Where To Look For More Information; Increasing Measurement Accuracy; Connector Repeatability; Interconnecting Cables - Agilent Technologies 8719D User Manual

Where to Look for More Information

Additional information about many of the topics discussed in this chapter is located in the
following areas:
Chapter 2, "Making Measurements, n contains step-by-step procedures for making
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measurements or using particular functions.
Chapter 4, "Printing, Plotting, and Saving Measurement Results," contains instructions
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for saving to disk or to the analyzer internal memory, and printing and plotting displayed
measurements.
Chapter 6, "Application and Operation Concepts, n contains explanatory-style information
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about many applications and analyzer operation.

Increasing Measurement Accuracy

Connector repeatability is a source of random measurement error. Measurement
error-corrections do not compensate for these errors. For all connectors, you should frequently
do the following:
Inspect the connectors.
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Clean the connectors.
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Gauge the connectors.
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Use correct connection techniques. See Chapter 2 (Table 2-1).
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Cables connecting the device under test to the analyzer can contribute random errors to your
measurement. You should frequently do the following:
Inspect for damaged cable connectors.
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Minimize cable position changes between error-correction and measurements
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Inspect for cables which change magnitude or phase response when flexing (this may indicate
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an intermittent problem).
Electrical characteristics will change with temperature due to the thermal expansion
characteristics of devices within the analyzer, calibration devices, test devices, cables, and
adapters. Therefore, the operating temperature is a critical factor in their performance. During
a measurement calibration, the temperature of the calibration devices must be stable and
within 23 f3 "C.
Use a temperature-controlled environment.
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Ensure the temperature stability of the calibration devices.
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Avoid handling the calibration devices unnecessarily during calibration.
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Ensure the ambient temperature is f 1 OC of measurement error-correction temperature.
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