Polaroid SprintScan 45 manual Positioning the scanner, SCSI guidelines

Positioning the scanner

	Place the scanner on a flat, stable surface, free of vibration.
	Leave at least 2 inches (50mm) of space around all sides and
	the top of the scanner for adequate ventilation, and leave
	room at the back to reach the power switch on the rear panel.
	Caution: As with any highly sensitive optical equipment,
	vibrations or bumping the scanner during use may result in
	picture defects. Locate the unit where it will not be disturbed
	during use.
SCSI guidelines
About SCSI chains	The SCSI system uses special cables and termination to achieve
	communication between the computer and peripheral devices.
	To function properly, the combined length of the entire cable
	system must not exceed 19 1/2 feet (6 meters) and must include
	the appropriate number of terminators. Termination maintains
	the clarity of the SCSI signal along the chain of devices. A
	SCSI chain must always be terminated at both ends. Incorrect
	termination can permanently damage the computer, scanner,
	or any other device along the SCSI chain. Refer to the following
	guidelines and diagrams for more information.
Termination	The SCSI chain must be terminated at both ends of the chain.
	The beginning of the chain is typically the computer. Most
	Macintosh computers include a hard disk which is internally
	terminated. (If your computer does not include an internally-
	terminated hard disk, you must place an external terminator
	on the first device after the computer, between the device and
	the SCSI cable to the computer.)
	Intermediate devices in the chain should not be terminated. If
	you have an internally-terminated device, place it at the end of
	the chain. (Check the manual for the device to determine if it
	is internally terminated or not.) If none of your devices are
	internally terminated, place an external terminator on the last
	device.

Setup and use 2-3