This https://en.wikipedia.org/wiki/Parallel_SCSI#Comparison_table might help you narrow it down.
And, quoting Wikipedia:
Interoperability[edit <https://en.wikipedia.org/w/index.php?title=SCSI_connector&action=edit§ion=10>]There are adapters between most types of parallel SCSI connector, and some companies will manufacture custom cables to guarantee having the correct connectors. An adapter from narrow to wide must include termination to work properly.
Different SCSI standards use the same SCSI connectors as in HVD and LVD SCSI (High Voltage Differential and Low Voltage Differential) . HVD uses 15V while LVD uses 3.3V, so connecting an HVD device to an LVD host bus adaptor can blow the line drivers on the HBA, likewise an HVD HBA connected to an LVD device.
Similarly, connecting a (slow) SE single-ended device onto a (fast) LVD SCSI chain will cause the HBA to sync down to the lowest speed.
While interconnectivity of a number of devices may look straightforward, there are many pitfalls, and with older SE devices the cabling length becomes an issue as signal degrades.
-Adam
On 07/03/2015 04:17 PM, Adam Thompson wrote:
Not 100% sure either, but IIRC LVDS (and just plain differential) never had its own connector. With the advent of ... Ultra160??? everything was lvds anyway. I recall a small handful of devices that could do differential or regular based on a jumper or dip switch, over the same connector. What's the device? -Adam
On July 3, 2015 4:06:19 PM CDT, Trevor Cordes trevor@tecnopolis.ca wrote:
I have an external SCSI device that I'd like to plug in on a 10-15' cable. The device has a standard dense 50-pin 2-row connector. I thought at first that meant for sure LVD, but now I'm thinking it just means ultra. I need LVD to get over 1.5M cable length, according to spec. LVD lets me go to 12M it appears. If it's just ultra then I'm SOL, I guess. Is there a way to know what signalling this device uses based just on the connector? I checked all available interent specs, incl the original manual, for the device and *nothing* specifies anything other than "SCSI". I'm a big SCSI guy, but my memory on the subject is starting to get hazy due to disuse... ------------------------------------------------------------------------ Roundtable mailing list Roundtable@muug.mb.ca http://www.muug.mb.ca/mailman/listinfo/roundtable-- Sent from my Android device with K-9 Mail. Please excuse my brevity.
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