Sooo, this board is built incorrectly

Support Q&A
1

------Question for DJB9MF Please Put your question below------

The silkscreen numbers show that the M and F DB9 soldered on connectors are swapped. As built pin 1 connects to pad 5 and so on. I need to desolder and swap. This affects both of the units I received and already built up my adaptor with. While I can do the swap I wanted this to be brought up to make sure that incoming inspection of part quality can be updated to catch these kind of things.

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-Jim

2

We agree, this is one confusing design, take a look at this diagram:

image
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DataSheet: https://www.l-com.com/images/downloadables/2D/DJB9MF_2D.pdf

So P1 (header) goes to “pin 5” on the pcb from both sides..

Regards,

3

Sounds like they accidentally swapped the parts on the BOM and instead of scrapping the parts built they just “fixed” the doc. I just assumed that 1 goes to 1 like any one would.

-Jim

4

Can’t disagree.