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HP Saw E4419B Zeroing and Calibrating the Power Meter, Zeroing the Power Meter, Zero/Cal Lockout

Models: Saw E4419B

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Power Meter Operation

Zeroing and Calibrating the Power Meter

Zeroing and Calibrating the Power Meter

This section describes how to zero and calibrate the power meter. You should always zero the power meter prior to calibrating it.

Zeroing the Power Meter

Zeroing adjusts the power meter for a zero power reading with no power applied to the power sensor. During zeroing, which takes approximately 10 seconds, the wait symbol is displayed.

To zero the power meter:

1.Press ZerCalo .

2.To zero channel A or channel B use Zero A or Zero B respectively. Alternatively, to zero both channel A and channel B sequentially, use Zero Both . During zeroing the wait symbol is displayed.

When to Zero?

Zeroing of the power meter is recommended:

•when a 50C change in temperature occurs.

•when you change the power sensor.

•every 24 hours.

•prior to measuring low level signals. For example, 10 dB above the lowest speciﬁed power for your power sensor.

Zero/Cal Lockout

The Zero/Cal Lockout facilty provides a means of ensuring that a measurement cannot be taken until the connected sensor has been zeroed and calibrated. If the Zero/Cal Lockout facilty is enabled and a sensor is connected which has not been zeroed and calibrated, then the display window for the sensor will display the message “Please Zero + Cal ChA” or “Please Zero + Cal ChB” depending on which channel the sensor is connected to.

If you zero the sensor before calibrating it, the message changes to “Please Cal ChA” or “Please Cal ChB” depending on which channel the sensor is connected to.

HP E4419B User’s Guide

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HP Saw E4419B manual Zeroing and Calibrating the Power Meter, Zeroing the Power Meter, Zero/Cal Lockout, When to Zero?

