Speaker Switching Unit
User Guide
For Technical Assistance
Please Phone: (07) 5596 5128
Page 2 National Communications
PRODUCT DESCRIPTION
The SPEAKER SWITCHING UNIT (SSU) accessory, is designed to
operate with the MULTIPLE INPUT UNIT (MIU) and the TALKING
DISPLAY UNIT (TDU).
This configuration will allow up to 12 separate (4 or 8 ohm) speakers, in
conjunction with up to 12 separate sensors to be connected to the one
Talking Display Unit (TDU).
This complete system then provides for up to 12 independent and
separate “zones” each with its own message and local speaker .
This means that :
Sensor 1 when triggered will cause Message 1 to play on speaker 1
Sensor 2 when triggered will cause Message 2 to play on speaker 2
Sensor 3 when triggered will cause Message 3 to play on speaker 3
Sensor 4 when triggered will cause Message 4 to play on speaker 4
Sensor 5 when triggered will cause Message 5 to play on speaker 5
Sensor 6 when triggered will cause Message 6 to play on speaker 6
Sensor 7 when triggered will cause Message 7 to play on speaker 7
Sensor 8 when triggered will cause Message 8 to play on speaker 8
Sensor 9 when triggered will cause Message 9 to play on speaker 9
Sensor 10 when triggered will cause Message 10 to play on speaker 10
Sensor 1 1 when triggered will cause Message 1 1 to play on speaker 1 1
Sensor 12 when triggered will cause Message 12 to play on speaker 12
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PRODUCT DESCRIPTION
The SSU also allows for a primary audio feed, if connected, that will be
supplied to all speakers at all times.
This primary audio feed will then be replaced by the TDU message, only
on the appropriate speaker, whenever the TDU is triggered. The primary
audio feed is then reconnected at the end of the TDU message.
Speakers can be located up to 100m from the TDU unit, or greater than 100m
from the TDU if low resistance wiring is used.
The remote speakers connect to the SSU via a female 25 pin D type
connector. Each speaker has been allocated a specific pin position (see
page 6).
This equipment supports unpowered 4 ohm speakers up to 5 watts or 8 ohm
speakers up to 2.5 watts. Alternatively, powered speakers, or an external
amplifier can be used for greater volume output.
Power for the SSU and communication between the SSU and the TDU is
achieved via a supplied 6 wire telephone cable, which connects to an RJ11
format 6 position communications port.
The SSU has 2 identical communications ports that provide for power and
communication between the SSU, the TDU and other TDU accessories, in
a DAISY CHAIN fashion.
It does not matter which of the identical communications ports are used for
input or output. A single 6 wire telephone cable is supplied with all TDU
accessories. There is no need for any other external connections.
The SPEAKER SWITCHING UNIT (SSU) accessory is available in 3 separate
configurations :
SSU-4 - 4 Speaker output unit for the Talking Display Unit
SSU-8 - 8 Speaker output unit for the Talking Display Unit
SSU-12 - 12 Speaker output unit for the Talking Display Unit
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INST ALLA TION
COMMUNICATION
Communication between the SPEAKER SWITCHING UNIT (SSU), the
TALKING DISPLAY UNIT (TDU) and the MULTIPLE INPUT UNIT (MIU) is
achieved via a standard 6 wire telephone cable.
A short 6 wire telephone cable is supplied with the SSU and the MIU.
This can be substituted if necessary with any 6 wire cable with a length
up to 100m.
POWER
Power for the SSU and the MIU is supplied from the TALKING DISPLAY
UNIT (TDU) via the same 6 wire cable.
INSTALLATION PROCEDURE
1) Using a 6 wire telephone cable, connect Communications Port 1 of
the SPEAKER SWITCHING UNIT (SSU) to the Sensor Input port of the
T ALKING DISPLA Y UNIT (TDU).
2) Using another 6 wire telephone cable, connect Communications Port
2 of the SPEAKER SWITCHING UNIT (SSU) to the Communications
Port of the MUL TIPLE INPUT UNIT (MIU).
