Nikon LS-10 Installation Guide for Windows - Manual (Page 43)

The SCSI Interface Chapter 3
chapter for the proper DIP switch setting. Because the PC is at the other end of the
chain, it also must be terminated.
It is equally possible to configure the SCSI chain with Coolscan in the center of
the chain. In this case, the SCSI terminator would reside on the last device in the SCSI
chain, as opposed to Coolscan.
Important Information
About the SCSI Interface
There are several advantages and limitations to the SCSI interface which you
should be aware of:
1. It is a standardized interface.
The SCSI-1 ASPI 3.1 interface was standardized in 1986. This has made possible
the use of any single SCSI-1 standard device with any computer system that supports
the SCSI-1 interface standard, such as the PC.
Advantages: • Because of the vast array of competing third-party developers,
SCSI hardware is relatively inexpensive and plentiful. • SCSI-based software is well
defined and widely supported.
Limitations: • Although the SCSI-1 interface itself is standardized, the computer-
to-SCSI interface is not. Consequently, each SCSI controller may have its own comput­
er interface. • Different SCSI devices cannot necessarily be controlled with the same
host code. Therefore, there are times when it is best to use provided SCSI controllers
for different SCSI devices instead of chaining the SCSI devices.
2. It is a multi-device interface.
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As noted throughout this chapter, the SCSI interface can support up to eight
independent SCSI devices, including the host.
Advantages: • Ability to daisy chain multiple devices off of one SCSI controller to
the computer. • Allows easy system expandability.
Limitations: • Not all SCSI devices can work together on the same SCSI bus. •
Some SCSI devices will not operate correctly if daisy chained in a particular order. This
may require that you experiment with the order of the devices in the daisy chain. •
Some SCSI devices are internally-terminated at the factory. This may require that you
or a qualified technician remove this termination if the device is to be placed in the mid­
dle of a SCSI chain. • When daisy chaining many SCSI devices together, the total
Nikon
Coolscan Installation Guide for Windows