The MADI Interface Card for NEXUS Base Devices
The XMF MADI card provides a simple, powerful solution for connecting a NEXUS system to MADI equipment anywhere.
The XMF MADI card provides a simple, powerful solution for connecting a NEXUS system to MADI equipment anywhere.
The board has both BNC and optical LC connectors via which the Madi signal can be fed into the Base Device. The preferred input can be selected in the operating software; in automatic mode, the module automatically recognizes which connection is used.
The input signals can be amplified or reduced with a digital gain adjustable in 1dB steps.
The XMF board is certified by Dolby Laboratories, Inc. to transmit Dolby E signals.
Optional sample rate converters can be supplied for the XMF card, which can be optionally assigned to the inputs or outputs.
MADI data streams in legacy format can also be received and sent without any problems. By halving the number of channels, the sampling rate can be doubled.
The following additional data contained in the MADI data stream are evaluated by the XMF card the first four bytes of the channel status such as format, emphasis, lock, etc. and the channel parameters (on/off, A/B, validity).
When evaluating the MADI additional data, the number of received channels is automatically recognized.
It is becoming increasingly common for external digital devices to support mixing consoles with effects. The MADI standard has proven itself in both studio and live operation. Well-known companies offer hardware solutions that use this format and have found an easy way to integrate their systems into the NEXUS network in the XMF card. Examples include the Waves Soundgrid system and the Universal Audio Live Rack with its electrical and optical MADI interfaces for real-time audio effects.
Shows and events are often supported with feeds from DAWs or other playback systems. Integrating such multi-channel audio sources into NEXUS-based production is easy with the XMF-MADI interface. Multiple MADI connections can be seamlessly integrated and the channels, including status information, can be routed on the NEXUS network. With the same interface, e.g. DirectOut or other audio signals for recording can be sent on the return channel.
Recordings are common at events and productions, whether as quality assurance or for follow-up in any form. For example: A concert is mixed with a Stage Tec console, microphones and line sources are connected to NEXUS Base Devices on stage. In addition to the Star Router, which contains the audio processors of the mixing console, there is also a NEXUS Base Device with audio outputs, which is intended for transferring the mix to the system technician, inputs for feeders and talkback microphones. There is also an XMF board that supports a DAW or mobile recording device that can be powered by any audio channel on the NEXUS network: unprocessed input signals, mixer signals from a freely selectable direct-out point, summing, etc. MADI is an excellent multi-channel interface with 64 audio channels per line for such purposes, because any audio signals from the NEXUS network can be converted into a MADI data stream and additionally provided with status information.
It is possible for two separate NEXUS networks to exchange audio channels, but it is not possible to merge them, such as temporary scenarios such as support for studio production by an OB truck or collaboration between several OB vans during an event. Even permanent installations, such as 96kHz for recording and 48kHz for sound reinforcement and broadcasting, require separate NEXUS systems
; in these situations where separate NEXUS networks are required to exchange audio channels, this can easily be done via MADI lines. The integrated sampling rate converters ensure optimum connectivity even in asynchronous operation.
XMF_4 | 1 x 4TE |
BNC | 1x | MADI | Input |
BNC | 1x | MADI | Output |
SPF | 1x | MADI | bidirectional |
All relevant specifications comply with the following standards: | |
AES 10-1991 (ANSI S4.43-1991), AES 10id-1995; AES 10-2008 | |
Data formats | MADI; transparent routing of compressed audio, Dolby E certified |
Data rate | 125 Mbits |
Sample rates | 44,1 kHz, 48 kHz, 88,2 kHz, 96 kHz |
Audio data | 24-bit |
Latency | RX < 3 samples TX = 2 samples |
Configuration | Format conversion, transparent forwarding of all MADI-format user bits |
Number of channels | 1…64 (1…32 @ 96 kHz) |
Optical | (e.g. SPM-3102WG module) LC, 1310 nm, 62.5/125 μm, -19...-12 dBm |
Electrical | BNC port; differential output, galvanic isolation; output impedance: 75 ohm (typ.) |
Number of channels | 1 - 64 (1 - 32 in 96-kHz mode) |
Optical | (e.g. SPM-3102WG module) LC, 1310 nm, 62.5/125 μm, –19...–12 dBm |
Electrical | BNC port; differential input, galvanic isolation; input impedance: 75 ohm (typ.) |
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Optical LC | Multi mode: 2 km (max., depends on module and fiber); Single mode: 100 km (max., depends on module and fiber) |
Electric BNC | 50 m (max., recommended) |
Temperature range | 0° C to +50° C |
Max humidity | max. 90 %, non-condensing |
Temperature range | –35° C to +70° C |
Max humidity | max. 90 %, non-condensing |
Voltage | +4,75…5,25 V |
Current | 400 mA (without SRCs); 1250 mA (with SRCs) |
Weight | 0.25 kg, 0.27 kg (with SRCs) |
Contact
Stage Tec Entwicklungsgesellschaft |
für professionelle Audiotechnik mbH |
Tabbertstraße 10-11 |
12459 Berlin/Germany |
Fon +49 30 63 99 02 - 0 |
Fax +49 30 63 99 02 - 32 |
office@stagetec.com |