I was reading Tracy's EC2Ainstallation guide pdf
  and ran across this illustration of the back side of
  a DB37 male connector on page 20 and on page 25 of the
  EC2 manual. Then I checked the position of pin
  1 on the female mating connector on top of the EC2.
  Opps!!! Something did not look right.

  Pin 1 was actually on the left on the EC2 and it was on
  the right in the illustration. In any even I changed the
  illustration and here is the corrected version.

  Might seem like a minor point to us old sparkies but
  a newbe might be more confused than he is already :)

  Paul Lamar


Be VERY sure you are correct about this.Literally hundreds have been
built according to these instructions and no one has had a reversed
wiring problem.  Note which side of the connector is referenced in the
drawing.

Tracy

That is not what I am saying. Both will wire correctly.

My point is the illustration in the EC2 manual is disorienting.

I have looked at  the EC2 PC board and the ground pins 19 & 37
are on the right looking down on the EC.

My corrected illustration also has the ground pins  19 & 37 on the right
when the mating male connector is plugged in and you are looking down on
top of the EC. If you  rotate your illustration 180 degrees to orient
it the same as the connector on the EC it would be clearer. That is what
I did and re wrote the number so they are right side up.

Am I wrong about 19 & 37 being on the right side of the connector
looking down on the EC2?

IMHO it would help if you labeled the pin numbers on the top
of the EC2.

Paul Lamar


Without looking, I was under the impression that the illustration showed the mirror image or the other connector.  I am not sure which is illustrated, but in would be on one side of the connection and the other of the connector, thus placing the number one pin, et al, on one side looking at its "front" and on the other looking at its back.  Made sense to me at the time......

Chris
Houston

The male D-sub min connector will only mate with the female
D-sub min one way.

Here are both illustrations.
Which do you prefer?

Paul Lamar