Re: Active vs Passive SCSI Termination

Michael Schwingen (m.schwingen@stochastik.rwth-aachen.de)
Tue, 10 Dec 1996 16:21:33 +0100 (MET)

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In reply to: Maurice Hilarius: "Re: Active vs Passive SCSI Termination"

> In a general sense, active devices are clearly labelled as such, and many
> even have and LED on them to indicate they are "working". Yes they are
> powered, by the termination power provided by devices on the SCSI bus.

Just a note - there are also passive terminators with a LED to show that
TERMPWR is present, so that's no good means to determine the type of the
terminator.

The safest method is to measure the resistance between some of the SCSI
signals and TERMPWR - passive reads as some 10 Ohms, active much more.

cu
Michael

-- Michael Schwingen <m.schwingen@stochastik.rwth-aachen.de> Institut fuer Statistik und Wirtschaftsmathematik, | In the beginning there was Wuellnerstr. 3, 52056 Aachen | nothing, which exploded.

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