Audio Authority Series 1500 Installation Manual download pdf (Page 8)

Audio Authority Series 1500 Installation Manual

Testing

Check the following locations for successful power-up and connectivity, indicated as follows:

• 1500 Counter Station: All LEDs become dark until keys are pressed

• 1510 Hub System Card: Flashing Green LED

• 1520 Lane Station: Flashing Green LED

Check system operation by selecting each lane and speaking with an assistant at the customer position. Adjust

Lane Microphone and Speaker gains using the Model 1550 Field Setup LCD.

Troubleshooting

Acoustical Coupling

Usually results from the lane speaker and microphone being too close together. This condition could cause

feedback prior to reaching a suf cient volume level. To cure this problem, move them farther apart (at least 18

inches) or put the speaker in a separate enclosure and/or aim it in a different direction. If these solutions do not

correct the problem, reduce the open loop gain.

Operators Hear Their Own Voices

A natural result of the full duplex audio process. If this is objectionable, reducing the open loop gain a little will

help.

The Deal Drawer Sounds Bad

Can be caused by poor acoustic treatment in the deal drawer or acoustic coupling from the customer side to the

teller side. Both of these conditions may be helped by adding foam rubber blocks or sheets to the hollow cavities

in the deal drawer.

Lane Microphone Doesn’t Work

Could be caused by using the wrong kind of microphone (it must be electret condenser) or the polarity being

reversed.

Wind Noise

Can often be eliminated by putting a small plug of 3M Scotchbrite™ in the microphone opening. The Audio

Authority lane microphone has a special foam surround; for optimum results, use Audio Authority microphones

and speakers.

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Audio Authority Series 1500 Installation Manual Page 8