Re: 370A floppy drive?


Craig
 

Dennis,.

I absolutely agree with you when discussing floppy disk interoperability between multiple types of systems, these are valid points you mention.

I apologize if I confused anyone. My comments were specific to the Tek 370 which in my experience will ONLY read and write low density disks formatted on the 370A. And if no low density disk is handy you can tape over the hole on a high density and it will format as low density at the larger track size (3.5 inch floppys are soft sector).

This was only mentioned as a practical solution for an immediate problem. I have used it hundreds of times and it works.

That being said, I would never use a floppy for long term storage, it is not a robust system. But it is the available method provided by Tek to transfer curve trace data from the 370A onto aother computer so it can be archived and included in reports. The floppy in the 370A was a great improvement that made this possible. It was fantastic when we could stop taking pictures of the CRT screen.

I close with a practical hint directly related to this discussion. I can not recomend in strong enough terms to never erase your important curves in the 370 memory until you have them safely transferred to your work computer. This will save you tons of griefe.

Craig




--------------------------------------------

On Mon, 9/8/14, 'Dennis Tillman' @Dennis_Tillman_W7pF [TekScopes] <TekScopes@...> wrote:

Subject: RE: [TekScopes] Re: 370A floppy drive?
To: TekScopes@...
Date: Monday, September 8, 2014, 5:49 PM


 









The magnetic material on the surface of a 1.44MB
floppy requires a stronger field to change domain
orientation so the write head of a 1.44MB drive generates a
stronger magnetic field. In addition the track has to be
narrower. That narrower track is harder for a 720K floppy to
read RELIABILITY.



If you format enough diskettes you will eventually encounter
issues if you mix LD and HD floppies with HD and LD drives.




The ultimate question you have to ask is do you trust
valuable data to a floppy you may not be able to read in the
future? If the data only needs to be accessible for a short
time it won't matter.



Dennis Tillman W7PF












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