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Download 8753ES Option 011 Network Analyzer User`s
Transcript
Optimizing Measurement Results Increasing Measurement Accuracy Increasing Measurement Accuracy The following all contribute to loss of accuracy in a measurement. Interconnecting Cables Cables that connect the device under test (DUT) to the analyzer are often the most significant contribution to random errors of your measurement. You should frequently perform the following steps as a precaution against errors caused by cable interconnections: • Inspect for lossy cables. • Inspect for damaged cable connectors. • Practice good connector care techniques. • Minimize cable position changes between error-correction and measurements. • Inspect for cables which dramatically change magnitude or phase response when flexed. (This may indicate an intermittent problem.) Improper Calibration Techniques Calibrations techniques performed improperly contribute to random errors to your measurement. You should frequently perform the following steps as a precaution against errors caused by calibration techniques: • Verify the correct calibration kit definition is selected. • Verify the correct standards have been connected. Sweeping Too Fast for Electrically Long Devices It is possible to sweep too fast for electrically long devices. This will result in measurement error. Refer to "Making Accurate Measurements of Electrically Long Devices" on page 5-7. Connector Repeatability Connector repeatability is a source of random measurement error. Measurement error-corrections do not compensate for these errors. For all connectors, you should frequently perform the following steps as a precaution against errors caused by connector repeatability: • Inspect the connectors. • Clean the connectors. • Gauge the connectors. • Use correct connection techniques. (Refer to "Taking Care of Microwave Connectors" on page 5-3.) 5-4