3) Connect a separate 12VAC or 12VDC (minimum of 300mA - polarity
independent) power source to the power adaptor jack of the MUL TIPLE
INPUT UNIT (MIU).
This additional power input for the MIU is required to prevent the
possibility of ‘brown out’ when the SPEAKER SWITCHING UNIT and
MULTIPLE INPUT UNIT are used in the same application.
4) Solder the connections for your Speakers to the supplied Male DB25
connector, as per the table on page 6.
A separate male DB25 connector, with exposed terminals is supplied
with this unit to allow direct solder connection of cables leading to each
speaker.
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INST ALLATION
Each speaker has been allocated two specific pin positions and should
be connected to the DB25 connector as per the diagram and table on
page 6.
Speakers can be located up to 100m from the SSU unit, or greater than
100m from the SSU if low resistance wiring is used.
5) Connect the male DB25 connector (above) to the female DB25
connector fitted to the SPEAKER SWITCHING UNIT (SSU).
6) Using the 3.5 mm to 3.5 mm Audio cable that is supplied with the SSU,
connect the AUDIO output from the TDU into the AUDIO INPUT 1 port of
the SSU.
7) The SSU also allows for a primary audio feed, if connected, that will
be supplied to all speakers at all times.
This primary audio feed will then be replaced by the TDU message, only
on the appropriate speaker, whenever the TDU is triggered.
The primary audio feed is then reconnected at the end of the TDU
message.
The primary audio feed connects to the AUDIO INPUT 2 port.
8) Install the TALKING DISPLAY UNIT (TDU) and the MULTIPLE INPUT
UNIT (MIU) as per the separate instructions supplied with each unit.
9) Adjust the Audio Volume output of the TALKING DISPLAY UNIT (TDU)
to requirements.
10) Adjust the Audio Volume output of the primary audio feed (if used)
to requirements.
11) Complete connection and set up of the MIU unit and TDU unit as per
the instructions within the User Guide supplied with each of these
devices.
12) Test your system by triggering each switch connected to the MIU
unit.
Page 6 National Communications
DB25 PIN OUT DIAGRAM
1niP desUtoN
2niP +21rekaepS 41niP -21rekaepS
3niP +11rekaepS 51niP -11rekaepS
4niP +01rekaepS 61niP -01rekaepS
5niP +9rekaepS 71niP -9rekaepS
6niP +8rekaepS 81niP -8rekaepS
7niP +7rekaepS 91niP -7rekaepS
8niP +6rekaepS 02niP -6rekaepS
9niP +5rekaepS 12niP -5rekaepS
01niP +4rekaepS 22niP -4rekaepS
11niP +3rekaepS 32niP -3rekaepS
21niP +2rekaepS 42niP -2rekaepS
31niP +1rekaepS 52niP -1rekaepS
DB25 PIN OUT TABLE
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NOTES
Page 8 National Communications
SPECIFICATIONS
Dimensions (all in mm) : 106 (W) x 106 (D) x 43 (H)
Weight : 220g
Audio Input Port 1 : 3.5mm Mono Audio Plug
Audio Input Port 2 : 3.5mm Mono Audio Plug
Communications Port 1 : RJ 11 6 pin
Communications Port 2 : RJ 11 6 pin
Multiple Speaker Output Port : DB25 Female
C-Tick compliance : Supplier Number N782
WARRANTY
This device is guaranteed against defects from workmanship for a period
of two years (24 months) from the date of purchase.
In the event of failure, you should return the product, along with proof of
purchase date, and a written statement about the nature of the problem.
The obligation is solely to repair or replace the product. The warrantor
is not liable for any incidental or consequential damages due to such
defects.
This Warranty shall not apply to any unit which has been subject to
alteration, modification, abuse, negligence, accident, external voltage/
lightning surge or used in any manner contrary to these instructions.
The user is responsible for freight costs to the repair point. The warrantor
will be responsible for freight costs in returning this unit back to the
user.
Damage caused to this device or attached equipment, by lightning strikes
or over voltage surge is not covered under this warranty.
CASE SEALED AT FACTORY
OPENING THE CASE VOIDS THE WARRANTY
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