Hi,
I am working on a PXI project to generate a single tone frequency signal, (which will be modulated by vital signs) and then demodulate the signal and view the time domain demodulated signal and its spectrum. I am able to generate the signal and view the demodulated wave but the problem is I am using PXI 5663 for the receiver (and 56773 to transmit the single tone signal) and the 5622 digitizer has a very high sampling rate(150MS/s) which is too high for vital signs (whose frequency is not more than 10-12Hz).
I want to change the sampling rate of 5622 and I read a couple of sites (http://zone.ni.com/reference/en-XX/help/370592P-01/digitizers/5622_clocking/) and documents on
- I am using PXI Clock as the Reference Clock Source to synchronize the 5673 and 5663 so how can I change the clock frequency of 5622?
- I tried using the Decimate and Resample vi s to change the sampling frequency of the received waveform but I did not get any output.(Please find attached the vi and the front panel description of the demodulate vi;the transmission vi is the default RFSG Single Tone Generation).
I am stuck at this point and don't know how to proceed.
Could someone please help me out?
Thanks so much,
Sharmi
