Quantum Audio DAT72 Manuale Utente

Installing internal tape drives

Reviewing Drive Default Settings

NOTES: You can also change SCSI IDs by connecting a SCSI address-selection switch to

pins 1 through 8.

If you change the drive’s default SCSI ID, avoid using SCSI IDs 0 and 1 (which typically are

assigned to a boot drive) and SCSI ID 7 (which typically is assigned to SCSI controllers or

host bus adapters).

Parity Checking

By default, parity checking is enabled on the internal tape drive. To disable parity checking, remove
the jumper from pins 9 and 10.

NOTE: If you disable parity checking, the drive still generates a parity bit.

Terminator Power

By default, terminator power is disabled on the internal tape drive. To enable terminator power,
place a jumper across pins 11 and 12.

NOTE: If you enable terminator power, be careful not to short the TERMPWR signal to

ground (for example, by attaching the SCSI cable upside down). If a short occurs,

terminator power to the bus is interrupted. After the short is removed, a fuse in the drive is

automatically reset, restoring terminator power.

Open

Shunted

Open

Shunted

Open

Shunted

Jumper Pins 9–10:

Pins 9-10 shunted: Enable parity checking (default)
Pins 9-10 open: Disable parity checking

Jumper Pins 11–12:

Pins 11-12 shunted: Enable terminator power
Pins 11-12 open: Disable terminator power (default)

TABLE 3.

SCSI IDs and Corresponding Jumper Settings (Continued)

SCSI ID

Jumpers

1–2

3–4

5–6

7–8