Graph power over time

[jrrh]

Hi,

I am new to Signal Express.  I am using it with the USB-6289 to measure system power on my DUT.  I have a target sense resistor on the board that I have sense lines connected to and thse lines are connected to analog 1 and analog 2 on the 6289.  The goal is to measure the voltage drop across the resistor and use it to calculate the power and graph it in real time with Signal Express.

I created a task for voltages ai0 and ai1 for the voltage drop across the resistor.

Tried to run the project but I am not seeing any kind of output on the screen.  

I verified the 6289 is being detected and calibrated with NIMAX.  Also created a task with NIMAX.  However, I am not sure how to specify power over time.  How do I specify power over time in Signal Express if I have sense lines connected to a resistor on a board?

Thanks, Joe

[warEagle12]

Hi Joe,

Are you able to run and see the voltage in MAX when you create the task? How do you have your voltage input set up in SignalExpress?

Here is a link that might be helpful for setting and collecting data in SignalExpress: http://www.ni.com/white-paper/5903/en/

As far as calculating the power over time, you can create a customer scale. Here is: http://digital.ni.com/public.nsf/allkb/31A3EF18B6141E2C862579DE0077ABA7

Thanks!