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Agilent Technologies U1251A manual Press Pres s, 5dBm/dBV display mode operation

Models: U1251A

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Figure 3-5dBm/dBV display mode operation

58	Agilent U1251A/U1252A User’s and Service Guide

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Agilent Technologies U1251A manual Press Pres s, 5dBm/dBV display mode operation

Contents

Agilent U1251A U1252A Handheld Digital Multimeter U T I O N WA R N I N G Safety Symbols Safety Information WA R N I N G Never measure voltage when current measurement is selected Meter, and follow the correct polarityRegulatory Markings Product Category Affixed product label is as shown belowThis Guide… Declaration of Conformity DoC Contents Setting Percentage % Scale Readout Overload alertAdjustment is recommended Returning to Default Factory SettingsAgilent Technologies calibration services Calibration intervalAdjustment procedure Adjustments ConsiderationValid adjustment input values Calibration errors161 III Xviii List of Figures Reset setup List of Tables 159 Getting Started Introducing the U12521A/U1252A Handheld Digital MultimeterIntroducing the U12521A/U1252A Handheld Digital Multimeter Check the shipment Adjusting the tilt-stand IR-USB cable To PC host Tilt-stand at3Tilt-stand at hanging position Display Keypad Rotary switch Terminal Connectors Front panel at a glanceTilt-stand Battery access cover Rear panel at a glanceIR communication port Rotary switch at a glance 7U1252A keypad 2Keypad desciption and functions ButtonSets to Auto Range mode Display at a glance 3General display symbols LCD symbol Description4Priamry display symbols 5Secondary display symbols KHz6Analog bar range and counts 2500 Diode Ω, nSRange Counts/segments Used for the function Selecting display with the Hz button Hz Frequency counter press Frequency Hz Pulse width ms 7Selecting display with the Hz button Frequency HzDuty cycle % Frequency Hz Duty cycle % Hz Frequency counter press Frequency Hz 100By pressing Selecting display with the Dual button8Selecting display with the Dual button For U1251AAC a Hz AC coupling Rotary switch position Function Primary displaySelection display with the Shift button 9Selecting display with the Shift button9Selecting display with the Shift button For U1252A DC mV TempRotary switch position Input terminals Overload protection Terminals at a glanceMaking Measurements Understanding The Measurement InstructionsUnderstanding The Measurement Instructions 1Numerical steps descriptionsNo.Instructions Measuring AC voltage Red Lead Black LeadMeasuring DC voltage 2Measuring DC voltageMeasuring Current ΜA & mA measurementPress If necessary to ensure Black Lead Red Lead 3Measuring μA and mA currentPercentage scale of 4 mA to 20 mA Press2Percentage scale and measurement range 4Measuring scale of 4-20 mA Ampere measurement 5A ampere current measurementFrequency Counter 6Measuring frequency Measuring Resistance, Conductance and Testing Continuity Audible continuity 8Audible continuity, conductance, and resistance test3Audible continuity measurement range Measurement range Beeper sound threshold9Conductance measurement Testing Diodes 10Measuring forward bias of diode 11Measuring reverse bias of diode Measuring Capacitance Means the capacitor is charging Discharging12Capacitance measurements Measuring Temperature 14Connecting the probe with adapter into the multimeter Making Measurements 15Surface temperature measurement Alerts and Warning During Measurement Overload alertInput warning Charge terminal alert 17Charge terminal alertFunctions and Features Dynamic Recording Press to restart the dynamic recording1Dynamic recording mode operation 2Data hold mode operation Data Hold Trigger HoldRefresh Hold Press to return Null Relative 4Null relative mode operation Decibel Display Reference for other voltage measurements5dBm/dBV display mode operation Press Pres sTo re-start the peak-recording measurement Ms Peak HoldIf the reading is OL, press If you need to re-start the peak recording, press61 ms peak hold mode operation Data Logging Manual loggingFull Log Interval logging Are filled, Full is indicated on the secondary display9Interval Automatic logging mode operation Reviewing logged data 10Log review mode operation Square Wave Output for U1252A Frequency Hz11Frequency adjustment for square wave output Press 13Duty cycle adjustment for Square Wave Remote Communication Connect To PCFeatures and Functions Changing The Default Setting Setting Data BitSelecting Setup Mode 1Available setting options in Setup mode Menu Item Available setting optionsDisplay Description Swaps display to C Setting Data Hold/Refresh Hold Mode 1Data hold/Refersh hold setupSetting Data Logging Mode Press PressPressSetting Thermocouple Types U1252A only 3Thermocouple type setupSetting Reference Impedance for dBm Measurement 4Reference impedance for dBm measurement setupSetting Minimum