Important information about the scsi interface – Nikon LS-10 Installation Guide for Macintosh User Manual
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The SCSI Interface
Chapter 3
2. Remove SCSI termination from the last device in the SCSI chain.
3. Remove the SCSI cable currently in use from the Macintosh’s SCSI connector on
the motherboard, and the other end from the SCSI device.
4. Connect one end of the supplied 3-connector flat SCSI cable to the SCSI connec
tor on the Macintosh’s motherboard.
5. Connect the middle connector of the supplied SCSI cable to the SCSI connector
of the neighboring, now middle, SCSI device.
6. Insert the unused end of the SCSI cable into the SCSI connector on the back of
Coolscan.
7. Since Coolscan is now at the end of the SCSI chain it must terminated. Refer to
the section “Terminating the LS-10” for the proper DIP switch setting. Because the
Macintosh 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 be installed on the last device in the
SCSI chain, as opposed to Coolscan. Don’t forget. Quadra systems should have no ter
mination on any internal device when using the Apple internal SCSI cable. If the LS-10
is the last device in the SCSI chain, then DIP switch #4 should be set to the termination
ON position.
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 standard
ized 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
Macintosh.
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.
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Nikon
Coolscan Installation Guide for Macintosh