Manuals
/
RAD Data comm
/
Computer Equipment
/
Modem
RAD Data comm
ASM-20
operation manual
Installation and Setup Electrical Installation
Models:
ASM-20
1
31
71
71
Download
71 pages
55.28 Kb
28
29
30
31
32
33
34
35
<
>
Specs
Install
FAQ
PCB Layout Diagram
Signal Pin DB-25 RJ-45
Red Bit errors Err Yellow
Controls and Indicators
Warranty
Digital Interface Diagnostics
Appendix F Unit Case Assembly
Page 31
Image 31
Chapter 2. Installation and Setup
ASM-20
Installation and Operation Manual
2-8
Electrical Installation
Page 30
Page 32
Page 31
Image 31
Page 30
Page 32
Contents
RAD data communications Headquarters US East US West
ASM-20
Page
Warranty
Ports Safety Status
Safety Warnings
Regulatory Information
Supplementary Information
Safety
INT or EXT and the other modem RCV LBT
Installing and Operating ASM-20
Adjust the jumpers. See , Installation and Setup
Quick-Start Guide
Preface
Conventions
Contents
Troubleshooting and Diagnostics
List of Figures
List of Tables
Overview
Chapter Introduction
Applications
Following DTE interface options are available
DTE interface
Front Panel
Physical Description
Functional Description
CDD conditional diphase modulation technique
Async to Sync Converter
Unloaded twisted pair 19 to 26 AWG
Technical Specifications
Range See Table Level
Timing Elements
Digital Interface Diagnostics
Weight 290 gm / 10.1 oz
Power
Red Bit errors Err Yellow
Power Supply 115 or 230 V 10% 47 to 63 Hz 5W
Baud 19 AWG 22 AWG 24 AWG 26 AWG Rate
Approximate Range
Introduction Technical Specifications
Introduction
Chapter Installation and Setup
Site Preparation and Prerequisites
Mechanical Installation
Package Contents
Electrical Installation
ASM-20 X.21 Rear Panel
Strap Selection Setting Internal Jumpers Switches
X.21, one of the modems should be set to RCV clock
PCB Layout Diagram
Jumper Function Possible Factory Switch Identity Settings
ASM-20 Strap Selection Settings
Start Bit Data Bits Parity Stop Bit No. of Bits
Power Connection
Installation and Setup Electrical Installation
ASM-20
Controls and Indicators
Chapter Operation
General
Name Type Function
Control and Indicator Functions
Operating Instructions
Power On Procedure
Power Off
Activation of Tests Operational Jumper Switch Changes
Procedure
ASM-20 ASM-20-2
Chapter Troubleshooting Diagnostics
Frequently Asked Questions
Differences in Versions
Bit Error Rate Tester Bert
Loop Tests Procedure
Bert Using Loops
Local Test Analog Loopback
Modem Self Test
Remote Digital Loopback
Communication Link Tests
Remote ASM-20 in Digital Loopback
Local Digital Loopback
ASM-MN-214 Card Cage
Chapter Card Cage Version
ASM-MN-214 Rear Panel
ASM-20/R Card Version
AC Supply 100, 115 or 230 VAC DC Supply -48 VDC
Power Supply
ASM-MN-214 Front Panel
Power Supply with Redundancy
Installation
Card Cage Version Installation
Description
Appendix a Ethernet Interface
Signal Pin DB-25 RJ-45
IR-ETH Connector Options
Installation and Operation
Ethernet Bridge Specifications
General
Option
Other devices do not
Description Location Color Name
Table A-3 IR-ETH Bridge LED Indicators
Appendix A. Ethernet Interface Installation and Operation
General Description
Appendix B IR-G.703 Codirectional Interface 64 kbps
Figure B-2 Location of JP1 on the IR-G.703 Interface Module
EXT Mode
Modem B
INT/RCV Mode
Odem a Odem B
Page
Figure C-1 Typical ASM-20 X.21 Application
Appendix C IR-X.21B Interface Module
Interface module $87,21 25&21,18
Table C-1 IR-X.21B DB-15 RS-422 Connector Pin Assignment
Pin Function
Position
IR-X.21B Interface Module
Figure C-4 EXT Mode Timing Block
Pin Circuit Function
Appendix D DTE Interface Connectors
RTS
Signal
General 13/4/99
Appendix E Connection to RS-422
Signal Function RS-449 RS-422/423 EIA Pins
Pin Circuit
Appendix E. Connection to RS-422
Unit Case
Appendix F Unit Case Assembly
Installation of the Unit Case into a 19 Rack
Installation of a Single Unit
Figure F-1 Installation of a Single Unit
Installation of Two Units
Appendix F. Unit Case Assembly
Figure F-3 Installation of Two Units
