Adaptec APA-358 Przewodnik Instalacji Pobierz pdf (Strona 4)

APA-358A MiniSCSI-2 Installation Guide

Part Number: 510809-00, Rev. A

Print Spec Number: 493477-00

Current Date: 4/11/95 ECN Date: 4/1195

■ An LED light, which indicates whether a SCSI

device is supplying termination power (see Ter-

mination Power on page 4).

Settings

The MiniSCSI-2 has the following factory-set SCSI ID

and SCSI termination:

■ SCSI ID: 7

■ SCSI termination: Always enabled

SCSI ID

SCSI devices connect to each other in one continuous

line called the SCSI bus. To prevent communication

conflicts, each device on the SCSI bus must have a

unique SCSI ID. Allowable IDs are 0 through 7. If

two devices attempt to access the SCSI bus simulta-

neously, the SCSI ID also determines which device

has priority: The device with the higher ID has the

higher priority. The ID for the MiniSCSI-2 is fixed at

7, giving it the highest priority on the SCSI bus.

SCSI Termination

For the SCSI bus to operate properly, the SCSI devices

at both ends of the bus must be electrically terminated.

This is accomplished by installing or enabling resistors,

called terminators, on the end devices. Because the

MiniSCSI-2 is always at one end of the SCSI bus, the

terminator on the MiniSCSI-2 is enabled.

LED

Printer

Passthrough

Connector

Jack 

for AC

Adapter

Parallel Port

Connector

SCSI Connector

1 2 3 4 5 6 7 8 9 ... 13 14

Brak uwag

Adaptec APA-358 Przewodnik Instalacji Strona 4