6-11
Calibrating for Increased Measurement Accuracy
Procedures for Error Correcting Your Measurements
NOTE Response calibration is not as accurate as other calibration methods.
Enhanced Response
and Enhanced
Reflection
Transmission or
reflection
measurement when
improved accuracy is
desired. Not as
accurate as 2-port
calibration.
Directivity, source
match, and frequency
response for
reflection. Frequency
response, source
match, and isolation
for transmis sion.
Enhanced reflection
corrects for load
match on bilateral
devices.
Short, open, load, a nd
thru or ECal module.
S11 1-port Reflection of any
one-port device or
well terminated
two-port device.
Directivity, source
match, frequency
response.
Short, open and load
or ECal module.
S22 1-port
(ES Analyzers Only)
Reflection of any
one-port device or
well terminated
two-port device.
Directivity, source
match, frequency
response.
Short, open and load
or ECal module.
Full 2-port
(ES Analyzers Only) Transmission or
reflection of highest
accuracy for two-port
devices.
Directivity, source
match, load match,
isolation, frequency
response, forward and
reverse.
Short, open, load and
thru (2 loads for
isolation) or ECal
module
TRL*/LRM*
(ES Analyzers Only) Transmission or
reflection in
noncoaxial
environment such as
in a fixture or
on-wafer.
Directivity, isolation,
frequency response.
(forward and reverse)
Thru, reflect, line, or
line, reflect, match, or
thru, reflect, match.
TRL/LRM
(ES analyzers with
Option 400 only)
Transmission or
reflection in
noncoaxial
environments. More
accurate than
TRL*/LRM*.
Directivity, isolation,
frequency response.
(forward and reverse)
Thru, reflect, line, or
line, reflect, match, or
thru, reflect, match.
Table6-2 Purpose and Use of Different Error Correction Procedures
Correction Procedure Corr esponding
Measurement Errors Corrected Standard Devices