Sun Microsystems Interface Adapter manual RS-232 to RS-449 Connections

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RS-232 to RS-449 Connections

In order to connect RS-232 devices to the adapter, you need to install an externally powered RS-449 to RS-232 interface converter to each DB-37 connector on which you intend to connect an RS-232 device. A converter is necessary because of incompatibilities between RS-232 and RS-449 signal levels.

To obtain an externally powered RS-232 to RS-449 interface converter, contact:

Black Box Corporation at:

http://www.blackbox.com

Note – Use only externally powered RS-449 devices with the SunHSI/U adapter.

Chapter 2 SunHSI/U Adapter Installation 7

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Contents Sun Microsystems, Inc Please Recycle Contents Cable Pin Assignments & Signals SunVTS Diagnostic Testing Page Figures Page Tables Page FCC Class a Notice Regulatory Compliance StatementsICES-003 Class B Notice Avis NMB-003, Classe B CCC Class a Notice Page Declaration of Conformity Page How This Book Is Organized PrefaceShell Prompts Using Unix CommandsRelated Documentation Typographic ConventionsDocumentation, Support, and Training Third-Party Web SitesSun Welcomes Your Comments Product Description Product OverviewSunHSI/U Adapter Features1Hardware and Software Requirements Hardware and Software RequirementsPage SunHSI/U Adapter Installation Installation ProcessTo Install the Adapter External Cabling RS-232 to RS-449 Connections Page Installation Overview SunHSI PCI Software Installation1SunHSI PCI Software Directories and Files Before Installing the Software Verifying the Software and Hardware RequirementsTo Remove Older Versions of the Software To Install the SunHSI Software Installing the SoftwareAt the ok prompt, type the boot command with the -roption To Test the Installation Configuring the SoftwareTo Configure for Point-to-Point Protocol Edit the /etc/netmasks file as follows Hsipinit Utility SunHSI UtilitiesOperating Modes Options T1 Compatibility OptionsHdlc Mode Hsiploop Utility Hsipstat Utility Page Pin Assignments Cable Pin Assignments & SignalsDCD1A Appendix a Cable Pin Assignments & Signals RTS4A RS-449 Interface Signals Interface SignalsPage Null Modem Cable Requirements Building the Null Modem Cable Configuring Internal or External ClockingRS-449 Null Modem Cable RS-449 SignalsPage Appendix B Null Modem Cable Requirements Figure B-3X.21 to RS-449 Converter To RS-449 ConverterData Signal Inversion T1 Inverted Data and Clock SignalsHdlc Zero Insertion Algorithm Bipolar with 8-Zero SubstitutionClock Signal Inversion Page Using the SunVTS sunlink Test SunVTS Diagnostic TestingPage Viewing the Man Pages Man PagesTo View Man Pages in the C Shell Environment Make the changes effective in your current window To View Man Pages in Bourne or Korn Shell EnvironmentsGlossary Page Index