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Redback® A 4480B 8 In to 8 Out Audio Switcher
10
Power switch
Use this to switch to turn on mains power 220-240V AC.
11
On indicator
This led indicates the unit has power.
12
Keyboard USB input
This USB connection is for a keyboard for programming the LCD.
13
LCD
The LCD is used to indicate which inputs are selected to which outputs.
14
Inputs 1-8 volume controls
Use these to adjust the volumes of the RCA input sources.
1.5 REAR PANEL CONNECTIONS
Fig 1.5A shows the layout of the A 4480B rear panel.
1
2 3
4
ALERT - EVACUATION MODULE
Voice
Chime
Alert
Over
& Evac
Output levels
Triggers
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).
BCD & DIP SWITCH SETTINGS
DIP
DIP SWITCH
CHIME CONTACT
4
5
6
7
CH2
CH1/CANCEL
SW
ON
OFF
1
Momentary Alert
Latched Alert
OFF OFF OFF OFF
Pre Announce
Ding Dong
& Evac operation
& Evac operation
ON OFF OFF OFF
Pre Announce Repeating Bong
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
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
26
25
1-4
A 4573 Alert/Evac/Chime Module Controls
This module generates Alert and Evacuation tones for use in an emergency. Triggering of these tones and the
volume adjustment trimpots are located here. Refer to section 2.1 for more details.
5
Stereo RCA input connectors
Connect these inputs (1-8) to the input audio sources such as a CD player etc. These inputs are converted to
mono internally. Note. Inputs 1 & 2 also have a line level XLR input (Refer to section 7).
6
RCA input sensitivity DIP switches
These DIP switches are used to set the input sensitivity of the 8 auxiliary input sources. Each input can be config
ured for an input sensitivity of 0.3V or 0.7V. See fig 1.5b.
8
Redback® Proudly Made In Australia
INPUTS
Aux Input Sensitivity
R
DIP Switch Settings
SW1
ON OFF
8
7
6
(1) Input 1
0.3V 0.7V
SW2
(2) Input 2
0.3V 0.7V
L
(3) Input 3
0.3V 0.7V
1
2
3
4
(4) Input 4
0.3V 0.7V
SW2
ON OFF
8
(1) Input 5
0.3V 0.7V
(2) Input 6
0.3V 0.7V
1
2
1
2
3
(3) Input 7
0.3V 0.7V
3
(4) Input 8
0.3V 0.7V
1 - Shield
2 - Hot
3 - Cold
Manufactured in Australia By
Altronic Distributors Pty. Ltd.
www.redbackaudio.com.au
24VDC In
DC Fuse
Power Fail
Micro SD Card
16GB
Maximum
Keyboard
(4A M205)
24
23
22
21
20
5
6
2
1
5
4
3
SW1
3
1
2
3
4
7
6
5
1
2
1
2
1
2
1
3
3
3
8
7
6
5
4
ZONE PLATES OR PRESET PLATE
19
Fig 1.5a
7
8
9 10
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
(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
4
3
2
2
1
2
1
2
1
3
3
3
3
Priority Input
3
2
1
Vox
L
R
Trigger
Level
18
17
16
Fig 1.5b
www.altronics.com.au
Overview
11
12
EMERGENCY INPUT
2
1
SW5
3
1
2
3
4
2
1
3
SW5
ON
OFF
1
1
Phantom
Phantom
Power On Power O
1 - Shield
2
Mic Level
Line Level
2 - Hot
3 - Cold
Switches 3 & 4 Not Used
2
To Paging Consoles/Preset Plate
1
2
Vox
3
4
Volume
Level
(Maximum 500mA per output)
15
14
13
Aux Input Sensitivity
DIP Switch Settings
SW1
OFF ON
(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
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