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Step 3. Configuring the SCSI Drive
1. Locate the SCSI configuration block. The SCSI configuration 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
7ON 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 fits 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.
8 TR-4 Tape Drive User’s Guide