Simplified 3/4-Port Trl Calibration - Agilent Technologies ENA Series User Manual

NOTE For the simplified full 3-port calibration, (Optional) is displayed on the softkey of the type
of thru measurement that can be omitted. For example, when the omittable thru
measurement is 2-3,
omittable thru measurement is the same as that for a required thru measurement.
Table 4-3 Types of thru measurement that can be omitted for simplified full 4-port
calibration
Required thru measurements
1-2, 1-3, 3-4
NOTE For the simplified full 4-port calibration, (Recommended) is displayed on the softkey of
the type of thru measurement that can be omitted. For example, when the omittable thru
measurement is 2-3,
the omittable thru measurement is the same as that for a required thru measurement, and
the display for the remaining omittable thru measurement is
For the simplified full 4-port calibration, up to three thru measurements can be omitted, but
it is recommended to perform two or more types of calibration because omitting all of them
results in poor accuracy.

Simplified 3/4-port TRL calibration

In the simplified 3/4-port TRL calibration, because the calibration coefficients are
calculated while omitting part of the thru/line measurement data and line/match
measurement data, the effect of errors when acquiring calibration data becomes larger than
in the normal 3/4-port TRL calibration. Therefore, you must give more attention to data
measurement for the simplified full 3/4-port calibration than for the ordinary 3/4-port TRL
calibration. For details, refer to "Simplified full 3/4-port calibration" on page 148.
The types of thru/line measurement and line/match measurement you can omit are
determined by the ports you select. Some types of measurement cannot be omitted.You
cannot omit thru/line measurement only or line/match measurement only, even for an
omittable measurement path.
The table below shows omittalbe measurements.
Table 4-4 Omittable measurements for simplified 3-port TRL calibration
Ports used
Ports 1, 2, 3
Ports 1, 2, 4
Ports 1, 3, 4
Ports 2, 3, 4
NOTE For the simplified 3-port TRL calibration, (Optional) is displayed on the softkey of the
omittable thru/line measurement. For example, when the omittable thru/line measurement
Chapter 4
is displayed. The display after the execution of the
2-3 (Optional)
Types of thru measurement that can be
omitted
1-4, 2-3, 2-4
is displayed.The display after the execution of
2-3 (Recommended)
Omittable measurement
2-3
2-4
1-4
2-4
Calibration
Simplified calibration
.
2-3 (Optional)
149