GTA02: NavBoard V3 causing GPS interference

Pascal Gosselin pascal at
Fri Feb 8 17:10:00 CET 2013

I have found a good reference on how to best handle I2C cabling. It's a 
PowerPoint Presentation from Texas Instruments, I made a screenshot of 
the relevant image:

As I suspected, only one end of the shield gets grounded, individual 
coaxes for SCL and SDA.

Google  I2C cable issues.ppt   to find the original document as the 
first hit.

Now I have to source some extremely tiny minature coax, ideally with a 
solid core (for easier soldering to the pads on the NavBoard and the 
GTA02). Looking for recommendations, ideally something I can order from 
Digi-Key, Newark or Mouser in smaller quantities (it's not like a need a 
1,000 foot roll!).

It's not clear IF the power supply wires should be shielded.  I think I 
will try to see if it makes a difference for the GPS.


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