Frequency Measurement 5Minimum frequency setupSetting Temperature Unit 6Temperature unit setup Setting Auto Power Saving Mode 7Auto power saving setup Setting Percentage % Scale Readout % scale readout setupSetting Beep Frequency 9Beep frequency setupSetting Backlight Timer 10Backlit timer setupSetting Baud Rate 11Baud rate setup remote controlSetting Parity Check 12Parity check setupSetting Data Bit 13Data bit setup for remote controlSetting Echo Mode 14Echo mode setup for remote controlSetting Print Mode 15Print mode setup for remote controlReturning to Default Factory Settings Press PressMaintenance General maintenance Battery replacementIntroduction List of compatible batteries for the Agilent U1251A List of of compatible batteries for the Agilent U1252ANominal voltage Charging the battery Storage considerationsMultimeter is to be unused for long periods of time U T I O N 2Battery capacity display as trickle Condition Battery voltage Proportional percentage2Error messages Error Error message4Charging mode Agilent U1251A/U1252A User’s and Service Guide 103 6Battery charging procedure Fuse checking procedure Figure aboveReplacing the fuse 3Measurement readings for fuse checking4Fuse specifications FuseFuse Agilent part number Rating Size Type Troubleshooting 5Basic troubleshooting proceduresMalfunction Troubleshooting procedure Replaceable Parts To order replaceable parts110 Agilent U1251A/U1252A User’s and Service Guide Closed- case electronic calibration Backlit testCurrent terminal test Agilent Technologies calibration services Calibration OverviewClosed-case electronic calibration Adjustment is recommended Calibration intervalRecommended Test Equipment 1Recommended Test EquipmentApplication Recommended equipment Testing the display Basic Operating TestBacklit test Setup Current terminal testCharge terminal alert test Test Considerations Calibration Security Performance Verification Tests Doing the performance verification testsError from nominal 1 year 2Performance verification test stepsStep Test Function Range U1251A ± 20 mV ± 17.5 mV 500 ± 200 mV 1000 ± 800 mV Agilent U1251A/U1252A User’s and Service Guide 123 ± 75 μV± 350 mW 33250A OutputStep Test Function Range 5520A Output Square Wave Use 53131A Output Use 34410AAgilent U1251A/U1252A User’s and Service Guide 127 Unsecuring the instrument for calibration To Unsecure the Instrument from the Front PanelAgilent U1251A/U1252A User’s and Service Guide 129 Tory default code using the front panel Calibration process Using the front panel for adjustments Selecting the Adjustment ModeAdjustments Consideration Problem and repeat the procedureCalibration memory for the present function Valid adjustment input values 3Valid adjustment input valuesFunction Range Valid Amplitude Input Values Adjustment procedure Simultaneously to exit the adjustment mode136 Agilent U1251A/U1252A User’s and Service Guide 4Adjustment table Step Test Function Cal Range Input Cal Item U1251A U1252A138 Agilent U1251A/U1252A User’s and Service Guide Agilent U1251A/U1252A User’s and Service Guide 139 Open Agilent U1251A/U1252A User’s and Service Guide 141 Finishing the adjustment To read the calibration countYour instrument was calibrated before it left the factory Calibration errors Number Recommended Accuracy Requirements144 Agilent U1251A/U1252A User’s and Service Guide Frequency Sensitivity Specifications Frequency Counter Specifications for U1252AProduct Characteristics Power SupplyAgilent U1251A/U1252A User’s and Service Guide 147 Calibration Cycle Measurement Category Measurement category definitionSpecification Assumptions Function Range Resolution Burden Voltage U1251A U1252A Electrical SpecificationsDC Specifications AccuracyMaximum open voltage + 4.2 AC Specifications Frequency Function Range ResolutionFrequency 20 Hz 45 Hz KHz 10 kHz Function Range Resolution 45 Hz KHz 10 kHz 20 kHzFunction Range Resolution Frequency Hz 45 Hz7U1252A true RMS ac+dc current specifications Function Range Resolution 45 Hz KHz 10 kHzFrequency 30 Hz 45 Hz KHz 8Capacitance specifications Capacitance SpecificationsTemperature Specifications 9Temperature specifications10Frequency specifications Frequency SpecificationsDuty Cycle and Pulse Width Specifications 11Duty cycle and pulse width specificationsModel Number U1251A U1252A Frequency Sensitivity SpecificationsMinimum sensitivity RMS sine wave 100 kHzPeak Hold Specifications Signal Width Accuracy For DC mV/voltage/currentInput Range 16Frequency counter divide by 100 4 specifications Frequency Counter Specifications for U1252A15Frequency counter divide by 1 specifications Sensitivity Min. Input Frequency17Square wave output specifications Square Wave Output for U1252AOutput Range Accuracy 18Display update rate approximate Operating SpecificationsDisplay update rate approximate Realtime clock. Only ONE sample per second can be loggedInput impedance 19Input Impedance164 Agilent U1251A/U1252A User’s and Service Guide Contact us