HP_4262A_Section_4

Model 4262ASection IVParagraphs 4-1 to 4-8SECTION IVPERFORMANCE TESTS4-1.INTRODUCTIONrotary switch.If models 16361A/16362A areunavailable,use the discrete components rec-4-2.This section provides the check proceduresommended in Table 4-1.to verify the 4262A specificationslisted inTable 1-1.All tests can be performed without ac-Notecess to the interior of the instrument.A simpleroperational test is presented in Section III underAll components used as standardsSelf Test (paragraph 3-5).The performanceshould be calibrated by an instru-test procedures in this section can also be used toment whose specifications aredo an incoming inspection of the instrument andtraceable to NBS,PTB,LNE,NRC,to verify whether the instrument meets its speci-JEMIC,or equivalent standardsfied performance after troubleshooting or makinggroup;or all components should beadjustments.If specifications are found to be outcalibrated directly by an authorizedof limits,check that controls are properly set,andcalibration organization such asthen proceed to adjustments or troubleshooting.NBS.The calibration cycle shouldbe determined by the stability spec-Noteification for each component.Allow a 15-minute warm-up and4-5.TEST RECORD.stabilization period before conduct-ing any performance test.4-6.Results of the performance tests may be tabu-lated on the Test Record at the end of these proce-4-3.EQUIPMENT REQUIRED.dures.The Test Record lists all the tested specifica-tions and their acceptable limits.Test results re-4-4.Equipment required for the performance testscorded at incoming inspection can be used foris listed in Table 1-4 Recommended Test Equip-comparison in periodic maintenance and trouble-ment in Section I.Any equipment whoseshooting and after repairs or adjustments.characteristics equal the critical specifications givenin the table may be substituted for the recom-4-7.CALIBRATION CYCLE.mended model(s).4-8.This instrument requires periodic verificationAccuracy checks in this section use standardof performance.Depending on the use and envir-LCR components as the samples to be connectedonmental conditions,the instrument should beto the 4262A.Accessories 16361A and 16362Achecked with the following performance tests atcan be utilized for this purpose.These accessoryleast once every year.To maximize the "up time"models are DUT (device under test)boxes fromof the instrument,the recommended preventivewhich the desired component can be selected andmaintenance frequency for the 4262A is twice aconnected to the 4262A through cables by use of ayear.41