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ESR MEASUREMENTS

Use the ESR measurement to measure the equivalent series 

resistance of a capacitor independent of its capacitance. 

Test frequency

0.1kHz/1 kHz/10kHz

Test signal amplitude

0.25/0.5/1.0Vrms Sine wave

Source impedance

62.5

Ω

/1k

Ω

/16k

Ω

Test period

1 Sec (default)

Equivalent circuit diagram

Serial

MEASURING IMPEDANCE (|Z|)

All circuit components, resistors, capacitors, and inductors 

have parasitic components. Thus, simple components 

should be modeled as complex impedances. 

Test frequency

0.1kHz/1 kHz/10kHz

Test signal amplitude

0.25/0.5/1.0 Vrms Sine wave

Source impedance

62.5

Ω

/1k

Ω

/16k

Ω

Test period

1 Sec (default)

Equivalent circuit diagram

Serial

MAINTENANCE

GENERAL MAINTENANCE: 

Dirt or moisture on the 

tips may affect measurement accuracy. Clean the tips 

regularly. Do not use abrasives or solvents. 

To clean the tips: 
1.  Shake off any dirt that may be on the tips. 
2.  Soak a swab in alcohol. Work the swab around each tip.

Summary of Contents for st5

Page 1: ...3...

Page 2: ......

Page 3: ...ntrols 6 PowerOn 7 MenuStructuresAndFunctions 9 MeasurementFeatures 20 MeasuringResistance 20 MeasuringCapacitance 20 MeasuringInductance 21 Maintenance 22 Labelling VerificationRequirements 23 Append...

Page 4: ...ITY OF THE BATTERIES OR PROBLEMS ARISING FROM NORMAL WEAR OR FAILURE TO FOLLOW INSTRUCTIONS THIS WARRANTY DOES NOT COVER LCD DAMAGE PHYSICAL DAMAGE TO THE JOG DIAL BUTTON SLIDE SWITCH AND RESET SWITCH...

Page 5: ...sing Donotusethedeviceifitappearstobedamaged Do not use the device if it operates abnormally Do not attempt to measure any components in circuit when your circuit is alive or active Toavoidpossibledam...

Page 6: ...ice STiscapableofmeasuringresistance capacitance orinductanceoverarangeofmorethan8ordersof magnitude Thedevicehasabasicaccuracybetterthan 0 2 resistance andoperatesatfourtestfrequencies SmartTweezersi...

Page 7: ...ntconversionresistorRi The outputofAIprovidesasignalproportionaltothecurrent I Ri VoltageacrosstheDUTismeasuredbyaseparatesignalpath amplifierAU thusprovidingapseudo4 wireKelvinconnection Voltageandcu...

Page 8: ...asurementranges R1 R3 Eachof thethreerangeshasthesourceimpedanceofapproximately themid scaleimpedance Thetablebelowspecifiesthe impedancerangesforeachofthemeasurementranges Range SourceR DUTImpedance...

Page 9: ...ontrolsallowchangingtestparametersormodes withoutenteringthegeneralmenubymovingtheNavigation ControllerUP DOWN LEFTandRIGHTasshownbelow Thefollowingtablesummarizesfunctionsof theNavigationControllermo...

Page 10: ...ncontrolleris operatedforapproximately30seconds defaultvalue Thepowerofftimeoutvaluecanbesetbychanging theTIMEOUTsettingintheSYSTEMmenu Thedefaultpower offtimeoutis30secondsina measurementmodeand30sec...

Page 11: ...odeindicateAuto Resistance Inductance Capacitance ImpedanceandESR measurementandDiodeTestmoderespectively DISPLAYEDPARAMETERS Themeasurementmodesetting R L R C R C D L Q Z ESRandAUTO determinesthemeas...

Page 12: ...eal and thusalowD Z MODE TheImpedanceofthecomponentisshown onPrimaryDisplay Unitsarem k orM ESRMODE Theequivalentseriesresistanceofthecapacitoris shownonthePrimaryDisplay ESRunitsarem k orM AUTOMODE S...

Page 13: ...erUPorDOWNtomovecursor tothedesiredmenuitemandPRESSittoselecttheitem TheCurrentSettingcursorindicatesthecurrentsetting MAINMENU MainmenuisusedtoaccessSystemmenu Measurementmenuorto restoremeasurementp...

Page 14: ...esoundforallfunctionsexceptforthe NavigationControlleroperation SelectR TONEtoenableaspecialmodewhenbeepfrequencyvaries dependingonthemeasuredresistancevalueintheResistanceMode seetheMeasurementMenuse...

