Redback A 5138 Operating Manual

Four input microphone hub, microphone preamp wallplate

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Redback® A 5135 Four Input MIcrophone Hub
A 5135
Operating Manual
A 5135 Four Input Microphone Hub
A 5138 Microphone Preamp Wallplate
A 5138

Overview

The Redback® A 5135 Microphone Hub is specifically designed for small supermarket applications where industry standard
supermarket 5 pin XLR microphones are used. The Hub has provision for a background music (BGM) source using standard
dual RCA inputs. The BGM input is muted when any of the microphone inputs beomes active. A pre-announcement chime
which is DIP switch selectable is available when the PTT function is activated by a microphone connected to any A 5138
microphone wallplate.
The A 5138 wallplate accepts a 5 pin balanced XLR microphone input (such as the Altronics C 0325 or C 0327) and converts
the signal to a balanced high level output. The high level output signal is carried via Cat5e cable, (suitable for distribution up
to 300m without interference) back to the A 5135 Hub. Up to four wall plates can be connected to the one Hub with each
input configurable to either VOX or PTT muting.
Two modes of microphone priority are selectable via the DIP switches on the rear of the A 5135:
Cascade: Input 1 overrides 2-4, Input 2 overrides 3-4, Input 3 overrides 4.
FIBD: First In Best Dressed - Regardless of which input is being used, it automatically blocks out all other inputs.
A Busy LED on the A 5138 indicates when a wall plate has been overridden by another active wallplate.
The A 5135 Hub has a dedicated input for each wall plate, with front mounted volume controls for each input. Active LED's
and VOX sensitivity trimpots are available on the front of the A 5135 for each input. The pre-announcement chime and
background music (BGM) volumes are also located on the front for ease of access. A line level (1V) dual RCA output and a
balanced XLR output (line level) are included for output to an amplifier.
The Hub is powered by 24V DC from the supplied plugpack and the A 5138 wall plates receive power via the Cat5e cable
from the A 5135.
User manual revision number: 1.0 09/04/2019

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Summary of Contents for Redback A 5138

  • Page 1: Operating Manual

    The A 5138 wallplate accepts a 5 pin balanced XLR microphone input (such as the Altronics C 0325 or C 0327) and converts the signal to a balanced high level output. The high level output signal is carried via Cat5e cable, (suitable for distribution up to 300m without interference) back to the A 5135 Hub.
  • Page 2 Redback® A 5135 Four Input MIcrophone Hub – Redback® Proudly Made In Australia www.redbackaudio.com.au...
  • Page 3 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.
  • Page 4: Troubleshooting

    Vox Sensitivity 1-4: ......Front Adjust Chime Volume: ........Front Adjust All Australian made Redback products are covered by a 10 year warranty. Should a product become faulty please contact us to obtain a return authorisation number. Please ensure you have all the relevant documentation on hand.

This manual is also suitable for:

A 5135

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