3-port TRL Calibration

Other topics about TRL Calibration

Overview

The 3-port TRL calibration function lets you measure calibration data by connecting thru, reflection (open or short), line, or match calibration standards to (between) 3 desired test ports. This calibration provides the most accurate measurement for non-coaxial parts, using 27 error terms model in total for calibration in the same way as full 3-port calibration.

Before executing TRL calibration, you need to modify the calibration kit definition you use (or create a new one). For more information, see Changing the Calibration Kit Definition.

Procedure

  1. Press Channel Next/Channel Prev keys to select the channel for which you want to execute calibration.

  2. Press Cal key.

  3. Click Calibrate > 3-Port TRL Cal > Select Ports.

  4. Select test ports for which you want to execute TRL 3-port calibration. (In the following procedure, test ports you select here are expressed as test ports x, y, and z.)

  5. Click Thru/Line to start the measurement of the calibration standard.

  6.  Click Reflect to start the measurement of the calibration standard.

  7.  Click Line/Match to start the measurement of the calibration standard.
     

    Softkey

    Function

    x-y Line/Match

    Executes line/match calibration for test ports x and y. Use this to perform forward-direction measurement and reverse-direction measurement at the same time.

    x-y Fwd (Syx)

    Executes line/match calibration for test ports x and y. Use this to perform forward-direction measurement only.

    x-y Rvs (Sxy)

    Executes line/match calibration for test ports x and y. Use this to perform reverse-direction measurement only.

    x-z Line/Match

    Executes line/match calibration for test ports x and z. Use this to perform forward-direction measurement and reverse-direction measurement at the same time.

    x-z Fwd (Szx)

    Executes line/match calibration for test ports x and z. Use this to perform forward-direction measurement only.

    x-z Rvs (Sxz)

    Executes line/match calibration for test ports x and z. Use this to perform reverse-direction measurement only.

    y-z Line/Match

    Executes line/match calibration for test ports y and z. Use this to perform forward-direction measurement and reverse-direction measurement at the same time.

    y-z Fwd (Szy)

    Executes line/match calibration for test ports y and z. Use this to perform forward-direction measurement only.

    y-z Rvs (Syz)

    Executes line/match calibration for test ports y and z. Use this to perform reverse-direction measurement only.

  1. Click Done to finish TRL 3-port calibration. At this point, the calibration coefficient is calculated and saved. The error correction function is automatically turned on.