OPEN/SHORT Response Calibration (reflection test)

• Overview

• S-Parameter Measurement

• Gain-Phase Measurement

Other topics about Basic Calibration

Overview

In OPEN or SHORT response calibration, calibration data are measured by connecting an OPEN or SHORT standard, respectively, to the desired test port. For frequency response, these calibrations effectively eliminate the reflection tracking error from the test setup reflection test using that port.

 1-Port error model (OPEN/SHORT response)

It is also possible to carry out isolation calibration with a LOAD standard during OPEN/SHORT response calibration. An isolation calibration eliminates the directivity error from the test setup in a reflection test using that port.

1-Port error model (OPEN/SHORT 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 to the channel.

2. Press Cal > Calibrate.

3. Select Response (Open) or Response (Short) calibration.

   Softkey	Function
   Response (Open)	Displays softkeys for performing an OPEN response calibration (response calibration with an OPEN standard)
   Response (Short)	Displays softkeys for performing a SHORT response calibration (response calibration with a SHORT standard)

    

4. Click Select Port.

5. Select the test port upon which you will perform OPEN/SHORT response calibration.

6. Connect a calibration standard (OPEN or SHORT) to the selected test port (connector to which the DUT is to be connected).

7. Click Open or Short to start the calibration measurement.

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

9.  Connect a LOAD standard to the selected test port (connector to which the DUT is to be connected).

10. Click Load (Optional) to start the measurement on the LOAD standard.

11. 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.

  Connecting standards in OPEN/SHORT Response calibration

Gain-Phase Measurement

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

2. Press Cal > Calibrate.

3. Select Response (Open) or Response (Short) calibration.

   Softkey	Function
   Response (Open)	Displays softkeys for performing an OPEN response calibration (response calibration with an OPEN standard)
   Response (Short)	Displays softkeys for performing a SHORT response calibration (response calibration with a SHORT standard)

    

4. Click Select Port > GP Port.

5. Connect a calibration standard (OPEN or SHORT) with the position specified in the figure below.

6. Click Open or Short to start the calibration measurement.

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

   1. Connect a LOAD standard with the position specified in the figure below.

   2. Click Load (Optional) to start the measurement on the LOAD standard.

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

Connection standards in Open/Short response calibration (Gain-Phase measurement)