Technical information

26Chapter 2 — Installing the scanner
Your Macintosh always occupies ID 7 and its internal hard disk
usually ID 0 or ID 1. CD-ROM usually occupies ID 3. If your
Macintosh is equipped with 2 SCSI-busses (internal and external),
the button Next Bus allows you to switch busses.
3. Write down any SCSI ID number that is free.
Your Horizon Ultra scanner is preset to ID 2. If this number is free
you do not need to alter the SCSI ID switch on the rear of the
scanner.
4. Click OK to quit the SCSI ID Checker.
5. Set the scanner to the SCSI ID number that you have written
down.
For more information, see ‘Changing the SCSI ID number’ earlier
in this chapter.
Connecting the scanner
Before you connect the scanner to your Apple Macintosh, make sure
that your scanner as well as your Macintosh and everything
connected to it are switched off.
We assume that you already have several SCSI devices. If your
Horizon Ultra scanner would happen to be your first and only SCSI
peripheral, you have to buy a System 25-pin to 50-pin SCSI cable to
be able to connect the scanner to your Apple Macintosh.
Figure 2-2
SCSI Table