Black Box SC120A-R2, SC121A manual Introduction, About the Scsi Switch, Features

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2 X 2 SCSI MATRIX SWITCH

2.Introduction

2.1About the SCSI Switch

The 2 x 2 SCSI Matrix Switch is a high-performance electronic crosspoint switch for use with the SCSI (Small Computer System Interface) bus. This product enables two independent SCSI buses to be selected and electrically connected in any combination via internal electronic switching circuits. The 2 x 2 SCSI Matrix Switch eliminates the need to swap and reconfigure SCSI cables and bus terminators when alternate system configurations are required.

In conjunction with the 2 x 2 SCSI Switch dual RS-232 serial interface, a Graphical User Interface (GUI) allows the system administrator to remotely operate and control SCSI-port configuration and termination, report SCSI-bus activity, gather performance statistics, and set internal temperature points for alarm notification. Standard DOS or modem software can also be used to control the switch using simple ASCII control commands.

Up to 32 SCSI Switches can be connected together and controlled by one serial port.

2.2 Features

Ultra2, Ultra, and Fast SCSI compatible. SC120A-R2 is also Ultra160 SCSI (a.k.a. “Ultra3 SCSI”) compatible.

80-MBps or (SC120A-R2 only) 160-MBps throughput (LVD).

Easy-to-use LCD panel.

Daisychain up to 32 switches.

Share up to 32 SCSI peripherals.

SC121A supports differential SCSI. SC120A-R2 supports single-ended or LVD SCSI.

Transparent electronic switching.

LAN port for TCP/IP-based network control, RS-232 ports for serial control.

Does not require SCSI-bus ID.

User-installable.

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Contents 2 Scsi Matrix Switch European Union Declaration of Conformity 2 Scsi Matrix Switch NOM Statement Trademarks Used in this Manual Contents 2 Scsi Matrix Switch Differential DE Scsi SC121A Only SpecificationsScsi Interface Single-Ended SE Scsi SC120A-R2 OnlyAgency Approvals Low-Voltage Differential LVD Scsi SC120A-R2 OnlySerial Interface LAN PortPhysical Introduction About the Scsi SwitchFeatures Introduction Technical DescriptionGeneral Hardware Description SC121A block diagram Typical switch installation What’s Included InstallationSwitch Placement Power Equipment OffEthernet LAN Port Cabling Scsi Interface CablingRS-232 Serial Port Cabling LCD Display, Keypad, and Indicators Operator Controls and IndicatorsAC Power Switch LCD Display Control Menus Display Ports SET Temp Limit Scsi Switch Default Configuration Scsi Switch Port ConfigurationInternal Terminator Selection Configuration and OperationScsi Cable Interface Requirements Termination configuration SC120A-R2 termination example Selecting External Terminator Power Selecting Internal Terminator PowerSerial-Port Pinout Signal Description DB9 Pin DB25 PinLAN/Serial-Port Commands Command Cmd Example Command String Response Expanded List of Commands Configuration and Operation Set Temperature Limit Graphical User Interface GUI Ascii Character Reference for Scsi Switch Box SelectionTypical Application Connecting Multiple Scsi SwitchesNetwork Control of Scsi Switch Apconcfg Utility Apconcmd Utility Scsi Basics Scsi Technical InformationScsi Technical Information Scsi Installation TipsScsi Interface Signal Descriptions Signal Name Pin Number Scsi connector assignments for Scsi connector assignments for Differential 16-bit Scsi wide Low-voltage differential LVD 16-bit Scsi wide +BSY +ACK +RST +MSG Signal Name Pin Number HVD LVD Scsi Switch component placement Shipping and Packaging TroubleshootingCalling Black Box Legal Information Copyright 2002. Black Box Corporation. All rights reserved

SC121A, SC120A-R2 specifications

The Black Box SC120A-R2 and SC121A represent the cutting edge of industrial networking devices designed for robust performance and versatility in various environments. These devices are tailored for applications that require reliable data transmission, making them essential in modern automation and control systems.

One of the standout features of the Black Box SC120A-R2 and SC121A is their advanced serial-to-Ethernet conversion capability. This functionality allows users to connect legacy serial devices to Ethernet networks seamlessly. With support for multiple protocols, including TCP/IP and UDP, these converters ensure smooth communication between devices, regardless of their original architecture.

Both models are engineered to withstand harsh industrial conditions. They feature a rugged construction that includes high-quality enclosures designed for durability and protection against dust, moisture, and extreme temperatures. This resilience makes them ideal for use in factories, transportation, and other challenging environments.

In terms of connectivity, the SC120A-R2 and SC121A come equipped with multiple serial ports, enabling simultaneous connections to various devices. The auto-sensing capability of these ports simplifies installation and configuration, making them user-friendly for both technical and non-technical personnel. Users can easily manage and monitor connections through a straightforward web-based interface.

Additionally, these devices incorporate advanced security features, including encryption and authentication protocols, ensuring that data transmission remains secure from potential threats. This focus on security is crucial for industries where sensitive data is transmitted, enhancing overall system integrity.

The SC120A-R2 and SC121A also support a range of network configurations, allowing for flexibility in deployment. Their compatibility with various operating systems ensures that users can integrate them into existing systems without significant modifications.

Moreover, these models offer flexibility in power options, supporting both PoE (Power over Ethernet) and traditional power supply methods. This versatility enables easy installation without the need for additional power infrastructure.

Overall, the Black Box SC120A-R2 and SC121A are sophisticated networking devices that combine advanced technology with rugged design. Their ability to bridge the gap between legacy serial interfaces and modern Ethernet networks, coupled with robust features and security measures, makes them a valuable asset for numerous industrial applications. Whether in a manufacturing plant or a transportation hub, these devices provide reliable, efficient, and secure communication solutions that meet the demands of today's connected world.