ATTO Technology ExpressPCI FC 3321, FC 3322, F Manuel d'instructions télécharger pdf (Page 11)

Cables, termination

Exhibit 3.1-2 Several types of internal and external cable connectors.

Termination

The SCSI bus is a chain of SCSI devices. The

devices at both ends of any SCSI chain must be

terminated for the SCSI bus to function correctly.

A SCSI device chain can be configured in three

different ways: internal, external and an

internal/external SCSI device chain.

The ATTO ExpressPCI SCSI adapter is a SCSI

device and may require termination depending

upon the configuration. Be sure to use the correct

terminator. Single-Ended, Low Voltage

Differential and Differential SCSI buses use

different types of terminators that should not be

mixed.

Single-Ended ATTO ExpressPCI PSC

incorporates advanced termination circuitry to

automatically configure its own termination.

Exhibit 3.1-3 Two LEDs on the top edge of the ATTO

ExpressPCI PSC/DC provide feedback on its automatic

termination setting.

You should not have to manually adjust the

termination of your adapter unless you a narrow

(8 bit) device attached to the external port

AND

wide (16 bit) device attached to the internal port

of your ATTO ExpressPCI PSC

if you

attached a narrow (8 bit) device to the internal

WIDE (16 bit) connector and a WIDE (16 bit)

device to the external port.

LED1

(Low Term)

LED 2

(High Term)

ATTO ExpressPCI-PSC

termination

On On All 16 data bits terminated

Off Off No termination

Off On Upper 8 bits terminated

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 24 25

Pas de commentaire

ATTO Technology ExpressPCI FC 3321, FC 3322, F Manuel d'instructions Page 11