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Trace functions, Data accuracy enhancement – Atec Agilent-E8364A User Manual

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Trace functions

Display data

Display current measurement data, memory data,
or current measurement with measurement and
memory data simultaneously.

Trace math

Vector addition, subtraction, multiplication or
division of current linear measurement values and
memory data.

Display annotations

Start/stop, center/span, or CW frequency,
scale/div, reference level, marker data, warning
and caution messages, trace status, and pass/fail
indication.

Title

Add custom titles (50 characters maximum) to
the display. Titles will be printed when making
hardcopies of displayed measurements.

Autoscale

Automatically selects scale resolution and reference
value to center the trace.

Electrical delay

Offset measured phase or group delay by a defined
amount of electrical delay, in seconds.

Phase offset

Offset measured phase or group delay by a defined
amount in degrees.

Data accuracy enhancement

Measurement calibration

Measurement calibration significantly reduces
measurement uncertainty due to errors caused by
system directivity, source and load match, tracking
and crosstalk. Full two-port calibration removes
all the systematic errors to obtain the most
accurate measurements.

Calibration types available

Frequency response
Simultaneous magnitude and phase correction of
frequency response errors for either reflection
or transmission measurements.

Response and isolation
Compensates for frequency response and directivity
(reflection) or frequency response and crosstalk
errors.

One-port calibration
Uses test set port 1 or port 2 to correct for directivity,
frequency response and source match errors.

Two-port calibration
Compensates for directivity, source match, reflection
frequency response, load match, transmission
frequency response and crosstalk. Crosstalk calibra-
tion can be omitted.

TRL/TRM calibration
Compensates for directivity, reflection and trans-
mission frequency response and crosstalk in both
forward and reverse directions. Provides the highest
accuracy for both coaxial and non-coaxial environ-
ments, such as on-wafer probing, in-fixture or
waveguide measurements.

Interpolated error correction

With any type of accuracy enhancement applied,
interpolated mode recalculates the error coeffi-
cients when the test frequencies are changed. The
number of points can be increased or decreased
and the start/stop frequencies can be changed, but
the resulting frequency range must be within the
original calibration frequency. System performance
is not specified for measurements with interpolated
error correction applied.

Velocity factor
Enters the velocity factor to calculate the equivalent
electrical length.

Reference plane extension
Redefine the plane-of-measurement reference to
other than port 1 or port 2.