------
Hmmm. The user manual on the 190 shows a diagram about how to connect
various SCSI devices. In the case of one SCSI external device, the
diagram shows the cable from the 190 passing through a "pass-through"
terminator to the external device. It shows an additional terminator
on the second port of the external device. There is a note stating
that if the external device has in internal terminator, the terminator
on the second port can be eliminated.


All that to be expected. Both ends of any SCSI chain need termination. Typical schemes are:

a) Iermination resistors at the device [say, CD] circuit board; you then use a single-ended ribbon cable.

b) A looping ribbon cable with 2 jacks on the ends and a center connector that plugs into the CD. The CD is actually a "spur" leg on the chain, but one that is SHORT - about an inch. {Spurs are Bad News for any transmission line...}


Doesn't really answer the question, but it seems to indicate that
the SCSI port on the 190 is not internally terminated.

My conclusion is the opposite -- there is an internal terminator at the controller since they make no mention of adding one at that end. But only a schematic would resolve the issue.



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