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Author Topic: Buying an A4000T? Things to look for.  (Read 18594 times)

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Offline X-rayTopic starter

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Re: Buying an A4000T? Things to look for.
« Reply #14 on: November 07, 2006, 01:08:43 PM »
Technical info about that X-ray:

The proper term for it is radiograph. That one was produced from a 35 x 43 cm film in an X-ray cassette. It then gets developed in a black and white process. That blue tint you see there is the base tint of the cellulose layer of the film.

That is one big negaitve !!

Soon I will have access to a medical-grade radiographic digitizer and I will try to digitize my films properly. I don't know anybody who has a transparency scanner at home that can handle a 35 x 43 cm negative  ;-)
 

Offline X-rayTopic starter

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Re: Buying an A4000T? Things to look for.
« Reply #15 on: November 08, 2006, 11:35:57 AM »
@ Tahoe

What revision is your disk module? Do you have a floppy converter PCB and 880k drive?
 

Offline X-rayTopic starter

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Re: Buying an A4000T? Things to look for.
« Reply #16 on: November 08, 2006, 01:08:26 PM »
@ Odin

"...I was wondering, do your colleagues find you odd in the slightest way for hauling a kingsize mobo to the hospital just to some x-ray photos of it?..."
----------------------------------------------------------

I've X-rayed and scanned all sorts of things, from archaeological relics to neanderthal fossils to weapons components to corpses (forensic reasons).

So mobos are a piece of cake old bean.
 

Offline X-rayTopic starter

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Re: Buying an A4000T? Things to look for.
« Reply #17 on: December 04, 2006, 03:07:15 PM »
@ Erol and Tahoe

Any word on the disk module revision numbers?
 

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Re: Buying an A4000T? Things to look for.
« Reply #18 on: December 04, 2006, 10:54:26 PM »
@ rkauer and mbrantley

You are most welcome.
 

Offline X-rayTopic starter

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Re: Buying an A4000T? Things to look for.
« Reply #19 on: December 05, 2006, 09:44:55 AM »
@ Hyperspeed

Ja, you can get full motion X-ray video. It's called fluoroscopy, or screening. They use that for investigations of the heart, blood vessels and gastro-intestinal tract. We even have mobile units that you can take from one operating theatre to another (these are usually used during the operation so that the surgeon can see where he is drilling for example). Those units have onboard CD or DVD drives and they can save a study as an MPG or a DICOM video file.
Of course we don't X-ray the whole dude like they did in True Lies, we just X-ray one part, and we keep the screening times as low as possible.
You can't hurt household electronics with medical X-ray units. I once did an experiment with an Amiga floppy disk where I left the disk in a screening tray for about a minute and zapped the hell out of it...but it still worked, no errors on any of the files on the disk.  
 

Offline X-rayTopic starter

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Re: Buying an A4000T? Things to look for.
« Reply #20 on: January 04, 2007, 09:04:01 PM »
Bumped because some changes were made, and because Erol and Tahoe still haven't got back to me about their disk module revision numbers  ;-)
 

Offline X-rayTopic starter

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Re: Buying an A4000T? Things to look for.
« Reply #21 on: January 14, 2007, 02:38:52 AM »
@ Hyperspeed

If the core is being revealed then the plastic cannot be impregnated with lead. Even a very thin strip of rubber that is impregnated with lead will stop the X-rays of the type used to image that board. A lead apron worn by a person has two such layers, and a glass screen at a console is the equivalent of four such layers.

The bays on the A4000T: you have two spare horizontal bays, so you can put a CD in one and a DVD in the other. I had an early SCSI CD-ROM in a vertical bay, but that one had retainers in the tray. Those seem rare these days. If you were really desperate for a third horizontal bay you could always move the floppy to a vertical bay.

 

Offline X-rayTopic starter

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Re: Buying an A4000T? Things to look for.
« Reply #22 on: January 14, 2007, 10:59:22 AM »
I don't think it is an issue. These are the drives I have run vertically:

External Zip Drive: 3 years (not enough desk space)
Toshiba SCSI CD Rom: 2 years
Quantum Fireball: 8 years
Seagate HD (original A4KT drive): 10 years
Connor HD: 2 years

I had no problems with those and they are all old units. The Connor is the only one that has given me trouble, but that was after I ran it another 2 years horizontal. It  developed errors. It still works though and it is the only drive I have that has been attached to and formatted on a MAC, PC and Amiga. It has been an external drive and an internal drive and has even been used to transfer X-rays off a medical scanner. So it got heavy use and I'll forgive it for playing up.
 

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Re: Buying an A4000T? Things to look for.
« Reply #23 on: March 03, 2007, 03:48:36 PM »
Bumped because Erol and Tahoe still haven't got back to me about their disk module revision numbers  ;-)  :rtfm:
 

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Re: Buying an A4000T? Things to look for.
« Reply #24 on: May 26, 2007, 07:08:33 PM »
Bumped because Erol and Tahoe still haven't got back to me about their disk module revision numbers, which I think I deserve  ;-)
 

Offline X-rayTopic starter

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Re: Buying an A4000T? Things to look for.
« Reply #25 on: May 26, 2007, 07:58:29 PM »
I also bought those from Vesalia. I would like a spare ports module too, but they don't have that. I'm still looking for one.
 

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Re: Buying an A4000T? Things to look for.
« Reply #26 on: January 04, 2009, 06:08:32 PM »
Sorry for late response da9000, but I don't have an X-ray of an A3000 mobo.

Oh yes, I almost forgot to make my usual request to Erol and Tahoe: I wantz yur floppy PCB serialz numberz, K THX.
 

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Re: Buying an A4000T? Things to look for.
« Reply #27 from previous page: February 18, 2010, 02:08:46 PM »
Bumped because Erol and Tahoe still haven't got back to me about the board numbers on their disk modules, and I wantz those.