ADTRAN 2 x E1 user manual OOF Alarm, CRC Alarm, RMT 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.

OOF Alarm

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

	Recommended Action
Possible Cause	(see list below)
• The E1 signal has lost framing sync	............................................................ 1

•The line codes between the E1 equipment and the

TRACER are incompatible

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.

CRC Alarm

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


	Recommended Action
Possible Cause	(see list below)
• The incoming E1 signal is not configured for CRC4 error checking		1

Recommended Actions:

1.Turn off CRC4 detection in the E1A or E1B Status/Configuration/Loopback Menu.

RMT Alarm

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

	Recommended Action
Possible Cause	(see list below)

•The far-end equipment is in an LOS condition and

transmitting a RMT alarm

1,2,3

38	TRACER 2 x E1 User’s Manual

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Contents Tracer 2 x E1 User’s Manual 61280004L2-1C Radio Frequency Interface Statement R N I N GRadio Frequency Interference Statement Table of Contents Operation Troubleshooting Specifications Warranty, Ordering and Return InformationGlossary Appendix aIllustrations Viii Tracer Description IntroductionApplications Spread SpectrumForward Error Correction Tracer DescriptionChannel Selection Direct SequenceTracer System Configuration E1 InterfacesBaseband Processor or BBP Block diagram of the BBP is shown in Figure VT100 RS-232 InterfaceAlarm Contacts If SignalPower Controls and IndicatorsFreq Name Function Non-volatile MemoryBuilt-In Tests Radio Frequency Converter or RFC10. Front and Rear of Rackmount RFC Housing Antenna Selection Antenna 100 mWInstallation UNPACK, InspectInstallation Grounding15 Pin RJ-48 E1 InterfacesLink Planning P O R T a N TAntenna Feedline Loss Antenna GainPath Loss Path AvailabilitySetting the Transmitter Power GHZ, 1 Watt Transmitter OptionSetting the RFC Frequency Plan on NON 1 Watt 2.4 GHZ Models 4 GHz DiplexerPlan a Plan B Setting the RFC Frequency Plan on 5.8 GHZ Models 8 GHz DiplexerConnecting the BBP and the RFC Applying PowerAutomatic BBP Frequency Plan Spreading CodeCO-LOCATING Multiple Systems Antenna AlignmentRF LOW Alarm Contacts Remote BertInstallation Password OperationVT100 User Interface RS-232 InterfaceOperation Main Menu SelectionsSystem Status Screen Main Menu Screen Tracer Main MenuE1 Status / Configuration / Loopback E1A Status ScreenLink Performance History Link Performance History ScreenE1A Statistics E1B StatisticsSectionTROUBLESHOOTING4 Troubleshooting Problem Descriptions and Recommended ActionsTroubleshooting Using the Front Panel Indicators GeneralTroubleshooting CV/CRC Light on E1A or E1B is Lit when CRC is enabledRecommended Actions LBK-A or LBK-B is Lit LOS/OOF Light on E1A or E1BNo Power Light ALM is LitTest Light is Lit or Blinking TST Light is Lit After Pressing Remote Test ButtonFail Light is Lit After Pressing Remote Test Button RF Low Light is OnTroubleshooting Using the VT100 User Interface LOS AlarmCV Alarm OOF Alarm CRC AlarmRMT Alarm UA1 Alarm Code Sync Status Carrier Sync Status or E1 Mux Sync Status Possible Cause RFC Link Up StatusES Values in E1A or E1B Performance History Menu SES Values in E1A or E1B Performance History Menu Troubleshooting Specifications Specifications PowerVT100 Terminal Interface Mechanical & EnvironmentalWARRANTY, Ordering and Return WarrantySales Repairs and ReturnsWarranty, Ordering and Return Information Glossary Acronyms Used in this ManualGlossary Appendix a Cable Connections Terminal Connection DB-25Personal Computer Connection DB-9 Modem Connection DB-25Appendix a Cable Connections