AEQ FORUM
Digital audio mixer for broadcast applications
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2.2.2.7. Optional MADI communications module.
On the rear panel of AEQ FORUM you can find the physical connector for the AES10 - MADI
interface built into the console. The connector is an SFP chassis (Small Form-Factor Pluggable
- SFP) where you allocate the optional fiber-optic transceiver.
MADI protocol, which stands for multichannel audio digital interface is a professional standard
of data transmission for digital audio signals over 56 channels on a single cable. MADI protocol
is documented in the standard AES10-1991 and ANSI s4.43-1991.
AES10 MADI multichannel interface is an extension of AES3 protocol for interconnection of
multi-channel. MADI protocol, as defined in the AES10 standard allows connection of up to 64
audio channels (linearly quantified data) with a resolution of 24 bits per sample and a sampling
rate frequency of 48 kHz/s. Transmission is accomplished in a serial mode and if transmission is
done on a single 75 ohm coaxial cable with BNC connectors the distance reached is greater
than 50 m. If transmission is accomplished on a multi-mode fiber-optic interface the distance is
up to 2 km.
The audio samples may have a maximum of 32 bit quantization. Additionally, by using this
protocol, the bits of validity user status and parity of AES3 are maintained. The MADI protocol
allows you to connect 64 audio channels with a single pair of wires. The data bit rate is 100
MBits/s corresponds to a synchronous connection.
MADI Interface Specifications:
• Optical fiber connector, FDDI PMD type.
• Nominal range: 2.000 meters
• Fiber Type: 62.5 / 125 µm MULTIMODE MULTIMODO
• Transmission: LED, 1300 nm
NOTE: in order to activate this function you must purchase a user license.
2.2.3. Audio inputs/outputs modules.
FORUM AEQ includes enough space in its rear panel to accommodate a maximum of 14
independent modules of audio inputs and/or outputs in various formats. Depending on the type
of audio processed, each of these modules receives a specific identifier within the family of
products AEQ FORUM. AEQ is continuously developing new features for AEQ FORUM in order
to meet the market demands for different solutions.
Below is the list of modules currently available:
• FR02: 4 inputs and 4 outputs, digital stereo AES/EBU or SPDIF module.
• FR03: 2 mic/line (selectable) inputs module.
• FR04: 8 analogue mono line level inputs module.
• FR05: 8 analogue mono line level outputs module.
• FR33: digital telephone hybrid module.
Using the modules described above, in the numbers and available free position of the 14
available slots on the rear panel of AEQ FORUM, each customer can customize their AEQ
FORUM mixing console to exactly fit its specific requirements and applications.
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