www.altronics.com.au
Redback® Proudly Made In Australia
18
Redback® A 4480B
8 In to 8 Out Audio Switcher
Setup Guide
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.
Fig 4.2A
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.
Output levels
Voice Chime Alert
Over
& Evac
24VDC In
(4A M205)
Lift/Chassis
ZONE PLATES OR PRESET PLATE
Keyboard
INPUTS
SW2
SW1
8
7
6
5
4
3
2
1
SW5
ON
OFF
1 Phantom Phantom
Power On Power Off
2
Mic Level Line Level
Switches 3 & 4 Not Used
Vox
Level
Volume
Priority Input
L
R
Vox
Level
Trigger
To Paging Consoles/Preset Plate
3
4
1 2 3 4
ALERT - EVACUATION MODULE
1 2 3 4
L
R
SW3
EV
CO
M
CH1/ C
AN
CH2
AL
2
1
3
1 - Shield
2 - Hot
3 - Cold
1 - Shield
2 - Hot
3 - Cold
2
1
3
SW3 Input 1 & 2 XLR
Phantom Power Settings
SW
ON OFF
(1) Input 1
ON OFF
(2) Input 2 ON OFF
Triggers
OUTPUT
S
8
7
6
5
4
3
2
1
EMERGENCY INPUT
DC Fuse
Earth Lift
+
-
24VDC In
Power Fail
+
_
Manufactured in Australia By
Altronic Distributors Pty. Ltd.
www.redbackaudio.com.au
BCD & DIP SWITCH SETTINGS
DIP SWITCH
CHIME CONTACT
4
5
6
7
CH2
CH1/CANCEL
OFF OFF OFF OFF
Pre Announce
Ding Dong
ON OFF OFF OFF
Pre Announce Repeating Bong
OFF ON OFF OFF
Pre Announce Repeating Bing
OFF OFF ON OFF
Pre Announce
CANCEL
OFF OFF OFF ON
Ding Dong
Pre Announce
ON
ON
ON
ON
Ding Dong
Repeating Bong
OFF ON
ON
ON
Ding Dong
Repeating Bing
ON OFF ON
ON
Ding Dong
CANCEL
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
The Alert/Evacuation module has multiple chime options, a recordable
voice-over message and adjustable alert to evacuation tone switch-over times.
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).
ON
OFF
Momentary Alert
& Evac operation
Latched Alert
& Evac operation
1
2
3
4
Voice-over
message ON
Voice-over
message OFF
Not Used
Not Used
Mic recording
enabled
Mic recording
disabled
DIP
SW
1 2 3 4
SW5
1
2
(Maximum 500mA per output)
8
7
6
5
4
3
1
SW4
(Not Used)
16GB
Maximum
Micro SD Card
2
1 2
3
4
1 2
3
4
1 2
3
4
1 2
3
4
1 2
3
4
Aux Input Sensitivity
DIP Switch Settings
SW1
ON OFF
(1) Input 1 0.3V 0.7V
(2) Input 2 0.3V 0.7V
(3) Input 3 0.3V 0.7V
(4) Input 4 0.3V 0.7V
SW2
ON OFF
(1) Input 5 0.3V 0.7V
(2) Input 6 0.3V 0.7V
(3) Input 7 0.3V 0.7V
(4) Input 8 0.3V 0.7V
2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
2
1
3
Closing contact trigger.
Telephone Paging System
