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4.0 Rear Panel Guide
The layout of the A 4574 front panel is shown below in figure 2.
www.redbackaudio.com.au
Manufactured in Australia
By Altronic Distributors Pty. Ltd.
24V
24V
DC IN
DC In
_
+
-
+
Interface
1
2
3
1
24V DC input
Connects to a 24V DC Plugpack with 2.1mm Jack.
2
24V DC Input (Backup)
Connects to a 24V DC backup supply with at least 1 amp current capacity. (Please observe the polarity)
3
RJ45 interface
This RJ45 port is for connection to future peripherals.
4
Dip Switches
These are used to select various options. Refer to DIP Switch Settings section 7.0.
5
Contacts
These contacts are for remote triggering of the Alert, Evac, Bell and cancel functions. These could be triggered by
a remote switch or any other closing contact.
6
24V DC Switched Outputs (Limited to 120mA current draw)
Switched 24V Out
This is a common 24V DC output which is activated when any of the Bell, Alert or Evac tones are triggered. The
terminals provided can be used for "Normal" or "Failsafe" modes (see section 8.0 for more details).
Evac 24V Out
This is a 24V DC output which is activated when the Evac tone is activated. The terminals provided can be used
for "Normal" or "Failsafe" modes (see section 8.0 for more details).
Alert 24V Out
This is a 24V DC output which is activated when the Alert tone is activated. The terminals provided can be used
for "Normal" or "Failsafe" modes (see section 8.0 for more details).
Bell 24V Out
This is a 24V DC output which is activated when the Bell tone is activated. The
terminals provided can be used for "Normal" or "Failsafe" modes (see section 8.0 for more details).
7
Alert/Evac Volume
Adjust this trimpot to adjust the Alert and Evacuation tones playback volume.
8
Bell Volume
Adjust this trimpot to adjust the Bell playback volume.
9
Voice-over Volume
Adjust this trimpot to adjust the message playback volume.
10
Audio Out RCA Connectors
Connect these outputs to the input of the PA amplifier.
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Redback® A 4574 Alert/Evac/Chime Tone Generator
Redback® A 4574 Alert/Evac/Chime Tone Generator
DIP
SW
OFF
ON
Switch
Continuous operation
Momentary operation
1
of Alert & Evac contacts
of Alert & Evac contacts
Settings
2
Bell - Plays Once after
Bell - Repeatedly plays until
Activation
Cancel Activated
3
Not Used
4
Not Used
Contacts
Evac
Alert
Cancel
DIP Switches
1
2
3
4
5
6
7
8
1 2 3 4 5 6 7 8
4
5
SW
AUTO ALERT TO EVAC SWITCHOVER TIMER SETTINGS. 0 = OFF. 1 = ON.
5
0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1
6
0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1
7
0
0 0 0 1 1 1 1
0 0 0 0 1 1 1 1
8
0
0 0 0 0 0 0 0 1 1 1 1 1 1 1 1
Delay
(Sec.)
24V Outputs
(Outputs limited to 120mA)
Bell
Switched
Evac
Alert
6
Fig 2.
Redback® Proudly Made In Australia
Volume
Bell
Alert/
Bell
Voice
Audio
Evac
Over
Out
7
8 9
10
L
R
3
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