RAD Data comm ASM-20 operation manual List of Figures

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List of Figures

Figure 1-1 Point-to-point Application

1-1

Figure 1-2 G.703 Modem Link Application

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Figure 1-3 Tail-end for Digital Network Application

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Figure 1-4 ASM-20, General View

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Figure 1-5 ASM-20 Rear Panel with V.35 Interface

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Figure 1-6

ASM-20 Block Diagram

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Figure 2-1 ASM-20 - V.35 Rear Panel

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Figure 2-2 ASM-20 - X.21 Rear Panel

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Figure 2-3 PCB Layout Diagram

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Figure 3-1 ASM-20/SA Front Panel

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Figure 3-2 ASM-20R Front Panel

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Figure 4-1 BERT Using Loops

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Figure 4-2 Two BERTs Operating End-to-End

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Figure 4-3

Local ASM-20 in Analog Loopback

4-4

Figure 4-4

Remote ASM-20 in Digital Loopback

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Figure 4-5

Local ASM-20 in Digital Loopback

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Figure 5-1 ASM-20/R Front Panel

5-2

Figure 5-2 ASM-MN-214 Card Cage Front Panel

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Figure 5-3 ASM-MN-214 Rear Panel

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ASM-20Installation and Operation Manual

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Contents ASM-20 RAD data communications Headquarters US East US WestPage Warranty Safety Warnings Ports Safety StatusRegulatory Information Safety Supplementary InformationInstalling and Operating ASM-20 Adjust the jumpers. See , Installation and SetupQuick-Start Guide INT or EXT and the other modem RCV LBTPreface Conventions Contents Troubleshooting and Diagnostics List of Figures List of Tables Chapter Introduction OverviewApplications DTE interface Following DTE interface options are availablePhysical Description Front PanelCDD conditional diphase modulation technique Functional DescriptionAsync to Sync Converter Technical Specifications Unloaded twisted pair 19 to 26 AWGRange See Table Level Digital Interface Diagnostics Timing ElementsPower Red Bit errors Err YellowPower Supply 115 or 230 V 10% 47 to 63 Hz 5W Weight 290 gm / 10.1 ozApproximate Range Baud 19 AWG 22 AWG 24 AWG 26 AWG RateIntroduction Technical Specifications Chapter Installation and Setup IntroductionSite Preparation and Prerequisites Package Contents Mechanical InstallationElectrical Installation Strap Selection Setting Internal Jumpers Switches ASM-20 X.21 Rear PanelPCB Layout Diagram X.21, one of the modems should be set to RCV clockASM-20 Strap Selection Settings Jumper Function Possible Factory Switch Identity SettingsStart Bit Data Bits Parity Stop Bit No. of Bits Power Connection Installation and Setup Electrical Installation Controls and Indicators Chapter OperationGeneral ASM-20Control and Indicator Functions Name Type FunctionPower On Procedure Operating InstructionsActivation of Tests Operational Jumper Switch Changes Power OffProcedure Chapter Troubleshooting Diagnostics Frequently Asked QuestionsDifferences in Versions ASM-20 ASM-20-2Loop Tests Procedure Bit Error Rate Tester BertBert Using Loops Modem Self Test Local Test Analog LoopbackCommunication Link Tests Remote Digital LoopbackLocal Digital Loopback Remote ASM-20 in Digital LoopbackChapter Card Cage Version ASM-MN-214 Card CageASM-20/R Card Version ASM-MN-214 Rear PanelPower Supply AC Supply 100, 115 or 230 VAC DC Supply -48 VDCPower Supply with Redundancy ASM-MN-214 Front PanelInstallation Card Cage Version Installation Appendix a Ethernet Interface DescriptionIR-ETH Connector Options Signal Pin DB-25 RJ-45Ethernet Bridge Specifications Installation and OperationGeneral Other devices do not OptionTable A-3 IR-ETH Bridge LED Indicators Description Location Color NameAppendix A. Ethernet Interface Installation and Operation Appendix B IR-G.703 Codirectional Interface 64 kbps General DescriptionEXT Mode Figure B-2 Location of JP1 on the IR-G.703 Interface ModuleINT/RCV Mode Modem BOdem a Odem B Page Appendix C IR-X.21B Interface Module Figure C-1 Typical ASM-20 X.21 ApplicationTable C-1 IR-X.21B DB-15 RS-422 Connector Pin Assignment Interface module $87,21 25&21,18Pin Function IR-X.21B Interface Module PositionFigure C-4 EXT Mode Timing Block Appendix D DTE Interface Connectors Pin Circuit FunctionRTS Signal General 13/4/99 Signal Function RS-449 RS-422/423 EIA Pins Appendix E Connection to RS-422Pin Circuit Appendix E. Connection to RS-422 Appendix F Unit Case Assembly Installation of the Unit Case into a 19 RackInstallation of a Single Unit Unit CaseInstallation of Two Units Figure F-1 Installation of a Single UnitAppendix F. Unit Case Assembly Figure F-3 Installation of Two Units