DEVICE DESCRIPTIONS
PROMATRIX System User Handbook 1.1
5-14
5.1.7 2-Channel MIC/LINE Input Module (NRS 90217)
This 2-channel audio input module is meant for the
connection of external audio sources, like microphones,
mixers, etc. Both channels are furnished with XLRF-type
connectors. The module can be installed into slot 1 and
slot 2.
The sensitivity of the MIC / LINE inputs can be adjusted
in a wide range. The internal MIC / LINE switches (PADs)
provide 30 dB attenuation. The separate GAIN-controls
for each channel provide additional control in a range of
40 dB. The MIC / LINE inputs are electronically balanced
and can be retrofitted with transformers. Phantom power
can be switched via jumper setting. If necessary,
compressors / limiters can also be incorporated in the
audio paths via jumpers.
Input channels can be switched separately onto the
monitor bus and you can listen to the signal via
headphones or loudspeaker, either which is being
connected to the monitor output.
M IC /
L IN E
IN
M IC /
L IN E
IN
GAI N
9 02 17
B
M IC /
L IN E
IN
A
GAI N
DP M - M L I
figure 5.15 2-channel MIC/LINE input module
Specifications:
description
DPM-MLI 2-channel MIC/LINE input module, NRS 90217
connections
2 x XLRF-type connectors
audio
inputs
2 x electronically balanced, transformers are optionally available
nominal input level
MIC:
-54 dBu ... -14 dBu / 1.5 mV ... 155 mV
LINE:
-24 dBu ... +16 dBu / 50 mV ... 5 V
max. input level
MIC:
+5 dBu / 1.4 V
(in limiter operation)
LINE:
+30 dBu / 25 V
input impedance
MIC:
3.6 k
Ω
LINE:
10 k
Ω
Input balancing
> -30 dB
phantom power
24V / 20 mA, switched via jumper
frequency response
20 Hz ... 20 kHz,
±
0.5 dB
S/N ratio
> 95 dB (A-weighted)
distortion
< 0.01 %
A/D-conversion
18-bit linear, Sigma-Delta
phantom power
24V / 20 mA, switched via jumper
power consumption
3 W
operational temperature range
+5
°
C ... +40
°
C
dimensions W x H x
D
37.5 x 81 x 252 mm
weight
160 g (186 g including 2 x NRS 90233)
extensions
NRS 90233 input transformer for 1 MIC/LINE input, order-No. 121 682
Summary of Contents for PROMATRIX System
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