Alpha Microsystems Eagle 100 Specifikace stáhnout pdf (Strana 66)

APPENDIX A

SCSI TERMINATION

A.1SCSI TERMINATION USING EXTERNAL TERMINATOR OPTION

The preferred method of terminating the SCSI bus in an AMOS based computer is the

installation of an external terminator. In early April of 1993, the external SCSI bus

terminator became standard on all AMOS based computer configurations. Using an

external terminator makes the task of installing an add-on subsystem (like a portable

CD-ROM drive) easier, eliminating the necessity of removing terminators from a SCSI

device located in the host computer.

The Roadrunner hardware is sensitive in regards to SCSI bus termination. If you are

using the external terminator and one of the SCSI devices inside your computer also

has its terminators installed, you may experience problems.

The SCSI bus must be terminated at each end of the cable. The Roadrunner terminates

the SCSI bus at one end of the 50-pin interface cable. Termination at or close to the

other end of the SCSI bus is required, either via an external terminator or via a

terminator installed on (or in) the SCSI peripheral nearest the end of the bus.

External terminators are available from Alpha Micro under part number PRA-00222-00.

To use the external terminator, you need to insure none of your SCSI peripherals inside

the computer are terminated. You will also need to follow the guidelines in the section

on providing termination power for the SCSI bus.

The external terminator is shown in the following illustration:

PDI-00172-60, Rev. A02

1 2 ... 61 62 63 64 65 66 67 68 69 70 71 ... 88 89

Žádné komentáře

Alpha Microsystems Eagle 100 Specifikace Strana 66