ARMTEL DCN-15A User manual

DCN-15А Analogue Interface
Module
RMLT.465275.001UM
User Manual
Version 13
26.30.11.110
2021

armtel.com
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DCN-15A ANALOGUE INTERFACE MODULE
User Manual
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ENG
INTRODUCTION
This User Manual applies to various versions of DCN-15A Analogue interface module
RMLT.465275.001 manufactured by Armtel LLC, and is intended to familiarize the User with
the device and the procedure for its operation at the installation site.
The DCN-15A module is a compact 15-channel converter of the E1 digital interface
into analog low-frequency communication lines and discrete control lines, for providing
communication with analog communication and signaling equipment as part of a distrib-
uted operational and technological communication system and DCN public addressing.
Short name of the product – DCN-15A.
Maintenance personnel for the DCN-15A shall be appointed by the management at
the installation site.
The maintenance personnel shall be required to know the operating procedure of the
DCN-15A to the extent provided for by the User Manual.
Duties of the maintenance personnel shall include maintenance of the DCN-15A in
accordance with this User Manual.

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SAFETY PROVISIONS
During installation and operation of DCN-15A, observe the safety measures specified
by local regulations on electrical safety.
When using DCN-15A for its intended purpose, it is necessary to comply with the
safety requirements determined by the "Labor Protection Rules for the Operation of Elec-
trical Installations" when working with electrical receivers with voltage up to1000 V.
To avoid electric shock, do not:
−Operate the product without connection of its enclosure to a grounding bus;
−Operate the product with damaged power supply and interface cables;
−Connect or disconnect Interface cables when the power cable isn’t disconnect-
ed.
ATTENTION: NEVER DISASSEMBLE THE PRODUCT CONNECTED TO THE POWER SUP-
PLY!
Never operate the product in rooms with high humidity (above 80%) or in cases
where current-conducting dust exists.
In order to ensure fire safety, follow the rules:
−Before connecting the product to the power supply, ensure that the power ca-
ble is intact and properly insulated
−Protect the power and interface cables from damage.
The safety provisions related to specific operations outlined in this manual are identi-
fied by the following sign:

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CONTENTS
INTRODUCTION .......................................................................................................................................... 1
SAFETY PROVISIONS ................................................................................................................................. 2
1DEVICE DESCRIPTION AND OPERATION......................................................................................4
1.1 Purpose of the product..............................................................................................................4
1.2 Specifications.................................................................................................................................6
1.3 Scope of supply ............................................................................................................................8
1.4 Design .............................................................................................................................................. 9
1.5 Labeling .........................................................................................................................................12
1.6 Package..........................................................................................................................................13
2INTENDED USE .....................................................................................................................................14
2.1 Operating limits ..........................................................................................................................14
2.2 Preparation for operation .......................................................................................................14
2.3 Safety precautions .....................................................................................................................15
2.4 Installation, connection and disassembly of the product............................................15
2.5 Operation......................................................................................................................................16
2.5.1 Procedure of actions of the service personnel when using the product .16
2.5.2 Turning the product ON and OFF .................................................................................16
2.5.3 Monitoring of the product operation in general ..................................................17
2.5.4 Trouble shooting ....................................................................................................................18
3MAINTENANCE.....................................................................................................................................19
3.1 General...........................................................................................................................................19
3.2 Safety precautions .....................................................................................................................19
3.3 Product maintenance procedure..........................................................................................19
3.4 Checking the functionality of the product........................................................................20
4REPAIR .....................................................................................................................................................21
5STORAGE ................................................................................................................................................22
6TRANSPORTATION .............................................................................................................................23
7DISPOSAL ...............................................................................................................................................24
APPENDIX A (REFERENCE) PRODUCT CONNECTION..................................................................25

