What is NTDS?

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3 total messages Started by John Koper Tue, 01 Sep 1992 19:28

#165

Author: John Koper
Date: Tue, 01 Sep 1992 19:28

10 lines
830 bytes

Can anyone give me a brief description of NTDS?  I belive
it's some kind of protocol used in the military and I think
it stands for "Navy Tactical Data Standard"?  I tried archie
but had no luck finding anything.

thanks in advance,
-----------------------------------------------------------------------------
John Koper				| jrk@tcs.com
Software Engineer			| 2121 Allston Way, Berkeley, CA 94704
Teknekron Communications Systems, Inc.	| (510) 649-3592

Re: What is NTDS?

#166

Author: Art Berggreen
Date: Tue, 01 Sep 1992 21:06

24 lines
1491 bytes

In article <1992Sep1.192843.7951@tcsi.com> jrk@nittany.tcs.com (John Koper) writes:
>Can anyone give me a brief description of NTDS?  I belive
>it's some kind of protocol used in the military and I think
>it stands for "Navy Tactical Data Standard"?  I tried archie
>but had no luck finding anything.

In the dim, gray past, I designed a couple of NTDS interfaces.
I even still have the spec: MIL-STD-1397(SHIPS)  1973

NTDS was (is?) basically a parallel data channel for military computers.
Although a serial version was defined, I never saw one.

NTDS channels are very similar to the "Word Channels" on older UNIVAC machines.
I don't know if UNIVAC drove NTDS specs or vice versa.

Basically the interface was full duplex with several data lines and a
data ready control.  The receiver would accept the data and toggle a
data accepted control line.

There were also several variants for the electrical interface
(NTDS-slow -15V, NTDS-fast -3V, NTDS-anew +3.5V).

Hope this helps,
Art

Re: What is NTDS?

#167

Author: Mike Tarrani
Date: Wed, 02 Sep 1992 01:58

17 lines
1241 bytes

In article <1992Sep1.192843.7951@tcsi.com> jrk@nittany.tcs.com (John Koper) writes:
>Can anyone give me a brief description of NTDS?  I belive
>it's some kind of protocol used in the military and I think
>it stands for "Navy Tactical Data Standard"?  I tried archie
>but had no luck finding anything.
>
>thanks in advance,
>-----------------------------------------------------------------------------
>John Koper				| jrk@tcs.com
>Software Engineer			| 2121 Allston Way, Berkeley, CA 94704
>Teknekron Communications Systems, Inc.	| (510) 649-3592

NTDS stands for Naval Tactical Data System -- one of the reasons that
you won't find much information is that it is classified.  The
communications links, such as Link 11 and Link 14, are also not
going to turn up from an archie search .  Want more [non-classified]
information email me.

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