RAD Data comm ASMi-31 Chapter Introduction, Overview, General, Power Supply Versions

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Chapter 1

Introduction

This chapter describes basic physical and functional features of the ASMi-31 standalone modem, as well as some typical applications. It discusses the following topics:

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An overview of the modem

Physical description

Functional description

Technical specifications.

	1.1 Overview
General	The ASMi-31 modem is a synchronous/asynchronous short-range modem
	which is managed by a remote master modem. ASMi-31 operates
	synchronously or asynchronously at full duplex over 2-wire twisted pair,
	unconditioned lines. The ASMi-31 modem has a transmission range of 8 km
	(5 miles) over 24 AWG wire and operates at user-selectable data rates from
	1.2 kbps to 128 kbps.
Versions	ASMi-31 is available in several versions:
	• ASMi-31 standalone – the standalone slave unit features a blank panel
	• ASMi-31/R– a plug-in card which may be installed in the ASM-MN-214
	hub.
	• ASMi-31C– a plug-in card which may be installed in the LRS-12 or
	LRS-24 hub (see ASMi-31C Installation and Operation Manual for details).
	Power Supply Versions
	The power supply options are:

•

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AC power source: 115 VAC or 230 VAC

DC power source: -48 VDC.

Overview 1-1

Order from: Cutter Networks

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

www.bestdatasource.com

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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 SafetyQuick Start Guide Adjust the jumpers see , Installation and SetupModem 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 ContentsOpening the ASMi-31 Case Setting the Internal Jumpers and SwitchesTo 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 CablesTo connect DC power to ASMi-31 Connecting the PowerRefer 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 DiagnosticsLoopback LLB Local AnalogTo 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 General Appendix a Ethernet InterfaceDescription DB-25 IR-ETH Connector OptionsSignal Pin DB-25 RJ-45 Ethernet Bridge SpecificationsProtocol 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 Introduction Appendix B IR-G.703 Codirectional Interface 64 kbpsGeneral 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