ADTRAN 2 x E1 user manual Troubleshooting Using the VT100 User Interface, LOS Alarm, CV Alarm

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61280004L2-1C

Section 4 Troubleshooting

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 VT100 User Interface

This section provides information for troubleshooting the Alarm Menu on the VT100 user interface. The conditions present in the Alarm Menu are software indications and should match the front panel LED indications.

LOS Alarm

The LOS alarm is indicated on the E1A or E1B Status/Configuration/Loopback page. This alarm is the same as an LOS alarm on the front panel.

	Recommended Action
Possible Cause		(see list below)
•	No E1 signal or a degraded E1 signal is present at the E1 input.	............ 1,2
•	The connection at the E1 input or E1 equipment is faulty	2

Recommended Actions:

1.Verify the presence of an E1 signal at the E1 monitor jack using an E1 test set.

2.Verify that all cables and connectors are correctly wired.

CV Alarm

The CV alarm is indicated on the E1A or E1B Status/Configuration/Loopback page.

	Recommended Action
Possible Cause	(see list below)
• The incoming E1 contains CVs or errors.	................................................... 1

•The line codes between the E1 equipment and the

TRACER are incompatible

2

Recommended Actions:

1.Check the incoming E1 signal for CVs using an E1 test set.

2.Correct the line code on the TRACER or E1 equipment.

TRACER 2 x E1 User’s Manual

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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 Appendix a SpecificationsWarranty, Ordering and Return Information GlossaryIllustrations Viii Spread Spectrum Tracer DescriptionIntroduction ApplicationsDirect Sequence Forward Error CorrectionTracer Description Channel SelectionBaseband Processor or BBP Tracer System ConfigurationE1 Interfaces VT100 RS-232 Interface Block diagram of the BBP is shown in FigureControls and Indicators Alarm ContactsIf Signal PowerFreq 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 ModelsSpreading Code Connecting the BBP and the RFCApplying Power Automatic BBP Frequency PlanRF LOW CO-LOCATING Multiple SystemsAntenna Alignment Remote Bert Alarm ContactsInstallation RS-232 Interface PasswordOperation VT100 User 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 StatisticsGeneral SectionTROUBLESHOOTING4 TroubleshootingProblem Descriptions and Recommended Actions Troubleshooting Using the Front Panel IndicatorsRecommended 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 Mechanical & Environmental SpecificationsPower VT100 Terminal InterfaceRepairs and Returns WARRANTY, Ordering and ReturnWarranty SalesWarranty, Ordering and Return Information Acronyms Used in this Manual GlossaryGlossary Modem Connection DB-25 Appendix a Cable ConnectionsTerminal Connection DB-25 Personal Computer Connection DB-9Appendix a Cable Connections