Note For isolation calibration, it is recommended to set narrow
IF bandwidth, attenuation, and firmly fix the cables. Full One-Port Calibration
Full one-port calibration involves connection of the following three standards to one test
Measurement of the three standards allows for acquisition of all the three error terms
(Ed, Es, and Er) of a one-port model. Full 1-port calibration is a highly accurate
method for 1-port reflection measurements. One-Path Two-Port Calibration
A one-path two-port calibration combines full one-port calibration with transmission
normalization. This method allows for a more accurate estimation of transmission
tracking error (Et) than using transmission normalization.
One-path two-port calibration involves connection of the three standards to the source
port of the Analyzer (as for one-port calibration) and a THRU standard connection
between the calibrated source port and the other receiver port.
One-path two-port calibration allows for correction of Ed, Es, and Er error terms of the
source port and a transmission tracking error term (Et). This method does not derive
source match error term (El) of a 2-port error model.
One-path two-port calibration is used for measurements of the parameters of a DUT in
one direction, e.g. S11 and S21. Full Two-Port Calibration
A full two-port calibration involves seven connections of the standards. This calibration
combines two full 1-port calibrations for each port, and one THRU connection, which
provides two transmission measurements for each test port being a source. If optional
isolation calibration is required, connect LOAD standards to the both test ports of the
Analyzer and perform two isolation measurements for each source port.
Full 2-port calibration allows for correction of all the twelve error terms of a 2-port
error model: Ed1, Ed2, Es1, Es2, Er1, Er2, Et1, Et2, El1, El2, Ex1, Ex2 (correction of Ex1, Ex2
can be omitted).
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