Dynacord PROMATRIX System Reference Manual page 20

DEVICE DESCRIPTIONS
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
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.
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
connections
audio
inputs
nominal input level
max. input level
input impedance
input balancing
frequency response
S/N ratio
distortion
A/D-conversion
control interfaces
power supply outputs for the DPC 4000
supply voltage
nominal current
power consumption
operational temperature range
dimensions W x H x D
weight
extensions
5-8
employs an electronic,
DPM-PCI 2-channel paging station module, NRS 90215
2 x RJ-45 sockets
2, electronically balanced, transformers are optionally available
0 dBu / 775 mV
+12 dBu / 3 V
20 kΩ
> -30 dB
20 Hz ... 20 kHz, ± 0.5 dB
> 100 dB (A-weighted)
< 0.01 %
18-bit linear, Sigma-Delta
2 x RS-485 standard
2, short-circuit-proof, electronically programmable fuses
24 V DC (21.6 ... 31.2 V DC)
330 mA, 660 mA, 990 mA (adjustable, electronic fuse)
2 W
+5 °C ... +40 °C
37.5 x 81 x 248 mm
152 g (220 g including 2 x NRS 90208)
NRS 90208 input transformer for 1 paging station input, order-No. 121 641
DPM - PCI
DPC 4000 IN
A
DPC 4000 IN
B
figure 5.7 2-channel paging station module
PROMATRIX System User Handbook 1.1
90215