Signal Processing Systems : AV Input / Output Boards & Cards : Electro Voice - MI-1

8-channel NetMax Analog Mic/Line Input Card

Series: NetMax

Model: MI-1

Eight electronically balanced mic/line inputs
Euroblock connectors
48 V phantom power
Mic/line pad, selectable via IRIS-Net
Gain and level adjustable via IRIS-Net

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The MI-1 is an eight-channel microphone input module for use in an Electro-Voice N8000 system. Microphone signals are connected via screw-lockable Euroblock connectors. A-to-D conversion is taken care of by high performance linear 24-bit converters. Internally the signals are processed in 48-bit word length. Up to three MI-1 can be used simultaneously in a N8000.

Eight electronically balanced mic/line inputs
Euroblock connectors
48 V phantom power
Mic/line pad, selectable via IRIS-Net
Gain and level adjustable via IRIS-Net
Automatic configuration
IRIS-Net notification of installation and removal
On-board DSP (100 MIPS)

Input/Output Board/Card Type - Audio

Supply voltage/current:
•+3.3 V DC, +/-0.3 V/180 mA
•+5 V DC, +/-0.3 V/1 A
•+18 V DC, +/-0.5 V/400 mA
•-18 V DC, +/-0.5 V/150 mA
Audio Inputs: 8 x 3-pole Euroblock connectors, electronically symmetric
Input level (nominal): +6 dBu/1.55 V
Input level (max. before clip):
•Microphone +21 dBu/8.7 V
•Line +39 dBu/69 V
Input sensitivity (6 dBu Output, Input Level Control +18 dB):
•Microphone -72 dBu/195uV
•Line -54 dBu/1.55mV
INPUT IMPEDANCE:
•Microphone 2 kohm
•Line 8 kohm
Common mode rejection (1 kHz):
•Microphone > 75dB
•Line > 60dB
Equivalent Input Noise (EIN): -129 dBu (A-weighted, 150-ohm source)
Phantom power: +48 V/10 mA, independently switchable per channel
A/D conversion: 24 Bit, Sigma-Delta, 128 times oversampling
Frequency response: 20 to 20000Hz (-0.5dB)
Signal-to-noise ratio (A-weighted) : 118dB typical
THD+N: Less than 0.005%
Sample rate: 48 kHz
Data format: 24 Bit linear A/D conversion, 48 Bit processing
Signal delay: 66 Samples = 1.375 ms at 48 kHz
Electro-magnetical environment: E1, E2, E3
Depth: 258.50 mm
Height: 33 mm
Width: 114 mm
Product Weight: 0.25 kg
Operating Temperature (Maximum): 40 C
Operating Temperature (Minimum): 0 C

Microphone/Line Input Card 293 kb - Data Sheet

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