Chapter 4 101
Calibration
Calibration Types and Characteristics
4. Calibration
Simplified 3-port
TRL calibration
*5
•Reflection
(open or short)
•Thru
•Line
•Match
Same as 3-port TRL calibration S11, S21, S31,
S12, S22,
[S32], S13,
[S23], S33
(Part of thru
(or line) and
line (or match)
measurement
can be
skipped)
•High-accuracy 3-port
measurement
*7
•Efective for non-coaxial device
measurement
•Simpler procedure by skipping
thru/line/match measurement
4-Port TRL
Calibration
*8
•Reflection
(OPEN or
SHORT)
•THRU
•LINE
•MATCH
Following 48 error terms:
•Directivity (Ed1,Ed2,Ed3,Ed4)
•Source Match (Es1,Es2,Es3,Es4)
•Load Match (El1,El2,El3,El4)
•Transmission Tracking
(Et21,Et31,Et41,Et12,Et32,Et42,E
t13,Et23,Et43,Et14,Et24,Et34)
•Reflection Tracking
(Er1,Er2,Er3,Er4)
S11,S21,S31,S
41,S12,S22,S3
2,S42,S13,S23
,S33,S43,S14,
S24,S34,S44
(All
S-parameters
at 4 ports)
•Highly accurate 4-port
measurement
•Effective for non-coaxial device
measurement
Simplified 4-port
TRL calibration
*8
•Reflection
(open or short)
•Thru
•Line
•Match
Same as 4-port TRL calibration S11, S21, S31,
[S41], S12,
S22, [S32],
[S42], S13,
[S23], S33,
S43, [S14],
[S24], S34,
S44
(Part of thru
(or line) and
line (or match)
measurement
can be
skipped)
•High-accuracy 4-port
measurement
*7
•Effective for non-coaxial device
measurement
•Simpler procedure by skipping
thru/line/match measurement
*1.The user may select whether or not to carry out isolation calibration.
*2.A general principle is to use an open standard if the impedance of the device is larger than 50 Ω and a SHORT
standard if it is less.
*3.Only when isolation calibration is carried out. Isolation calibration is not performed when the 2-port ECal module
and ECal Assistant VBA macro are used.
*4.ECal, using the internal through, is less accurate than a mechanical through in transmission measurements if the
latter is a perfect zero-length through. Otherwise, ECal is equal to or more accurate than a mechanical through,
except for the mechanical TRL precision cal kits.
*5.Only for options 313, 314, 413, and 414.
*6.Used with the EcalAssistant VBA macro pre-installed in the E5070B/E5071B.
*7.In the simplified calibration, because the calibration coefficients are calculated while omitting part of thru mea-
surement data, the effect of errors when acquiring calibration data becomes larger than in the normal full 3/4-port
calibration or 3/4-port TRL calibration.
*8.Only for options 413 and 414.
Table 4-1 Calibration Types and Characteristics
Calibration Method Standard(s)
Used
Corrected Error Factor Measurement
Parameters
Characteristics
To Next Page
Loading...
