Setting Averaging | HP Saw E4419B instruction

Power Meter Operation

Setting Averaging

Setting Averaging

The power meter uses a digital ﬁlter to average power readings. The number of readings averaged can range from 1 to 1024. This ﬁlter is used to reduce noise, obtain the desired resolution and to reduce the jitter in the measurement results. Increasing the value of the ﬁlter length reduces measurement noise. However, the time to take the measurement is increased. You can select the ﬁlter length or you can set the power meter to auto ﬁlter mode. The default is “AUTO”.

When the auto ﬁlter mode is enabled, the power meter automatically sets the number of readings averaged together to satisfy the ﬁltering requirements for most power measurements. The number of readings averaged together depends on the resolution and the power level currently being measured. Figure 2-9 lists the number of readings averaged for each range and resolution when the power meter is in auto ﬁlter mode and is set to normal speed mode (refer to the HP E4418B/E4419B Programming Guide for details of the readings averaged in the other speed modes).

Resolution is a window function and not a channel function. In the case where a channel is set up in both the upper and lower window and the resolution settings are different, the highest resolution setting is taken to calculate the averaging number. For example, if the upper window has a resolution setting of 2 and is measuring channel A - channel B and the lower window has a resolution of 4 and is measuring channel A. In this instance channel A averaging is calculated with a resolution of 4 and channel B with a resolution of 2.

HP E4419B User’s Guide

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HP Saw E4419B manual Setting Averaging

