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Redback® Programmable Control System
2.6 A 6507 SERIAL CONTROLLED 100V LINE ATTENUATOR CONNECTION GUIDE
Fig 2.6 shows the layout of the front of the A 6507 serial controlled 100V line attenuator.
1
DIP Switches
1 ON: Accept serial codes through RS485 input.
2 ON: Accept serial codes from Redback® A 6530 or A 6540 series wall plates.
3: Not Used
4: Must be set to OFF.
NOTE: Only one of the DIP switches 1-2 can be on at any time.
2
RJ45 interface
This RJ45 port is for connection to other Redback® compatible devices.
3
RJ45 interface
This RJ45 port is for connection to the Redback® A 6530 or A 6540 series wall plates.
4
Serial Input
This input takes an RS485 input signal. This can be connected to the RS485 serial output of the Redback® A 6505
or to a third party system. Follow standard RS485 wiring when connecting these terminals.
5
Failsafe/Normal Switch
This changes the function of the override in the attenuator circuit. When in "Normal" mode the output of the
attenuator will switch to full volume when 24V DC is applied to the Override Relay contacts. When in "Failsafe"
mode, the output is at full volume when 24V DC is removed from the Override relay contacts.
6
Override Relay Contacts
Apply 24V DC to these contacts when emergency/paging override is required. The output volume will be set to
maximum when the failsafe/normal switch is in "Normal" mode.
7
100V Out
These terminals connect to the output speaker load up to a maximum of 50 watts.
8
100V In
These terminals connect to the output of the 100V amplifier.
10
Redback® Proudly Made In Australia
1
2
3
To Other
To
Devices
A 6500
DIP
RS485
Switches
1
2
3
4
Override Relay
100V
100V
1 2 3 4
24V DC IN
OUT
IN
Failsafe
Normal
_
+
5
6
7
8
Fig 2.6
4
A
B
A 6507
Serial Attenuator
www.redbackaudio.com.au
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