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1DEVICE DESCRIPTION AND OPERATION
1.1 Purpose of the product
DCN-15A analog interface module (short name – DCN-15A) is designed for operation
in DCN digital communication system based on DCN-2 exchange or DCN-Q4E switching
module as analogue subscriber’s equipment for interface with analogue equipment and
communication systems of various types. DCN-15A contains 15 bi-directional analog LF
lines and 60 discrete bi-directional control lines for connecting terminal devices, as well as
a digital E1 interface for connection to DCN type central exchange.
External appearance of DCN-15A is illustrated at Figure 1.
Figure 1 – External appearance of DCN-15A
Note - The manufacturer reserves the right to change the appearance of the product, which
does not affect the installation dimensions and operation of the product.
DCN-15A can be used in public address systems in metallurgical, chemical, oil refin-
ing, nuclear (including nuclear power plants), oil and gas industries and similar ones in
terms of application, as well as in transport.
DCN-15Аis installed in telecommunication racks or cabinets located in control and
office rooms. DCN-15Аoperates at temperatures from minus 5 to plus 55 °С at a relative
humidity of up to 80%.
DCN digital communication system has a flexible distributed structure in which indi-
vidual stations are connected to a single network by digital E1streams. DCN station (or
center exchange) in its turn consists of DCN-2 exchange or DCN-Q4E module, to which E1
streams are connected by DCN-16U and DCN-15A subscriber modules equipped with digi-
tal or analog subscriber interfaces. E1 streams can also be used as ISDN PRI lines for com-
munication with external telecommunication systems, or for connecting multi-channel re-
cording equipment. DCN IP gateway, which provides communication with various IP-
devices, can also operate as a station of DCN system.

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Each DCN-15A is a subscriber switch with 15 bidirectional analog interfaces and al-
lows using analogue call stations as part of DCN digital communication system. Also, avail-
ability of up to 60 discrete programmable bi-directional communication lines in DCN-15A
provides creation of zonal alarm systems (up to eight zones per each channel of the analog
interface). To improve the quality of loudspeaker communication, when working with sub-
scriber equipment, an extended frequency band of audio transmission is used - from 0.3 to
6.8 kHz. DCN-15A is connected to the central exchange of DCN system via the E1 line, for
voice data and signaling transfer between the central exchange and the subscriber equip-
ment. Thus, all communication and control functions of subscriber units are implemented
in the central exchange of DCN system, and DCN-15A subscriber module does not perform
any communication functions without connecting to it.
Incorporated into DCN digital intercom system DCN-15Аprovides the following func-
tion:
−Connection via two-wire analog subscriber interfaces lines up to 15 analog
subscriber equipment of simplex communication, having up to eight keys / keys
for calling other subscribers of the communication system;
−Connection to the central exchange of DCN communication system and to
other DCN-15A via E1, a two-way simplex connection between 15 analog sub-
scriber equipment connected to the product and other subscriber equipment of
DCN communication system;
−Monitoring and indication on the front panel the status of subscriber interfac-
es, E1 line, as well as an indication of the status of DCN-15A itself and the integri-
ty of the power supply circuits;
−Connection of FM radio base stations and other loudspeaker equipment to the
analog interface via the gateway equipment manufactured by Armtel: " DCP /
MDK Radio connection gateway", "MDK - "Orekh" Gateway and others;
−Construction of multichannel zonal alarm system (up to 15 channels, maximum
eight zones per channel) with power amplifiers and relays for switching loud-
speakers;
−Connection of up to 8 discrete control lines for each analogue interface, but
not more than 60 for all 15 interfaces (an average of 4 per each), which can be
used as inputs, for example for connecting alarm and automation systems via
"dry contact", for indication on the keys of subscriber units connected to DCN-
15A, or outputs for control of external equipment and connecting relays for
switching alarms and automation equipment.

