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

Models: 463-248-202

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System Testing

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

Contents

Installation and Use 463-248-202 Issue 3/16/93PagePac Plus AmpliCenter Ordering Information WarrantyTrademarks Support Telephone NumbersC o n t e n t s Hardware Configuration1.Overview A.FCC Statement and Warranty Information 3.Installing the Hardware4.Maintenance and Customer Support B.Feedback Form IN. IndexOverview T a b l esHardware Configuration Figures InstallingMaintenance and Customer Support the HardwareConnectivity Chart Product Safety Labels About This Guide How to Use This GuideBefore You Start Installation Steps How to Comment on this GuideAbout This Guide How to Use This GuideBefore You Start Installation Steps Connectivity Chart Table 1-1.PagePac Plus Connectivity ChartSystem Terminology Product Safety LabelsHow to Comment on This Guide Reference MaterialsINSTALLATION MANUAL Shipping Container ContentsFigure 1-2.AmpliCenter Components POWER CORDOrdering Information Features and Capabilities Figure 1-3.PagePac Plus AmpliCenterTable 1-2.AmpliCenter Specifications SpecificationsSpecifications Controls and Indicators, Terminals and Connectors Hardware ConfigurationPower Circuit ProtectionCircuit Protection PowerMounting Controls and Indicators, Terminals and Connectors Universal Approvals3.DC Power, and 70V audio out to Controller AT&T PagePac Plus Controller PEC Auxiliary EquipmentAT&T PagePac Plus Zone Expansion Unit PEC Example System Setup Installing the HardwareImportant Safety Information Connecting SpeakersImportant Safety Information Amplicenter Interface with Controller Example System SetupA traditional 70 volt installation Controller SystemCONTROLLER AmpliCenter3-4 Installing the Hardware CONNECTION NEXT APLICENTER NEXT AMPLICENTER FIRST AMPLICENTER AC POWER CONNECTION PAGINGAC POWER TO NEXTSIDE VIEW Mounting PagePac Plus AmpliCenterTools Required Figure 3-3.Wall Mounted HardwareFigure 3-4.Rack Mounted Hardware FRONT DETAILREAR DETAIL POWER STRIPSPEAKER-TO-SPEAKERMETHOD Connecting SpeakersHOME RUN METHOD Figure 3-5.Speaker Run MethodTelephone Mode Switch Telephone System Interface3-10 Installing the Hardware Connection to AmpliCenter SHIELDED CABLE Music Source InterfaceMusic Input FROM EXTERNAL MUSIC SOURCEApply AC Power System TestingAudio Paging Zones DTMF digit Common Problems Maintenance and Customer SupportPower Failure Operation TroubleshootingIn Case of Difficulty Common Problems Power Failure OperationTroubleshooting Page extension does not Table 4-1.TroubleshootingGreen power LED off answerFigure 4-1.AmpliCenter Electrical Block Digram Electrical Block DiagramMaintenance and Customer Support FCC Statement and Warranty Information FCC Statement Part Radio Frequency InterferenceWarranty Information Limited Warranty and Limitation of LiabilityInstallation and Maintenance Information FEEDBACK FORM Document Installation and Use Guide, IssueSystem PagePac Plus AmpliCenter, Release How are we doing? Page Page AT&T Issue 1, March1993 rights