Question: IS a Null Modem Cable the same as a Laplink Cable?

  • Thread starter Thread starter Yikes!ItsIke
  • Start date Start date
Previously Yikes!ItsIke said:
Is a Null modem cable the same as a laplink cable?
If not, whats the difference?
Click to expand...

Haha, good question! Unfortunalely there is no correct answer.
The problem is that there are different ways to connect the
handshaking lines. All these can be called a "null-modem cable".
All might be called a "laplink cable" by some vendor or other.

If you use software hanshaking, all should work. With hardware
handshaking, it depends. Easiest way is to try.

Arno
 
Hi Paul, Arno

Haha, good question! Unfortunalely there is no correct answer.
The problem is that there are different ways to connect the
handshaking lines. All these can be called a "null-modem cable".
All might be called a "laplink cable" by some vendor or other.
Click to expand...

That comment is directed at SERIAL cables only I would say.

The "Laplink cable" which was some defacto-standard years ago
was actually a cable for the parallel port on PC's that implemented
bi-directional capabilities using 4-bits in each direction.

So, this is definately NOT the same thing or compatible
with regular serial NULL-MODEM cables.
(allthough the Laplink data-transfer program could use these as well
:-)

Laplink cables used to be available from computer stores,
perhaps they still are.


A wire diagram for such a cable can be found in the document at:

http://www.dfsee.com/lptool/lptool.txt

Which is the user-guide for a data-transfer utility I once
made that uses that cable.

Regards, JvW
 
Laplink Used Serial as well as parallel.


Jan van Wijk said:
Hi Paul, Arno



That comment is directed at SERIAL cables only I would say.

The "Laplink cable" which was some defacto-standard years ago
was actually a cable for the parallel port on PC's that implemented
bi-directional capabilities using 4-bits in each direction.

So, this is definately NOT the same thing or compatible
with regular serial NULL-MODEM cables.
(allthough the Laplink data-transfer program could use these as well
:-)

Laplink cables used to be available from computer stores,
perhaps they still are.


A wire diagram for such a cable can be found in the document at:

http://www.dfsee.com/lptool/lptool.txt

Which is the user-guide for a data-transfer utility I once
made that uses that cable.

Regards, JvW
Click to expand...
 
Back
Top