THRU Response Calibration (transmission test)

Other topics about Basic Calibration

Overview

In THRU response calibration, calibration data are measured by connecting a THRU standard to the desired test port. This calibration effectively eliminates the frequency response transmission tracking error from the test setup in a transmission test using that port.

2-Port error model (THRU response)

 

It is also possible to carry out an isolation calibration using a LOAD standard in the process of THRU response calibration. An isolation calibration eliminate sisolation error (crosstalk error) from the test setup in a transmission test using that port.

2-Port Error model (THRU response + isolation)


 

S-Parameter Measurement

  1. Press Channel Next (or Channel Prev) to select the channel for which you want to perform the calibration. Confirm if your required setup is set at the channel.

  2. Press Cal > Calibrate > Response (Thru) > Select Ports.

  3. Select the test ports (and corresponding S parameters) upon which a THRU response calibration is performed.  

  4. Make a  connection between the selected test ports (between the connectors to which the DUT will be connected).

     

  5. Click Thru to start the calibration measurement.

  6. If an isolation calibration must be performed using a LOAD standard, follow the procedure below:

    1. Connect a LOAD standard to each of the two selected test ports (connectors to which the DUT is to be connected).

    2. Click Isolation (Optional) to start the calibration measurement.

  7. Click Done to terminate the response calibration (and the LOAD isolation calibration) process. Upon pressing this key, calibration coefficients are calculated and saved. The error correction function is also enabled automatically.

Gain-Phase Measurement

  1. Press Channel Next (or Channel Prev) to select the channel for which you want to perform the calibration. Confirm if your required setup is set at the channel.

  2. Press Cal > Calibrate > Response (Thru) > Select Ports > GP Ports.

  3. Connect the cable according to following figure.

  4. Click Thru to start the calibration measurement.

  5. If an isolation calibration is required, follow the procedure below:

    1. Connect the LOAD standards in the position specified in the figure below.

    2. Click Isolation (Optional) to start the calibration measurement.

  6. Click Done to terminate the response calibration (and the LOAD isolation calibration) process. Upon pressing this key, calibration coefficients are calculated and saved. The error correction function are also enabled automatically.