🚀 go-pugleaf

This time read the below lines...

Ted Rutledge <tedrofkenn@mindspring.com> wrote in message
news:80fiqi$bb$1@nntp5.atl.mindspring.net...
> I made the suggestion not because I have had personal experience with
*cable
> select* but because I had read that to use cable select one had to have a
> special cable with breaks in it.
>
> I have pondered for a while how an 80 wire cable can be connected to a 40
> wire connector and have concluded that many of the 'ground' wires in the
> cable are in fact 'floating'. Seven of the 40 pins are connected to true
> ground and therefore the adjacent 'ground' wires could be connected to
> these. This however leaves many 'Ground' wires in the 80 wire cable which
> cannot (?) be connected to a true ground.
>
> High frequency A/C will induce a current flow in adjacent lines.and so
when
> the signal lines are adjacent, as is true for many of the lines in a 40
wire
> ribbon,   signals can be corrupted.
>
> As each signal line in an 80 wire cable is isolated from it's immediate
> neighbouring signal line by a 'ground' line (even though this may be
> floating) maybe this provides the desired isolation without needing to be
> connected to a true ground ?.

What a kick-ass suggestion for breaking the big question mark on my head! I
was wondering how the other 40 wires(totally 80) are connected to the 40
pins. They're for EM wave, haha.

>
> I cannot find any breaks in my three 80 wire cables !

No breaks in mine, too. But I feel the UDMA66 ribbon line unsafe as the
lines are really thin! Sometimes I can feel worry that it will really break
somedays.

>
> I am not an Electrical Engineer. Perhaps an Electrical Engineer with
> experience in VHF will read this thread and put me straight !

I am a student.

[snip]

Martin Kou || cybermartin
cybermartin@hotmail.com