DPG-Lite Import complex data

Hi rdb9879 ,

Thank you for your query. You can import a text file containing the data samples, however I'm not sure if the file can be complex I/Q since that will require two separate data sets. 

You can try using the Single Tone generator, which can generate a quadrature (complex) tone in addition to the primary (in-phase) tone, by checking the “Generate Complex Data” option. This second (Q) tone is equal in frequency and amplitude to the primary (I) tone but is 90° out of phase.

By default, the Q tone is -90° relative to the I tone. Entering a negative frequency in the Desired Frequency box will cause the Q tone to be +90°. Using the "Generate Complex Data" option will generate two separate data vectors I and Q on two separate files. 

Regards,
Marco

Hello. Yes I was aware on generating complex data using the Single Tone, but I'd like to test different/arbitrary waveforms by importing data. It seems strange that there is not a better way to test with complex data to fully test the ad9081 given the price of the ads9...

Hi rdb9879,

Good day, you can import an arbitrary data from text file by giving half file as I and half file as Q with a pattern of IIIIQQQQ. Also, please do provide data capture from ACE analysis.

@Deferson that sounds reasonable, but there is no checkbox when importing data to indicate complex data vs real dataset. How does the DPG-Lite tool know whether to use the entire file as all-real or the half/half real/complex as you described? 

Hi rdb9879 ,
DPG-Lite tool will determine thru data formatting if complex or real, depending on the JESD204 mode. For example for mode 15, it is configured as complex.