32 Installation
2.4.10 NeXT
Manufacturer:
NeXT
Op erating System:
Mach 2.0
Cables Required
To connect the NeXT with the
DAT-Link
you will require a cable with a
high-
density 50 pin D connector
on one end and a
50 pin Centronics typeconnector
on
the other end. This may also b e called a
SCSI-1 to SCSI-2
cable. It should be
available from your NeXT hardware supplier or can be ordered from your
DAT-Link
supplier.
Cho osing a SCSI ID
SCSI ID 4 is typically free on NeXT machines for use with tape drives, or devices
suchasthe
DAT-Link
. This corresponds to the device 'st0'. If this ID is already in
use, check with a system administrator to select another ID. The SCSI ID for the
DAT-Link
can be chosen in the range 0 to 6.
9
Connecting the
DAT-Link
The next step is to connect the
DAT-Link
to the computer. Since it is necessary to
unterminate the SCSI bus temp orarily, it is recommended that you shut-down and
turn o the computer before making the connection.
Make sure the
Options
switches on the rear of the
DAT-Link
are set with all switches
down. Then connect the
DAT-Link
to the computer using the SCSI cable. If the
DAT-Link
is the last device on the SCSI bus, be sure to connect the provided SCSI
terminator between the cable and the
DAT-Link
's SCSI connector.
Once it is hooked up and powered on you can rebo ot the computer. If you have
trouble rebooting, verify that the SCSI ID selected on the
DAT-Link
was not one
that was in use. When the machine is starting up, you should see:
TCT DATLINK as st0 at sc0 target 4 lun 0
in the startup messages, assuming you are using SCSI ID 4.
9
The
DAT-Link
's SCSI ID switch go es up to 9, but the 8 and 9 settings are only for factory
testing. The NeXT itself uses SCSI ID 7
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