Alpha Microsystems SCSI Especificações descarregar pdf (Página 8)

Page 4 Installation Instructions: SCSI Disk Drives

Figure 1 shows two different types of external SCSI connectors.

1.Configuration"A" shows an extended external SCSI connector and bail

locks for holding the terminator in place. This configuration is used on

almost all of Alpha Micro’s currently available product. The terminator is

installed by sliding it over the connector and then latching the bail locks

into the notches in the terminator.

2.Configuration"B" shows a flush mounted external SCSI connector. The

only product Alpha Micro currently offers using a flush mounted external

SCSI connector is the pedestal (also known as the "Classic") chassis. In

this configuration, the terminator inserts into a cutout in the sheet metal

and over the SCSI connector. The terminator is held in place with two

#4screws and washers.

6.1Termination Procedure (Without External Terminator)

1.AM-14XX, AM-16XX, or pedestal computers with one SCSI hard disk drive

can have that hard disk drive installed with its terminators removed.

2.If an AM-14XX, AM-16XX, or pedestal computer has more than one SCSI

device, the last SCSI device, the device attached to the connector farthest

down the cable away from the CPU board must be terminated.

3.If an AM-14XX, AM-16XX, or pedestal computer includes a SCSI magnetic

tape drive as its only SCSI device, the tape drive must have its terminators

installed.

4.For AM-990, 10-slot rack mount VME, and 21-slot rack mount VME

computers, the last SCSI device attached to the connector farthest down

the cable away from the CPU board must have its terminators installed. If

only one SCSI device is installed, that device must be terminated.

5.For subsystem installations, the last SCSI device attached to the

connector farthest down the cable away from the host computer must have

its terminators installed.

AM-1000 and AM-1200 computers follow the same termination procedure used by

AM-14XX, AM-16XX, and pedestal computers.

PDI-00436-20, Rev. A15

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Alpha Microsystems SCSI Especificações Página 8