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Pspice measurement results

dirkoson

 Hello,

I have generate a bode plot. I want to get the gain value which is fallen to -1dB based on the gain value at 1kHz. I know I could take the cursors, but I want to take the measurement results.

For example 30.3dB at 1kHz and 29.3dB at x kHz.

I thought I can  take the function: bandwidth(1,dB_level) from the measurement results. I write Bandwidth(  DB(V(Uaus1)/V(Uein)) , 1 ) but I get no result.

 

Can everone help me, please?

Best regards

Dirk

 

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  • Alok Tripathi

    I think you are looking for an measurement expression some thing like

    Frequency at which GAIN is = db(Gain at 1KHz ) - 1db

    I don't think, this is same as bandwidth(1,dB_level). This expression would give you bandwidth for "db_level" say 2db bandwidth.

    You need to create your own custom measurement expression for that. You may want to refer "YatX" measurement expression syntax (Trace >measurement > View) and modify this as per your requirement.

Reply
  • Alok Tripathi

    I think you are looking for an measurement expression some thing like

    Frequency at which GAIN is = db(Gain at 1KHz ) - 1db

    I don't think, this is same as bandwidth(1,dB_level). This expression would give you bandwidth for "db_level" say 2db bandwidth.

    You need to create your own custom measurement expression for that. You may want to refer "YatX" measurement expression syntax (Trace >measurement > View) and modify this as per your requirement.

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