Nikon LS-1000 User Manual page 22

If the unit is the only connected SCSI device, or if the unit is
connected at the end of the SCSI chain, attach a terminator
(terminal resistance) to the other SCSI connector. At this point,
remove the terminator of the other SCSI device that has been
placed between them. The terminator is not needed when the
unit is connected between other SCSI devices.
Terminator
When SCSI devices are connected, connect them so as not to
make a loop, and attach terminators to both ends of the SCSI
chain. Since the terminator is built into the host computer in
most cases, the host computer should be at the end of the SCSI
chain. The operation manuals of some notebook computers
require a terminator to be attached outside the computer;
please refer to the operation manual for the computer to which
the unit is connected.
Note: The SCSI cable used for SCSI connection should be of high-
impedance type.
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