Agilent Technologies E9300 manual Speed and Averaging, Summary

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Measurement Accuracy and Speed

power path (-10 dBm to +20 dBm) should be used to ensure a more accurate measurement of this signal. However, range holding in “UPPER” (the high power path), for a more accurate measurement, results in considerably more filtering.

Speed and Averaging

The same signal also requires that consideration is given to measurement speed. As shown above, in autoranging mode the Agilent EPM series power meter selects the low power path in the Agilent E-series E9300 power sensor. With auto-averaging also configured, minimal filtering is applied. Values of 1 to 4 for average power levels above -20 dBm are used in the low power path. (Refer to “Auto-averaging Settings” on page 21.)

If the range is held in “UPPER” for more accuracy, the measurement is slower. More filtering is applied due to the increase in noise susceptibility at the less sensitive area of the high power path. Values of 1 to 128 for average power levels less than -10 dBm are used. (Again, refer to “Auto-averaging Settings” on page 21.) Manually lowering the filter settings speeds up the measurement but can result in an unwanted level of jitter.

Summary

Attention must be paid to signals whose average power levels are in the low power path range whilst their peaks are in the high power path range. You can achieve best accuracy by selecting the high power path or best speed by selecting the low power path.

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Contents Operating and Service Guide Copyright 1999 Agilent Technologies Warranty Legal InformationCertification Limitation of Warranty Exclusive RemediesGeneral Safety Information Sound EmissionSafety Power Meter Front Panel OperationConventions Documentation Sensors Covered by ManualRelated Publications Documentation Table of Contents Standing Wave Ratio SWR and Reflection Coefficient Rho Per Introduction Typical HP E-series E9300 power sensors Power Meter Requirements General InformationAgilent E-Series E9300 Power Sensors in Detail Simplified Block Diagram of Diode Pair/Attenuator/Diode PairGeneral Information Checking Power Meter Firmware and DSP Revision Getting StartedInitial Inspection Interconnections and Calibration Specifications Making Measurements What You’ll Find This Chapter Power Meter Configuration Changes Auto-averaging SettingsMeasuring Spread Spectrum and Multitone Signals Spread Spectrum SignalCdma Signal Measurements Cdma IS-95A 9Ch FwdMultitone Signal Measurements 90 % Frequency GHz Typical Lower Range Calibration FactorMeasuring Tdma Signals Power Meter and Sensor OperationAchieving Stable Results with Tdma Signals Achieving Stable Results with GSM Signals Input Settings , MoreElectromagnetic Compatibility EMC Measurements Setting the Range Measurement Accuracy and SpeedMeasurement Considerations AccuracySpeed and Averaging SummarySpecifications and Characteristics Sensor Low Power Path High Power Path IntroductionE9300/1/4/A Power Sensor Specifications Connector TypeMaximum SWR 0C to +55C Maximum Power Maximum DC VoltagePower Linearity ± 2.5%Typical Power Linearity at 25C, after zero Additional Power Switching Point Zero Set Zero Drift Measurement NoiseSettling Time Time E4418B E4419BX2 Mode Calibration Factor and Reflection CoefficientCal Factor Uncertainty General E9300/1B and H Power Sensor Specifications Frequency RangeE9300B Typical SWR 25C ± 10C E9300H Typical SWR 10 MHz to 18 GHz 25C ± 10C Maximum Power Sensor To 35 C To 55 C GHz E9300/1B To 0 dBm To 10 dBm 10 to 20 dBm 20 to 26 dBm For larger changes refer to the following table E9300/1H DBm to 0 dBm +44 +30 dBm E9300/1B Conditions Zero Set Zero Drift2 Measurement Settling Time Typical Cal Factor Uncertainty Low Power Path Cal Factor Uncertainty High Power Path References Storage and Shipment EnvironmentE9300/1B and H Power Sensor Specifications Service Cleaning Connector CleaningPerformance Test Frequency System Rho Actual Maximum Uncertainty MeasurementPerformance Test Replaceable Parts Is the illustrated parts breakdown IPB that identifies allIllustrated Parts Break down Reference Agilent Part Qty Description Designation Number LABEL, ID E9301B Service Principles of OperationTroubleshooting Disassembly ProcedureRepair of Defective Sensor Reassembly Procedure Removing Power Sensor ShellSales and Service Offices Asia PacificEurope