DB9 pinout diagram standard?

[nervis1]

Which way does the drawing assume the plug is pointing?

photo 1 or 2?

[wms]

Dave,
It is from the "working end"...the pin side not the wire side..

So that would be photo #2.

[nervis1]

Ward saves the day again.

Thanks.

Dave

[Ken_Shea]

Is this some form of a contest

This link looks easier to understand in regards to the numbering orientation, yours seems confusing.

http://www.nullmodem.com/DB-9.htm

[pminmo]

Yes,
Ken's url points out that the female vs male's orientation vs pin number. For example you can put a pc mount DB9M in a DB9F spot, but when you look at the pin numbers you go "huh?"

[nervis1]

My diagram is for a female. So Ward is wrong?....say it ain't so.

[nervis1]

Nah, OK I think I get it.

[Al_The_Man]

The majority of D connectors have numbered pins, albeit very small
Al.

[nervis1]

Figures mine would not have them. I bought some cheap bulk plugs at Fry's.

[unterhaus]

Before I got bifocals I thought they stopped putting the numbers on there too. I don't think I have ever seen any without numbers, and I recently got some cheap no-name import crap from a surplus dealer. You know they're crummy if the Chinese company that made them doesn't claim them.

[gar]

051221-0949 EST USA

nervis1:

Your "Photo-Drg 2" photo shows the pin side of a male connector. The lower left pin of that connector is pin 1. The top left pin is pin 5. Lower right is 6, and top right is 9.

Obviously female connectors have the number positions reversed.

The Photo-Drgs are very confusing.

If the drawing in "Photo-Drg 2" is intended to indicate the numbering as viewed toward the pins, rather than the rear (solder or wire side), then the drawing is wrong. The drawing here shows the pin positions of a male connector as viewed from the rear, or a female viewed from the front. The title may indicate female, but the photo is a male looking toward the pins.

What is the photo in "Photo-Drg 1". Initially I thought it was the front of a female connector. But more likely it is the rear side of a male or female connector showing the solder cup end of the pins.

Both photos have at the top DB-9 Fem, then the title is cut off. Clearly #2 is not a female in the photo.

In the future use AMP connectors or some other quality manufacturer. Use contacts with 50 millionths gold over nickel. There is a big difference between cheap and quality connectors. Contact force is an important factor. AMP crimp type contacts are very easy to terminate, but the crimping tool is very expensive.

Looking at photo 1 the magnitude of the crimp around the plastic indicates that this photo is the rear side of a DB9, solder terminal side.

.

[wms]

Sorry Dave I missed the fact that the diagram was for a female and you had a male conector..

Speedy posting I guess...Hope it didn't cause you any problems..