RAD Data comm ASMi-31 operation manual Chapter Troubleshooting and Diagnostics, Diagnostic Tests

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Chapter 4

Troubleshooting and Diagnostics

This chapter describes how to perform diagnostics tests on ASMi-31. The function of diagnostic tests on ASMi-31 is to:

Check that the system is operating normally

Isolate faulty equipment or cables

Identify other sources of system malfunction.

Tests are activated via the corresponding DTE pins and monitored via the ASMi-31 front-panel LED indicators.

4.1 Diagnostic Tests

The diagnostic capabilities of the ASMi-31 modem allow rapid checkout of the DTEs, the ASMi-31 modem, and connecting lines. The test will immediately verify the operational performance of each unit in the system or provide an indication of equipment failure.

Before testing the operation of the data system equipment and 2-wire line circuits, first ensure that all units are powered on and configured normally, then perform the test steps described below, in order.

ASMi-31 supports two types of loopback tests for evaluating the operation of the data system equipment and line circuits. Using these loopbacks, you can test the communication between the attached equipment, internal circuitry of the local ASMi-31 and the remote ASMi-31.

Diagnostic Tests

4-1

Order from: Cutter Networks

Ph:727-398-5252/Fax:727-397-9610

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Contents RAD Data Communications Headquarters US East US West ASMi-31Order from Cutter Networks Ph727-398-5252/Fax727-397-9610 Warranty Ports Safety Status Safety WarningsRegulatory Information Supplementary Information SafetyAdjust the jumpers see , Installation and Setup Quick Start GuideModem as INT or EXT, and the second modem as RCV Quick Start Guide Contents Card Cage Version List of Figures List of Tables Chapter Introduction Power Supply VersionsOverview GeneralControl Signal Transfers Wire twisted pair unconditioned linesDiagnostics InterfacesFunctional Description Physical DescriptionDiagnostic ConfigurationsRemote ManagementTypes ITU V.24/RS-232, V.35, RS-530 or Technical SpecificationsCodirectional 64 kbps Ethernet 10BT, Ethernet 10B2 BNCExternal clock The master clock uses Master ClockClock derived from the digital interface to Data to the lineEnvironment PhysicalIntroduction Technical Specifications Power Chapter Installation and SetupSite Requirements and Prerequisites AmbientInstallation and Setup Package ContentsSetting the Internal Jumpers and Switches Opening the ASMi-31 CaseTo open the ASMi-31 case Jumper Description Values Default Setting ASMi-31 PCB Layout ASMi-31 Internal Jumpers and SwitchesLLB, JP15 Item Jumper Description Values Default Setting Connecting the LineClosing the ASMi-31 Case To close the ASMi-31 caseDTE Interface Connector Description RAD Cable Connecting the DTETo connect the line DTE Interfaces and Matching Adapter CablesConnecting the Power To connect DC power to ASMi-31Refer to DC Power Connection Supplement DCD LED is equivalent to Indication signal Controls and IndicatorsFront Panel Controls and Indicators Chapter OperationOperating Instructions ASMi-31 Controls and Indicators Normal OperationTurning ASMi-31 Normal LEDsOff Operation Operating Instructions Diagnostic Tests Chapter Troubleshooting and DiagnosticsLocal Analog Loopback LLBTo perform the Local Analog Loopback test To activate the Remote Digital Loopback Remote LoopbackTests and Diagnostics Diagnostic Tests ASM-MN-214 Card Cage Chapter Card Cage VersionASM-MN-214 Rear Panel ASMi-31/R Front Panel ASMi-31/R Card VersionASM-MN-214 Front Panel Power SupplyTo install the ASMi-31/R card in the ASM-MN-214 card cage Installing ASMi-31/RASM-MN-214 card cage has no power switch. Operation starts Applying power, first connect the plug of the power cord toCard Cage Version Installing ASMi-31/R Appendix a Ethernet Interface GeneralDescription DB-25 IR-ETH Connector OptionsEthernet Bridge Specifications Signal Pin DB-25 RJ-45Protocol Figure A-5 Ethernet Bridge Layout UTP Option Installation and OperationSwitch Settings LAN InstallationLED Indicators Table A-2 DIP Switches SettingsAppendix A. Ethernet Interface Installation and Operation Appendix B IR-G.703 Codirectional Interface 64 kbps IntroductionGeneral Description Terminal Block RJ-45 DB-25 Standalone Rack Version EXT ModeModem a INT/RCV ModeOrder from Cutter Networks Ph727-398-5252/Fax727-397-9610 Appendix C Interface Module X.21 ConnectorsTable C-1 Table C-1shows the X.21 DB-15 pin assignmentAppendix C. X.21 Interface Module Figure C-5 INT/RCV Mode Timing Block Figure C-4 EXT Mode Timing BlockTable D-1 Appendix D DTE Interface ConnectorsTable D-1 DTE Interface Signal Assignments Unassigned pins according to X.21 standard Table D-1 DTE Interface Signal Assignments Connecting RS-530 to RS-422 Appendix E Connecting RS-530 to RS-422Table E-1 Connecting RS-530 to RS-422Installation of the ASMi-31 Unit in 19 Rack Appendix F Installation in 19 RackGeneral Installation of a Single Unit To install a single unitRack see Figure F-2 Figure F-1 Installation of a Single UnitTo install two units Figure F-2 Installation of Two UnitsFigure F-3 Fastening Two Units Together