Black Box SC120A-R2, SC121A manual Hvd Lvd

Page 49

2 X 2 SCSI MATRIX SWITCH

Table 6-4. SCSI distance/device support.

STA Term

Maximum Bus Length (M)

Maximum Devices

 

SE

HVD

LVD

 

 

 

 

 

 

SCSI-1

6

25

8

 

 

 

 

 

Fast SCSI

6

25

8

 

 

 

 

 

Fast Wide SCSI

6

25

16

 

 

 

 

 

Ultra SCSI

1.5

25

8

 

 

 

 

 

Ultra SCSI

3

4

 

 

 

 

 

Wide Ultra SCSI

25

16

 

 

 

 

 

Wide Ultra SCSI

1.5

8

 

 

 

 

 

Wide Ultra SCSI

3

4

 

 

 

 

 

Ultra2 SCSI

N/A

25

25

2

 

 

 

 

 

Ultra2 SCSI

N/A

12

12

8

 

 

 

 

 

Wide Ultra2 SCSI

N/A

25

25

2

 

 

 

 

 

Wide Ultra2 SCSI

N/A

12

12

16

 

 

 

 

 

48

Image 49 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 Scsi Interface SpecificationsSingle-Ended SE Scsi SC120A-R2 Only Differential DE Scsi SC121A OnlySerial Interface Low-Voltage Differential LVD Scsi SC120A-R2 OnlyLAN Port Agency ApprovalsPhysical Features About the Scsi SwitchIntroduction Introduction Technical DescriptionGeneral Hardware Description SC121A block diagram Typical switch installation Switch Placement InstallationPower Equipment Off What’s IncludedRS-232 Serial Port Cabling Scsi Interface CablingEthernet LAN Port Cabling AC Power Switch Operator Controls and IndicatorsLCD Display, Keypad, and Indicators LCD Display Control Menus Display Ports SET Temp Limit Scsi Switch Default Configuration Scsi Switch Port ConfigurationScsi Cable Interface Requirements Configuration and OperationInternal Terminator Selection 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 Calling Black Box TroubleshootingShipping and Packaging Legal Information Copyright 2002. Black Box Corporation. All rights reserved