Hi Dhiraj,
Since the bandwidth of the PCI-5112 is only 100MHz, the only frequency bands that you would be able to sample are the HF (3 to 30MHz) and lower end of the VHF (30 to 300MHz) bands. To get a good representation of the signal, it is recommended to sample at 10 times the frequency. Taking this into account, sampling a signal greater than 10MHz may not return an ideal representation of the radio signal. What would be best for your application is one of our RF Signal Analyzers such as the PXI-5661 or PXI-5660. More information about these can be found here. These products are only available in the PXI platform, but they provide a downconverter and digitizer so that you can downconvert the RF signal to a frequency range that can be analyzed.
Regards,
Andrew W
National Instruments
