Nortel Networks RTU-292 Power Requirements, Input Power Selection, Line Voltage Selection

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RTU-292 Operations Manual

2.6 POWER REQUIREMENTS

The RTU-292 is designed to operate from 115V or 230V, 47 to 63 Hz, single phase AC power source. The unit will meet all of its specifications over a voltage range of +15% from nominal. Power consumption is 20 VA typical, 50 VA maximum.

Alternatively, the unit may be operated from a (nominal) +12, +24, or +28 VDC supply. At the +12VDC setting, the unit will operate from +11 to +15VDC, and at the +24/+28 VDC setting, the unit will operate from +22 to +30 VDC. Slide switch S6 on the Main Board selects either +12 or +24/+28 VDC.

2.7 INPUT POWER SELECTION

2.7.1LINE VOLTAGE SELECTION

CAUTION

To prevent damage to the unit, check the power line voltage selection before applying power. Also be certain that the unit is connected to a grounded outlet.

As shipped from the factory, the RTU-292 is normally set for the correct line voltage in the area where it will be installed, but the voltage selection should be checked before initial operation. The number visible through the window in the line power module (located on the rear panel) indicates the nominal line voltage range in the following manner:

100 or 120 position: nominal 115V operation

220 or 240 position: nominal 230V operation

(The number will be easier to see if the clear fuse cover is slid to the left with the line cord removed.) To change the voltage selection, remove the line power cord and slide the clear plastic fuse cover to the left, exposing the fuse. Pull the small handle marked “Fuse Pull”, rotate the handle to the left and remove the fuse. With the “Fuse Pull” handle to the left, pull the voltage selector card from its slot and replace it with the desired operating voltage appearing at the top left side. Rotate the “Fuse Pull” handle back to the right and snap the fuse back into the metal clips.

The fuse should be either:

115V operation: 1 A time-delay fuse

230V operation: 1/2 A time-delay fuse

To replace a blown fuse, follow the same general procedure, except that the voltage selector card need not be removed.

2.7.2 DC INPUT POWER SELECTION

Internal slide switch S6 is used to configure the RTU-292 to accept DC power from a (nominal) +12 or +24/+28 VDC source. The +12/+28 VDC position will work with +24 VDC (nominal

JPS Communications, Inc.

