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Introduction
1–15
SCSI-2
Bus T
ermination Guidelines
There are certain guidelines to follow when terminating a SCSI-2 bus. These guidelines
are:
CAUTION: Unless the SCSI-2 bus is properly terminated, the bus will not
operate. Terminators provide impedance matching on SCSI-2 bus
signal lines.
• The last device connected to the SCSI-2 bus must be terminated with a SCSI-2
terminator. Use a Hewlett-Packard K2291 50-pin low-density bail-lock active
terminator or a Hewlett-Packard C2904A high-density thumbscrew active
terminator to terminate the last SCSI-2 option device.
• Any termination on other devices on the bus must be removed. This includes
external termination plugged into a SCSI-2 receptacle on the device, or internal
resistor packs. (Refer to peripheral device or system configuration manuals for
termination information).