PXI-6259 +5V pins common or separate?

[ajog]

Hello,

The two PXI-6259 68-pin VHDCI connectors have two pins each that supply +5V.  This makes a total of 4 pins each of which supplies 5V.  If on the load board they are all shorted to the same +5V net, would that create any problems? Or do we benefit by increasing the amount of maximum possible supply current?

It appears that each pair of +5V pins share a 2A fuse.  Please advise.

Thanks

Anand

[Brandon_B]

Hello Anand,

If you take a look at page 11 of the PXI-6259 specifications page you can see that the +5V terminals on each connector has a 1A max current.  When the terminals are combined your current draw increases to a 2A maximum.  So each connector has  a 1A self resetting fuse, and when combined they can come together to create a 2A max current situation.  I hope this helps.

Regards,

[ajog]

Hi Brandon,

I follow.  My main concern was that connecting two (possibly independent) power sources together could lead to a board malfunction.  But from your answer I assume that it is safe to do so.

Anand

[Brandon_B]

Hello Anand,

I apologize for not clarifying but yes the terminals can be combined without any problems.

Regards,