ADTRAN 2 x E1 user manual SectionTROUBLESHOOTING4 Troubleshooting, General

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61280004L2-1C

SECTION 4SectionTROUBLESHOOTING4 Troubleshooting

GENERAL

If you experience a problem with the TRACER system, check to ensure that all connectors, coaxial cables, antennas, and E1s are all properly connected; and that the system configuration ensures proper transmit and receive levels for the RF equipment. Then, if the problem persists, follow the actions recommended in this section. For further assistance, call ADTRAN Technical Support at

(011) 256-963-8716.

N O T E

Each TRACER is completely system-tested and all specifications verified prior to shipment. Most problems on a new link tend to have installation-related solutions.

PROBLEM DESCRIPTIONS AND RECOMMENDED ACTIONS

Each problem described below is followed by a list of Possible Causes, each of which is followed by a number (or numbers) corresponding to a Recommended Action (or Actions).

I M P O R T A N T

If problems persist after you have followed the Recommended Actions, contact ADTRAN Technical Support at (011) 256-963-8716.

Troubleshooting Using the Front Panel Indicators

 

Link Down Light is Lit

 

This alarm will activate when the RF link is not operational.

 

 

Recommended Action

Possible Cause

(see list below)

• The RF link is down

1-10

• The RX power is below the specified receiver sensitivity

1-4,7-10

• The far-end transmitter is off, or is transmitting low power

1-4,7-10

• The RF path is not aligned

1,2,10

• Water is in the antenna feedhorn or connectors

1,4

• Both units are set to the same frequency plan

5,10

• Both units are not set to the same P/N code

6

• The 1 amp 250 V fuse in the BBP is blown

8

• The connection between the BBP and the RFC is faulty

1,7-10

• The connection between the RFC and the antenna is faulty

1,7-10

• The BBP or RFC is faulty

10

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Contents Tracer 2 x E1 User’s Manual 61280004L2-1C R N I N G Radio Frequency Interface StatementRadio Frequency Interference Statement Table of Contents Operation Troubleshooting Warranty, Ordering and Return Information SpecificationsGlossary Appendix aIllustrations Viii Introduction Tracer DescriptionApplications Spread SpectrumTracer Description Forward Error CorrectionChannel Selection Direct SequenceBaseband Processor or BBP Tracer System ConfigurationE1 Interfaces VT100 RS-232 Interface Block diagram of the BBP is shown in FigureIf Signal Alarm ContactsPower Controls and IndicatorsFreq Non-volatile Memory Name FunctionRadio Frequency Converter or RFC Built-In Tests10. Front and Rear of Rackmount RFC Housing Antenna 100 mW Antenna SelectionUNPACK, Inspect InstallationGrounding InstallationE1 Interfaces 15 Pin RJ-48P O R T a N T Link PlanningAntenna Gain Antenna Feedline LossPath Availability Path LossGHZ, 1 Watt Transmitter Option Setting the Transmitter Power4 GHz Diplexer Setting the RFC Frequency Plan on NON 1 Watt 2.4 GHZ ModelsPlan a Plan B 8 GHz Diplexer Setting the RFC Frequency Plan on 5.8 GHZ ModelsApplying Power Connecting the BBP and the RFCAutomatic BBP Frequency Plan Spreading CodeRF LOW CO-LOCATING Multiple SystemsAntenna Alignment Remote Bert Alarm ContactsInstallation Operation PasswordVT100 User Interface RS-232 InterfaceSystem Status Screen OperationMain Menu Selections Tracer Main Menu Main Menu ScreenE1A Status Screen E1 Status / Configuration / LoopbackLink Performance History Screen Link Performance HistoryE1B Statistics E1A StatisticsProblem Descriptions and Recommended Actions SectionTROUBLESHOOTING4 TroubleshootingTroubleshooting Using the Front Panel Indicators GeneralRecommended Actions TroubleshootingCV/CRC Light on E1A or E1B is Lit when CRC is enabled LOS/OOF Light on E1A or E1B LBK-A or LBK-B is LitALM is Lit No Power LightTST Light is Lit After Pressing Remote Test Button Test Light is Lit or BlinkingRF Low Light is On Fail Light is Lit After Pressing Remote Test ButtonCV Alarm Troubleshooting Using the VT100 User InterfaceLOS Alarm RMT Alarm OOF AlarmCRC Alarm UA1 Alarm Code Sync Status Carrier Sync Status or E1 Mux Sync Status ES Values in E1A or E1B Performance History Menu Possible CauseRFC Link Up Status SES Values in E1A or E1B Performance History Menu Troubleshooting Specifications Power SpecificationsVT100 Terminal Interface Mechanical & EnvironmentalWarranty WARRANTY, Ordering and ReturnSales Repairs and ReturnsWarranty, Ordering and Return Information Acronyms Used in this Manual GlossaryGlossary Terminal Connection DB-25 Appendix a Cable ConnectionsPersonal Computer Connection DB-9 Modem Connection DB-25Appendix a Cable Connections
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