Page 15: ...adjustdisplaycontrast MoveNavigation ControllerUPorDOWNtochangecontrast PRESS toexitmenuattheadjustedcontrastlevel TIMEOUT SelectTIMEOUTtoadjustthetimeoutbeforetheunitgoesto sleepmode MoveNavigationCo...

Page 16: ...SUREMENTMENU Measurementmodesandsettings MODEMENU TheModemenuisusedtosetthemeasurementmode SelectRES IND CAP IMPorESRmenuitemstomeasuredesirablecomponentor parameterasResistance Inductance Capacitance...

Page 17: ...tion INDUCTANCEMODE EnablesCapacitancemeasurementmode SeesectionMEASUREMENTFEATURESformoreinformation CAPACITANCEMODE EnablesCapacitancemeasurementmode SeesectionMEASUREMENTFEATURESformoreinformation...

Page 18: ...stfrequency RDQMENU Usethismenutosetsecondarydisplayparameter Thefollowingcombinationsareallowed C R capacitance resistance C D capacitance dissipation factor L R inductance resistances L Q inductance...

Page 19: ...esistive componentinseriesorinparallelwithareactivecomponent Dependinguponthecharacteristicsofthecomponenttheseriesor parallelmodelwillbemoreaccurate Inmostcases partsarebest approximatedbytheseriesmo...

Page 20: ...SmartTweezerswilldisplaydifferenceinpercentfrom thereferencevalueandthebeeperwillbeep 1 time when the component is within the setting tolerance 3 times whenever the component under test exceeds the se...

Page 21: ...t value by measuring a component or by nulling test leads see examples below Enter the NULL menu and select SET Example1 Nullingtestleadsforsmallresistancemeasurement Select manual R measurement mode...

Page 22: ...D mode see HOLD menu Enter the NULL menu and select ZERO ToresettheNULLmodecompletelyselectAUTOSETfrom themainmenuorDEFAULTfromtheSETTINGSmenu HOLDMENU Allowstoholdlastreadingondisplay PERIODMENU Peri...

Page 23: ...n25m andmay increaseifthegoldonthetweezertipswearsout Theoffset valueshouldbeusedincalculationoftheactualresistance MEASURINGCAPACITANCE Test frequency 0 1kHz 1 kHz 10kHz Test signal amplitude 0 25 0...

Page 24: ...s Componentsize Offset pF 1206 0 58 0805 0 6 0603 0 65 0402 0 7 MEASURINGINDUCTANCE Test frequency 0 1kHz 1 kHz 10kHz Test signal amplitude 0 25 0 5 1 0 Vrms Sine wave Source impedance 62 5 1k 16k ohm...

Page 25: ...istors capacitors andinductors haveparasiticcomponents Thus simplecomponents shouldbemodeledascompleximpedances Test frequency 0 1kHz 1 kHz 10kHz Test signal amplitude 0 25 0 5 1 0 Vrms Sine wave Sour...

Page 26: ...e performedinordertotroubleshoottheproblem 1 Check battery voltage and recharge if necessary 2 Review this manual for possible mistakes in the operating procedure 3 Reset device by reconnecting batter...

Page 27: ...ve Source impedance 62 5 1k 16k 1 TYPICALOFFSET Resistance 25 m Capacitance 0 65 pF Inductance 0 1 uH Offsetvalueshouldbesubtractedfrommeasurementresultfor smallvaluecomponents R 10 C 100pF L 10 H MEA...

Page 28: ...Phase angle F 0 1 deg indicationoftheparameternotimplementedinsome versions Auto mode Read out Dominant parameter Equivalent circuit diagram Serial Parallel for C R Serial for L R Manual Mode Read ou...

Page 29: ...No change APPENDIXC ACCURACYSPECIFICATION RESISTANCE IMPEDANCE Range Resolution 100Hz 1kHz 10kHz 1R 0 001R 0 7 50 0 7 50 0 7 50 10R 0 01R 0 7 8 0 7 8 0 7 8 100R 0 01R 0 2 3 0 2 3 0 2 3 1000 0 1R 0 2...

Page 30: ...5 0 2 3 0 5 3 1000pF1 0 1pF NA NA 0 5 5 0 5 3 100pF1 0 01pF NA NA 0 5 10 0 8 20 10pF1 0 001pF NA NA NA 1 0 50 Accuracyfortherangesof10pF 1000pFiSspecifiedaftersubtractofthestray capacitancesfortestle...

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