment is the cable of feeding, so it must be unconnected from the equipment every 
time it is  ecessary to do any type of maintenance. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 

Contents 

 

Guarantee ....................................................... 2 
 
Technical Support ................................................2 
 
Factory Service and Repairs ..................................... 2 
 
Shipping Instruction .............................................2 
 
Safety precautions........... ................................... 2 
 
Contents .........................................................3 
 
Introduction - General Description .............................. 5 
 
Total control of peak modulation ................................ 5 
 
Concepts of audio processing .................................... 5 
 
Initial power-up ................................................ 5 
 
Command description ............................................. 6 
 
Front Panel ..................................................... 6 

Summary of Contents for MIRAGE MK III

Page 1: ...MIRAGE MK III Broadcast Audio Processor AEV Broadcast Srl via della Tecnica 33 40050 Argelato Bologna ITALY www aev eu info aev eu 1 AEV MIRAGE Broadcast Audio Processor 3 band ...

Page 2: ...al package call us for a new one If you ship the equipment in a different packing container take care to provide a double package by interposing padding material between the two containers in order to fully protect the equipment during shipment The package should be marked FRAGILE in red SAFETY PRECAUTIONS IMPORTANT Carefully read this paragraph as it contains important instructions concerning ope...

Page 3: ... the power supply itself The fuses must be replaced by qualified and authorised persons It is advisable to call your nearest dealer Call your dealer for any repairs and be certain original spare parts are used Failure to observe this rule may adversely affect the safety level of your equipment The equipment is to be connected to the mains supply and provided with adequate and efficient earth condu...

Page 4: ...reshold 8 Input Level 8 Output Level 8 Pre Emphasis and De Emphasis 8 Encoder Adjastement 8 Configuration and in out connections 9 Configurations 9 Connections 9 Inputs Outputs 9 Encoder board inputs outputs 9 Positioning the MIRAGE 9 Optimum control of the level of peak modulation 9 Best location for MIRAGE 10 Technical Specification 10 AUDIO INPUT 10 AUDIO OUTPUT 10 GENERAL DATA 11 Example of ba...

Page 5: ...tude and phase are adjustable to ensure the best adaptation to any transmission system and the highest level of stereo separation MIRAGE helps prevent distortion arising in successive encoders and other transmission components through the use of bandwidth limiting filters 10 KHz low pass filters following the overmodulation compensation circuits Concepts of audio processing It is possible to defin...

Page 6: ...or channels output 11 Led indicator power On Off Rear Panel 1 MAIN line input socket and power On Off switch 2 PILOT SYNC OUT 19 KHz output signal for synchronization of external systems 3 SCA signal level trimmer 4 SCA signal input 5 RDS signal level trimmer 6 RDS signal input 7 Trimmer for control of pilote phase 8 MPX composite signal output level trimmer 9 MPX composite signal output 10 Left c...

Page 7: ...he sound more brilliant Density This control determines the amount of expansion applied to the signal before compression upto a maximum of 10 dB It is active over the entire audio spectrum With the control set at 0 no change to the sound takes place at 10 dB the dynamic range is reduced making the output sound more aggressive It is recommended that this control is used in moderation since a large ...

Page 8: ...asis and deemphasis is selectable with Dip switch located in the rear panel De emphasis need only be selected in those states that have a legal requirement for de emphasis at the transmitter ENCODER adjustment ONLY FOR MIRAGE FM MPX Pilot Level This is the pilot signal level control which adjusts the level relative to the amplitude of the MPX output signal It can be adjusted via a trimmer Attentio...

Page 9: ...ignal Also present are two inputs that can accept SCA and RDS signals which can be adjusted with trimmers and are added to the MPX output signal Furthermore an output provide synchronization to an external systems SYNC 19 KHz OUT 1 Vpp SW for the synchronizing of external encoders Positioning the MIRAGE The audio processing circuits of the MIRAGE produce a signal that is pre emphasized with curves...

Page 10: ...15 KHz 0 3 dB By pass AGC Control 10 dB Stop Band Rejection 90 dB above 75 KHz Noise Output noise depends by processing parameters AGC threshold gain and density Greater than 84 dB Din Audio By pass Total distortion 1 KHz Than less 0 05 Crosstalk L R R L Greater than 60 dB Din Audio 90 dB 3 KHz AUDIO INPUT Configuration Left and Right Impedance 10 KΩ electronically balanced Input level 20 10 dBm C...

Page 11: ...sis RDS level 24 0 dBm for 2 KHz of main carrier Input impedance 10 K Ω Connector BNC floating over chassis GENERAL DATA Power supply 87 265 VAC 50 60 Hz Power consumption 8 VA Dimensions 19 x 9 4 x 1 7 48 3 x 24 0 x 4 4 cm 1 rack unit Weight 8 4 Lbs 3 8 Kg Operating temperature 0 50 C Pin OUT I O audio interface 1 Right return output 2 Right inphase output 3 GND 4 Left return output 5 Left inphas...

Page 12: ...GE MK III Broadcast Audio Processor AEV Broadcast Srl via della Tecnica 33 40050 Argelato Bologna ITALY www aev eu info aev eu 12 Example of balanced connection Example of unbalanced connect ion DIP SWITCH ...

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