ATTO Technology 463-248-202 manual System Testing, Apply AC Power, Audio Paging Zones

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System Testing

With the zone wired and connected to the AmpliCenter, testing may begin.

CAUTION:

Be careful not to short out any audio output contacts during this procedure as the AmpliCenter may go into overload as indicated by the overload LED. A distorted or inaudible page will result.

Apply AC Power

Power to the PagePac AmpliCenter is supplied through a single power cord connected to a grounded outlet. There is no power switch.

Connect the 100-250 VAC modular connector to the back of the AmpliCenter and then to the outlet socket. Do not defeat the third wire ground circuit.

Audio Paging Zones

Use the following steps to test audio paging zone output.

1.Adjust the Low Frequency Cut-Off control. This control attenuates low frequency bass so that horns and small speakers are not over-driven and distorted by excessive bass energy. Cut-off frequency is continuously adjustable from 50Hz (full CCW rotation) to 400 Hz (full CW rotation).

2.The Page VOX sensitivity is turned fully counter-clockwise if the Dry Loop feature is not used.

3.Adjust Music Input level. Clockwise rotation will increase the level. Listen and set to a comfortable level.

4.Using a telephone from the host system, dial the paging access code. Speak into the telephone in a normal manner. Your voice should be heard from all connected speakers. The AmpliCenter Page Input has an automatic level control (ALC) which keeps loud talker’s and normal talker’s output at the same level. Beware of paging from a telephone directly under a loudspeaker; feedback howl can occur. (An anti-feedback speech processing unit or a record/playback delay unit can solve this if it will be a problem for the users.

5.Re-adjust Music Input level to the desired loudness relative to Paging loudness.

6.Some loudspeaker taps may have to be re-adjusted to get even coverage at all locations. Be sure that final speaker tap setting totals do not exceed the power rating of the AmpliCenter.

Installing the Hardware 3-13

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Contents PagePac Plus AmpliCenter Trademarks N t e n t s OverviewInstalling the Hardware Controls and Indicators, Terminals and Connectors B l esFigures Contents OverviewAbout This Guide How to Use This GuideBefore You Start Installation Steps Installation StepsConnectivity Chart PagePac Plus Connectivity ChartPagePac Plus Connectivity Chart Continuation Loop 600 ΩTerminology Product Safety LabelsHow to Comment on This Guide Reference MaterialsShipping Container Contents Ordering Information Features and Capabilities PagePac Plus AmpliCenterSpecifications AmpliCenter SpecificationsHardware Configuration Circuit Protection PowerMounting Controls and Indicators, Terminals and Connectors Universal ApprovalsControls and Indicators, Terminals and Connectors Auxiliary Equipment Installing the Hardware Important Safety Information Additional Safety Instructions for Installation PersonnelExample System Setup Amplicenter Interface with Controller AmpliCenter without Controller, with Series AmpliCentersController Series AmpliCenters, without Controller Mounting PagePac Plus AmpliCenter Tools RequiredFront Detail Connecting Speakers Speaker Run MethodTelephone Mode Switch Telephone System Interface10Installing the Hardware Connection to AmpliCenter Music Source Interface Music Input ConnectionsApply AC Power System TestingAudio Paging Zones Dtmf digit Maintenance and Customer Support Case of Difficulty Common Problems Power Failure OperationTroubleshooting Troubleshooting AnswerElectrical Block Diagram AmpliCenter Electrical Block DigramFCC Statement and Warranty Information FCC Statement Part Radio Frequency Interference2FCC Statement and Warranty Information Installation and Maintenance Information Feedback Form How are we doing? D ex FCCRack mounted hardware Diagram AT&T
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