ADI-642 AES

The ADI-642 is an eight-channel format converter from MADI to AES and vice versa. MADI handles sixty-four channels of 24-bit audio at sampling frequencies up to 48kHz, thirty-two channels up to 96kHz and sixteen channels at 192kHz. All channels are transferred across a single cable, using either a coaxial (BNC) or optical network cable. The AES/EBU channels are provided via 4 XLR inputs and outputs, respectively.

Amongst other applications, the unit can serve as an AES/EBU front-end for RME's Hammerfall DSP MADI PCI card. An easy-to-use 72 x 74 routing matrix can assign any individual input channel to every single output channel, allowing for the free configuration of all sixty-four MADI channels and the eight AES channels.

When the single-space rack-mount unit is serving as a format converter, cable lengths of more than 100 meters can be achieved. The ADI-642 accepts both fifty-six and sixty-four channel standards as well as 96k frame at its input and can be set to generate both these formats at its output. This way the ADI-642 can serve as an interface between otherwise incompatible MADI devices.

Key Features

• Eight-channel MADI/AES format converter
• MADI redistributor, patchbay and router
• Extensive status displays give information about Lock and Sync states, audio content and the physical quality of the incoming signal
• A fully automatic input selection between optical and coaxial input offers a useful redundancy mode for critical applications
• Supplies word clock in Single, Double and Quad Speed, distributes Double Wire 96kHz signals into the MADI data stream and to the AES ports and supports the
• double MADI sample rate (96k frame)
• SyncAlign and SyncCheck technologies ensure perfect synchronization and clear detection of errors
• Multiple units can be stacked and operated sample-aligned, using word clock.
• All settings are stored when the unit is switched off
• Sixteen MIDI channels can be transferred across MADI even with 64 audio channels
• The device can be fully remote controlled and configured via MIDI and all status displays can be queried through MIDI
• Each unit in a multiple-unIt'setup can be given a separate ID, allowing separate remote control of the devices utilizing only a single MIDI channel

Technical Specs

ADC      
Not applicable
DAC      
24-bit
Sample Rates   
Internal: 32, 44.1, 48, 88.2, 96, 176.4 and 192kHz
External: Accepts between 28kHz and 204kHz depending on clock source master
Analog Inputs   
No
Analog Outputs               
1 x 1/4" stereo monitor output
Digital Input      
4 x XLR AES/EBU (24-bit up to 192kHz)
1 x MADI Optical via FDDI duplex SC connector
1 x BNC MADI
Digital Output  
4 x XLR AES/EBU (24-bit up to 192kHz)
1 x MADI Optical via FDDI duplex SC connector
1 x BNC MADI
Word Clock       
1 x BNC input
1 x BNC output
Dynamic Range Monitor: 140dB RMS unweighted, 143dBA
Frequency Response    
Monitor: 1Hz to 20.1kHz, -0.1dB @ 44.1kHz
THD + N              
Monitor: -85 dB, <0.005%
Dimensions (WxDxH)   
19" x 9 1/2" x 1 3/4"
Weight
4.4 lbs
Specialties         
The routing matrix can assign any of the 36 stereo input pairs to the monitor