The brand-new PN400 Phase Noise Test System is available for purchase! →

ghuxtable

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  • January 6, 2021 at 3:42 pm in reply to: Is SA124B suitable for EMC pre-compliance testing? #237999
    ghuxtable
    Participant

    Thanks Andrew
    Yes I see what you mean about the noise floor. Why is it that the noise floor changes? I guess this has something to do with the amplifier circuitry and the sensitivity / gain required for the new reference level?

    Is there a way to control the scale of the horizontal frequency axis so that it is logarithmic rather than linear?

    January 6, 2021 at 12:30 am in reply to: Is SA124B suitable for EMC pre-compliance testing? #237991
    ghuxtable
    Participant

    Can you also please confirm that my understanding and implementation of the antenna factors is correct (by way of comparing the attached csv with the antenna spec’s also attached)?

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    January 5, 2021 at 5:47 pm in reply to: Is SA124B suitable for EMC pre-compliance testing? #237989
    ghuxtable
    Participant

    Thanks

    I am also having difficulty setting up the limit lines.
    For example in the attached screenshot I have used -67dB to generate a 40dB limit line. I see that the Limit Line points are specified as ‘dBm’ but what does that mean? If it means dB relative to 1mV then I would subtract 60 to convert from dBuV to dBmV (40dBuV would become -20dBmV). How does 40dBuV/m convert to -67dBm ?

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    January 4, 2021 at 11:51 pm in reply to: Is SA124B suitable for EMC pre-compliance testing? #237984
    ghuxtable
    Participant

    At risk of revealing my limited knowledge…
    Attached is the test lab result I am trying to replicate.
    How can I set up Spike to replicate the scale (dBuV/m) for example?
    And show same limit lines?
    Showing my lack of experience here.

    • This reply was modified 5 years, 9 months ago by ghuxtable.
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    January 4, 2021 at 9:02 pm in reply to: Is SA124B suitable for EMC pre-compliance testing? #237983
    ghuxtable
    Participant

    I have also noticed in the Spike manual, section 4.8, that ‘Precompliance measurements are available for BB series and SM series devices’. This answers my other query which I need not now ask – that being why was ‘EMC Precompliance’ greyed out and not available in my installation of Spike.
    So why is it that the SA series devices do not have this option?

    January 4, 2021 at 8:31 pm in reply to: Is SA124B suitable for EMC pre-compliance testing? #237981
    ghuxtable
    Participant

    I also have access to one of these antennas:
    BicoLOG® 20100 E
    Datasheet attached.
    Would the SA124B and this antenna be a good pair for my purposes?

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Viewing 6 posts - 1 through 6 (of 6 total)