Black Box SW487A-R2 manual Hvd Lvd

Page 46

CHAPTER 6: SCSI Technical Information

Table 6-4. SCSI speed support map.

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

 

 

 

 

 

45

Image 46
Contents 4 Electronic Scsi Switch RADIO-FREQUENCY Interference Statements 4 Electronic Scsi Switch NOM Statement Trademarks Used in this Manual Contents 4 Electronic Scsi Switch Single-Ended SE Scsi SW487A-R2 Only SpecificationsScsi Interface Differential DE Scsi SW485A OnlyLAN Port Low-Voltage Differential LVD Scsi SW487A-R2 OnlySerial Interface Agency ApprovalsPhysical Features About the Scsi SwitchIntroduction Technical Description IntroductionGeneral Hardware Description Electronic Scsi Switch block diagram Typical switch installation Power Equipment Off InstallationSwitch Placement What’s IncludedRS-232 Serial Port Cabling Scsi Interface CablingEthernet LAN Port Cabling AC Power Switch Operator Controls and IndicatorsLCD Display, Keypad, and Indicators Indicators LCD Display Control Menus SET Serial Ports Display BUS Activity Scsi Switch Port Configuration Scsi Switch Default ConfigurationScsi Cable Interface Requirements Configuration and OperationInternal Terminator Selection Selecting Internal Terminator Power Selecting External Terminator PowerSignal Description DB9 Pin DB25 Pin Serial-Port PinoutLAN/Serial-Port Commands Command Cmd Example Command String Response Expanded List of Commands 4 Electronic Scsi Switch Set Temperature Limit Ascii Character Reference for Scsi Switch Box Selection Graphical User Interface GUIConnecting Multiple Scsi Switches Rackmount InstallationTypical Applications Sample applicationsNetwork Control of Scsi Switch Apconcfg Utility Apconcmd Utility Scsi Technical Information Scsi BasicsScsi Installation Tips Scsi Technical InformationScsi Interface Signal Descriptions Signal Name Signal Signal Connector Name Name Pin Number HVD LVD Scsi Switch component placement Calling Black Box TroubleshootingShipping and Packaging Disclaimers and Notices Copyright 2002. Black Box Corporation. All rights reserved