On Sun, 14 Oct 2012, Dennis Boone wrote:
On Sun, 14 Oct 2012, Tothwolf wrote:
Do these use an unshielded AMP CHAMP type
connector? Is there a pinout
and photo of these available somewhere? They sure don't sound very
complicated.
I don't recall them being shielded, and you're right, they're _not_
complicated. I think I've got the pinout somewhere, and I can certainly
build some, was just hoping (lazy!) that I could avoid it.
Do the cables include the ring-indicate signal? Since they are using DB-25
connectors I'd guess they probably do. If not, or if the RI signal isn't
needed, an easy way to fabricate these would be to terminate 6x unshielded
8-conductor flat cables with 8P8C connectors. Shielded flat cable is
available too, but it would be slightly more expensive. Another option
would be shielded UTP/Cat5, but since nearly all of the shielded UTP cable
is solid conductor, you'd have to make sure to use 8P8C plugs that are
specifically made for solid conductor cables. You could also do the same
thing with 10-conductor flat cord and 10P10C connectors and pin them out
like Digi did so that they could also be used with 8P8C terminated cables
and adapters. Unshielded CHAMP connectors are pretty cheap, but the
tooling to install them is expensive.
There are quite a number of options, the only problems most people are
going to run up against is the tooling cost and minimum quantities on the
connectors and cable.