10-24-2008 03:07 AM
I hope to use PXI 6514 to control 60 relays. It needs to source 50 mA current per pin. But I get some query about the HW of 6514.My question are as below:
1. In the PXI 6514's specification, it state as below:
"Power Requirements
+5 VDC (±5%)...................................... 150 mA
+3.3 VDC (±5%)................................... 300 mA, typical;
500 mA, maximum"
Is this the requirement of the external power supply which need to be provided by the user? If yes, as I can see, for this card each output pin can source up to 75mA current. It has 64 ouputs on the board, that means the current comsuption would be at least : 64*75mA=4800mA in total. It seems that the power supply as the specification stated can't source so much current. Is it a confliction?
2. Is the output voltage level of this card can be programable? I hope to get 5V voltage level when output high logic. Is it possible?
The advance is turely appreciated
10-26-2008 11:19 PM
10-28-2008 05:24 AM
Hi Napoleon,
I see. I would add a extenal power supply.
Thanks for your quick answer!
BR,
Ivan