8
Measurement Calibration
Calibration significantly reduces measurement
uncertainty due to errors caused by system direc-
tivity, source match, reflection tracking and
crosstalk. These analyzers reduce systematic errors
with a built-in calibration so that measurements
can be made on many devices without performing
a user calibration. For greater accuracy, especially
for special test setups, the analyzers offer one-port
reflection calibration to remove reflection errors, a
response calibration to remove transmission track-
ing error and a response and isolation calibration
to remove transmission tracking and crosstalk
errors.
The interpolated mode recalculates the error coef-
ficients when the test frequencies or the number of
points are changed. The resulting frequency span
must be equal to or less than the user calibration
frequency span. System performance is not speci-
fied for measurements with interpolated error cor-
rection applied.
Calibrations Available
Transmission measurements
Normalization
Simultaneous magnitude and phase correction of
frequency response errors for transmission meas-
urements. Requires a through connection. Used for
both narrowband and broadband measurements.
Does not support interpolation.
Response
Simultaneous magnitude and phase correction of
frequency response errors for transmission meas-
urements. Requires a through connection.
Response and isolation
Compensates for frequency response and crosstalk
errors. Requires a load termination on reflection
and transmission ports and a through connection.
Reflection measurements
One-port calibration
Calibrates reflection port to correct directivity,
tracking and source match errors. Requires an
open, short, and load.
Calibration Kits
Data for several standard calibration kits are
stored in the instrument for use by calibration rou-
tines. They include:
• 3.5 mm (choose 85033C or 85033D)
• type-F 75 ohm (choose 85039A)
• type-N 50 ohm (choose 85032B/E)
• type-N 75 ohm (choose 85036B/E)
In addition you can also describe the standards
(for example, open-circuit capacitance coefficients,
offset short length, or fixed loads) of a user-
defined kit.
The following calibration kits available from
Agilent contain precision standards in many differ-
ent connector types. For further information, con-
sult the RF Economy Network Analyzer
Configuration Guide, literature number 5962-
9928E.
85032B/E 50 ohm type-N calibration kit
Contains precision 50 ohm type-N standards used
to calibrate the analyzer to measure devices with
50 ohm type-N connectors. E versions do not con-
tain adaptors or female standards.
85036B/E 75 ohm type-N calibration kit
Contains precision 75 ohm type-N standards to cal-
ibrate the analyzer to measure devices with 75
ohm type-N connectors. E versions do not contain
adaptors or female standards.
85039A type-F calibration kit
Contains 75 ohm type-F standards to calibrate the
analyzer to measure devices with type-F connec-
tors.
85033D Option 001 3.5 mm calibration kit
Contains precision 3.5 mm standards to calibrate
the analyzer to measure devices with 3.5 mm or
SMA connectors.
Calibration
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