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DCN-15A is ready for operation when delivered and does not require programming
during operation, except for modifications in configuring the system (connection of addi-
tional call stations, amplifiers, etc.). The central exchange of DCN system, connected to
DCN-15A via E1 line, controls the operation of DCN-15A module and subscriber units or
discrete lines connected to it.
Detailed description for functional area and programming techniques of DCN ex-
changes is provided in RMTL.465275.002UM "DCN Communication System. User Manual.
Part 2. Administrator Manual”.
1.2 Specifications
DCN-15A has the following interfaces:
−E1 (G.703/G.704) – for connection to the central exchange of DCN system via
E1 stream;
−RS-232 (V.24) – to connect a computer at a speed of up to 115 Kbps, used for
diagnostics and initial programming of the exchange at the manufacturer;
−Line AB – 15 analog interfaces, consisting of two-wire symmetric low-
frequency AB line, with the output of the midpoint of the line transformer and the
output of L discrete control line;
−CTRL Line – 60 discrete bi-directional control lines. For each analog interface,
you can assign up to eight discrete bi-directional control lines in configuration of
DCN central exchange.
Main specifications and performance characteristics of DCN-15A are given in Table 1.
Table 1 – Main specifications and performance characteristics of DCN-15A (beginning)
Parameter Value
Rated voltage, V
-48
Power supply voltage range, V
from -36 to -60
Consumption power, max, W
20
Electrical protection class by IEC 61140-2012
III
Protection degree
IP20
Ambient air temperature range,
°
С
from - 5 to + 55

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Table 1 (end)
Parameter
Value
Atmospheric pressure, kPa
from 84 to 106,7
Relative humidity at 25 °С, %
Up to 80
Dimensions, max, mm
482×243×43
Weight, max, kg (without connection cables to DCN-15A)
(2,20 ± 0,05)
Analog Path Parameters
Number of analogue interface lines
15
Nominal output signal level, mV
775 ± 5 %
Nominal input signal level, mV
775 ± 5 %
Control lines for analog subscriber
Number of lines (configured as «input» and «output» for 48 V power supply)
60
Input current (line – «input»), max, mA
5
Output current (line – «output»), min, kA
50
The product ensures connection / disconnection of the configured subscriber equip-
ment without switching off the power and need to reboot.
DCN-15A provides protection against incorrect polarity of the power supply connec-
tion, protection against current and voltage overload for discrete lines, and protection
against impulse overvoltage for analog lines.
To connect analog and digital lines and the E1 line to DCN-15A, DCN-15A is
equipped with 1 to 4 connection cables. The appearance of DCN-15A connection cable is
illustrated in appendix A.

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1.3 Scope of supply
The scope of supply is given in Table 2.
Table 2 – Scope of supply
Identification
Name
Quantity,
Note
RMLT.465275.001*
DCN-15АAnalogue interface module
1
Additional information
RMLT.469413.001
DCN-15АConnection cable
From
Depending on ver-
Socket PC 4/3-STF-7,62
1
Operational documentation
RMLT.465275.001PP
DCN-15АAnalogue interface module
1
RMLT.465275.001UM
DCN-15АAnalogue interface module
1
* Product version in accordance with the delivery set. Parameters of the corresponding ver-
sion (number of cables) see table 3.

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1.4 Design
DCN-15Аis designed for installation into 19" cabinet (rack). The external appearance
and dimensions of DCN-15Аare illustrated at Figure 2.
Figure 2 – External appearance and dimensions of DCN-15А
DCN-15Аis manufactured in four versions depending on number of connection ca-
bles. Hardware versions are given in Table 3.
Table 3 – Versions of DCN-15A
Identification
Number of connection cables
RMLT.465275.001
1
RMLT.465275.001-01
2
RMLT.465275.001-02
3
RMLT.465275.001-03
4

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Figure 3 shows front panel of DCN-15A with connection sockets and LED indicators.
Figure 3 – Front panel of DCN-15А
The front panel of DCN-15Аincludes:
−RST – reset key;
−PWR – indicator of primary power supply source 48 V (fuse);
−«+3,3» – indicator of voltage + 3,3 V of the secondary power supply source;
−NORM – indicator of analogue interfaces state;
−АLARM – fault indicator for DCN-15A;
−«E1» – indicator of E1 interface state;
−CPU – indicators of CPU state. The periodic flashing means normal operation
mode of the DCN-15A module microcontroller;
−«1…15» – indicators of subscriber equipment connection ports;
−DBGU – microcontroller boot loader key.
ATTENTION: PRESSING OF THE KEY LEADS TO ERASE OF EMBED-
DED SOFTWARE!
−DBGU –RS-232 interface socket for connection of the computer during initial
loading of the DCN-15A software;
−UART –RS-232 interface socket for connection of the computer during diagnos-
tics of the product.

