DCB switch box

[media at mail1.nai.net]

At 2:13 PM -0500 05/22/98, Christian Oncken wrote:
>I built my own DCB cable for my juno-60.  One thing to keep in mind is that
>the cable for has a send end and a recieve end... At least the one I built
>does.  The cable is not wired directly:  1 to 1, 2 to 2, ect... the wires
>are switched around.  If you build a switch box and use this same type of
>cable both to and from the switch box, things might get screwy.

If it were up to me I would wire the box straight through and rely on the
cables to do Transmit/Receive switching thing.  This way you can use it
with standard Roland DCB cables.  So if some guy shows up with Jupiter 8
you can still use his cable with your switchbox.

These are the pinouts on the Juno 60 :

1 busy RX
2 data RX
3 clock RX
4 gnd
5 busy TX
6 data TX
7 clock TX

Pins 1-3 are wired to 5-7 at the other end of the H172.  On the H165 the
other three on each end are wired vice versa as well.

Pins 8-14 are not used on the Juno 60 but wired straight through on the
H165 cable for use with the Jupiter 8.

>I had a tough time finding the connectors too... so good luck finding all
>that you will need.

Try Digikey at 1-800-344-4539 and look on page 58 of their latest catalog
where it says "NorComp Parallel Interface Connectors (Centronics Type)".
I've never tried the chassis mount, but I was happy with ones I used for
cables.  They come in a little plastic bag with the shell and everything :)

(Are "shell" and "hood" perfect synonyms or is there a difference??)

PEACE OUT :)
MARK