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current draw of PCI-6225 and PCI-6704

I am putting together a low power data acquisition and control system. For that purpose I am using a desktop pc as a real-time target. As mentioned in the subject of the thread, I am using the DAQ cards PCI-6225 and PCI-6704.

 

As the system is very low power, I only have limited current available from the 12V rail on my ATX power supply – more specifically 400mA. This should be just enough for the motherboard, and my concern is therefore whether or not the DAQ-cards draw any current from the 12V rail.

 

Any help would be greatly appreciated.

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Hi Martin,

Both PCI-6225 and PCI-6704 needs 12V to operate:

PCI- 6225 Power Requirements

Current draw from bus during no-load condition

+12 V.......................................... 0.15 A

Current draw from bus during AI and AO overvoltage

condition

+12 V.......................................... 0.25 A

 

PCI-6704 Power Requirements

+12 V...................................................... 70 mA

 

In your system those two PCI-cards will need min. 220mA at 12V rail to operate, so 400mA at 12V rail for the entire system doesn't seems to be enough.

-----------------------------------------------------
Dennis Morini
District Sales Manager
National Instruments Denmark
http://www.ni.com/ask
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Thank you for the detailed answer.

I'll just stick with a power supply that has better current capabilities on the 12V rail.

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