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Telex MCE325 manual Installation, Internal Programming and Adjustments, General, S E C T I O N

Models: MCE325

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INSTALLATION

S E C T I O N

INSTALLATION

Internal Programming and Adjustments

WARNING

Hazardous voltages exist inside this equipment. Disconnect the AC line cord before opening the equipment or attempting any internal programming or adjusting.

General

Prior to installing the MCE325, it may be necessary to change some of the internal programming to suit your particular application. Table 2.1 and Table 2.2 list the functions for the DIP switches and jumpers which are used for internal programming. Also shown are the default settings that were pre-programmed at the factory.

If your application requires settings that are different from the defaults, you will have to remove the top cover of the unit (see Figure 2.1) and make the required changes. If you do change the internal programming, it may be useful to note the changes for future reference.

The locations of the DIP switches and jumpers are illustrated in Figure 2.2. DIP switch programming is accomplished by setting switches to the “off” or “on” positions. Jumper programming is accomplished using shorting jumpers. By inserting the jumpers to short the appropriate pins, a function is either assigned or not assigned. Pin 1 of each jumper is indicated by a square symbol in Figure 2.2 for reference when making changes. Also shown in Figure 2.2 are trimmers for adjusting the sidetone and speaker dimming levels. Usage of the DIP switches, jumpers, and level trimmers is described in the following paragraphs.

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Telex MCE325 manual Installation, Internal Programming and Adjustments, General, S E C T I O N

Contents

MODEL MCE325 USER INSTRUCTIONSPROGRAMMABLE USER STATION PROPRIETARY NOTICE WARRANTY INFORMATIONCOPYRIGHT NOTICE UNPACKING AND INSPECTIONRETURN SHIPPING INSTRUCTIONS End-UserLicense Agreement for Telex Software TABLE OF CONTENTS Description & SpecificationsInstallation Operation MaintenanceDiagrams Parts ListsPage Features DESCRIPTION & SPECIFICATIONSDescription GeneralVolume Controls Front Panel FeaturesConnections, Inputs and Outputs Channel Selector and Operation ButtonsRear Panel Features Intercom LinesExternal Program Input 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 BFour-WireA Input to Left Headphone Four-WireB input to Right HeadphoneIFB A Carbon Mic to Channel Test Panel Mic to Channel TestVOX Test Mic Kill Receive TestMic Kill Transmit Test Call Transmit TestCall Receive 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 Date 7/23/01 Title D \TEMP\AS6246 01B.calTime 05 20 45 PM Title D \TEMP\AS6245 01D.cal Time 05 27 24 PMDate 7/23/01 Title D \TEMP\AS6261 01C.cal Time 05 21 25 PMDate 7/23/01 Title D \TEMP\AS6262 01C.cal Time 05 22 16 PMDate 7/23/01 Date 7/19/01 Time 02 05 07 PMTitle C \home\cms\benedil\view\9020-6324 01.DWG Title D \TEMP\AS6464 01G.dwg Time 05 23 05 PMDate 7/23/01 Title D \TEMP\BD6464 01A.cal Time 05 23 33 PMDate 7/23/01 Title D \TEMP\IS6718 01A.cal Time 05 24 13 PMDate 7/23/01 Title D \TEMP\OD6355 01A.cal Time 05 24 51 PMDate 7/23/01 Title D \TEMP\OD6355 02A.cal Time 05 25 30 PMDate 7/23/01 Title D \TEMP\OD6355 03A.cal Time 05 26 07 PMDate 7/23/01 Title D \TEMP\OD6355 04A.cal Time 05 26 42 PMDate 7/23/01 Title c \home\cms\benedil\view\9000-6464 01.CAL Time 05 03 09 PMDate 7/23/01 MOTHERBOARD SCHEMATIC DIAGRAMMCE325 90276245019027624501 MOTHER BOARDMCE325 Title9027624501 MOTHER BOARD MCE325Title DWG. NOTitle D \TEMP\SD6246 01A.cal Time 05 19 08 PMDate 7/23/01