+ Applications

In Radio and TV broadcasting:

  • Central transmission rooms, full broadcast-centre networking,
  • Studio routing matrices,
  • Transmission links

In recording and post-production studios:

  • Routing matrix for mixing consoles and studios
  • Complete wiring of studio complexes
  • A/D, D/A and format conversion

In theatres, concert halls, convention centres, exhibition grounds :

  • Interconnection of recording studios, stages, sound-reinforcement facilities, and other areas
  • Hall and building networking

+ Functionality

The NEXUS is the versatile audio network and routing system for controlling studio or mixing-console resources in switching rooms, for networking broadcast complexes, for sound-reinforcement, in O.B. trucks and for all other professional audio applications.

+ Networking

NEXUS is the perfect method for creating distributed infrastructures with minimal cabling complexity and cost using fibre-optic connections. It supports long-distance cable runs of up to 100 kilometres without any deterioration in audio quality or sync inaccuracies.
The duplex fibre-optic links transfer a total of 256 audio channels plus control and sync information. Allocation of audio channels is flexible — for example, 128 channels in each direction and 192/64 or 64/192 setups are also supported.

+ Operation

NEXUS systems are controlled using PCs running the GUI software. The NEXUS software provides intuitive access to and control of all system components. All settings can be stored and presets can be recalled easily. The computer is only required for configuring the NEXUS, not for normal operation. PCs are connected to NEXUS Base Devices via Ethernet, USB, or serial links.

+ System Size

NEXUS routing systems are configured for each client individually and can be extended subsequently. The user can change the physical network setup autonomously using the software. The audio-network software supports up to 31 Base Devices with a maximum resource count of 4,096 inputs and 4,096 outputs.

+ Components

NEXUS Base Devices are compact 19" mainframes for static or mobile use. 1 U, 3 U, 6 U, 9 U, 12 U, and 15 U versions are available. Input and output ports are on 3 U slide-in boards. NEXUS Base Devices are based on a 4 HP grid and accommodate modular boards such as I/O boards for analogue and digital audio, DSP boards for audio processing, special routing boards for data or switching signals and fibre-optic interface boards for interconnecting Base Devices.

+ Loudness Metering

Stage Tec is an active participant in the development of EBU R 128-compliant loudness metering. Latest-generation CPU boards for the NEXUS system (XCPU 09) implement three different metering methods on the NEXUS directly: Momentary loudness with an integration time of 400 ms, Short-term loudness with an integration time of 3 s and Integrated loudness with custom integration time, using a gating function.

+ Audio Quality

Stage Tec’s patented TrueMatch converters epitomise excellent conversion technology as well as the highest fidelity and guarantee unmatched audio quality. They achieve a dynamic range of up to 158 dB (A) and convert analogue to digital signals faithfully.

+ Audio Conversion

All audio boards read and write the 24-bit audio format used on the internal TDM bus. Therefore input audio of any type can be routed to any of the NEXUS audio outputs. Thus, when using a NEXUS, complex and costly format conversion ceases to be an issue.
Signal routing does not require signal-processor boards. However, NEXUS DSP boards are available for whenever signal processing is needed. Signals can be routed to DSP boards at any point with all the important control elements for EQ, delay, dynamics, faders, etc..

+ Redundancy

Secure operation is a core feature of the NEXUS. The systems can be equipped for maximum redundancy and each Base Device has an individual controller board. It is also possible to establish redundant fibre links between Base Devices. If a fibre link fails, the system switches automatically to a backup link within one sample! Another integral NEXUS security feature is the Auto Sync Search function which is launched in the event of a sync-source failure. If no external sync source is available, the system will synchronise to a Base Device internal clock generator. Base Devices can be equipped with redundant power supplies, for example, for operation on two separate circuits.

+ Reliability

The NEXUS »distributed intelligence« concept prevents complete failure in case of malfunctions. Failed components are recognised immediately thanks to a graphical alert system. Interface boards are hot-swap-enabled, i.e. they can be replaced during operation without affecting other system components. A newly installed board is available on the system within a few seconds.

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