• HMC542B数控衰减器有额外20dB衰减

    1. 如图制版,测量时发现数控之后有额外20dB衰减。如设置为0dB,则频谱仪测出-20dB;设置为16dB衰减,频谱仪测试为-36dB。请问这可能是什么问题?焊接问题还是程序问题。

    2. 时序中DC是什么意思

  • RE: Daisy chain multiple HMC542BLP4E?

    Hi Kevin,

    The serial output is served as a monitor/read, with 8 clock cycle delayed from the serial input. The HMC542B is design targeted for cascading the HMC542B with Dattn out of pre-stage to the Dattn in of the cascaded stage, with LE to control…

  • RE: HMC542BLP4 at power up

    Hi Joe,

    The serial controller used in HMC542BLP4 does not support Power Up mode, it will not power up to a defined state.

    If your application requires the Dattn to be set to a defined attenuation state at power up, I would suggest our 6-bit Parallel…

  • FAQ: Transitions in Digital Step Attenuators (DSA): Glitch-Free, Safe-State, No-Protection

    Q.

    What are the differences between glitch free, safe state and no protection transitions in digital step attenuators (DSA)?

     

    A.

    Digital Step Attenuators usually have an array of attenuator stages internally and turning on or off the different stages…

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