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Figure 4 shows the rear panel of DCN-15A.
Figure 4 – Rear panel of DCN-15А
The rear panel of DCN-15Аincludes:
−«-48V 0 GND» – three-contact plug for connection of power supply cable for
DCN-15А;
−FUSE – power supply circuit fuse DCN-15А ВПТ6-11 5,2×20 3,15 А 250 V;
−«CTRL Line 1 - 30» and «CTRL Line 31 - 60» – 36-contact sockets for connec-
tion of discrete control lines;
−«Line AB 1 - 8» – 36-contact sockets for connection of analogue lines 1…8 of
DCN-15A subscribers;
−«Line AB 9 – 15 + Е1» – 36-contact sockets for connection of analogue lines
9…15 of DCN-15A subscribers and Е1 line for connection to DCN system central
exchange.

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1.5 Labeling
On the left side of the DCN-15Аhousing is placed bilingual nameplate.
The nameplate contains the following information:
−name, trademark and reference information of the manufacturer;
−product name and description;
−temperature range;
−degree of protection provided by enclosures (IP code);
−rated supply voltage;
−commercialization mark for products on the market of Customs Union member states;
−electrical class III mark according GOST IEC 61140-2012;
−special waste disposal mark;
−product serial number;
−date of manufacture.
The serial number is unique for each product.
The serial number is indicated on the front panel of the product.

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1.6 Package
DCN-15Аwith the documents, which come with the supply package, is packed in
consumer package (cardboard box).
A label in Russian language and English language is glued onto the consumer pack-
age, said label containing the following inscriptions and symbols:
−product name and description;
−name, trademark and reference information of the manufacturer;
−handling symbols according to GOST 14192-96 and CU TR 005/2011;
−commercialization mark for products on the market of Customs Union mem-
ber states;
−serial number and date of manufacture.
The package is made according to the drawings of the product manufacturer and en-
ables storage of the DCN-15А, provided requirements set in Section 5 are met.
For shipment of the DCN-15Аfrom the manufacturer, consumer package contents
are placed in the package place, which ensures protection from mechanical damage, direct
ingress of atmospheric precipitation, dust and solar radiation during transportation.

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2INTENDED USE
The product is designed for continuous 24-hour a day operations. After commission-
ing, the product does not require operator intervention, unless:
−maintenance;
−product configuration changes.
Maintenance personnel must be strictly guided by this document in compliance with
safety regulations.
The product along with the operational documentation is delivered to the customer
in packaged form.
2.1 Operating limits
2.1.1 DCN-15A shall be used under exposure factors and ambient parameters which
do not exceed permissible values given in Table 1.
2.1.2 The requirements for operating conditions and the choice of the place of in-
stallation given in this document take into account the most typical factors that affect the
operation of DCN-15A.
Factors that cannot be predicted, estimated or verified, and which the manufacturer
was unable to factor in during development may exist or arise during operation at the op-
erating facility. In the event of such factors, find another operating site where said factors
do not exist or do not affect operation of the product.
2.2 Preparation for operation
Preparation of DCN-15A for operation should be performed by Manufacturer author-
ized representatives or qualified personnel with completed training to operate Armtel
product. The main preparation for further product use is carried out during installation and
connection. Preparation of IPN-8U for operation includes the following activities:
−Remove the DCN-15A and the connection cables from the shipping container.
−Remove the DCN-15A and the connection cables from the individual container.
−Check the completeness of the DCN-15A in accordance with the product pass-
port.
−Visual inspection of unit for damages (cracks, dents, etc.).
−Installation of DCN-15A module on site in 19" cabinet (rack).
−Perform electrical installation and connection of DCN-15A (see 2.4).

