示波器说明书?
19.NORM/INVERT
SelectsCHIoperatinginnormalorinvertedform,thiscombinedwithI+Ⅱcanoperateaddorsubtractforinputsignals.
20.C.T.
C.T.istheabbreviationofcomponenttest,itisanapplicationofoscilloscopefortestingFET.Transistor.Diode,Zener,Inductor,Capacitoretc.whichareinworkingordamaged.
Onthisoscilloscopethetestedcomponentisconnectedincomponenttestjacks(5),pressC.T.button,thetraceonCRToftestedcomponentshouldbedisplayedthecharacteristictraceofcomponentsarelistedinappendix.
21.TIME/DIV
Has20stepswhichrangesareform0.2sec/divto0.1us/divin1:2:5sequence.
22.X-Y
PressingtheX-YbuttonapplytheverticalsignaltotheCHIorYinputconnectorandthehorizontalsignaltotheCHⅡorXinputconnectorandthepositioningonthescreencanbeenverticallycontrolledbyCHIpositioncontrolknob.
23.HOLDOFF
Providescontrolsofholdofftimebetweensweepsignalsto
obtainstabledisplaywhentriggeringanaperiodicsignal.Thecontrolholdofftimerangesisform1to10timesoftimebase.
24.VAR
1.Providescontinuouslyvariablesweepratebyafactorof2.5.
2.LightisturnedonwhenVARisnotatcalposition.
25.X-POS(PULL*10)
1.Posotionsthedisplayhorizontally.
2.pull10:increasesthedispalyedsweepratebyafactorof10.
26.CALIBRATION(CAL)
Providesabout1KHZ0.2Vsquarewavetocalibrateprobefrequencycompensation.
27.SINGLE
Providessinglesweepfunctionafterasweepisdisplayed,furthersweepscan'tbepresenteduntilresetbuttonispressedagain,duringsweepistriggered.
28.RESET:(Referenceitem27)
1.Insinglesweepwwaitingforacomingsweepandsweepistriggered,pressedresetbuttontoobtainasinglesweep.
2.AnLEDlocatedaboveresetbuttonindicatesinglesweepisoperating.
29.EXTTRIG
Formtheconnectortheoutsidesignalcanbeinputwhihistakenforatakenforatriggersignal.
30.TRIGSELECTOR
1.I:AsampleofthesignalderivedformtheCH1inputconnectorisusedasatrigsi