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Thread: PCtel SeeGull EX scanner: DSP + DDC

  1. #1
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    Exclamation PCtel SeeGull EX scanner: DSP + DDC

    Hi

    I need info which IC at the EX scanner mainboard is responsible for DSP and which for DDC (Digital Down Conversion): figure-3 in the SeeGull EX Hardware Reference Manual_Rel.3.0.
    EX Top-Level Block Diagram.jpg

    For EX_WCDMA+GSM:I think that Xilinx Spartan-3 FPGA (IC=U17) is responsible for DDC. For DSP may be some of the ICs with heatsinks (U2, U4; don't know type). See attached picture:
    EX_WCDMA+GSM_Mainboard.jpg


    For EX_LTE: Please share your knowledge and pictures of EX-LTE (or EX-mini-LTE) mainboard. Is there Xilinx Spartan-3 FPGA or other type FPGA?


    Thanks.
    Last edited by tonyM; 2019-02-17 at 11:16 PM

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  4. #2
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    Default Re: PCtel SeeGull EX scanner: DSP + DDC

    I think no need to research it, Pctel already give up all sparts of EX scanner, if one chip broken, FPGA, you have no spare part for that, let me check the photo took before.

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    Default Re: PCtel SeeGull EX scanner: DSP + DDC

    Quote Originally Posted by crisnspro View Post
    I think no need to research it, Pctel already give up all sparts of EX scanner, if one chip broken, FPGA, you have no spare part for that, let me check the photo took before.
    You will answer my question if you have pictures of EX-LTE (or EX-mini-LTE) mainboard: what FPGA is used there- Xilinx Spartan-3 FPGA or other type FPGA.
    Do you have info what is the type of the ICs with heatsinks (U2, U4)?
    Last edited by tonyM; 2019-02-19 at 02:16 AM

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  8. #4
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    Default Re: PCtel SeeGull EX scanner: DSP + DDC

    I need to tear down the EX scanner, checked, I did not take photo before.

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  10. #5
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    Default Re: PCtel SeeGull EX scanner: DSP + DDC

    Quote Originally Posted by crisnspro View Post
    I need to tear down the EX scanner, checked, I did not take photo before.
    Do you teared down your EX-LTE scanner?

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