One scanner times eight? |
June, 03, 2003 4:22 AM |
kilajamo |
Today I connected a Microtec ScanMaker E6 to the external scsi bus of my 9650. On the same chain there are also a cd-rw and a ZIP drive. The ZIP and the cd-rw show up fine but the scanner appears eight times in the systemprofile. All have different ID numbers and SCSI LUN-0 (whatever that is) but seven of the eight scanners have SCSI LUN-1 to 7. Now when I try to scan with VueScan, which recognizes the scanner, it begins to scan eight times. I,ve put the scanner on different places in the chain, with or without active terminators and different ID numbers but with no result. The eight scanners remain. I only need one so howe can I get rid of the other seven? |
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RE: One scanner times eight? |
June, 06, 2003 3:20 PM |
mjoecups358 |
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I have seen this issue before under OS 8/9. It was always caused either by improper termination/cabling or a defective device. Vuescan works well with my old SCSI based Lintype Hell scanner as long as it is attached and powered on at boot. Firewire works great, and is much superior to SCSI for everything except for HIGH SPEED disk arrays. FW800 may make it better for this also... There are nice new USB scanners available for under $80 and FW ones for a little more... Marty |
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RE: One scanner times eight? |
June, 06, 2003 2:35 PM |
kilajamo |
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The last test was with only the scanner on a 40cm long and one cm thick scsi cable and an active terminator but zipp, nada, nothing, ???, niente, niks, ??????, nichts, rien, ??????.... So now the whole world knows. |
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RE: One scanner times eight? |
June, 06, 2003 7:59 AM |
gregoryy |
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How many meters was your external bus, and did you try with just the scanner? I've had the FW ports on my B&W go, and had to buy a FW PCI card, and the FW scanner is now fried as well. Me thinks FW is the worst invention, or never should have been used to replace SCSI - at all. I liked FW scanning as it was 4X faster than my SCSI flatbed and seemed to work fine - in OS 9. I also don't like the VueScan interface but "make do" while it seems to take years for the OS and vendors to get something working. |
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RE: One scanner times eight? |
June, 05, 2003 3:37 PM |
kilajamo |
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Thanx for the reply. Indeed VueScan is not the piece of software I hoped it would be however it could also be misled by trying to scan with eight scanners at once.... When it's doing its job it scans and scans and scans and when it gets to 360% of the job it goes on and scans and........ I do have a firewire/usb card but it is an old scanner and not worth any investment. I think I'll use my 7500 which I am not using at the moment for scanjobs until I purchased a new scanner (My dia scanner died last week so I'm looking around already. Epson 3200 seems nice) |
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RE: One scanner times eight? |
June, 05, 2003 11:44 AM |
nick.ashton |
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I forgot to mention one other possible solution for your problem. Try a Firewire-SCSI adapter (e.g. from Belkin), other people have said that this works for them. I haven't done it because adapters seem to cost about $80 which makes a new scanner more cost effective for me but if you put a high value on your Microtek scanner it might be worth the money. Of course if you haven't already got a Firewire adapter on your 9650 then that's even more expense (although well worth it in my opinion). |
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RE: One scanner times eight? |
June, 03, 2003 5:49 AM |
nick.ashton |
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I can't tell you how to get rid of the multiple occurrences but I can explain the "LUN" feature and suggest a possible workround for you. Although SCSI only supports 8 device ID's (or 16 on some variants) it also incorporates a little used feature called Logical Unit Numbers (LUNs) which allows a physical device with a single ID to make multiple logical devices available to the system. For instance Pioneer used to make a combined CD and rewriteable optical drive (not a CD-RW). This occupied a single ID on the bus but the CD would appear at LUN 0 and the MO drive would appear at LUN 1. Now for a possible solution. I tried running an Epson GT-5000 SCSI scanner under OSX on the external bus of my 8600. The scanner appeared correctly on the bus and Vuescan recognised it, but as soon as a scan was started some sort of SCSI error occured and Vuescan locked up and had to be force-quit. Just out of curiosity I borrowed an Adaptec 2910 SCSI card out of my PC and put it in the 8600. It was recognised automatically under OSX (even though it's not supposed to be Mac compatible and doesn't have OS9 drivers). When I plugged the scanner into the Adaptec card, Vuescan was able to operate it perfectly. However, due to limited slots on my 8600 I didn't want to leave the SCSI card in there so I have resigned myself to scanning under OS9 until I get a new scanner. I came to the conclusion that there is probably a bug in the driver for the external SCSI bus under OSX (AppleCurio.kext) - maybe that's also why you get 8 LUNs reported. So if you can get hold of an Adaptec 2906 or 2910 card and have a free slot then try it out. The 2906 would be preferable as that will work under OS9 also. My main gripe with Vuescan was that it is incredibly slow and seems to require inordinate amounts of VM but you can at least try it for free. |
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