TOA EX-16
INTERCOM SYSTEM
INSTALLATION HAND BOOK
TOA ELECTRIC CO., LTD.
KOBE, JAPAN
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1. Introduction
This is the installation manual for the exchange, stations and other
components of TOA Intercom System EX-16. It includes an outline of the
system, an explanation of installation, cable connection, inspection
procedures and a troubleshooting guide. Careful study of this manual
is recommended prior to installation of the system.
This manual is only intended to give the information necessary for
proper installation of the system.
Prior to installation of the system, unpack the components of the
system to make sure that they are in order.
2. Introduction of the EX-16 System
Because the EX-16 System is a fully electronic intercom system, it has
the following features that surpass conventional mechanical systems.
1. All components of the exchange are designed according to the
modular concept. Each module and the integral terminals for
connecting stations are connected to the mother board, thus
eliminating wiring between the two, resulting in a sizable reduction in
the number of procedures required to install the system.
2. The exchange is a wall-mounted type for space conservation.
3. Wiring for each station is an independent 4-wire system which uses
a minimum number of connecting wires resulting in greater ease
in installation.
2.1 Exchange
2.1.1 Features
The features of the TOA EX-16 Intercom System are as follows:
1. All components of the exchange are designed as plug-in modules.
This results in a great increase in ease of maintenance, expansion,
and in speed of the system installation.
2. Extensive incorporation of IC's in the electronic circuits of the
exchange results in a highly compact, space-saving design and in
quieter operation than conventional intercom systems.
The system consists of only two types of basic electronic units.
This, in turn, means greater freedom in selection of an installation
site.
3. Since the system is completely electronic, power consumption is
kept to a minimum.
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2.1.2 Specifications
The exchange is available with the following specifications.
EX-16 Capacity:
Dimensions:
16 lines max. (with paging function)
360(W) X 300(H) X 100(D)mm
(14.2" X 11.8" X 3.9")
Weight:
8.3 kg (18.3 lbs.) with 16 lines
Exchange capacity can be increased within the given limits in units
of 4 lines.
Exchange Specifications
Ambient Temperature
Range:
32°~104°F (0°~40°C)
+7dBmmax.
Audio Input Level:
Audio Output Level:
Bandwidth:
+30dBm max.
200Hz~10KHz
-60dB/1.5KHz
Crosstalk:
Subscriber Impedance: 600 ohms balanced (input/output)
Power Consumption:
Power Source:
30W
AC 110, 120, 220, 240V 10%
DC 24V
2.1.3 Further Details
The exchange is composed of the following sections:
* CPU (Central Processing Unit)
* LAU (Line Amplifier Unit)
* DSM (Power Supply Module)
* Integral terminal board for connecting stations
The power supply module can be removed from the exchange case.
The exchange operates on AC/DC power.
The exchange is a compact, wall-mounted type. The connectors and
terminal for stations are on the mother board and completely assembled at
the factory.
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(b) CPU (Central Processing Unit)
The Central Processing Unit is divided into two sections: common control
and speech path.
Common control: This section consists of a microcomputer and associated
other circuits. It controls receiving dial data from stations, opening and
closing of speech path, controlling of signal, paging and BGM switches in
accordance with the exchange program.
Speech path: This section consists of a voice switching circuit, signal
generator, link busy signal circuit, BGM amp and the paging amp. It is
controlled by the common control section.
common
remote
control
control
circuit
control output
paging
link
speech signal in
speech signal out
(voice switching
circuit)
signal
generator
BGM
link busy
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(c) LAU (Line Amplifier Unit)
The Line Amplifier Unit consists of a power supply circuit for stations,
transmitting and receiving circuits for voice signal, speech path switches,
BGM switches and the dial data receiving circuits.
One unit accepts up to 4 stations. A maximum of 4 LAU's can be installed.
switch
T
receiving
circuit
transmitting
circuit
switch
R
control signal
dial data in
out
dial
receiver
(d) DSM (Power Supply Module)
The Power Supply Module consists of a power supply unit for the exchange
and terminals for external input and output connections. This module is
attached to the mother board with a connector and can be easily detached
from the exchange.
5V
AC in
power
supply
circuit
18V
GND
24V
GND
DC in
remote
BGM in
paging out
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(e) Integral Terminal for Connecting Stations
The connection terminal for the exchange and stations is built into the
exchange and connected to each LAU with a mother board.
(Wiring of the terminal and the station will be explained in a separate
section.)
2.1.4 System Block Diagram
A block diagram of the EX-16 system is shown below. In a standard system,
at least one LAU-16 is installed. The remaining units are optional.
Each LAU-16 contains the necessary circuitry for four stations.
Station
Terminal
LAU-16
(1)
LAU-16
(2)
CPU-16
LAU-16
(3)
DSM-16
LAU-16
(4)
Units
Inside View
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2.2 Stations
2.2.1 Features
The stations used in the Toa Intercom EX-16 have the following features:
1. Each station is provided with a male 4-pin plug (YC-102) for easy con-
nection to cables.
