RAD Data comm ASM-20 Preface

Preface

Foreword

This manual provides information on the technical characteristics, installation and operating

instructions of ASM-20. The manual contains the following information:

Chapter 1. Introduction

describes ASM-20 and its applications, features, options, physical and functional

descriptions and technical specifications.

Chapter 2. Installation

describes the information required to implement the mechanical and electrical

installation of the ASM-20 standalone model, including the information for setting the

jumpers and switches.

Chapter 3. Operation

describes the controls and indicators of ASM-20 and their functions. It introduces

operation and self test procedures of ASM-20.

Chapter 4. Troubleshooting and Diagnostics

describes the procedures for performing system diagnostic tests for ASM-20.

Chapter 5. Card Cage Version

describes the card cage version of ASM-20.

Appendix A. Ethernet Interface

describes the IR-ETH for RAD modems, the different IR-ETH connector options, the

Ethernet bridge specifications, and how to install and operate an Ethernet bridge.

Appendix B. IR-G.703 Codirectional Interface (64 kbps)

describes the IR-G.703 codirectional interface (64 kbps) and the EXT and INT/RCV

modes.

Appendix C. IR-X.21B Interface Module

describes the IR-X.21B interface module, the connectors and pin assignments and the

EXT and INT/RCV modes.

Appendix D. DTE Interface Connectors

describes the interface signal list (female connectors) pins and standard signal names.

Appendix E. Connection to RS-422

describes detailed information for connecting an ASM-20 (EIA 530) to a RS-422 (V.36)

DTE.

Appendix F. Unit Case Assembly

details installation into a 19” rack.

Contents

Main ASM-20 Synchronous/Asynchronous Short Range Modem Installation and Operation Manual Notice Page Warranty Limitation of Warranty Exclusive Remedies Safety Warnings Telecommunication Safety Regulatory Information Declaration of Conformity Quick-Start Guide 1. Installing and Operating ASM-20 Preface Foreword Conventions Note Contents Page List of Figures Page Chapter 1 Introduction 1.1 Overview Applications Features 1.2 Physical Description Front Panel LEDs Jumpers Rear Panel 1.3 Functional Description Encoder Page 1.4 Technical Specifications Digital Interface Diagnostics Timing Elements Page Table 1-1 Approximate Range Page Chapter 2 Installation and Setup 2.1 Introduction 2.2 Site Preparation and Prerequisites 2.3 Package Contents 2.4 Mechanical Installation 2.5 Electrical Installation Strap Selection Setting Internal Jumpers and Switches Chapter 2. Installation and Setup ASM-20 Installation and Operation Manual * BAUD RATE Figure 2-3 PCB Layout Diagram Warning Table 2-1 ASM-20 Strap Selection Settings Table 2-1 ASM-20 Strap Selection Settings (Cont.) Table 2-2 Async Character Length Setting Power Connection Page Chapter 3 Operation 3.1 General 3.2 Controls and Indicators ASM-20 Figure 3-2 ASM-20R Front Panel Table 3-1 Control and Indicator Functions Figure 4-3 3.3 Operating Instructions Power On Procedure Page Chapter 4 Troubleshooting and Diagnostics 4.1 General 4.2 Frequently Asked Questions 4.3 Loop Tests Procedure 4.4 Bit Error Rate Tester (BERT) 4.5 Modem Self Test 4.6 Local Test - Analog Loopback 4.7 Communication Link Tests Remote Digital Loopback Local Digital Loopback Chapter 5 Card Cage Version 5.1 General 5.2 ASM-MN-214 Card Cage Page 5.4 Power Supply AC Supply (100, 115 or 230 VAC) DC Supply (-48 VDC) Page 5.5 Installation Page Appendix A Ethernet Interface A.1 General A.2 Description A.3 IR-ETH Connector Options A.4 Ethernet Bridge Specifications General LAN WAN A.5 Installation and Operation LAN Installation Switch Settings LED Indicators Table A-3 IR-ETH Bridge LED Indicators Page Appendix B IR-G.703 Codirectional Interface (64 kbps) B.1 Introduction B.2 General Description B.3 EXT Mode ASM-20 Installation and Operation Manual Appendix B. IR-G.703 Codirectional Interface (64 kbps) 6/4/99 13:17 INT/RCV Mode B-3 This mode corresponds to the modem clock working in the EXT mode. Modem A Modem B B.4 INT/RCV Mode Modem A Modem B Page Appendix C IR-X.21B Interface Module C.3 IR-X.21B Connectors Pin Assignment C.4 IR-X.21B Interface Module C.5 EXT Mode C.6 INT/RCV Mode Appendix D DTE Interface Connectors D.1. General Page Page Page Appendix E Connection to RS-422 E.1 General Table E-1 Interface List for Connecting ASM-20 (EIA 530) to RS-422 (V.36) DTE (Cont.) Appendix F Unit Case Assembly F.1 General F.2 Unit Case F.3 Installation of the Unit Case into a 19" Rack