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Telex MCE325 manual

Models: MCE325

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Figure 1.8 Multiple interconnected stations using one four-wire intercom channel and two two-wire channels for IFB’s.

Figure 1.8 Multiple interconnected stations using one four-wire intercom channel and two two-wire channels for IFB’s.

Figure 1.9 A four-channel, two-wire configuration with two channels used for IFB’s (shown with TELCO interface).

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Telex MCE325 8 Multiple interconnected stations using one four-wireintercom channel and two two-wirechannels for IFB’s

Contents

PROGRAMMABLE USER STATION MODEL MCE325USER INSTRUCTIONS PROPRIETARY NOTICE WARRANTY INFORMATIONCOPYRIGHT NOTICE UNPACKING AND INSPECTIONRETURN SHIPPING INSTRUCTIONS End-UserLicense Agreement for Telex Software Installation TABLE OF CONTENTSDescription & Specifications Operation MaintenanceDiagrams Parts ListsPage Features DESCRIPTION & SPECIFICATIONSDescription GeneralVolume Controls Front Panel FeaturesConnections, Inputs and Outputs Channel Selector and Operation ButtonsExternal Program Input Rear Panel FeaturesIntercom Lines Mounting Configuration PowerAuxiliary Connector ProgrammingPower and Mechanical MCE325 SpecificationsMicrophone Preamplifier Headphone AmplifierConnectors MCS325 SpecificationsFigure 1.3 Standard four-channel, two-wireconfiguration 1-8 M C E 3 2 5 U s e r I n s t r u c t i o n s Figure 1.8 Multiple interconnected stations using one four-wireintercom channel and two two-wirechannels for IFB’s 1-10 M C E 3 2 5 U s e r I n s t r u c t i o n s Figure 1.11 MCE325 button configurations 1-12 M C E 3 2 5 U s e r I n s t r u c t i o n s Internal Programming and Adjustments INSTALLATIONGeneral S E C T I O NSwitch Function Switch NumberDefault Setting Figure 2.1 Top cover removalDefault Setting Table 2.2 Jumper functions and default settingsJumper Number Jumper Function2-4 C S I - 2 0 0 U s e r I n s t r u c t i o n s ISO DS5 Front Panel Setup Mode Lock-outDS4Remote Talk-offDS7 VOX DS8Headphone Sidetone Trimmer Adjustment R37 Mechanical InstallationSpeaker Dim Adjustment R157 Program Assignment - IFB Option J4, J5, J16-J18Figure 2.3 Mounting configurations AC Power and Fuse Electrical InstallationConnector Pin-outs Four-wireOutput TerminationFour-WireChannel A and B Input Auxiliary Connector, J22Program Inputs, J14 and J15 External Speaker, J27Key outputs - Expanded IFB Option Remote Microphone SwitchISO Connection External HeadsetUnswitched Microphone Output Front Panel Headset ConnectionsExternal DC Power Source External Electret MicrophoneSECTION Table 2.9 Carbon-microphoneheadset connectorFUNCTION Carbon microphoneOPERATION LED IndicatorsGeneral Operating InstructionsFront Panel Sidetone Nulling Trimmer Adjustment Volume AdjustmentPanel Mic/Headset Mic Selection Microphone On/OffUsing the Talk-OffFeature Sending and Receiving Call SignalsActivating Setup Mode Menu Selection/Ending SetupLatch Disable Call DisableChannel ID Four-channelListenInstant Mic Reset3-6 C S I - 2 0 0 U s e r I n s t r u c t i o n s Preventive Maintenance MAINTENANCECorrective Maintenance AccessCleaning Test and Adjustment ProceduresPower Supply Test Test EquipmentKeying Output Test Initial ConfigurationFrequency Response and Level Check, Mic to Line Four-Channel, Two-WireModeTwo-Channel, Four-WireMode Sidetone Null Test and AdjustmentTrue Sidetone Adjust Program A to Left Headphone Program B to Right Headphone IFB TestProgram to Speaker IFB BIFB A Four-WireA Input to Left HeadphoneFour-WireB input to Right Headphone Carbon Mic to Channel Test Panel Mic to Channel TestVOX Test Mic Kill Receive TestCall Receive Test Mic Kill Transmit TestCall Transmit Test ISO Test Remote Mic Switch TestProgram Lockout Test Noise Checks15Turn all buttons off Page Packaging Assembly PARTS LISTSFinal Assembly, MCE325 S E C T I O NTable 5.3 Reference AS6261 Drawing, Section Front Panel AssemblyItem No DescriptionHeatsink Assembly Back Panel AssemblyMain PC Board Assembly Item NoC104 Capacitor, EL, 10µF Capacitor, Mylar, 1nF Diode, 1N4004 Transistor, 2N5210 R170 R267 Resistor, CF, 22K Ohm, 5%, 1/8W IC, Dual Low-noise Op-Amp,NE5532N Table 5.7 Reference AS6246 Drawing, Section PC Board Assembly, Front PanelRef No DescriptionPage S E C T I O N DIAGRAMS6-2 C S I - 2 0 0 U s e r I n s t r u c t i o n s Time 05 20 45 PM Date 7/23/01Title D \TEMP\AS6246 01B.cal Date 7/23/01 Title D \TEMP\AS6245 01D.calTime 05 27 24 PM Date 7/23/01 Title D \TEMP\AS6261 01C.calTime 05 21 25 PM Date 7/23/01 Title D \TEMP\AS6262 01C.calTime 05 22 16 PM Title C \home\cms\benedil\view\9020-6324 01.DWG Date 7/19/01Time 02 05 07 PM Date 7/23/01 Title D \TEMP\AS6464 01G.dwgTime 05 23 05 PM Date 7/23/01 Title D \TEMP\BD6464 01A.calTime 05 23 33 PM Date 7/23/01 Title D \TEMP\IS6718 01A.calTime 05 24 13 PM Date 7/23/01 Title D \TEMP\OD6355 01A.calTime 05 24 51 PM Date 7/23/01 Title D \TEMP\OD6355 02A.calTime 05 25 30 PM Date 7/23/01 Title D \TEMP\OD6355 03A.calTime 05 26 07 PM Date 7/23/01 Title D \TEMP\OD6355 04A.calTime 05 26 42 PM Date 7/23/01 Title c \home\cms\benedil\view\9000-6464 01.CALTime 05 03 09 PM MOTHERBOARD SCHEMATIC DIAGRAMMCE325 90276245019027624501 MOTHER BOARDMCE325 Title9027624501 MOTHER BOARD MCE325Title DWG. NODate 7/23/01 Title D \TEMP\SD6246 01A.calTime 05 19 08 PM