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2.1

Installation Steps

The following steps are provided to assist with the installation of the PC5928 Audio Interface

module. It is suggested that you read this section briefly to get an overall understanding of

the order of installation. Once this is done carefully work through each step.

Step 1

Mounting the PC5928 Audio Interface Module

Mount the cabinet close to the control panel as it must wire to the incoming phone line.

Before attaching the cabinet to the wall make sure to press the nylon circuit board mounting

studs into the cabinet from the back.

Step 2

Wiring the Keybus

Wire the Keybus to the PC5928 Audio Interface module according to the diagram provided

in Section 2.2 "Keybus Wiring".

Step 3

Wiring the Audio Stations

Wire each audio station according to the diagram provided in Section 2.3 "Audio Station Wiring".

Step 4

Wiring the Incoming Telephone Line

Wire the incoming telephone line according to the diagram provided in Section 2.4

"Telephone Line Connection".

Step 5

Supervision of PC5928

The PC5928 will function upon power up, however full supervision of the module must be

enabled in the panel (PC5010). Follow the guideline provided in Section 2.5 "Enabling

PC5928 Supervision".

Step 6

Program the Panel

The PC5928 Audio Interface module programming can be done from any Power832 keypad.

Refer to the Audio Interface Programming Worksheets for program items and options.

Helpful Installation Tips

Feedback

If an intercom station appears to be exhibiting feedback noise, check the following for potential causes.

• Microphone - Remove the backplate. The microphone and holder are located in the bottom-left corner.

Ensure that the microphone is pushed fully into the black rubber holder so that the face of it is flat against

the rubber.

• Speaker - Ensure that the felt is secured around the speaker.

• Gain Control - Remove the backplate. The speaker volume control is located directly above the

microphone and the microphone sensitivity control is located directly beneath the speaker. Turning

either of these controls counter clockwise will reduce their gain, thereby reducing the possible level

of feedback.

• Placement - Typically, intercom stations should not be installed facing each other. Feedback may

also occur due to room acoustics which will be affected by several different factors such as the size

of the room, whether or not the floor is carpeted and different objects that may be in the room. Try

moving one of the intercom stations to correct the problem.

• Ventilation - In some extreme instances the station may be feeding back to itself. The speaker

output may be feeding back into the microphone within the housing. To eliminate this, open a hole

through the wall equal in size to the rectangular opening in the backplate to allow the sound to

escape.

Getting Started

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