Port extension typically compensates a defined electrical delay and sometimes loss; full calibration corrects a broader error model. They are not interchangeable.
How it works in practice
Use the instrument's documented method and assumptions. A simple delay correction does not necessarily remove connector mismatch or all fixture effects. For precision de-embedding, obtain the required complex fixture information. Verify results with a suitable check device.
Example and interpretation
Removing a cable's phase slope with port extension does not automatically correct its imperfect match.
Checks before use
- Identify the added path
- Read method limitations
- Apply the appropriate correction
- Verify the resulting plane
Important limit
Do not describe every delay adjustment as a complete fixture calibration.
Related Centron RF product
SMA rotary attenuator with 1 dB steps. The linked fine-step unit lists 0–10 dB in 1 dB increments. It can be considered for controlled level changes within its ratings. Dial resolution does not establish traceable accuracy; calibrate the assembled path as required.
Further reading
Keysight: Fundamentals of RF and Microwave Power Measurements. This background reference explains general principles; the selected Centron RF model’s datasheet governs its own ratings.
Related guides
Educational guide. Numerical examples use the stated assumptions and are not test results for a supplied unit.