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2.3 Safety precautions
During installation and operation of IPN-8U, observe safety precautions specified in
the section «SAFETY PROVISIONS».
2.4 Installation, connection and disassembly of the product
2.4.1 After installation of DCN-15Аinto 19" cabinet (rack), connect electric circuits to
the module in the following order:
−Connect DCN-15A connection cables, included in the scope of supply, to the
sockets on the rear panel of DCN-15A. Fix the cable boards to DIN-rail mounted
in the cabinet (rack);
−Connect to three-contact power socket PC 4/3-STF-7,62 power supply and
grounding wires (see Appendix A) and, not turning the power supply on, connect
it to PC 4/3-G-7,62 plug of DCN-15А.
2.4.2 DCN-15A is connected to DCN-2 exchange via E1 line. The connection is carried
out by means of a four-wire UTP cable, which is connected from one side to terminals 29 ... 32
of XS8 terminal block on DCN-15A connection cable No. 2, and from the other side can be
crimped with RJ-45 plug for connection to RJ-45 socket located on DCN-2 central exchange.
2.4.3 Connect the communication lines with the terminal subscriber units to the
terminal blocks of DCN-15A connection cable according to the general design of the
communication system.
2.4.4 Turn on the power supply of the product.
2.4.5 Disassemble DCN-15A in the following order:
−disconnect the power supply and disconnect the power cable socket from the
power plug;
−disconnect the connection cables from the DCN-15A connectors;
−remove DCN-15A from the cabinet (rack);
−pack DCN-15A in individual packaging.

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2.5 Operation
2.5.1 Procedure of actions of the service personnel when using the product
To maintain the DCN-15A, an administrator and a duty engineer are required, whose
functions can be distributed or combined in accordance with the organizational structure
of the enterprise.
Details of the duties of officials when using the DCN-15A are given in the document
RMTL.465275.002UM "DCN Communication System. User Manual. Part 1”.
2.5.2 Turning the product ON and OFF
The product is switched ON by connecting the power supply source to DCN-15A
power socket.
After initialization is completed, DCN-15A performs the following functions:
−Provides communication between subscriber units and performs other func-
tions according to the configuration data;
−Monitors the operation ability of DCN-15A units, subscriber interfaces and E1
interface;
−Display the monitoring information and error messages.
The product is switched OFF by switching off the power supply source, and
all DCN-15A indicators go out.

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2.5.3 Monitoring of the product operation in general
Possible states of DCN-15A indicators depending of its operation modes are given in
Table 4.
Table 4 - Possible states of DCN-15A indicators depending of its operation modes
Indicator State Notes
Indicators of DCN-15A
ports (1-15)
Off
The port in not involved in configuration
Flashes
The port is used
Solid GREEN
The port in involved in configuration
NORM indicator
Off
Fault in DCN-15A operation
Solid GREEN
Normal operation of DCN-15A
PWR indicator
Solid GREEN
Common fuse of DCN-15A is OK
Off
Common fuse of DCN-15A is faulty
Indicator «+3,3»
Solid GREEN
Secondary power supply voltage is on
Off
Secondary power supply voltage is absent
АLARM indicator
Off
Normal operation of DCN-15A
Solid RED
Fault in DCN-15A operation
E1 stream indicator
Solid RED
E1 stream is absent
Solid GREEN
There is connection via E1 stream

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2.5.4 Trouble shooting
Possible problems and their solutions are given in Table 5.
Table 5 - Possible problems and their solutions
Problem Possible causes Solutions
When DCN-15A is turned on, the
indicators are OFF
DCN-15A is not connected to the
power supply source
Connect it to the power
supply source
When the DCN-15A is turned on,
indicator of one port (several ports)
(1-15) is OFF
The port is not involved in configura-
tion
Configure the port
When DCN-15A is turned on,
«E1» indicator is RED
DCN-15A is not connected to DCN-2
Find the reason and cor-
rect it
When DCN-15A is turned on,
«Аlarm» indicator is RED
No secondary power supply + 3,3 В
DCN-15A needs repair
Faults issued by CPU
When DCN-15A is turned on,
«+3 ,3» indicator is OFF
No secondary power supply
DCN-15A needs repair