Agilent Technologies ENA Series User Manual page 107

Table 4-1 Calibration Types and Characteristics
Calibration Method Standard(s)
Used
Simplified 3-port •Reflection
(open or short)
*5
TRL calibration
•Thru
•Line
•Match
4-Port TRL •Reflection
(OPEN or
*8
Calibration
SHORT)
•THRU
•LINE
•MATCH
Simplified 4-port •Reflection
(open or short)
*8
TRL calibration
•Thru
•Line
•Match
*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.
Chapter 4
Corrected Error Factor
Same as 3-port TRL calibration
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)
Same as 4-port TRL calibration
Calibration Types and Characteristics
Measurement Characteristics
Parameters
S11, S21, S31, •High-accuracy 3-port
S12, S22,
*7
measurement
[S32], S13,
•Efective for non-coaxial device
[S23], S33
measurement
(Part of thru
•Simpler procedure by skipping
(or line) and
thru/line/match measurement
line (or match)
measurement
can be
skipped)
S11,S21,S31,S •Highly accurate 4-port
41,S12,S22,S3 measurement
2,S42,S13,S23 •Effective for non-coaxial device
,S33,S43,S14, measurement
S24,S34,S44
(All
S-parameters
at 4 ports)
S11, S21, S31, •High-accuracy 4-port
[S41], S12,
*7
measurement
S22, [S32],
•Effective for non-coaxial device
[S42], S13,
measurement
[S23], S33,
•Simpler procedure by skipping
S43, [S14],
thru/line/match measurement
[S24], S34,
S44
(Part of thru
(or line) and
line (or match)
measurement
can be
skipped)
Calibration
101