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Table Of Contents  CertiGuide to A+ (A+ 4 Real)
 9  Chapter 10: The Small Computer System Interface, SCSI
      9  SCSI Bus Termination

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Multimode Termination
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TermPwr (Termination Power)
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Forced Perfect Termination

This is the most complex and efficient method of SCSI termination. A cable with Forced Perfect termination can change its impedance to compensate for variations along the bus. Forced Perfect terminators force the impedance of the cable to match each device through diode switching and voltage biasing. Forced Perfect termination is seldom used now because Ultra2 and Ultra160 buses require multimode terminators. Forced Perfect terminators are more expensive than active terminators. Using active termination, high-quality cables and keeping the bus length as short as possible will improve reliabil-ity as much as Forced Perfect termination.


Previous Topic/Section
Multimode Termination
Previous Page
Pages in Current Topic/Section
1
Next Page
TermPwr (Termination Power)
Next Topic/Section

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