RAD Data comm ASM-20 operation manual RAD data communications Headquarters US East US West

Page 1

ASM-20

Synchronous/Asynchronous Short Range Modem

Installation and Operation Manual

Notice

This manual contains information that is proprietary to RAD Data Communications. No part of this publication may be reproduced in any form whatsoever without prior written approval by RAD Data Communications.

No representation or warranties for fitness for any purpose other than what is specifically mentioned in this manual is made either by RAD Data Communications or its agents.

For further information contact RAD Data Communications at the address below or contact your local distributor.

RAD data communications	RAD data communications	RAD data communications
Headquarters	US East	US West
12 Hanechoshet Street	900 Corporate Drive	3631 South Harbor Boulevard
Tel Aviv 69710 Israel	Mahwah, NJ 07430 USA	Suite 250
Tel: 972-3-6458181	Tel: (201) 529-1100	Santa Ana, CA 92704
Fax: 972-3-6498250	Fax: (201) 529-5777	Tel: (714) 850-0555
E-mail: rad@rad.co.il	E-mail: market@radusa.com	Fax: (714) 850-1555

© 1999 RAD Data Communications

Publication No. 601-200-04/99

Image 1

Contents RAD data communications Headquarters US East US West ASM-20Page Warranty Ports Safety Status Safety WarningsRegulatory Information Supplementary Information SafetyAdjust the jumpers. See , Installation and Setup Installing and Operating ASM-20Quick-Start Guide INT or EXT and the other modem RCV LBTPreface Conventions Contents Troubleshooting and Diagnostics List of Figures List of Tables Overview Chapter IntroductionApplications Following DTE interface options are available DTE interfaceFront Panel Physical DescriptionFunctional Description CDD conditional diphase modulation techniqueAsync to Sync Converter Unloaded twisted pair 19 to 26 AWG Technical SpecificationsRange See Table Level Timing Elements Digital Interface DiagnosticsRed Bit errors Err Yellow PowerPower Supply 115 or 230 V 10% 47 to 63 Hz 5W Weight 290 gm / 10.1 ozBaud 19 AWG 22 AWG 24 AWG 26 AWG Rate Approximate RangeIntroduction Technical Specifications Introduction Chapter Installation and SetupSite Preparation and Prerequisites Mechanical Installation Package ContentsElectrical Installation ASM-20 X.21 Rear Panel Strap Selection Setting Internal Jumpers SwitchesX.21, one of the modems should be set to RCV clock PCB Layout DiagramJumper Function Possible Factory Switch Identity Settings ASM-20 Strap Selection SettingsStart Bit Data Bits Parity Stop Bit No. of Bits Power Connection Installation and Setup Electrical Installation Chapter Operation Controls and IndicatorsGeneral ASM-20Name Type Function Control and Indicator FunctionsOperating Instructions Power On ProcedurePower Off Activation of Tests Operational Jumper Switch ChangesProcedure Frequently Asked Questions Chapter Troubleshooting DiagnosticsDifferences in Versions ASM-20 ASM-20-2Bit Error Rate Tester Bert Loop Tests ProcedureBert Using Loops Local Test Analog Loopback Modem Self TestRemote Digital Loopback Communication Link TestsRemote ASM-20 in Digital Loopback Local Digital LoopbackASM-MN-214 Card Cage Chapter Card Cage VersionASM-MN-214 Rear Panel ASM-20/R Card VersionAC Supply 100, 115 or 230 VAC DC Supply -48 VDC Power SupplyASM-MN-214 Front Panel Power Supply with RedundancyInstallation Card Cage Version Installation Description Appendix a Ethernet InterfaceSignal Pin DB-25 RJ-45 IR-ETH Connector OptionsInstallation and Operation Ethernet Bridge SpecificationsGeneral Option Other devices do notDescription Location Color Name Table A-3 IR-ETH Bridge LED IndicatorsAppendix A. Ethernet Interface Installation and Operation General Description Appendix B IR-G.703 Codirectional Interface 64 kbpsFigure B-2 Location of JP1 on the IR-G.703 Interface Module EXT ModeModem B INT/RCV ModeOdem a Odem B Page Figure C-1 Typical ASM-20 X.21 Application Appendix C IR-X.21B Interface ModuleInterface module $87,21 25&21,18 Table C-1 IR-X.21B DB-15 RS-422 Connector Pin AssignmentPin Function Position IR-X.21B Interface ModuleFigure C-4 EXT Mode Timing Block Pin Circuit Function Appendix D DTE Interface ConnectorsRTS Signal General 13/4/99 Appendix E Connection to RS-422 Signal Function RS-449 RS-422/423 EIA PinsPin Circuit Appendix E. Connection to RS-422 Installation of the Unit Case into a 19 Rack Appendix F Unit Case AssemblyInstallation of a Single Unit Unit CaseFigure F-1 Installation of a Single Unit Installation of Two UnitsAppendix F. Unit Case Assembly Figure F-3 Installation of Two Units