Measurement
261
4-port TRL Calibration
• Overview
• Procedure
Other topics about TRL Calibration
Overview
The 4-port TRL calibration function lets you measure calibration data by
connecting thru, reflection (open or short), line, or match calibration
standards to (between) 4 test ports. This calibration provides the most
accurate measurement for non-coaxial parts, using 48 error terms model
in total for calibration in the same way as full 4-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 > 4-Port TRL Cal > Select Ports.
4. Click Thru/Line to start the measurement of the calibration standard.
5. Click Reflect to start the measurement of the calibration standard.
Softkey Function
Port 1 Reflect
Executes reflection calibration for test port 1.
Port 2 Reflect
Executes reflection calibration for test port 2.
Port 3 Reflect
Executes reflection calibration for test port 3.
Port 4 Reflect
Executes reflection calibration for test port 4.
6. Click Line/Match to start the measurement of the calibration
standard.
Softkey Function
1-2
Line/Match
Executes line/match calibration for test ports 1 and
2.Use this to perform forward-direction measurement
and reverse-direction measurement at the same time.
Executes line/match calibration for test ports 1 and
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