System Cable Loss Calibration (Using Switch Box as an Example)

Calibration Preparation:

Hardware Preparation:

1. Spectrum Analyzer
2. Vector Signal Generator
3. Switch Box
4. Five RF cables, namely:

   • TST-REF: Used for REF test, as a reference line

   • TST-BS: Used for BS line test

   • TST-SA: Used for SA line test

   • TST-ASG: Used for ASG line test

   • TST-VSG: Used for VSG line test

Software Preparation:

1. TST PASS RF Automated Test System

Cable Loss Plan Settings:

1. In Cable Loss, create a Cable Loss Project and then create a Plan
2. Select the test type (System, NR, or DAQ Sensor)
3. Set the Stop Frequency for the corresponding device
4. Set the corresponding Frequency Step
5. Select the corresponding Port based on the number of ports on the Switch Box
6. Select the Item to be tested
7. Click Update to save the settings and prepare for cable loss calibration

REF:

Software Prompt (as shown):

Hardware Connection:

Operation:

1. At this time, the Switch Box does not require any connection
2. Use TST-REF to connect the EUT to the SA
3. After connecting, click confirm, and the system will automatically test REF

EUT to BS:

Software Prompt (as shown):

Hardware Connection:

Operation:

1. Use TST-REF to connect the EUT to the corresponding port indicated by the system (EUT to the front port of the Switch Box)
2. Use TST-BS to connect the SA to the corresponding port indicated by the system (SA to the rear port of the Switch Box)
3. After the devices are connected, click confirm, and the system will automatically test EUT to BS

EUT to SA:

Software Prompt (as shown):

Hardware Connection:

Operation:

1. Use TST-REF to connect the EUT to the corresponding port indicated by the system (EUT to the front port of the Switch Box)
2. Use TST-SA to connect the SA to the corresponding port indicated by the system (SA to the rear port of the Switch Box)
3. After the devices are connected, click confirm, and the system will automatically test EUT to SA

EUT to ASG:

Software Prompt (as shown):

Hardware Connection:

Operation:

1. Use TST-REF to connect the EUT to the corresponding port indicated by the system (EUT to the front port of the Switch Box)
2. Use TST-ASG to connect the SA to the corresponding port indicated by the system (SA to the rear port of the Switch Box)
3. After the devices are connected, click confirm, and the system will automatically test EUT to ASG

EUT to VSG:

Software Prompt (as shown):

Hardware Connection:

Operation:

1. Use TST-REF to connect the EUT to the corresponding port indicated by the system (EUT to the front port of the Switch Box)
2. Use TST-VSG to connect the SA to the corresponding port indicated by the system (SA to the rear port of the Switch Box)
3. After the devices are connected, click confirm, and the system will automatically test EUT to VSG

Set Test Results as System Cable Loss:

In the Task or Report section, click Set data to system cable loss to use the calibration results as the system's Cable Loss