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NEXUS
Digital Audio Baugruppen

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NEXUS Digital Audio Card XMF

The XMF MADI card provides a simple, powerful solution for connecting a NEXUS system to MADI equipment anywhere.

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NEXUS – XMF – The concept:


The XMF plug-in card is ideal for exchanging many channels with external MADI-capable devices. Up to 64 channels can be received and transmitted. The board supports 56 and 64 channel MADI formats and automatically detects incoming audio streams. The XMF card also supports legacy mode, where the MADI connection works at twice the sampling rate, i.e. up to 96 kHz, but half the number of channels. In transparent mode, AES additional data can be transferred and read out and are available for further use by the user. For example, they can be output to an XTI board anywhere else in the network or displayed in the NEXUS operating program.

The XMF card can also receive compressed or encoded audio signals on MADI channels and transmit them transparently over the NEXUS network. It is certified by Dolby Laboratories for the transmission of Dolby-E. Optionally, sample rate converters for 64 channels are available, which can be assigned either completely to the inputs or outputs or 32 channels each of both inputs and outputs.

Each XMF board has a BNC input, a BNC output and an SFP port that can be equipped with the SFP module required for each application so that a wide range of scenarios with both singlemode and multimode fiber optic cables is supported.

NEXUS – XMF – Features:


Combined version with BNC input, BNC output and LC optical connection 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.


Adjustable digital gain in the inputs The input signals can be amplified or reduced with a digital gain adjustable in 1dB steps.

Transmission of Dolby E signals The XMF board is certified by Dolby Laboratories, Inc. to transmit Dolby E signals.

Optional sample rate converter Optional sample rate converters can be supplied for the XMF card, which can be optionally assigned to the inputs or outputs.

Support of MADI legacy audio at 96 kHz 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.

Evaluation of additional data in the MADI data stream 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).

Automatic detection of the number of channels in the MADI data stream When evaluating the MADI additional data, the number of received channels is automatically recognized.

NEXUS – XMF – Use cases:


Feeding NEXUS with multichannel audio 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.

Connection of DAWs or other multichannel feed systems Shows and events are often supported with feeds from DAWs or other playback systems. Integrating such multichannel 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. direct out or other audio signals for recording can be sent on the return channel.

Multichannel recording from the NEXUS networks 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 STAGETEC console, microphones and line sources are connected to NEXUS Base Devices on stage. 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 multichannel 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.

Connections between different NEXUS networks 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.

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NEXUS - XMF - Downloads:


ST22_XMF EN
.pdf
Download PDF • 898KB
ST22_NEXUS Folder_EN_08_31_DOWNLOAD
.pdf
Download PDF • 5.79MB

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