Black Box SW723A-R4, SW722A-R4, KV3108SA-R4, SW721A-R4, SW724A-R4 Appendix C Pinout of RS-232 Port

Page 106

APPENDIX C: Pinout of RS-232 Port

Appendix C: Pinout of RS-232 Port

The table below shows the pinout of the ServSwitch’s RJ-12 (“6-wire RJ-11”) female RS-232 port.

1 6

Pin

Signal Name

Abbrev.

Direction

Description

 

 

 

 

 

 

 

1

Data Set Ready

DSR

Input

Reserved (not used)

 

 

 

 

 

 

 

2

Data Terminal Ready

DTR

Output

Pulled high with 1-K

resistor

 

 

 

 

 

 

3

Transmit Data

TD

Output

Serial data from port

 

 

 

 

 

 

 

4

Signal Ground

SGND

N/A

DC ground reference

 

 

 

 

 

 

 

5

Receive Data

RD

Input

Serial data to port

 

 

 

 

 

 

 

6

Request to Send

RTS

Output

Pulled high with 1-K

resistor

 

 

 

 

 

 

83

Image 106
Contents Customer Support Information Step-By-Step Quick Install Guide for the ServSwitch Servswitch Quick Install Guide Attach your keyboard and mouse this way PS/2 equipment shown Connection sequence User-Station Connections PS/2 type user-station connections PC/AT type user-station connections RS/6000 type user-station connections SGI type user-station connections Cascade Connections Optional CPU Connections Servswitch Quick Install Guide PS/2 type CPU connections Servswitch Quick Install Guide PC/AT type CPU connections standard cable RS/6000 type CPU connections SGI type CPU connections RS-232 connection to DB9 male computer port FA042 Power Connection Page Copyright 2000. Black Box Corporation. All rights reserved Welcome to the ServSwitchTM Family SW721A-R4SW723A-R4 SW722A-R4SW724A-R4 KV3108SA-R4SW725A-R4Servswitch FCC/IC Statements Servswitch NOM Statement Contents Table of Contents Servswitch Appendix Specifications StandardsSpecifications Maximum Altitude Introduction Operating FeaturesComplete Package Servswitch Front panel of a 2 to 1 ServSwitch SW721A-R4 Front PanelON/OFF Rear Panel CPU NMonitor Cable Requirements Equipment RequirementsInstallation Quick Setup GuideInstallation Procedure Connecting Cpus Connecting Submasters Optional Kernel is bad, load new kernel through serial port Chapter Cascading in ServSwitch Systems Cable Requirements for Expansion Basic ServSwitch cascading Cascading with Matrix ServSwitch submasters Kernel is bad, load new kernel through serial port Installation Operation Hardware and Keyboard Commands Guidelines for Using the ServSwitch with Your EquipmentOperation Hardware and Keyboard Commands Monitor Video Quality vs. Distance for Original Serv Cables Video Quality vs. Distance for Coaxial Cables Keyboard-Command Summary ServSwitch’s Keyboard CommandsScan OFF Commands in Detail Scan Mode Reset Send Null Byte PS/2 Type Mice only Display Label Using the RS-232 Port Switching Ports Remotely Optional Upgrading the Firmware with Terminal-Emulation Software Receive successful Hit space to program Upgrading the Firmware with the DOS Copy Command Operation Hardware and Keyboard Commands Operation On-Screen Display OverviewOperation On-Screen Display Configure System Configure systemChanging the mouse type Servswitch Changing the maximum number of computers Configure System Expansion Units Configure System Scan Time Typematic Rate Configure Computers Configure computersChanging a computer’s name Changing a CPU port’s keyboard mode Changing a CPU port’s mouse type Configure Overlay Color SchemeResolution Background Color and Text Color Configure Overlay Computer Label Show Computer Number Configure Security 10. The Configure securityNew password Computer Select Window 11. The computer select windowTroubleshooting Restoring Factory-Default SettingsCommon Problems YOU CAN’T Switch Ports from the Keyboard Servswitch Scans or Switches to Empty or Nonexistent Ports Your Mouse DOESN’T Move the POINTER/CURSOR Your ON-SCREEN Display is not Synchronized Calling Black Box Shipping and PackagingAppendix a Nvram Factory Defaults Keyboard-Command SettingsOn-Screen Configuration Settings Option Default settingAccess time Seconds 16 hours, 39 minutes Appendix B Cable Product Codes Servswitch Appendix C Pinout of RS-232 Port Appendix D The LK461 Keyboard Key Pressed on Scan Code LK461 KeyboardAppendix E Rackmounting ServSwitch Figure G-1. Rackmount assemblyPage

SW725A-R4, SW722A-R4, SW723A-R4, KV3108SA-R4, SW724A-R4 specifications

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The SW721A-R4 and SW724A-R4 are primarily layer 2 switches that support essential networking protocols such as IEEE 802.1Q for VLAN tagging, ensuring secure and efficient traffic management. With robust forwarding capabilities, these switches boast high-speed Gigabit Ethernet ports, which enable seamless data transfer and reduce latency in data-driven applications. Their fanless design also ensures quiet operation, making them ideal for office settings and noise-sensitive areas.

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