IBM 4690 manual Conguring the SCSI Drive, Mounting the Drive, 15 and, 13 and, 1 and

Step 3. Con®guring the SCSI Drive

1.Locate the SCSI con®guration block. The SCSI con®guration block pin assignments are:

15 and 16

Enable terminator power

13 and 14

Enable termination

11 and 12 Reserved

9 and 10 Reserved

7 and 8

Enable parity

5 and 6

SCSI bit 2

3 and 4

SCSI bit 1

1 and 2

SCSI bit 0

2.Set the tape drive's SCSI ID to the ID you selected. If you need to reset the SCSI ID, refer to the following table, which contains SCSI ID Pin Assignments, for the ID jumper pin settings.

SCSI ID	Bit 2, Pin 5, 6	Bit 1 Pin 3, 4	Bit 0 Pin 1, 2
0	OFF	OFF	OFF
1	OFF	OFF	ON
2	OFF	ON	OFF
3	OFF	ON	ON
4	ON	OFF	OFF
5	ON	OFF	ON
6	ON	ON	OFF
7	ON	ON	ON

3.If the tape drive is the last device on the SCSI bus, it must be terminated. If you need to terminate the device, place a jumper over pins 13 and 14 to enable termination. The tape drive is shipped with enable termination OFF.

4.Normally, the SCSI bus adapter supplies terminator power. Therefore, the tape drive is shipped with enable terminator power OFF. If you need to enable terminator power, place the jumper over pins 15 and 16.

5.The parity is set to ON, enable parity, as the default (jumper over pins 7 and 8). To disable parity, set the jumper to OFF.

Step 4. Mounting the Drive

1.Locate an available bay or space in your Store Controller to mount the tape drive. The drive can be mounted in either a horizontal or vertical position. The drive ®ts in a 3.5-inch (1-inch high) standard bay. When mounted horizontally, the tape drive should be oriented so that the activity light is on the top left corner of the tape opening when looking at the tape drive from the front.

8TR-4 Tape Drive User's Guide