6-10
Calibrating for Increased Measurement Accuracy
Procedures for Error Correcting Your Measurements
Procedures for Error Correcting Your Measurements This section has example procedures or information on the following topics:
• frequency response correction
• frequency response and isolation correction
• enhanced frequency response correction (with enhanced reflection error correction)
• one-port reflection correction
• full two-port correction (ES Analyzers Only)
• TRL*/LRM* correction (ES A n a lyzers Only)
• power meter measurement calibration procedure
NOTE If the channels are uncoupled, you must make a correction for each channel.
Types of Error Correction
Several types of error correction are available that remove from one to twelve systematic
errors. The full 2-port correction effectiv e ly re mo v es all twelve correctable systemati c
errors. Some measurements do not require correction for all twelve errors. Table 6-2
explains each correction and its uses.
Table6-2 Purpose and Use of Different Error Correction Procedures
Correction Procedure Corresponding
Measurement Errors Corrected Standard Devices
Response Transmission or
reflection
measurement when
the highest accuracy
is not required.
Frequency response. Thru for
transmission, open or
short for reflection.
Response & Isolation Transmission of high
insertion loss devices
or reflection of high
return loss devices.
Not as accurate as
1-port or 2-port
correction.
Frequency response
plus isolation in
transmission or
directivity in
reflection.
Same as response
plus isolation
standard. (load)