Dynacord PROMATRIX System, Reference Manual

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DEVICE DESCRIPTIONS
PROMATRIX System User Handbook 1.1
5-8
5.1.5 2-Channel Paging Station Module (NRS 90215)
This 2-channel audio input module is meant for the
connection of DPC 4000 Series paging consoles. Each of
the two input channels provide RJ-45 sockets allowing
the connection of up to 4 paging stations plus paging
station extensions per input. The microphone terminals
are interconnected via 6-conductor parallel cables. The
module can be installed in slot 1 and slot 2.
Next to the electronically balanced audio input, each input
connector provides a serial RS-485 interface port and the
power supply connection for the paging stations (see
also: pin-assignment of the RJ-45 connector). The paging
stations' power supply employs an electronic,
programmable fuse, through which the maximum output
current can be matched to meet actual system
accommodations. This prevents the entire installation
from malfunction, in case of short-circuit occurring in a
single paging station only.
Input channels can be switched separately onto the
monitor bus and you can monitor the audio signal via
headphones or loudspeaker, either which is connected to
the monitor output. If necessary, retrofitting the audio
inputs with transformers is possible.
DPM - PCI
DPC 4000 IN
90215
A
B
DPC 4000 IN
figure 5.7 2-channel paging station module
Note: When connecting several paging consoles to a single input, please keep in mind that line
interruption or short-circuit can cause malfunction of several or even all paging stations of that
specific line. In emergency alert installation, connecting security-related consoles to individual
inputs is therefore of major importance.
Specifications:
description DPM-PCI 2-channel paging station module, NRS 90215
connections 2 x RJ-45 sockets
audio
inputs 2, electronically balanced, transformers are optionally available
nominal input level 0 dBu / 775 mV
max. input level +12 dBu / 3 V
input impedance 20 k
Ω
input balancing > -30 dB
frequency response 20 Hz ... 20 kHz,
±
0.5 dB
S/N ratio > 100 dB (A-weighted)
distortion < 0.01 %
A/D-conversion 18-bit linear, Sigma-Delta
control interfaces 2 x RS-485 standard
power supply outputs for the DPC 4000 2, short-circuit-proof, electronically programmable fuses
supply voltage 24 V DC (21.6 ... 31.2 V DC)
nominal current 330 mA, 660 mA, 990 mA (adjustable, electronic fuse)
power consumption 2 W
operational temperature range +5
°
C ... +40
°
C
dimensions W x H x D 37.5 x 81 x 248 mm
weight 152 g (220 g including 2 x NRS 90208)
extensions NRS 90208 input transformer for 1 paging station input, order-No. 121 641