At 09:39 PM -0800 02/06/2003, Terry Graham wrote:
>Dan C wrote:
>  >What's the full model number of the Micropolis?  Perhaps we can find
>>you some detailed/better info.
>
>Model 3243 - seems to me I saw 3.9 GB on screen at some point; icon 
>title maybe?
>
>Here are the two sites that are still leaving me in the dark: 
>http://www.groove-trax.de/jumper/h/txt/2544.txt
>
>http://www.thetechpage.com/cgi-bin/db/db.cgi?displayItem=884
>
>What contributes to my confusion is that, of the fourteen pairs of pins,
>2 pairs (4 pins) are missing leaving empty holes in the black jumper block.
>An actual photo would be excellent as these graph-like layouts
>don't seem to line up, numbers to names
>not to mention all the mysterious plus' and minus'.
>
>There are a couple of other two or four pin groupings elsewhere on the
>Hd's board as well.

ug. Yea, nasty ascii diagrams.  I'm not fond of them either.

Try http://www.mm.mtu.edu/drives/micropolis/new/3243Config.html


>  >Termination is needed to prevent signals from "echoing" off the end
>>of the cable.  It's the echos overlapping that cause the corruptions.
>>Sometimes, when cables are short and data rates are slow, such as on
>>an internal SCSI-1 bus, the echo is minimal so things just hum along
>>fine.  SCSI-2 isn't that tolerant tho...
>
>That sounds like the end device in a chain is the only one requiring 
>termination then; isn't that so?

Correct.

Technically, both ends must be terminated.  But since the end 
attached to the motherboard is already terminated, you can just 
ignore that one.

- Dan.

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