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RockNet 300
RockNet 300
RockNet is a scaleable, cost-effective network solution conceived and optimized for managing audio and control data for live sound. It is designed to link up to 99 devices into one single network. Any of the 160 audio channels can be ‘dropped’ to a maximum of 768 outputs in the bidirectional network without limitation. A highlight of RockNet is the redundant ring topology. A connection failure between two devices does not affect the audio transmission or system integrity. The ring is self-healing and offers significant advantages in performance, consistency, and flexibility.
All products feature front-panel facilities to simply configure the unit without a computer. Optionally RockNet can be remotely controlled using the RockWorks PC software via the USB interface. A word clock in- and output is made available on the rear. A front panel 10/100BaseT interface provides a free wheeling data port that can be used for the transport of control data. The rugged steel enclosures are made for heavy duty road use and offer the distinct advantage of magnetic shielding. All connectors are gold plated. The circuit design is streamlined to ultra low noise and minimum distortion to meet the highest demands in audio quality.
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Control Section
The control section of all 19“ RockNet products provides the controls to set up and configure the unit without a computer. It incorporates three two-digit displays and six push buttons that are used for intuitive operation of a three level menu: Default mode, Channel mode, Options mode.
Default mode displays the status of the device when the system is in normal operation and shows:
· Device ID [1 to 99]
· Channel assignment for the left hand channels [quad 1 to 40]
· Channel assignment for the right hand channels [quad 1 to 40]
A ‘quad’ is a term used to describe a four channel block that simplifies the routing. The 160 transport channels are packaged into 40 quads.
Channel mode displays and controls each channel parameter. By pushing the select button besides the XLR connector of the respective channel, the parameter values are displayed and can be adjusted.
Options mode accesses general device setup:
· select primary / secondary master
· select sync source [internal / external wordclock / digital
Input #]
· select sample rate [48kHz / 96kHz]
· lock-out front panel operation
· switch off display
· display device temperature
LED indicators are provided for the redundant power supply and network connectivity status, master selection, external sync and sample rate.
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Network Interface
The network interface incorporates Media Numerics’ proprietary core technologies. Lateral™ ultra-low latency asynchronous transmission enables RockNet to support various redundant network topologies and to provide real-time, isochronous data transport in conjunction with packetized data such as TCP/IP. The data rate is 400 MBits/s on a CAT5 cable and the number of nodes is infinite, though limited to 99 for practical reasons.
Concrete™ clock recovery and jitter rejection utilizes a unique digital PLL structure. Jitter magnitude, spectrum and probability distribution are de-randomized by a sophisticated digital modulation scheme, resulting in an extremely high jitter rejection and zero jitter build-up through the network.
Two Ethercon® RJ45 network connectors link to an upstream and a downstream neighbor in a redundant ring topology. These two connectors can also be used to provide a parallel link in case of point-to-point network scenarios.
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Thermal Management and Power Supply
RockNet devices feature redundant switch-mode power supplies suitable for world-wide operation. The power supplies are modular and therefore provide easy replacement in case of failure. Locking IEC connectors are standard. Built in silent running fans add to the component reliability and enable ultimate rackspace efficiency.
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