Designation:F1578−07(Reapproved2014)StandardTestMethodforContactClosureCyclingofaMembraneSwitch1ThisstandardisissuedunderthefixeddesignationF1578;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodcoversthesetup,procedure,andapparatusrequiredtodepressandreleaseamembraneswitchtoapredeterminednumberofcycles.1.2Thistestmethodalsocoverstheoptionaluseofspeci-fiedvoltageandcurrentduringthecyclingofthemembraneswitch.1.3ThistestmethodcanbeusedinconjunctionwithotherASTMstandardssuchasTestMethodF1596.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2D2240TestMethodforRubberProperty—DurometerHard-nessF1596TestMethodforExposureofMembraneSwitchestoTemperatureandRelativeHumidityF1661TestMethodforDeterminingtheContactBounceTimeofaMembraneSwitchF1662TestMethodforVerifyingtheSpecifiedDielectricWithstandVoltageandDeterminingtheDielectricBreak-downVoltageofaMembraneSwitchF1689TestMethodforDeterminingtheInsulationResis-tanceofaMembraneSwitchF1663TestMethodforDeterminingtheCapacitanceofaMembraneSwitchF1680TestMethodforDeterminingCircuitResistanceofaMembraneSwitchF2592TestMethodforMeasuringtheForce-DisplacementofaMembraneSwitch3.Terminology3.1Definitions:3.1.1contactclosure—theeventatwhichaspecifiedresis-tanceisachieved.3.1.2dutycycle—theratioofswitchclosedtimetototalcycletime.3.1.3testrate—thenumberofdepressionsandreleasecyclespersecond.3.1.4membraneswitch—amomentaryswitchingdeviceinwhichatleastonecontactison,ormadeof,aflexiblesubstrate.4.SignificanceandUse4.1Thistestingisperformedtodeterminetheelectricalcontactreliabilityund...
