力科示波器使用手册

Digital OscilloscopesWave r unner-2 Qu i c k s t a r t to Signal Vi e w i ngAnalo g Pe r s i s t e n c e ™Press A N A L O G P E R S I S T to access the power of An a l o g Pe r s i s t e n c e.The three-dimensional view shows va r i a tions in a wave f o r m as i n te n s i t y or co l o r -g r aded va ri ati o n s .Press D I S P L AY to custo m i z e the display.Press Z O O M for a close-up view of signal e the zoo m co n t r ols to magnify and inspe c t the signal,the soft k eys to change the zoom view,l o ck the zoom tra c es with multi-zoo m ,and to auto m a t i c ally scan the wave f o r m .1 .Co n n e c t your signal.When using a pro b e,Pro B u s ®a u t o m a t i c ally sets the ve r t i c al scale factor and HFP prob es a u t o m a t ic ally light-up with the tra c e co l o r .2 .Press A U T O S E T U P and view.3 .Press “ U n d o ”to reve r t back to a previous setting.Adjust the T I M E / D I V,and SMART Me mo r y a u t o m a t i c ally assure s the maximum re s o l u -tion for each time-base setting.Press a C H A N N E Lb u t t o n ,and use the co n t r ol knobs to s e l ec t and adjust that c h a n ne l ’s Vo l t s /D i v and offset settings.Press tw i c e to tog g l e the channel be t we e n On and Of f .Se l e c ts a pre- or po s t -t r igger e to v i e w the signal eve n t s p r ior to the tri g g e r po i n t.Presets the tri g g e r d e l a y to ze r o.Quick Zoo mPress a C H A N N E L b u t t on to viewthe menu.Wave p i l o t T Mfor Quick Me a s u r e m e n ts and An a l ysis with InsightPressW AVEP I L OT and M E A S U R E for a quick view of up to 26 standard p a r a m e t e r s ,to set up a custom para m e t e r ,or a pass/fail te s t .Se l e c t para m e t er measure m e n ts with statistics for multiple s w e e p s .1 .Se l e c t D A S H B O A R D for an exte n s i v e para m e t er set,or select standard Time or Voltage measure m e n t s .2 .The D A S H B O A R D v i e w is co n text sensitive so when youv i e w a signal,h i s t og r a m ,or Tra c k V i e w the measure m e n ts a r e re l e va n t.3 .C U S T O M t u r ns para m e t er statistics On or Off and allowsyou to define your own set of measure m e n t s .Pa r a m e t er Me a s u r e m e n t sMe a s u r e and An a l y z e Wave f o r m sFor math proce ssi n g ,Press button A,B,C ,or D to set up a zoo m t r a c e.1 .Press S E T U P2 .Se l e c t U S E M AT H and choose a funct i o n .Math and analysis can be pe r fo r med on any tra c e.Vi e w the result for tra c e A,B,C ,or D.Press A N A L O G P E R S I S T and select H I S T O R Y to maximize the upd a te rate and to display a signal in An a l o g Pe r s i s t e n c e and ins e q u e n c e mod e .Trigger time stamps for up to 4,000 acquisitions a r e displaye d .For further analysis of an acquisition segment,H i s t og r am the full Histo r y,then use P LAY and R EV E R S E to scan it in s e q u e n c e.Standard Measurementsa m p l Am p l i t u d ea r e a I n te g r al of wave f o r m dat ab a s e Lower of two most probable states cyc l e s cyc l e s Nu m b er of cycles of a pe r i o dic wave f o r m c m e a n Cyclic mean:The ave r age of wave f o r m dat a c r m s Cyclic root mean squard e l a y Time from trigger to tra n s i t i o n∆d l y Time be t ween 50% level of two source s d u t y Du t y cyc l e :Width as pe r ce n tage of pe r i o d f a l lFall time from 90% to 10%f 80-20%Fall time from 80% to 20%maximum The highest po i n t in a wave f o r m f r e q Fre q u e n c yminimum The lowest po i n t in a wave f o r m m e a n The ave r age of data for time-domain wave f o r m ove r +Ove r s h o ot po s i t i v e ove r -Ove r s h o ot negat i v e p k p k Pe a k -t o -p e a kpe r i o d Pe r i o d of a cyclic signalr 20-80%Rise time from 20% to 80%p h a s e Phase diffe r e n c e be t ween signal analyzed and ri s e Rise time from 10% to 90%signal used as a re f e r e n c es d e v St a n d a r d dev i a tion of data be t ween the cursors.rm s Root mean square of data be t ween the cursors w i d t hWidth of cyclic signal:All wave f o r m pulses to p Higher of two most probable state sa r e ave r aged then displaye dx a m n Ho r i z o n tal position of the smallest data va l u e x a m x The hori z o n tal position of the largest data va l u eWaverunner-2 Options:WAVA - WaveAnalyzer and EMM - Extended Math and Measurementc sde v Cyclic standard dev i a t i o n∆c2d±∆ clock to data ± (setup and hold time)cmedian Cyclic median:The ave r age of base and top∆t@lv The transition time be t ween selected levels on values over an inte g r al number of cyc l e sa single tra c e or be t ween two tra c e s f i r s t I n d i c ates value of hori z o n tal axis at left cursor m e d i a n The ave r age of base and top va l u e s l a s t Time from trigger to last (ri g h tmost) cursor po i n ts Nu mb er of po i n ts be t ween the cursors r @l e ve l Rise time be t ween selected voltage leve l s f @l e vel Fall time be t ween selected voltage leve l s dur Time be t ween triggers in segment /h i s t o r y modet @l e ve l Time from trigger (t=0) to crossing at a leve lStandard Math Tools (Signal Processing)Arithmetic Sum (add),Di f f e r e n c e (subtra c t ),Prod u c t (multiply),Ratio (divide)Ave r aging Summed ave r age of up to 4 000 swe e p s;Co n tinuous ave r age from 1:1 to 1:1024 we i g h t i n gExt r e m a Enve l o p e,f l o o r,and roo fF F T Fast Fo u r ier Tra n s f o r m to 50,000 po i n t s:FFT Ty p e s Power Spe c t r u m,P h a s e,Ma g n i t u d e.Wi n d o ws :Fl a t To p,Re c t a n g u l a r,Bl a c k man Ha r ri s,Von Ha n n,Ha m m i n gOther Fu n c t i o n s I d e n t i t y,Ne g a tion (Inve r t ),Sine x/xResample To deskew as well as resample signalsRe s c a l e Assign phys i c al units and re s c a l eE R E S En h a n c ed Resolution for up to 11 bits of ve r t i c al re s o l u t i o nWaverunner-2 Options:WAVA_WaveAnalyzerAll standard mat h,m e a s u r e m e n t,and signal processing tools plus:Extended Ave r aging Su m m e d.Ave r age of up to one million wave f o r m s.Co n tinuous ave r age from 1:1 to 1:1024 we i g h t i n gExtended FFT Fast Fo u r ier Tra n s f o r m to one million po i n t sFFT Ave r a g e,Power Ave r a g i n g,Re a l,Power De n s i t y,Real + ImaginaryH i s t og r a m s*Gra p h i c al analysis with Histog r ams and Histog r am An a l y sis Pa r a m e t e r sWAVA : 2 billion eve n t sE M M:200 eve n t sH i s t og r am Pa r a m e t e r sav g ave r age of data values in histog r a mf w h m full width (of largest peak) at half the maximum binf w x x full width (of largest peak) at xx% the maximum binh a m p l h i s t og r am amplitude be t ween two largest pe a k sh b a s e h i s t og r am base or leftmost of two largest pe a k sh i g h highest data value in histog r a mh m e d i a n median data value of histog r a mh r m s rms value of data in histog r a mhto p h i s t og r am top or ri g h tmost of two largest pe a k sl o w l o west data value in histog r a mm a x p po p u l a tion of most po p u l a ted bin in histog r a mm o d e d a ta value of most po p u l a ted bin in histog r a mpct l d a ta value in histog r am for which specified x% of po p u l a tion is smallerp k s n u m b er of peaks in histog r a mra n g e d i f f e r e n c e be t ween highest and lowest data va l u e ss i g m a s t a n d a r d dev i a tion of the data values in histog r a mto t p total po p u l a tion in histog r a mx a p k x-axis position of specified largest pe a kTrending* Plot a para m e t er versus time or versus another para m e t e rOther funct i o n s*Ab s o l u t e Va l u e,Re c i p r ocal (1/x),Sq u a r e,Sq u a r e Roo t,De r i v at i v e,I n te g r a l,Exp (base e),Exp (base 10),Log (base e), Log (base 10)DFP_Digital Filter PackageLinear-phase Fi n i t e Impulse Re s p onse (FIR) filte r s:Low Pa s s,High Pa s s,Band Pa s s,Band Sto p,Raised Co s i n e,Raised Root Co s i n e,Ga u s s i a nUp to 4 filters can be ca s c a d e d.Design a custom filter then download the filter coe f f i c i e n ts into the Wave P ro sco p e with DSOFi l t er utility.JTA_Jitter and Timing AnalysisJi t t e r T rack for a time co r re l a ted gra p h i c al view of cycle to cycle para m e t er va r i a t i o n.PMA1 – Power Measure AnalysisPower Me a s u r e An a l y sis provides para m e t r ic and gra p h i c al analysis of power dev i c e mod u l a tion and line power analys i s.