2. Wiring from the exchange to each station is an independent 4-wire
system. The fact that only 4 wires are necessary makes installation
easier, and with a 4-pin jack (YC-101 or YC-103) at the end of each
cable, connection can be made quickly with only a screwdriver.
There are three types of stations available: the desk-top type, the
flush-mounting type and the desk/wall type. Each type is available in 2
models (master and substation) and can be chosen in accordance with
requirements.
2.2.2 Specifications
Stations are available in the following three models.
Desk/Wall
Type
without
Handset
Desk
Type
with
Flush Mount
Type
with
Handset
Model
Function
Type
Handset
Master Station
Substation
HFM-500
HFS-500
HFM-510
HFS-510
HFM-100
HFS-100
Optional Accessories:
Master Station:
Sub Station:
YC-100 Wall mounting panel for HFM-100 and
HFS-100.
YC-510 Back box for HFM-510 and HFS-510.
Capable of calling any master/substation in
the system, and also of using all available
functions.
Capable of calling only its Master Station, and
also of using the privacy, single digit dialing
press-to-talk and BGM selection functions.
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Station Specifications
Permissible Loop
Resistance:
300 ohms
Input/Output Impedance: 600 ohms (balanced)
Loudspeaker Output: 300mW maximum
Handset Speaker Output: 100mW maximum
2.3. Accessories
2.3.1 Wall Mounting Panel (YC-100)
The wall mounting panel is used for HFM-100 and HFS-100 when these
stations are to be surface wall-mounted.
2.3.2 Talk-Back Unit (TKU-11)
This unit, optional amplifier (10W max.) and speaker (Hi-Z) will allow high-
volume paging with response from speaker. Conversations are conducted
by using the press-to-talk bar for press-to-talk and release-listen. The
talk-back speaker also operates when all-call paging is made from a master
station.
MAX 10W
SPEAKER Hi-Z
TALK-BACK UNIT
Fig. 5
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1. Power Switch
SPECIFICATIONS
Power Source:
Input:
2. Power Indicator
3. Output Volume Control
4. Input Volume Control
5. Rubber Foot
100~120/200~240V AC
Talk-Back Max. 30 dBm,
Amplifier Max. 10W, Hi-Z
Talk-Back Max. 10dBm,
Amplifier 0dBm,
6. AC Inlet
Output:
7. Voltage Selector
8. 8-Pin Terminal Board
9. Output Jack
Voice Switching
Control:
10. Terminal Board Cover
Voice Switch or Press-To-Talk
55dB
Speech Control:
S/N
204 X 202 X 98mm
2kg
Dimensions:
Weight:
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3. Installation of the EX-16 System
3.1 Precautions for Installation
3.1.1 Exchange
Pay particular attention to the following points:
* The layout should allow easy servicing and inspection.
* The exchange is compact and lightweight; however, it is important to
ascertain the strength of the wall on which it will be placed.
* The exchange should be grounded. When it is used in combination with
other systems (for example, with a PA system) the exchange should
be connected to the other components for common grounding.
* Choose a low "source noise" AC power supply for the exchange. Line
noise can affect speech quality.
*
Make sure that the AC power circuit provides adequate insulation and
capacity.
This high-performance exchange is compact as well as quiet, and can be
easily installed almost anywhere. Areas described below, however, should
be strictly avoided.
* An area where it will obstruct traffic, for example, in a hallway or near
the entrance or exit of a room.
* An area where it will be exposed to fire, heat or direct sunlight. Suitable
ambient temperature is +32°~104°F (0°~40°C).
* A dusty area where it will be exposed to metal dust or dirt.
* Near a storage place for chemicals, oil, etc.
* An area subject to vibration.
* Near high-voltage equipment.
* In a strong electrical field.
*
Near equipment vulnerable to the influence of an electrical field.
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3.1.2 Stations
Particular attention should be given to the following points during
installation.
* A desk-type, wall-mounting-type or desk/wall-type should be chosen
according to the user's need.
* If the all-call paging or talk-back function is adopted, precautions should
be taken to ensure against feedback due to interference between the
station (microphone) and the paging or talk-back speaker; that is, they
should be installed facing different directions or separated as far as
possible from each other.
* The "para-branching" operation or the connection of more than one
station to one circuit is not possible.
* Adjust the volume switch and volume control on the station for com-
fortable speaker output level or for avoiding troublesome acoustical
conditions (e.g., reverberation or echo).
Stations are compact for easy installation almost anywhere. However, areas
described below should be strictly avoided.
* An area where it will be exposed to fire, heat or direct sunlight.
* A dusty area where it will be exposed to metal dust or dirt.
* Near a storage place for chemicals, oil, etc.
* An area subject to vibration.
* Near high-voltage equipment.
* In a strong electric field.
* On the same circuit as a SCR type light dimmer.
3.1.3 TKU-11
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