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Neumann DMI-8 US

The Neumann DMI-8, an eight-channel version of the digital microphone interface is considerably simplifying the setup for multichannel applications.

In addition to the proven functions of the two-channel DMI-2 portable the DMI-8 also offers the following features:

- The capability of cascading up to 128 channels
- D-sub 25 outputs with Tascam and Yamaha pin assignments
- Optical ADAT interface
- Open architecture for later connection to other multi-channel interfaces and audio networks, such as EtherSound and MADI

The DMI-8 offers several possibilities for easy integration into audio networks. The ES100 (DMI-8) module permits integration into EtherSound networks.

Explanation Mode 2:
The DMI performs a frequency/phase comparison between the word clock signal recovered from the mic signal, and the word clock of the DMI. From the phase deviation thus determined, the DMI calculates a control signal which is transmitted via the remote control data stream to the mic, where it controls the frequency of the internal quartz oscillator.
Operating temperature:
0 °C ... +45 °C

Storage temperature:
-20 °C ... +70 °C

Relative humidity max.:
90 % at +20 °C

AES42 inputs:
8x XLR3F

Audio data in accordance with AES/EBU (AES3) data format:
Digital phantom power (DPP)
Remote control data

Phantom power (DPP):
+10 V, max. 250 mA per channel, short-circuit proof

Remote control data:
Pulses (+2 V) superimposed on the phantom power, approx. 750 bits/s or 9,600 bits/s (depending on the microphone)

2x SUB-D 25
AES/EBU (AES3) data format
Yamaha® and Tascam® pinout,
1x Toslink
ADAT format up to 48 kHz
1x RJ 45
GN format up to 192 kHz, incl. power-out pin: approx. +15 VDC, max.1 A, short-circuit-proof

Sampling rates supported:
44,1 / 48 / 88,2 / 96 kHz /176,4 kHz/ 192 kHz

Microphone synchronization:
AES42 - Mode 2 (synchronous mode) Microphone clock control via PLL

DMI-8 Synchronization:
automatically to an external word clock or AES11 signal, if present, otherwise the internal word clock generator is activated.

Word clock (or AES11) input:
Vin: >100 mV at 75 ohms Word clock (or AES11) output BNC
Vout: = Vin (external synchronization)
Vout: approx. 1.5 V at 75 ohms (internal word clock generator)

Internal word clock generator:
44,1 / 48 / 88,2 / 96 kHz / 176,4 /192 kHz, Accuracy ±25 ppm

Ext Word Clock
Level (microphone)

Control elements:
8x Channel Select
GAIN +/-

Control bus:
2 x RJ 45 ports; connection to computer USB port via the Neumann USB 485 interface converter; connected in parallel for the purpose of cascading. RS 485 with additional power-out pin (approx. +11.3 V, max. 500 mA)

Device address (ID):
0 to 15, adjustable viacoding switch on the backof the device

User port:
9-pin sub-D
1 switch function per channel (Mute and/or Light 1/Light 2 selectable)

Power supply:
90 V to 240 V; 50/60 Hz

Power consumption:
< 55 VA

Dimensions (W x H x D):
483 x 88 x 210 mm

approx. 2,8 kg
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Additional information
For more information about the DMI-8 US, please visit the website of Neumann
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