How much current does cDAQ 9178 chassis need for USB communication?

[tatsuya1]

Hi, 

How much current (maximal) does cDAQ 9178 chassis need for USB communication? 

I have a self-powered USB hub with four cDAQ 9178 chassis. The problem is that no other USB (self-powered) devices are not recognized on the hub. I want to know how much current is consumed by the four chassis.

Thank you,

Tatsuya

[Canon_Fan · Accepted solution]

Hi Tatsuya

As described in cDAQ 9178 SPECIFICATIONS：http://www.ni.com/pdf/manuals/374046a.pdf

The input voltage range is 9 to 30 V and the maximum required inputpower is 15W.

At the same time ,the power consumption from USB is 4.10 to 5.25 V with 500 μA maximum.

May it help you.

Regards!

[tatsuya1]

Thank you Canon_Fan!