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Setting on both of I and Q channel on adc08d1520.

bridget yu
Intellectual 910 points

What if happen if we set IS=1 to enable data capture on I channel, but we set IQ_CAPT =1 in FPGA to enable capture on both I and Q channel?

We noticed that even IQ_CAPT is setting as 1, only data is observed on I channel.

Anyone could share their thoughts?

Thanks.

-Bridget

  • 0
    TI__Mastermind 44680 points

    Hi Bridget

    IQ_CAPT = 1 is set to allow wavevision to capture I and Q channel data simultaneously when the ADC is operating in non-DES mode (DEN = 0). In this mode the IS setting has no effect.

    To view both channels of captured data in Wavevision 5 when IQ_CAPT = 1 (NonDES I and Q mode), than navigate to the Channels tab at left and uncheck "Automatically hide inactive channels”, then both Channel 1 (I, Red) and Channel 2 (Q, Green) will be displayed. I have added positive offset to the I-channel settings to help make the two data sets clear in the plot below.

    Best regards,

    Jim B