dck@cbnewsh.att.com (david.c.kwong) (05/27/89)
I have a need to plug a SCSI device with an embedded controller (that has a 50-pin Dual-in-line connector) to a SUN-3 workstation (that has a 50-pin connector on 3 rows). Does anyone know where I can find a cable with the two connectors? All the SCSI cables I have seen only has one of the two connector types, not both. Any help to order it would be appreciated. (BTW, every SCSI shoebox maker uses these cables inside their box, but they don't sell the cable alone.) Thanks in advance. D. C. Kwong att!feathers!dck (201)615-2843
chris@aivru.sheffield.ac.uk (Chris Brown) (06/14/89)
David Kwong asks in v8n9: > I have a need to plug a SCSI device with an embedded controller (that has > a 50-pin Dual-in-line connector) to a SUN-3 workstation (that has a 50-pin > connector on 3 rows). Does anyone know where I can find a cable with the > two connectors? You can easily make one. You need a 50-way male "D" type insulation displacement connector (609-50P), a 50-way female insulation displacement connector (609-5001M -- I think these are the 3M part numbers but I'm not certain) and an appropriate length of 50-way ribbon cable. Any good component distributor should be able to supply these. I could tell you where to get them in the UK, but I guess that wouldn't help. You don't need special tooling to fit them, a vice (plus a little care) is sufficient. BTW, the pinout used on the 50 way "D" socket on the back of a 3/50 or a 3/60 doesn't look at all like the standard SCSI pinout if you number the "D" socket pins in the traditional way (top row pins 1-17, middle row 18-33, bottom row 34-50), which is how they are in fact numbered on the actual connector moulding. But when you look at the numbering as seen on the ribbon cable, you *do* get standard SCSI pinout. The mapping is obvious once you think about the topology inside the IDC plug! Hope this helps, Chris Brown, A.I. Vision Research Unit, Sheffield University (chris@aivru.sheffield.ac.uk)