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Contents JPS Communications, Inc JPS P/N Revision JulyProprietary Statement Phone 919 Fax 919Table of Contents RTU-292 Theory of Operation Front Panel Buttons and Indicators Schematic Diagrams List Of Figures List of Tables Glossary This page intentionally left blank Scope Description GeneralTelephone Interface AssembliesMain Board Power Supply Section Handset/Speaker InterfaceRadio Interface DSP ModuleEquipment and Accessories Supplied Qty Part NumberOptions Optional Equipment Not SuppliedRTU-292 Specifications Reshipment of Equipment GeneralUnpacking and Inspection FCC Part 68 Regulations Installation OverviewInstallation Considerations 1RTU-292 Factory Default Settings Feature / Function Adjustment Default SettingPower Requirements Input Power SelectionDC Input Power Selection Line Voltage SelectionSetting Telephone Send and Receive Levels Configuring the RTU-292Programming Mode Setup Parameters Recommended Phone Line Settings Factory default settings are indicated by an asteriskType of System Telephone Send/Receive LevelsVOX Hangtime VOX HangtimeVOX Sensitivity VOX SensitivityDial Mode Dial ModeTelephone Ring Volume RX Line Input ImpedanceRadio Control Mode SW1-3 Radio Control Off Disabled EnabledFull/Half Duplex SW2-8 Full/Half Duplex Off Full DuplexPassword Protection 10Password Protection11Voice Prompts Enable Voice Prompts12Local Phone Enable 14TX Level Set-up ModeInterconnect Information 13 Local Phone RingthroughTelephone Connection 15J1 TEL Line RJ-11CPin Function Radio Connection17J7 Handset RJ12C Jack Handset Connector16P1-RADIO DB-9 Male Terminal Block 18Terminal Block 6 PositionAudio Level Setup and Adjustments 19P2 RS-232 Connector DB-9 MaleSetting the Transmit Level 5 RS-232 ConnectionSetting the Receive Level 10.1.2RTU-292 Operations Manual Outline Dimensions Control and Connector Locations Location Of Internal Option Settings Internal Option Setting Details Audio Interface Wiring Diagram Interface Details Installation Checklist Installation ChecklistOptions Installation and Configuration Front Panel CONTROLS, Indicators and Connectors Speaker Volume Control Phones Volume ControlKeypad TEL Line ButtonsSpeaker Buttons Auto ANS ButtonAudible Ring Button KEY PushbuttonRear Panel Connectors 1 P1 Radio Connector4 J2 Local Phone Connector 7 P1 AC Power ConnectorOperation Operation OverviewUSE of the RTU-292 Speaker to Monitor Audio Placing a Telephone CallUsing the Handset with the Radio Connecting the Radio to the Telephone LineReceiving a Telephone Call Putting a Telephone Call on Hold8.2 Manual Phone Patch Procedure8.1 8.3 8.48.5 8.6Negative Acknowledge Error Remote KEYSelf Test Automated OperationDisconnecting Disconnect Waiting For Input QueryRadio Is Keyed Keyed Radio Is Unkeyed UnkeyedRTU-292 Adapts To The Phone Line Caller Enters The Password if enabledCaller Dials The RTU-292 Terminating a Call RTU-292 Enters the Command ModePlacing a Call in the Command Mode Dtmf Control Commands Operating the RTU-292 from the Front Panel Keypad1Standard Dtmf Operational Commands Dtmf Command Function2Programming Mode Dtmf Commands Calling Timer RTU-292 Password ProtectionInactivity Disconnect Timer Programming the Speed Dial Directory Using the RTU-292 Speed Dial FeatureUsing the Speed Dial Feature Optional 4 Wire Operation Factory ResetSpeed Dial Reset Audio BUS Arrangement Front Panel Buttons and IndicatorsMain Board Telephone Receive Circuits Telephone Interface CircuitsTelephone Send Circuits Ring Detector and Tone Ringer Radio Interface CircuitsReceiver Input Amplifier Transmitter Audio OutputDtmf Detector FSK ModemMicrophone Circuit Speaker and Headphone CircuitsAudio Delay Adaptive HybridNoise Generator Peak DetectorPower Supply AC Power SupplyDC Power Supply 8 CPUOption Interface Board Voice Prompt OptionPrompt Tone Generator Speech ProcessorLocal Phone Option Voice Prompt SoftwareInterface Circuitry DIAL/BUSY GeneratorsRS-232 Remote Control Overview Commands Sent to the RTU-2921Command Summary Audible Ring Command Null CommandAuto Answer Command Date Command Dial CommandDisconnect Command Dtmf CommandHandset Phone Command Handset Radio CommandSpeaker Phone Command Speaker Radio CommandSpeed Dial Command SD nnALL num.? CRTel-Line Phone Command Tel-Line Radio CommandTime Command Software Version CommandStatus Returned from the RTU-292 Response SummaryCall Starting Response Null ResponseAuto Answer Response Dtmf Response Dial ResponseDisconnect Response Handset Radio Response Elapsed Time ResponseHandset Phone Response Speaker Phone Response Speaker Radio ResponseTel-Line Radio Response Speed Dial ResponseTel-Line Phone Response Time/Date Response Version ResponseResponse Error Codes Response Error CodesCall Progress Responses from the RTU-292 Call Progress ResponsesPreventive Maintenance Repair or ReplacementPerformance Testing AlignmentHybrid Balance Measurement Hybrid Balance Test Set-Up Main Hybrid Test Procedure Alternate Hybrid Test Procedure VOX Sensitivity Test Set-Up VOX Test Procedure VOX Sensitivity MeasurementFault Analysis Replaceable Parts List DescriptionDescription Reference Designator RTU-292 Operations Manual Reference Designator Special Software Versions RTU-292 OptionsInstallation and Configuration Voice Prompts EnableSW1-6 Voice Prompts Off Disabled Enabled OperationVoice Prompt Option Installation Local Phone Option Installation and Configuration Local Phone EnableSW1-7 Local Phone Off Disabled Enabled SW1-8 Ringthrough Off Disabled Enabled5Local Phone Dtmf Commands Local Phone Option OperationVMM-100 Analog Interface VMM-100 HardwareVMM-100 DSP Section VMM-100 Installation and Configuration VMM-100 SoftwareVMR Algorithm Noise Reduction AlgorithmVMM-100 Option Installation VMM-100 Specifications EnvironmentalVMM-100 I/O Connector Information P9 VMM-100 Switch FunctionsDtmf Access Option After the Call Begins Squelch Break Access Option RTU-292 Prompts for ConfirmationSetting The Time Setting The DateCall Logging Option Checking The Time And DateRadio Control Option Controlling the Radio VIA the RTU-292 Front Panel Keypad9DTMF Radio Control Commands Command Followed By Command DescriptionSchematic Diagrams Blank Index Environmental Self Test Speech Processor