The Digital Communication System DVS-21 is a 4-wire-system which
includes the power supply to all modules of the system with the
control functions on a data bus. The system is freely programmable
and can be programmed with the Intercom Control Software (ICS)
via PC/modem or directly
with a notebook.
The digital central exchange is of modular structure,
compact and with uniform electronic interfacing independent of
the module application. The modules of a system are driven by the
processor module via a passive communication bus.
With only two basic eurocard modules, systems of up to 104 AF
interfaces (e.g. call stations) and up to 6KW of public address
output power can be controlled.
With the addition
of a serial interface
module the basic systems
are linked to form larger
600 intercom call
stations and/or 20 KW
of audio power.
Each system consists of 48-way speech paths of which
"group","all calls" and the individual
selective connection only occupy one of the 48 channels when
The User-Software ICS runs on Win 9x, Win ME, Win NT4, Win 2000
or higher. The software
is menu driven with
full graphic support
and is designed for
ease of operation.
A library of pre-programmed functions is contained
within the programme and is available to all users. Applications
of the highest complexity can be written from scratch or by modifying
the pre-programmed library utilising the ICS.
The cabinet exchange wiring inclusive of termination is also automatically generated
by the program enabling "As Is" documentation to be available at any time.
The processor module has the capability of storing 4 program listings
simultaneously and the automatic activation of a program or return to a previous
program with a simple click on data bank, takes less than a minute. Modifications
during commissioning can now be instantly tried with the assurance
that the last 3 settings can be instantly recovered in case
of problems. The system is permanently controlled with automatic
individual or common fault reports.
Programs for simulation and testing purpose are also built in to the ICS.
Even the mechanical and electrical constructional
features are common for the various interface modules. A uniform
configuration allows pre-wiring of a socket without knowledge of
its future application. The status of the system can easily be
identified without complicated measuring instruments, purely by
a simple balanced system of LED indicators on the front plates
of the modules.
Modules for the connection of the DVS-21 to existing
communication systems from other manufacturers are also available
and the replacement or expansion of other manufacturers central
equipment while retaining the existing and costly peripherals such
as intercom stations and loudspeakers is easily accomplished.
The basic modules of a system are:
the DC/DC converter module SV01 which provides a complete basic
processor system with the required power and operating voltage,
the processor module CPU1 which has the purpose to address and
control the system,
The select decoder module KSDE allows the expansion of the addressable modules of a processor system
in case of P.A. and exchange replacement applications.
The interface modules are considered in accordance to application requirements:
the audio frequency (AF) module 4NSA for connection of call stations
and for audio coupling to other systems,
the multifunctional interface module USE1 with RS485 and RS232 for
serial coupling, and together with an electro-optical converter for
fibre optic networks,
the multifunctional interface module USE2 for analogue coupling,
e.g. of radio systems and telephone systems inclusive of wireless
telephones to the DECT standard,
the multifunctional control module 4IOS with 8 opto coupler inputs
and 4 relay outputs with potential-free two-way contacts,
e.g. interfacing to Fire and Gas systems,
the digital storage module DSS1 for storage of free programmable
tones and messages, also RAM section with delayed announcement
the digital amplifier module V100 (see below).
For the replacement of other manufacturers systems:
the audio frequency (AF) module 4NPA for connection of analogue intercom call stations,
the line module 24LI for control of lines of other manufacturers intercom call stations incl. of crane stations,
the two central interconnection module 4ZZA for connection of call stations to other manufacturers independent systems.
The digital amplifier module V100 is of a compact modular design and simply
sets new standards.
The individual amplifier has an output power of 100 W and systems of 5, 10,
or 15 kW and more can be assembled in module racks as required.
Applications include; high power for announcements in large
areas, to increase the output power of a call station or as hot standby
The application purpose and characteristics are determined with
the user software ICS.
The current status of connected loudspeaker loops is constantly being
compared by the amplifier to a referance value, enabling instant reporting
of any deviation.