Redback® A 5135
Four Input MIcrophone Hub
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Redback® Proudly Made In Australia
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Redback® A 5135
Four Input MIcrophone Hub
A 5135 DIP Switch Settings
The DIP switches on the rear of the unit configure the Priority mode, the muting options and enable the Pre-announcement
Chime.
Note: The DIP switches are ON when they are in the down position.
SW1
Switch 1
is set ON to enable PTT (Push To Talk) muting and OFF to enable VOX (Voice Operated Switch) muting
Switch 2
is set ON to enable Cascade Mic Priority and OFF to enable FIBD MIc Priority
Switch 3
Not Used
Switch 4
Not Used
SW2
Switch 1
is set ON to enable the Pre-announcement Chime
Switch 2
Not Used
Switch 3
Not Used
Switch 4
Not Used
A 5138 Wall Plate
The A 5138 Wall plate shown below has a standard 5 Pin XLR connector for connection of microphones with PTT switches.
This connection is ideal for typical supermarket microphones such as Altronics C 0325 or C 0327 as shown below. The low
output level of the microphone is converted to a high level output which is fed down the Cat5 cable to the A 5135. The
output level can be adjusted by the volume control.
Microphone Cable Connections
The wiring details when connecting a balanced 5 pin XLR microphone with PTT switch to the A 5138 Microphone Preamp
Wallplate are shown below.
PIN 1 - Earth/Gnd
PIN 2 - Balanced Micrve
PIN 3 - Balanced Microphone -ve
PIN 4 - PTT Switch
PIN 5 - PTT Switch
A 5138
C 0325
C 0327
1
2
3
4
5
PTT
BALANCED
AUDIO