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Modem Vendor Forum · DTP/Word Processing

#Which Scanner??

16 messages in this thread

#165368From: Norm MillerSep 25, 1994 7:49 PM

I am considering purchasing a flat bed color scanner and was wondering what the best one for use with the AMIGA would be. I just received an add from MiGraph for there MS1200 and MS2400 scanners and was wondering if there scanners are any better than say EPSON or CANNON flat bed 24bit scanners? Thanks, Norm M. From Connecticut >>>>On AUTOPILOT…..

#165504From: Gary Vander MeiSep 26, 1994 9:29 PM

Norm, If you are using a Amiga, I would go with MiGraph. They make the software and modify the hardware to work on the Amiga. I am using a MS2400 on one of my 3000's now. Working flawlessly so far with the A3000's SCSI port. Very friendly with the other devices on the chain. The MiGraph Color Kit Pro software is getting a upgrade at the moment. If you order now you will get v1.9. Also a ADPro loader is in the works. What machine will you be usin it with? // Gary Vander Mei on Auto-Pilot \X/

#165509From: Norm MillerSep 26, 1994 9:44 PM

Gary: I would be using it with an A4000/040. I have the DKB 4091 SCSI2 board installed. Do the MiGraph scanners have a passthrough for the SCSI? Thanks, Norm M. From Connecticut >>>>On AUTOPILOT…..

#165602From: Gary Vander MeiSep 27, 1994 3:12 PM

Norm, No they do not have a passthrough. You would have to buy a tee if you didn't want it as the last external unit. Although it does come with a terminator. If you need a tee I can get you one. Male to male centronics cable too..:) // Gary Vander Mei on Auto-Pilot \X/

#165644From: Norm MillerSep 27, 1994 10:19 PM

Gary: Thanks 🙂 The stock terminator I assume is PASSSIVE? I would have to add ACTIVE termination since I have a SCSI II type controller. Thanks Again, Norm M. From Connecticut >>>>On AUTOPILOT…..

#165666From: Don Curtis/SYSOPSep 28, 1994 1:14 AM

Norm, SCSI terminators are all passive. Resistor networks….that's all. Don

#165675From: Dale LarsonSep 28, 1994 3:59 AM

There are several kinds of active termination, including FPT (Forced Perfect Termination). Other termination schemes are being investigated for SCSI-III. SCSI-II Fast usually uses something called active termination, though I'm not sure how active it is (maybe I'll have to take apart one of those terminators one of these days…)

#165830From: Jim SakladSep 29, 1994 11:39 PM

Dale – > Other termination schemes are being investigated for SCSI-III. My dealer told me that their supplier told them that the drive they were getting me (Quantum Empire 1400) was a SCSI-III. What can you tell me about SCSI-III (differences from II, data transfer speed potential, etc.)? jsaklad@welchlink.welch.jhu.edu . . JimDoc, on AutoPilot

#165853From: Dale LarsonSep 30, 1994 5:24 AM

This doesn't sound right. My impression was that SCSI-III was in the very preliminary stages — not that there would be shipping product in the next year. Maybe I wasn't paying attention.

#166071From: Jim SakladOct 2, 1994 9:34 PM

Dale – > This doesn't sound right. My impression was that SCSI-III was in the > very preliminary stages Just reporting what I'm told. If I learn more, I'll pass it along. Any knowledge of differences between II and III ? jsaklad@welchlink.welch.jhu.edu . . JimDoc, on AutoPilot

#166114From: Dale LarsonOct 3, 1994 7:18 AM

Some, but I have even less time than knowledge. 🙂 Really, I knew something about what they were working on. I knew new termination schemes was an important feature, and I think something about autosensing configuration was in there too. But little was decided. If there is an approved standard now, I really don't know what made it.

#165736From: Norm MillerSep 28, 1994 9:02 PM

Don: I know SCSI I uses RESISTOR packs but SCSI II uses something called ACTIVE termination. I'm not sure what the terminators have in them but they are not JUST RESISTOR PACKS. Norm From Connecticut >>>>On AUTOPILOT…..

#165745From: Don Curtis/SYSOPSep 28, 1994 10:00 PM

Norm, We use SCSI II peripherals at work, the terminators are simple resistor packs. Don

#165851From: John DraperSep 30, 1994 2:05 AM

Don, SCSI II can use any of the types of termination. Passive (normal resistor packs), Active (with a little circuitry in them), and 'force perfect', which is more or less a terminator that adapts to the bus as it appears at the time. The latter two have been in use for a couple of years now. -larry

#165859From: Ed VishootSep 30, 1994 7:22 AM

Don, I'm probably way out of school here considering your experience, but the SCSI 2 terminators I've played with actually use transistors. Most obvious example was the one that comes with the CBM 4091 – it wasn't encapsulated so you could easily check out the circuitry. It appears "they" are actively monitoring/adjusting either impedance or current which is IMHO a better solution for higher performance on the buss! I also have used plain old resistor pack type termination with SCSI 2 devices with no problem, but just like under SCSI 1 operations, I'm sure it's not as effective <grin>. EdV

#165874From: Dale LarsonSep 30, 1994 11:32 AM

Passive termination is fine with SCSI-2, but make sure you aren't configured for SCSI-2 Fast (their is a jumper on the 4091 to turn it off). You might actually be slower with Fast enabled than without if using passive termination.