Contents

HP Part no. E4419-90006 December User’s GuidePage Certiﬁcation WarrantyLegal Information Exclusive Remedies Limitation of WarrantyEquipment Operation Personal Safety ConsiderationsMarkings General Safety ConsiderationsUser Environment Installation InstructionsIEC 1010-1 Compliance Statement of ComplianceHerstellerbescheinigung Regulatory InformationSound Emission Australian EMC RegulationsDeclaration of Conformity HP E4418B/E4419B Programming Guide is shipped as standard List of Related PublicationsHP E4419B Options Available AccessoriesAbout 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 Set the display contrast if required Turning On the Power MeterConnect the power cord and turn on the power meter Connect the power sensorsHardkeys relating to the display layout Front Panel at a GlanceChannel Inputs System/Inputs hardkey with softkey menuDedicated Window hardkeys with softkey menus Dedicated Channel hardkeys with softkey menusSoftkeys Power REF OutputArrow hardkeys Menu related hardkeysDisplay Layout Cal CFxxx.x% Xxx.xyHza Nn,a Reference Upper Lower Number Display LineHP E4419B User’s Guide Selecting Your Display Layout Display Tutorial HP E4419B User’s Guide Conﬁrmation Window Window SymbolsWait Symbol Numeric or Alphanumeric Entry Window N Entry WindowRear Panel at a Glance Rmt I/O Ground ConnectorSerial Label Adjusting the Carrying Handle Rack Mounting the Power Meter Rack Mounting the Power Meter Power Meter Operation Power Meter Operation Running Time Battery Operation OptionBattery Status General InformationBacklight Charging TimesBattery Removal/Replacement Battery Removal/Replacement Zero/Cal Lockout Zeroing and Calibrating the Power MeterZeroing the Power Meter When to Zero?Calibration Procedure Using HP E-Series Power Sensors Calibrating the Power MeterV8486A and W8486A sensors Calibration Procedure using HP 8480 Series Power SensorsExample Models Zeroing and Calibrating the Power Meter Sensor Connection Requirements Model TTL Inputs Control Logic Operation Zeroing and Calibrating Using TTL InputsTiming of zero/cal inputs for conditions 01 TTL Input Timing DiagramTiming of zero/cal inputs for condition TTL Inputs Timing DiagramProcedure Making Measurements with the HP E-Series Power SensorsFreq . 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 TablesSensor Tbls Screen Making the MeasurementEditing 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 TablesOffset 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 Display Offsets Setting OffsetsSetting Channel Offsets Effect of Offsets on a Channel Measurement Setting Averaging 10 Averaged Readings Step Detection 11 Pulsed Signal Measuring Pulsed SignalsTo set the duty cycle Press Setting Channel Limits Setting Measurement Limits12 Limits Checking Application Setting Window LimitsRange 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 DisplayDisplay Format Selecting a Digital or Analog Display Setting the Range HP-IB Address Conﬁguring the Remote InterfaceRS232/RS422 RS232/422 ConnectorSetting the RS232/422 Parameters Remote Interface Overview 20 Interface Overview Examples Programming Language Selection Recorder Outputs 21 Test Setup for Recording Swept MeasurementsLeveling a Source Output Saving and Recalling Power Meter Conﬁgurations 22 Save/Recall Screen Window Functions How Measurements are CalculatedPreset Conditions Presetting the Power MeterOffset is set to 0.000 dB Is set to Off HP E4419B User’s Guide Self Test Power On Self TestFront Panel Selection of Self Tests Conﬁdence Check Instrument Self TestRemote Testing Test Descriptions Display Option 001 BatteryCalibrator Keyboard Front Panel onlyBitmap Display Front Panel only Replacing the Power Line Fuse Operator MaintenanceBefore calling Hewlett-Packard Contacting Hewlett-PackardInstrument serial numbers Check the BasicsOPT Japan Sales and Service OfﬁcesAsia Paciﬁc Canada Latin America South Africa 011 806Switzerland 01 735 United Kingdom 01344 366Package the Power Meter For Shipment Returning Your Power Meter for ServiceHP E4419B User’s Guide Menu Reference Menu Reference DBm/W Menu Front Panel Menu MapsFrequency/Cal Fac Menu Meas Setup Menu Save/Recall Menu Rel/Offset MenuAuto System Inputs Menu 1000W System Inputs Menu 2Scpi System Inputs Menu 3System 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 Too many digits Undeﬁned headerInvalid character in number Exponent too largeInvalid block data Character data not allowedInvalid string data String data not allowedTrigger deadlock Parameter errorFrequency list must be in ascending orderSettings conﬂict Settings conﬂictDTR/DSR not available on RS422Data corrupt or stalePlease zero Channel a Data questionableCAL Error ChAData corrupt or stalePlease zero and calibrate Channel a Data corrupt or stalePlease zero and calibrate Channel BData questionableZERO Error ChA Data questionableCAL Error ChBData questionableLower window log error Data questionableUpper window log errorSystem errorDetector Eeprom Read Failed unknown System errorCh B Dty Cyc may impair accuracy with ECPSystem errorDetector Eeprom Read Failed critical data not System errorDetector Eeprom Read Completed OK butSelf-test FailedRAM Battery Fault Self-test FailedMeasurement Channel a FaultSelf-test FailedMeasurement Channel B Fault Self-test FailedOption 001 Battery requires replacementQueue overﬂow Self-test FailedSerial Interface FaultParity error in program Framing error in programSpeciﬁcations Speciﬁcations Meter Power Meter SpeciﬁcationsInstrumentation Zero Set Speciﬁcations Power SensorAccuracy Accuracy Power ReferencePower Output Frequency Power Meter Supplemental CharacteristicsConnector Measurement SpeedAverages Zero Drift of SensorsMeasurement Noise Noise Multiplier NumberZero Drift Measurement Noise Power Sensor SpeciﬁcationsSettling Time Number For HP 8480 series power sensorsNormal Mode X2 Mode Settling TimeFor HP E-series power sensors Normal Mode X2 Mode Maximum dBm Measurement Noise Power Sensor SpeciﬁcationsDeﬁnitions Zero Set Zero DriftBattery Option 001 Operational Characteristics Rear Panel Connectors General CharacteristicsStorage Conditions Environmental CharacteristicsGeneral Conditions Operating EnvironmentGeneral DimensionsWeight SafetyHP-IB Compatibility BatteryNon-Volatile Memory 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