Monday, March 12, 2012

Never Trust a Cable Just Because It Has The Right Connectors

I got some DB9 to mini DIN cables to connect to my Alicat MFC and... no luck.  After 1/2 hour of making sure I connected to the right PC serial port, I realized that the cables I got were designed for some other use.  They connected the wrong pins (only 3) from the DB9 to the DIN.  However, lucky for me, the DB9 connector on the cable was easily open-able and the cable had all the strands I needed!

The necessary connector layout is as follows:

DB9 --------------> 8 Pin Mini-DIN
5 ----- Ground ---- 8                                                             
3 ------ TX ------- 3
2 ------ RX ------- 5

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