Contents

HP Part no. E4419-90006 December User’s GuidePage Warranty Legal InformationCertiﬁcation Exclusive Remedies Limitation of Warranty Equipment Operation Personal Safety Considerations Markings General Safety Considerations IEC 1010-1 Compliance Installation InstructionsStatement of Compliance User Environment Sound Emission Regulatory InformationAustralian EMC Regulations Herstellerbescheinigung Declaration of Conformity HP E4418B/E4419B Programming Guide is shipped as standard List of Related Publications HP E4419B Options Available Accessories About this Guide Table of Contents Page HP-IB Page List of Figures Contents-6 HP E4419B User’s Guide List of Tables Contents-8 HP E4419B User’s Guide Getting Started Introduction Connect the power cord and turn on the power meter Turning On the Power MeterConnect the power sensors Set the display contrast if required Hardkeys relating to the display layout Front Panel at a Glance Dedicated Window hardkeys with softkey menus System/Inputs hardkey with softkey menuDedicated Channel hardkeys with softkey menus Channel Inputs Arrow hardkeys Power REF OutputMenu related hardkeys Softkeys Display Layout Cal CFxxx.x% Xxx.xyHza Nn,a Reference Upper Lower Number Display Line HP E4419B User’s Guide Selecting Your Display Layout Display Tutorial HP E4419B User’s Guide Window Symbols Wait SymbolConﬁrmation Window Numeric or Alphanumeric Entry Window N Entry Window Rear Panel at a Glance Ground Connector Serial LabelRmt I/O Adjusting the Carrying Handle Rack Mounting the Power Meter Rack Mounting the Power Meter Power Meter Operation Power Meter Operation Battery Status Battery Operation OptionGeneral Information Running Time Backlight Charging Times Battery Removal/Replacement Battery Removal/Replacement Zeroing the Power Meter Zeroing and Calibrating the Power MeterWhen to Zero? Zero/Cal Lockout Calibration Procedure Using HP E-Series Power Sensors Calibrating the Power Meter Calibration Procedure using HP 8480 Series Power Sensors ExampleV8486A and W8486A sensors Models Zeroing and Calibrating the Power Meter Sensor Connection Requirements Model TTL Inputs Control Logic Operation Zeroing and Calibrating Using TTL Inputs Timing of zero/cal inputs for conditions 01 TTL Input Timing Diagram Timing of zero/cal inputs for condition TTL Inputs Timing Diagram Procedure Making Measurements with the HP E-Series Power Sensors Freq . Use Making Measurements with the HP 8480 Series Power Sensors Zero a Cal Cal Fac . Use Selecting a Sensor Calibration Table Making Measurements using Sensor Calibration Tables Sensor Tbls Screen Making the Measurement Editing Sensor Calibration Tables Edit Cal Screen Making Measurements using Sensor Calibration Tables You can only edit the table name you cannot delete it Default R8486A HP 8487A Selecting a Frequency Dependent Offset Table Making Measurements using Frequency Dependent Offset Tables Offset Tbls Screen Editing Frequency Dependent Offset Tables Edit Screen You delete the frequency the equivalent offset is also Setting the Units of Measurement Selecting Units of Measurement from the Softkeys Making Relative Measurements Setting the Resolution Setting Offsets Setting Channel OffsetsSetting Display Offsets Effect of Offsets on a Channel Measurement Setting Averaging 10 Averaged Readings Step Detection 11 Pulsed Signal Measuring Pulsed Signals To set the duty cycle Press Setting Channel Limits Setting Measurement Limits 12 Limits Checking Application Setting Window Limits Range of Values for Window Limits Max Min Default Units 14 Remote I/O TTL Outputs Checking for Limit Failures 15 Pass/Fail Limit Indicators Channel Measurements Making Difference Measurements Making Ratio Measurements 16 Digital Display Selecting a Digital or Analog Display Display Format Selecting a Digital or Analog Display Setting the Range HP-IB Address Conﬁguring the Remote Interface RS232/RS422 RS232/422 Connector Setting the RS232/422 Parameters Remote Interface Overview 20 Interface Overview Examples Programming Language Selection Recorder Outputs 21 Test Setup for Recording Swept Measurements Leveling a Source Output Saving and Recalling Power Meter Conﬁgurations 22 Save/Recall Screen Window Functions How Measurements are Calculated Preset Conditions Presetting the Power Meter Offset is set to 0.000 dB Is set to Off HP E4419B User’s Guide Self Test Power On Self Test Front Panel Selection of Self Tests Conﬁdence Check Instrument Self Test Remote Testing Test Descriptions Calibrator Option 001 BatteryKeyboard Front Panel only Display Bitmap Display Front Panel only Replacing the Power Line Fuse Operator Maintenance Before calling Hewlett-Packard Contacting Hewlett-Packard Instrument serial numbers Check the Basics OPT Sales and Service Ofﬁces Asia PaciﬁcJapan Canada Switzerland 01 735 South Africa 011 806United Kingdom 01344 366 Latin America Package the Power Meter For Shipment Returning Your Power Meter for Service HP E4419B User’s Guide Menu Reference Menu Reference DBm/W Menu Front Panel Menu Maps Frequency/Cal Fac Menu Meas Setup Menu Save/Recall Menu Rel/Offset Menu Auto System Inputs Menu 1 000W System Inputs Menu 2 Scpi System Inputs Menu 3 System Inputs Menu 4 Zero/Cal Menu Front Panel Menu Reference Freq Cal Fac Cal Fac Front Panel Menu Reference Meas/Setup Menu Meter Dgtl Anlg TTL Output Front Panel Menu Reference More, Preset/Local, Prev Keys Rel Save HP-IB RS422 RTS/CTS Echo Freq Dep Offset Linearity ATyp DTyp and B Linearity ATyp DTyp Duty Cycle Commonly used for troubleshooting. The default is Off Press this softkey to return to the System/Inputs menu Press this softkey to run a test on the internal cooling fan Serial Interface Set Contrast Backlight On Zero B Off Diagrammatical Hardkeys Is implemented in the selected window HP E4419B User’s Guide Error Messages Error Annunciator Position Error List then Clear Errors Error Messages Invalid character in number Undeﬁned headerExponent too large Too many digits Invalid string data Character data not allowedString data not allowed Invalid block data Settings conﬂict Parameter errorFrequency list must be in ascending orderSettings conﬂictDTR/DSR not available on RS422 Trigger deadlock Data corrupt or stalePlease zero and calibrate Channel a Data questionableCAL Error ChAData corrupt or stalePlease zero and calibrate Channel B Data corrupt or stalePlease zero Channel a Data questionableLower window log error Data questionableCAL Error ChBData questionableUpper window log error Data questionableZERO Error ChA System errorDetector Eeprom Read Failed critical data not System errorCh B Dty Cyc may impair accuracy with ECPSystem errorDetector Eeprom Read Completed OK but System errorDetector Eeprom Read Failed unknown Self-test FailedMeasurement Channel B Fault Self-test FailedMeasurement Channel a FaultSelf-test FailedOption 001 Battery requires replacement Self-test FailedRAM Battery Fault Parity error in program Self-test FailedSerial Interface FaultFraming error in program Queue overﬂow Speciﬁcations Speciﬁcations Meter Power Meter Speciﬁcations Zero Set Speciﬁcations Power Sensor AccuracyInstrumentation Power Reference Power OutputAccuracy Connector Power Meter Supplemental CharacteristicsMeasurement Speed Frequency Measurement Noise Zero Drift of SensorsNoise Multiplier Number Averages Zero Drift Measurement Noise Power Sensor Speciﬁcations Normal Mode X2 Mode For HP 8480 series power sensorsSettling Time Settling Time Number For HP E-series power sensors Normal Mode X2 Mode Maximum dBm Deﬁnitions Zero Set Power Sensor SpeciﬁcationsZero Drift Measurement Noise Battery Option 001 Operational Characteristics Rear Panel Connectors General Characteristics General Conditions Environmental CharacteristicsOperating Environment Storage Conditions Weight DimensionsSafety General Battery Non-Volatile MemoryHP-IB Compatibility HP E4419B User’s Guide Index Index-2 HP E4419B User’s Guide HP E4419B User’s Guide Index-3 Index-4 HP E4419B User’s Guide HP E4419B User’s Guide Index-5 Index-6 HP E4419B User’s Guide HP E4419B User’s Guide Index-7 Index-8 HP E4419B User’s Guide