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Redback® A 4480B 8 In to 8 Out Audio Switcher
4.0 EMERGENCY OVERRIDES & PRIORITIES
4.1 PRIORITIES
There are 5 levels of priority in the A 4480B.
Level 1 The emergency microphone is a hard wired microphone which connects to the 3 pin XLR connection as shown
in the full connection diagram. This has top priority and will override all other inputs. The gain of this microphone
is set by the screwdriver adjust controls on the front of the A 4480B. A signal presence LED indicates signal being
received from the microphone.
Level 2 The A 4481 paging console (optional) has an emergency paging function which will override all other inputs
except the emergency microphone. See section 5.1 for details. The gain of this microphone is set by the screw
driver adjust controls on the front of the A 4480B. A signal presence LED indicates signal being received from the
microphone.
The priority input operates on the same priority level as the A 4481 paging consoles. (See section 5.2 for details)
The priority input and the paging consoles work on a First In Best Dressed basis.
Level 3 The alert/evacuation tones provide the next level of priority and will override all inputs except the emergency
paging microphone, the paging consoles (if fitted) when used in emergency paging mode and the priority input.
Level 4 The A 4481 paging console when operating in standard paging mode has the next level or priority and will over
ride all local zone inputs and line inputs.
Level 5 The A 4478 local input wallplate (optional) will override audio routed to the same zone the A 4478 is connected
to.
Input audio sources 1-8 have the lowest priority and will not override anything.
4.2 PRIORITY INPUT
The priority input can be triggered via a closing contact or a vox operated audio input. This makes it useful for applications
such as telephone paging or the playing of the ODE in RSL clubs when used in conjunction with a timer.
ALERT - EVACUATION MODULE
Aux Input Sensitivity
DIP Switch Settings
SW1
(1) Input 1
Voice
Chime
Alert
Over
& Evac
(2) Input 2
Output levels
Triggers
(3) Input 3
The Alert/Evacuation module has multiple chime options, a recordable
(4) Input 4
voice-over message and adjustable alert to evacuation tone switch-over times.
SW2
These options are selectable inside the unit, via the BCD rotary switch and
DIP switches located on the alert/evacuation module (refer to below settings).
(1) Input 5
BCD & DIP SWITCH SETTINGS
DIP
(2) Input 6
DIP SWITCH
CHIME CONTACT
4
5
6
7
CH2
CH1/CANCEL
SW
ON
OFF
(3) Input 7
OFF OFF OFF OFF
Pre Announce
Ding Dong
1
Momentary Alert
Latched Alert
& Evac operation
& Evac operation
ON OFF OFF OFF
Pre Announce Repeating Bong
(4) Input 8
OFF
ON OFF OFF
Pre Announce Repeating Bing
2
Voice-over
Voice-over
message ON
message OFF
OFF OFF
ON OFF
Pre Announce
CANCEL
OFF OFF OFF
ON
Ding Dong
Pre Announce
3
Not Used
Not Used
ON
ON
ON
ON
Ding Dong
Repeating Bong
4
Mic recording
Mic recording
enabled
disabled
OFF
ON
ON
ON
Ding Dong
Repeating Bing
ON OFF
ON
ON
Ding Dong
CANCEL
Earth Lift
24VDC In
24VDC In
ON
ON OFF
ON
Repeating Bong Pre Announce
ON
ON
ON OFF
Repeating Bong
Ding Dong
OFF OFF
ON
ON
Repeating Bong Repeating Bing
OFF
ON OFF
ON
Repeating Bong
CANCEL
OFF
ON
ON OFF
Repeating Bing Pre Announce
ON
ON OFF OFF
Repeating Bing
Ding Dong
ON OFF
ON OFF
Repeating Bing Repeating Bong
-
+
ON OFF OFF
ON
Repeating Bing
CANCEL
Lift/Chassis
The priority or All Call input operates on the same priority level as the A 4481 paging consoles. They all work on a First In Best
Dressed basis. This will over-ride all other inputs except the emergency microphone. The output level of the priority input
can be adjusted vis the trimpot on the rear of the A 4480B. The audio input has a trimpot adjustable vox input sensitivity.
18
Redback® Proudly Made In Australia
INPUTS
R
ON OFF
8
7
6
0.3V 0.7V
SW2
0.3V 0.7V
L
0.3V 0.7V
1
2
3
4
0.3V 0.7V
ON OFF
8
0.3V 0.7V
0.3V 0.7V
1
2
1
2
1
3
0.3V 0.7V
3
3
0.3V 0.7V
1 - Shield
2 - Hot
3 - Cold
Manufactured in Australia By
Altronic Distributors Pty. Ltd.
www.redbackaudio.com.au
DC Fuse
Power Fail
Micro SD Card
16GB
Maximum
(4A M205)
Keyboard
2
1
5
4
3
SW1
3
1
2
3
4
7
6
5
1
2
2
1
2
1
2
3
3
3
8
7
6
5
4
3
ZONE PLATES OR PRESET PLATE
Telephone Paging System
Fig 4.2A
SW3 Input 1 & 2 XLR
Phantom Power Settings
SW
ON
OFF
(1) Input 1
ON
OFF
(2) Input 2
ON
OFF
2
1
SW3
SW4
SW5
(Not Used)
3
1 2 3 4
1 2 3 4
1 2 3 4
1
2
1
2
3
4
1
2
3
4
1
2
3
4
3
2
1
2
1
2
1
2
3
3
3
Priority Input
2
1
Vox
L
R
Trigger
Volume
Level
www.altronics.com.au
Setup Guide
EMERGENCY INPUT
2
1
3
4
2
1
3
SW5
ON
OFF
1
1
Phantom
Phantom
1 - Shield
Power On Power O
2
Mic Level
Line Level
2 - Hot
3 - Cold
Switches 3 & 4 Not Used
To Paging Consoles/Preset Plate
1
2
3
4
Vox
(Maximum 500mA per output)
Level
Closing contact trigger.
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