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5. Connection of the receivers (wiring - topology):
Refer to chapter V for details on receiver wiring.
Passive audio receivers (2-wire) are wired using a 2-wire intercom cable, and the
terminals of all receivers are connected in parallel and connected to the "LINE"
terminals of the door entry unit. Make sure that + terminals of the receiver are
properly connected to LINE+ of the door entry unit and - terminals of the receiver
properly connected to LINE - the door entry unit. Improper wiring of even one
receiver will cause bad operation of the entire system.
Same with active audio receivers that need two additional wires for power supply.
All power and LINE terminals of the receivers are to be connected in parallel. In
small systems one power supply will support both the receiver and the door entry
unit - in each case a DC power supply. For larger installations that require
additional power supplies for receivers, LINE and -DC (GND) terminals of all
receivers should always be connected in parallel then connected to door entry
unit, and the +DC to -DC terminals for additional power supplies.
For Video systems, the entire wiring must be made using UTPs in T568B
standard, min. cat 5e standard (all wires to be used); these systems also require
optional combiner modules : CDNVS for Master panels and CDNVSp for Slave
panels.
Note! All UTPs should be ended with an RJ-45 plug, making sure that the same
wire sequence is maintained.
UTP should origin at the door entry unit (combiner output), to the main input of
the first splitter, then the main output of the splitter is to be connected to the main
input of the next splitter and so on. The last splitter must be a terminal splitter or
a video terminator jumper.
All splitter in video systems must be active and the monitors are to be connected
using relevant outputs of the splitter. Monitors on cat 5e UTPs should be
connected at a distance of 70m or less from the connection point, while the whole
system must remain within 300 m. Additional power supplies can be connected
directly to the splitters - then the right jumper in specific splitter must be removed.
Another way to wire the installation is to keep all active splitters in one place and
branch to each monitor. In system with multiple video door entry units (Master /
Slave), panels must also be connected with UTPs.
In simple video installations with only power supply unit (connected to the
combiner), the maximum distance between the door entry unit and terminal
monitor is 70 m. Connect additional power supplies to distributors or directly to
monitors in order to couple monitors over longer distances.
With additional wires (refer to the beginning of the chapter for information) and
with CDNVRau-DIN active splitters (offered by ACO) to amplify the video signal,
video installations may have up to 1000 m.
Typically, the monitor is powered using UTPs (double pair) via a combiner,
intermediate combiner or splitter and turns on automatically when its address is
called and turns off when the connection is ended. In this setup one 15VDC /
2.8A power supply supports 5 splitters. When the option of image viewing at any
time is enabled in the monitor (without having to call from the panel), the monitors
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