DEVICE DESCRIPTIONS
PROMATRIX System User Handbook 1.1 5-23
5.1.10 2-Channel LINE Output Module (NRS 90218)
The output module is meant for the connection of power
amplifiers with an input sensitivity of 0 dB or +6 dB. Two
XLRM-type connectors allow the connection of up to 20
power amplifiers each. The audio signal is electronically
balanced; if necessary, transformers can be retrofitted.
The module can be installed in slot 3 or slot 4.
The output channels can be switched separately to the
monitor bus and you can listen to the signal via
headphones or loudspeaker, either which is connected to
the monitor output. Automatic pilot tone surveillance of
the two output channels is also integrated. The jumpers
for adjusting the output voltage to 0 dB or +6 dB are
located on the printed board assembly. At the same time
you have to alter the jumper setting of the monitor signal
correspondingly.
The output module employs integrated output relays that
prevent switching noise from being heard. When
switching the system on, the output signal is put through
after the system is been initialized (power-on delay); the
contacts are immediately interrupted when switching the
power off.
DPM - OUT
9 02 18
B
L IN E
O UT
0/ + 6 dB u
L IN E
O UT
0/ + 6 dB u
A
figure 5.27 2-channel LINE output module
Specifications:
description DPM-OUT 2-channel LINE output module, NRS 90218
connections 2 x XLRM-type connectors
audio
outputs 2, electronically balanced, transformers are optionally available
nominal output level 0 dBu / 775 mV or +6 dBu / 1.55 V, switched via jumper
output impedance 115 Ω
frequency response 20 Hz ... 20 kHz, ± 0.5 dB
dynamic range > 97 dB (A-weighted)
S/N ratio > 109 dB (A-weighted)
distortion ≤ 0.005 %
D/A-conversion 20-bit linear, Sigma-Delta
power consumption 1.5 W
operational temperature range +5 °C ... +40 °C
dimensions W x H x D 37.5 x 81 x 247 mm
weight 160 g (255 g including 2 x NRS 90227)
extensions NRS 90227 output transformer for 1 output order-No. 121 679
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