Neumann DMI-8 RAV 8-Channel Digital Microphone Interface with Integrated Ravenna Module, Silver

Digital Microphone Interface DMI-8 with Ravenna
The Ravenna interface card allows to connect the DMI 8 to Ravenna/AES67 networks and allows in AES 67 mode even streaming to DANTE devices in AES 67 mode.

According to AES67/Ravenna PTP is used to synchronize the DMI to the network. Via an internal webinterface the user can control microphone and DMI parameters.

The Digital Microphone Interfaces in general

Equipment that supports the AES 42 standard can process the output signals of Solution-D microphones directly. In all other cases, the DMI-2 portable or DMI-8 digital microphone interface is used. The DMIs convert the AES 42 data format supplied by the microphone into an AES/EBU signal.

The Interface is operated and the microphone parameters are controlled via the Neumann RCS remote control software, which is installed on a desktop or laptop computer. The computer is connected to the DMI via a USB port and a USB to RS 485 interface converter. If a large number of microphones is used, several DMI-8's can be cascaded. In this case, each digital microphone interface can be addressed individually.

In addition to a word clock input and output, the DMIs also have an internal word clock generator. If no master word clock signal (e.g. from a mixing console) is present at the input, the DMI internal word clock is used automatically to synchronize the microphone channels, and the signal is switched to the word clock output.

External commands such as "On Air" (red light) can be controlled via a 9-pin user port.

The DMI-8
The DMI-8, an eight-channel version of the digital microphone interface is considerably simplifying the setup for multichannel applications. The DMI-8 offers several possibilities for easy integration into audio networks. The ES100 (DMI-8) module permits integration into EtherSound networks.

Inputs and outputs

• AES42 input: 8 x XLR 3F (Audio data in accordance with AES/EBU (AES3) data format, Digital phantom power (DPP) and remote control data
• AES/EBU output (AES3 Data format): 2 x SUB-D25 Yamaha and Tascam pinout
• ADAT: 1 x Toslink, up to 48 kHz
• GN OUT: 1 x RJ 45 (special serial data format developed by GN, used as a gateway for integration in audio networks. The GN signal will be used by Neumann's Multi Channel Audio Interface (MCA) for converting of the GN data format to formats such as EtherSound, MADI, etc. (MCA available as option)
• Word Clock (AES11): 2 x BNC for internal and external synchronization
• CTL Bus (RS 485): x RJ 45 ports (connection to computer USB port via the Neumann USB 485 interface converter, connected in parallel for cascading purpose)
• User port: 9-pin SUB-D, 1 switch function per channel (mute and/or Light 1/2 selectable)