Using Terminators - Microtek ScanMaker IIG User Manual

Installation...

Using terminators

A terminator is a piece of electrical equipment installed at the end
of a SCSI chain to ensure that electrical impulses are properly
routed. (Note: Microtek scanners are not internally terminated,
and Microtek does not provide terminators in its scanner
packages.)
Because of varying SCSI standards, there is no way to predict with
absolute certainty whether or not you need a terminator in your
system. If you get odd symptoms after hooking up your PC and
scanner (such as communication errors during scanning), or if your
PC refuses to boot up properly after you installed the scanner, this
may indicate that you need a terminator. Terminators can be
obtained from most computer resellers.
You will definitely need a terminator if you are hooking up your
PC on a daisy chain with two or more SCSI devices through the
Adaptec AVA-1502E or any third-party ASPI SCSI card. In this
case, the terminator should be on the last SCSI device on your
daisy chain.
There should never be more than two terminators on your system.
One is usually inside the computer on the SCSI card, and one
should be outside on the last SCSI device.
Scanner
SCSI device
PC
Terminator
SCSI cable
SCSI peripheral cable
Hardware Installation 2-9