Alpha Microsystems AM-212-20 Installation Instructions Manual - Page 6

Browse online or download pdf Installation Instructions Manual for Computer Hardware Alpha Microsystems AM-212-20. Alpha Microsystems AM-212-20 18 pages. Scsi 3-1/2” floppy diskette drive

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PREPARING THE AM-212-20 FOR INSTALLATION

Before installing the AM-212-20, you should make sure its configuration jumpers are set correctly.

These jumpers are found on the rear of the diskette drive, as shown in Figure 1. Specifically, you need to

set the jumpers determining the SCSI ID for the drive, and insure that the SCSI bus terminators are

removed unless the AM-212-20 is the last physical SCSI device connected to the SCSI bus and you are

not using the external SCSI terminator to terminate this SCSI bus.

DC POWER

CONNECTOR

SCSI ID 5 (SEE DETAIL)

Figure 1 - AM-212-20 SCSI Floppy Drive Jumper Configuration

The next few sections discuss SCSI IDs and SCSI bus termination.

Setting the SCSI ID

Each SCSI device attached to the SCSI bus must be set to a unique address. Two SCSI devices cannot

share the same address. The AM-212-20 is a SCSI-1 device, and can be set to any SCSI ID from 0

through 6. Figure 1 shows the standard jumper settings for SCSI ID = 5, which is the standard SCSI

address for the AM-212-20.

If you are using this device with a wide SCSI bus adapter attached to a wide SCSI bus, only SCSI

IDs 0-6 are supported for this device.

Installation Instructions: AM-212-20 3-1/2" Floppy Diskette Drive

SCSI FLOPPY DRIVE

TOP VIEW

50 PIN SCSI BUS CONNECTOR, PIN1

SCSI BUS TERMINATORS (2) REMOVED, PIN 1 INDICATED

Note: All other jumper blocks are factory

set and should NOT be moved.

SCSI ID 5

DETAIL

shorting block out = 1

shorting block in = 0

PDI-00212-20, Rev. A01