Redefining A Calibration Kit - Agilent Technologies E5071C Manual

C2 unit: (Farads/Hz
C3 unit: (Farads/Hz
L0, L1, L2, L3
It is extremely rare for a SHORT standard to have perfect reflection
characteristics at high frequencies. This is because the residual inductance
of the standard causes a phase shift that varies along with the frequency.
It is not possible to eliminate this effect. For internal calculation of the
analyzer, a short-circuit inductance model is used. This model is described
as a function of frequency, which is a polynomial of the third degree.
Coefficients in the polynomial may be defined by the user. The formula for
the inductance model is shown below.
F: Measurement frequency
L0 unit: [Henry] (the constant in the polynomial)
L1 unit: [Henry/Hz]
L2 unit: [Henry/Hz
L3 unit: [Henry/Hz
In most existing calibration kits, THRU standards are defined as "zero-
length THRU," i.e., the delay and loss are both "0". Such a THRU standard
does not exist, however. Calibration must be done with two test ports
interconnected directly.
The measurement accuracy depends on the conformity of the
•
calibration standard to its definition. If the calibration standard
has been damaged or worn out, the accuracy will decrease.

Redefining a Calibration Kit

This section provides the procedure to change the definition of a calibration
kit.
Procedure to select and define a calibration kit
•
Procedure to select the standard type and define standard coefficient
•
Procedure to define standard class
•
Procedure to select and define a calibration kit
1. Press
Cal
2. Click Cal Kit, then select the calibration kit to be redefined. If the
names (labels) of calibration kits were changed prior to operation,
the new names will appear on the respective softkeys.
2
)
3
)
2
]
3
]
key.
Measurement
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