MADR - Applications

Calling Through Loudspeaker with Answer at Called Speaker

Figure 1.1 Calling Through Loudspeaker with Answer at Called Speaker

Feature Description

The AlphaCom can distribute audio through separate loudspeakers with the possibility of answering at the called speaker. When loudspeakers without amplification are used, there must not be more than 20 such loudspeakers in one system.

Equipment List

• AlphaCom System with desired station range.
• Additional loudspeakers.
• Power Distribution Board PDB 1009970100.
• Microphone Amplifier Board Dynamic with Relay MADR 1009960100.

In particularly noisy environments, the MADR board should be placed close to the loudspeaker. A MRBD board is then connected between the RCO output and the MADR board input. A local supply of 24 V to the relay on the MADR is needed.

• PC with AlphaPro program and cable for connection to the AlphaCom exchange.

Installation

Installing the Power Distribution Board

• See PDB - Power Distribution Board

If a PDB board is already installed, you need not switch off the entire exchange. Just unplug the connector on the PDB board supplying power from the exchange.

Caution
Do not extend power cables from the PDB outside the exchange rack environment. 
Use local power for remote installation of equipment.

Installing the Microphone Amplifier Board MADR

• Fasten the MADR board onto one of the mounting rails on the distribution field.
• Supply the board with 24 V and 0 V (GND) from the Power Distribution Board.
• Connect the wires according to Figure 15-6 Calling through loudspeaker with answer in called speaker
• Set the switches in the correct positions.
• After the programming has been done, adjust the sensitivity of the microphone on the MADR board

Calling Through Loudspeaker with Answer in Separate Microphone

Figure 2.1 Calling Through Loudspeaker with Answer in Separate Microphone

Feature Description

The AlphaCom can distribute audio through loudspeakers with the possibility to answer in the separate electret or dynamic microphones. When loudspeakers without amplification are used, there must not be more than 20 such loudspeakers in one system.

Equipment List

• AlphaCom System with desired station range.
• Additional loudspeakers and dynamic /electret microphones
• Microphone Amplifier Board Dynamic with Relay MADR 1009960100.

Installation

Installing the Power Distribution Board

• See PDB - Power Distribution Board

If a PDB board is already installed, you need not switch off the entire exchange. Just unplug the connector on the PDB board supplying power from the exchange.

Caution
Do not extend power cables from the PDB outside the exchange rack environment. 
Use local power for remote installation of equipment.

Installing the Microphone Amplifier Board MADR

• Place the MADR board near the microphone.
• Connect the wires according to Figure 2.1.
• Set the switches in the correct positions.
• Adjust the sensitivity of the microphone on the MADR board.

It is possible to place the MADR board on one of the mounting rails in the connection field of the exchange. Then you must run a screened cable from the microphone to the MADR board and run the GND wire to exchange GND on the Subscriber connection board.

Additional Information

• No programming in necessary to use this application. We do however recommend that you program the physical connection for the PA system as a substation.

Amplified Calling Through Loudspeaker without Answer Option

Figure 3.1 Amplified Calling Through Loudspeaker without Answer Option

Feature Description

You use a loudspeaker for voice distribution of incoming calls. You may also choose to have distribution of group calls and audio programs through the loudspeaker. Additional indication of incoming calls may be connected.

Equipment List

• AlphaCom System with desired station range
• Additional loudspeakers
• Filter Board with Speech Adapter FBSAR 10099505000
• Power Distribution Board PDB 1009970100
• Power Amplifier WK1000614100
• Mounting box
• Local power supply for the Power Amplifier
• PC with AlphaPro program and cable for connection to the AlphaCom exchange

Installation

Installing the Power Distribution Board

• See PDB - Power Distribution Board

If a PDB board is already installed, you need not switch off the entire exchange. Just unplug the connector on the PDB board supplying power from the exchange.

CAUTION
Do not extend power cables from the PDB outside the exchange rack environment. 
Use local power for remote installation of equipment.

Installing the FBSAR board

• Fasten the FBSAR board onto one of the mounting rails on the distribution field.
• Supply the board with 24 V and 0 V (GND) from the Power Distribution Board. Use an 1-pair ordinary installation cable for this purpose. The cable is not supplied with the board.
• Run the wires according to Figure 3.1 Amplified Calling through loudspeaker without answer option. Audio and RCO output connections are done from the Subscriber Connection board.
• Make sure the switches are in the correct positions.

Installing the Power Amplifier

• Mount the board in a mounting box near the amplified loudspeaker
• Install a local power supply
• Connect the cables according to Figure 3.1 Amplified Calling through loudspeaker without answer option