Help with "ni5640R Analog Input and Output" example with NI-5640R card

[sandeep palreddy]

Hi there,

             Using the example "ni5640R Analog Input and Output" with the NI-5640R card i want to generate a chirp from frequency 5MHz to 45MHz and plot the amplitude response as a function of frequency. I want to output this chirp into AO0 (Analog Output Port 0) output and i am connecting physically with a wire the AO0 (Analog Output Port 0) to AI0 (Analog Input Port 0) and plot the amplitude response of the wave i recieved at AI0 (Analog Input Port 0) to make sure that i am revicing what i should be. Can some one please tell me what changes i have to make to the "ni5640R Analog Input and Output" example so that i can accomplish generating the chirp for 5MHz to 45MHz.

The chirp that i will be using is of the form:

Where, fo = initial frequency = 5MHz.

and (fo+k*t/2)*t = 45MHz at the final sweep time T = SOME USER DEFINED TIME. We get the value of 'k' from this condition.

Can some one please help me with this. Any help will be grately appreciated.

Thanks,

Sandeep.

[Kenn_N]

Hey sandeep,

Thanks for contacting National Instruments support.  There is a board just for that product.  Please post there.

Regards,