Altronics A 4488 Manuale di istruzioni per l'uso - Pagina 3

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Connecting the Paging Console/s and Audio Switcher
The Paging console/s and Audio Switcher are connected by a CAT5e cables with a maximum run distance of 300 metres.
This CAT5e cable can be connected to either of the two RJ45 ports provided on the rear of the microphone. A 24V DC
power supply rated at a minimum of 1A is required to power the system. Power connection must be made by connecting
power to the Audio Switcher via a 2.1mm DC Jack. Power is then fed through the CAT5e cables to supply power to the
paging consoles. We recommend fitting the power supply with the Altronics P 0602 2.1mm DC Plug with collar which can
be screwed onto the DC socket to prevent accidental disconnection of power.
The balanced audio output from the microphone is transmitted down the CAT5e cable to the Audio Switcher which splits
and converts the signal to microphone and line level outputs. These are provided as screw terminal connections.
Volume controls for the microphone volume and chime volume are located on the rear of the microphone.
Connection Configurations
There are three basic different configurations for switching the audio output from the A 4489 Audio Switcher to the
output zones.
Option 1 : Individual Zone Amplifiers using Microphone Level Signals
The audio from the paging console/s is fed down the Cat5e cable to the A 4489 audio switcher. Take the low level
balanced signal from the "Mic Out" terminals on the rear of the A 4489 and feed them back into the "Audio In"
terminals on the rear of the A 4489 as shown in Fig 3.
The audio from the "Zone 1" to "Zone 4" terminals are then fed into individual amplifers to provide the audio for the
four zones. The audio from these output terminals are switched internaly by relays and are not present unless the zone is
activated by the paging console/s.
Use this method if using amplifiers with low level balanced inputs. If the amplifiers used have line level inputs use the
configuration outlined in option 2.
Typical connection of the A 4488/s and A 4489 with individual ampli ers for each zone using mic levels
24V DC POWER SUPPLY
SUCH AS M 9391A PLUGPACK
OR SIMILAR 24V 1 AMP SUPPLY.
POWER MUST BE CONNECTED
AT THE A 4489 LINE OUT BOX.
A 4488
4 Zone Communicator
Lock On
Page
All Call
Cancel
System Busy
www.altronics.com.au
To Paging Consoles
24V
DC IN
-
+
CAT5 cable
Max 300M
A 4488
4 Zone Communicator
Lock On
Page
All Call
Cancel
System Busy
Line Out
Mic Out
Zone 4
Zone3
Zone2
Zone1
Audio In
-
+
-
+
-
+
-
+
-
+
-
+
+
MIC LEVEL SIGNAL
P 0602
Fig 3
Redback® Proudly Made In Australia
-
ZONE 1 AMPLIFIER
L
2
1
3
OUTPUT
R
Line
Mic
240V AC @ 50Hz
Fuse 800mA
ZONE 2 AMPLIFIER
L
2
1
3
OUTPUT
R
Line
Mic
240V AC @ 50Hz
Fuse 800mA
ZONE 3 AMPLIFIER
L
2
1
3
OUTPUT
R
Line
Mic
240V AC @ 50Hz
Fuse 800mA
ZONE 4 AMPLIFIER
L
2
1
3
OUTPUT
R
Line
Mic
240V AC @ 50Hz
Fuse 800mA
+
+
+
+
3