Studer’s D21m I/O System is now Axia Livewire™-Ready

D21m Card

The D21m Livewire I/O card is the newest addition to Studer’s versatile D21m I/O system. The D21m system is used for mixing consoles and audio routers but can also be used for standalone applications.

Live-What?Livewire is an audio networking protocol developed by Telos Systems. It enables the transportation of real-time, live audio together with control metadata via a switched Ethernet network. The network delivers the audio data via switches to all devices to which the audio is assigned.

When using Livewire, audio can be directly connected to the network. Audio delivery systems – or other audio devices, such as Studer’s renowned mixing consoles – can use their Ethernet connection for sending and

receiving audio signals to and from the network with no alteration or degradation, ensuring low-latency workflow.

The Studer ApproachWhile standard sound or audio I/O cards require individual cabling, Studer’s D21m Livewire card

Back

plane

LivewireSIM Module

1

WCLK OUT

8 x I2S

pMux 4 x I8S

D21m SPI

ConfigDevice

JTAG

SPI

EXT_MASTER_REF_CLK

2 x FS CLK, AIN_CLK

8 x I2S

2 x FS CLK, AIN_CLK

CLK

UART/CTRL

UART/CTRL

24 V / 5 VConv.

25 MHz DIPSwitches

LEDs

LivewireSIM Module

2

Studer D21m Livewire card block diagram

Studer Professional Audio GmbH, Riedthofstrasse 214, CH-8105 Regensdorf, Switzerland Phone +41 44 870 75 11, Fax +41 44 870 71 34, http://www.studer.chStuder USA, 8500 Balboa Boulevard, Northridge, CA 91329, USAPhone +1-818-920-3212, Fax +1-818-920-3208, http://usa.studer.chStuder reserves the right to improve or otherwise alter any information supplied in this document or any other documentation supplied hereafter. E&OE 08/12

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Studer D21m Livewire Card

transfers the combined digital audio data over Ethernet links.The Livewire card is a single-slot unit accommodating two Livewire SIM modules. Each Livewire SIM module can send and receive up to eight stereo signals to and from the Livewire network.

SynchronisationEach Livewire node features a PLL to recover the audio clock from multicast clock packets generated by the internal master.

This Livewire audio clock may be used as clock reference for a Studer OnAir or Vista console.

If required, the mixing console can be the Livewire clock master alternatively.

ApplicationsThe new Studer D21m Livewire card may be added to new and existing Studer consoles. The diagram above illustrates how to

connect additional outside sources and targets to an existing system by using Livewire.

In order to interconnect inputs and outputs of two or more different consoles, the combination of Studer’s RELINK (I/O sharing) with Livewire leads to economic solutions if the number of shared inputs and outputs is in a low to medium range.

Studer D21m Livewire card application example

Livewire Audio Node 1

HD Link(I/O Sharing Point-to-Point)

HD Link

OnAir Studio 1 OnAir Studio 2

SCoreRoute6000

* D21mLivewireI/O Card

SCore

D21mI/O

8 × S

tereo

8 × S

tereo

LivewireSwitch

Livewire Audio Node 2

Livewire Audio Node 3

Console (e.g. Vista 5)

AES/EBU Sources 1...nMADI Sources 1...m

AES/EBUMADI

Console (e.g. Vista 9)

Livewire Audio Node x

*