Audio Interface

Audio Interface
Galaxy Dimension and 2-Way Audio
Introduction
The Galaxy Dimension allows multiple audio channels to be linked to the intruder system in order
to provide audio verification following an alarm activation. This will allow sound from the area of
the alarm activation to be transmitted to the Alarm Receiving Centre with the alarm signal. This can
be recorded audio captured at the time of the activation as well as live audio. Depending on the setup, it may be possible for the operator at the receiving centre to talk back to the site. An Audio
Controller card is required to enable audio on the Galaxy. This allows up to two audio channels to
be connected. If further channels are required, the audio system can be expanded using the MUX
modules. Each alarm group on the Galaxy can have one audio channel assigned to it.
Audio Interface
The Audio Interface is connected to the Galaxy RS485 line to allow the panel to control the audio
function and connected to the PSTN line to allow it to transmit the audio signals to the Alarm
Receiving Centre.
Notes: 1. Make sure that the Galaxy RS485 cable is at least 30 cm away from other cables.
2. Make sure that the Galaxy RS485 cable does not run parallel to other cables for extended
distances (maximum 5 metres).
For expansion using MUX modules, the Audio Interface all has connections for a high speed
digital audio bus in order to connect the MUX modules. Up to three speaker-mic devices, such as
the TP800, can be connected to each audio channel.
The Audio Interface acts as the master to a dedicated Audio RS485 line on to which 8 off-board
Mux Modules can be connected.
1
Addressing
The Audio Interface has a fixed module address.
Mounting
The Audio Interface is mounted in two ways:
• above the control panel PCB using a specially designed mounting plate.
• inside a standard RIO box separate from the control panel.
Connecting the Audio Interface to the PSTN
The Audio Interface must be connected to the Galaxy panel PCB as in the following diagram.
Connecting Microphones and speakers
The Audio channels can work with most line-level audio equipment. Microphones must have a preamplifier that deliver audio at line level (3V peak to peak). The audio card can transmit audio to
speakers with their own amplifier which accepts line level signals. Please see any instructions with
the Microphone device regarding the adjustment of sensitivity. The Galaxy Audio system can be
used with the following Honeywell audio devices:
TP800:
IS215TCE-MIC:
Speaker and Microphone unit
PIR detector with built-in microphone
TP800 Connection
The following table details the terminal connections of the TP800 speaker unit to the Audio
Interface:
2
Table 3-7. TP800 Connections to Audio Controller
IS215TCE-MIC Connection
IS215TCE-MIC
Audio Interface
GND
12V
+
MIC
M
GND
G
IS215 connection to Audio Controller
MUX Module
The MUX Module allows four additional audio channels to be connected. It is connected to the
RS485
Audio Bus and acts as a slave module to the Audio Interface.
Each audio channel can have three standard speaker-mic devices such as the TP800 connected.
3
Addressing
The Mux Module must be given a unique address before it is connected to a power supply. This
address is selected using the 16-way Rotary address Switch (SW1). Valid addresses are 0 - 7.
Connecting the MUX Module to the Audio Interface
The MUX Module is connected to the Audio Controller via the RS485 Audio Bus. The following
table shows the connections.
Audio Control
RS485 Bus
GND
Audio A
Audio B
MUX RS485
Audio Bus
GND
Audio A
Audio B
Table 3-8. Mux Connections
NOTE: The MUX module can either be supplied with DC power from the Audio Interface or from
a local Power Supply Unit (eg Smart). See Figure 3-8.
Connecting Microphones and speakers
The MUX module is connected to microphones and speakers as per the Audio Controller. See table
3-7.
Using the audio
Programming set up
The Audio channels must be mapped to alarm groups using menu. This allows the Galaxy panel to
know which audio channel to send to the alarm receiving centre following an alarm activation. In
this menu, its also possible to specify which type of alarm events will result in listen-in operation.
In use
The audio system continuously records the audio from all channels in a 10 second loop. When an
alarm activation occurs, the audio form the specified channel stops recording and the audio from the
time of the alarm is saved, including a few seconds from before the activation of the detector. The
panel will dial the Alarm Receiving Centre normally and transmit the alarm message and then stay
on the line to allow the operator to listen to the audio. The Galaxy system will automatically select
the specific channel to be transmitted. The operator has three control options using a DTMF
telephone keypad;
1:
2:
3:
99:
Talk to site
Listen to recorded audio from the activated channel
Listen to live audio from the activated channel
End call
II1-0801 rev 1.0
4
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