* Also included with EMMWave r u n n e r - 2Tri g g e r i n gLevel indicato r sHo r i z o n tal delay (tri g g e r )position indicator I c ons indicate the ty p e and c h a r a c te r istics of the tri g g e rin use.Setup signal conditions Se l e c t pulse ty p e Se l e c t co u p l i n g Se l e c t trigger source Se l e c t trigger ty peNa meDe s c rip t i o nEd g e Se le c t po s i t i v e or negat i v e slope and hold-off by time or eve n t s .Wi n d o wSet a window around the trigger leve l .Trigger whenever the signal crosses outside the w i n d o w in either dire c t i o n .Waverunner-2 Basic TriggersAc c esses the trigger setupm e n u .Arms the tri g g e r .The sco p e triggers once when the triggerconditions are met and then displays the signal.Triggers even if a signal is notp r e s e n t.Triggers whenever the tri g g e r conditions are met.Sets the trigger leve l .Preve n ts the sco p e fro mt r i g g e r i n g .Flashes when a trigger oc c u r s .The text indicates stat u s .PressW AVE P I L OT and G RA P H for quick access to powe r ful pro b l e m solving fe a t u r e s .Qu i c k ly identify the problem with spe c i a l v i e ws :H i s t og r a m s ,F F T ,Tra c k V i e w,and Ji t t e r T ra c k .1 .Se l e c t the ty p e of view and the para m e t er or funct i o n .2 .Setup the view.3 .Se l e c t Graph and Tra c k V i e w or Ji t t e r T rack for a time- co r re l a ted view of measure m e n ts and you can visually t r ack down signal errors and anomalies.His t og r ams are fast and simple to set up.Press W AV E P I L OT a n d G RA P H ,dial in the measure para m e t e r ,s e l e c t the Histog r am Se t u p co n d i t i o n s ,then press A U T O S E T U P h i s t og r a m .Graph Pa r a m e t er Di s t r ibutions Get measure m e n ts that make sense! Press W AV E P I L OT and G RA P H ,then M E A S U R E ,for a quick,co n text -s e n s i t i v e para m e t er assess-m e n t of the chara c te r istics of Tra c k V i e ws.Graph andMe a s u r e m e n tsGraph Vi e wsRo t a r y co n t r o l s adjust the hori-zo n tal po s i t i o n and magnificat i o n of the selecte d zoom tra c e.Se l e c t a zoom tra c e fo r setup of signal proce s s -i n g .The analysis co n t r o l s a f f e c t the selected tra c e ( A ,B , C ,D ).Press tw i c e to toggle be t ween On and Of f .Quick Zooma u t o m a t i c ally displays 10X magnified tra c e s of all signals on multi-g r i d sProvides dire c t access to m a t h e m a t i c al signal p r oce s s i n g .An a l y sis Co n t r olsR S -232-CCe n t r onics co m p a t i b l e Pri n ter Po r tVGA Mo n i t or Po r tPC Ca r d Slot (optional)Su p p o r ts SRA M ,ATA Fl a s h ,a n d Ha r d Dri v e PC Ca r d s .50 Ω BNC Input for a 10 MHz Re f e r e n c e Cl o ckAC Line Input:Au t o m a t i c a l l y senses and co n f i g u r es line voltage and f r e q u e n c y.10 Base T Et h e r net Po r t (optional)Sales and Se r v i c eTh r oughout the Wo r l d Co r po r ate He a d q u a r te r s700 Chestnut Ridge Ro a d Chestnut Ri d g e ,NY 10977U S Aht t p ://w w w . l e c r oy. c o m Le C roy Sales Of f i c e s :Asia:Hong KongPhone (852) 2834 5630Fax (852) 2834 9893Austria:Markersdorf Phone (43) 2749 30050Fax (43) 2749 30051Benelux:The Netherlands Phone (31) 40 211 6998Fax (31) 40 211 6999France:Les UlisPhone (33) 1 69 18 83 20Fax (33) 1 69 07 40 42Germany:Heidelberg Phone (49) 6221 827 00Fax (49) 6221 834 655Italy:VenicePhone (39) 41 456 97 00Fax (39) 41 456 95 42Japan:OsakaPhone (81) 6 6396 0961Fax (81) 6 6396 0962Japan:TokyoPhone (81) 3 3376 9400Fax (81) 3 3376 9587Japan:TsukubaPhone (81) 298 56 0961Fax (81) 298 56 0962Korea:SeoulPhone (82) 2 3452 0400Fax (82) 2 3452 0490Spain:MadridPhone:(34) 91 640 11 34Fax:(34) 91 640 06 40Switzerland:Geneva Phone (41) 22 719 2111Fax (41) 22 719 2230U.K.:AbingdonPhone (44) 1 235 536 973Fax (44) 1 235 528796U.S.A.:Chestnut Ridge Phone (1) 845 578 6020Fax (1) 845 578 5985Co p y r i g h t © Ja n u a r y 2001Le C roy,Pro B u s ,and SMART Trigger are re g i s t e r ed tra d e m a r ks of Le C roy Co r po r at i o n .All ri g h ts re s e r ve d .Wave P ro,Wave r u n n e r ,L i t e r u n n e r ,Ji t t e r W i z a r d,Ji t t e r T ra c k ,Ji t t e r P ro,An a l o g Pe r s i s t e n c e,and Act i v eDSO are tra d e m a r ks of Le C roy Co r po r at i o n .I n f o r m a tion in this publication supersedes all earlier ve r s i o n s .Spe c i f i c ations subject to changewithout notice.Rear PanelTh r ee dimensional view a l l o ws va r i a tions in a wave f o r m as inte n s i t y or color graded va r i a t i o n s.。