Agilent Technologies 20ET ユーザーズマニュアル

6-10

Calibrating for Increased Measurement Accuracy

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 Analyzers 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 effectively removes all twelve correctable systematic
errors. Some measurements do not require correction for all twelve errors.

Table 6-2

explains each correction and its uses.

Table 6-2 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)