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PicoScope 6 User`s Guide

1. 94 Menus 6 5 6 Masks menu Location Tools gt Masks Purpose gives control over Mask Limit Testing Clear Mask Save Mask Add Masks Add a mask to the display using the Mask Library dialog Clear Mask Remove the mask from the display Save Mask Save the displayed mask to disk as a mask file 6 5 6 1 Mask Library dialog Location Tools gt Masks Purpose allows you to create export and import masks for Mask Limit Testing Mask Library Channel W A Available Masks Library co Mask of A Loaded Channel Select the channel to which you want to apply the mask Available The Library section shows all the masks that you have saved in the masks past and not deleted The Loaded section shows all the masks currently in use Generate Create a new mask based on the last waveform captured from the selected channel Opens the Generate Mask dialog Import Load a mask that has previously been saved as a mask file Export Save a mask aS a mask file for future import Apply Use the selected mask on the selected channel but remain in the Mask Library dialog OK Use the selected mask on the selected channel and return to the scope view psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 95 6 5 6 2 Editing a mask To edit a mask in Mask Limit Testing mode right click on the scope view and select Edit Mask Add view Channels Masks SAs j Grid Layout b Jto arrange axes
2. PicoScope 6 PC Oscilloscope Software User s Guide psw en r3 Copyright 2007 2014 Pico Technology Ltd All rights reserved Technology PicoScope 6 User s Guide I Table of Contents ENNECO a a A E A N 1 A PICOSCODE GOV CI VIEW aena eain dob tuasamtouiddanmtve sec encuantouts 2 S IMUOGUCLION aicareaieuhahciiecatectew se iawacounsedubetoidinsalasedsbasciaancabscndutateiodel 3 Wikegal Statemene seecsasiseactecasccchaviccteanssencesabavaccoeatyoectancosiecensy caenssaseenanasyasicaneeearesiatveaecaeroeutensycocaasgmeeeasesuetcense 3 J Upgrades sbasaseipteevatiesd sca dnc cteanatetae ations einen ees Saatchi aaa de aa ste alana 3 3 Trademarks auro ETA ade E AT AA iia tects 4 A Contact informations esserne a ae T N E A A a 4 5 How to use this manual esssesssesssecsssecssecsscosscosecosecosecoseccsecosecosecosecssecosecssecssecssecssecssecssecssecssecsseosseeseeeseeosee 4 6 System FeGuirerinetnts woii inana an aeea NE AATTEENA OEEO C EDMEE EEEIEE SONES EAEE EEES 5 A USING Ficoscope Tor Lae MrS INE omn 6 PICOS CODE dnd OSCIIIOSCOPE DMEF rarior aE E E EE 7 1 OSE GSCOpe basics i sicaiesccscsssssesd sess cts cacsrtes rea aa e a ae a acne vi cle eters eekaecees 7 PPC Oscilloscope basicserie i E teaiaaeot ena ae cancetned este meter es eec ensues 8 BPICOSCOPE Basics annene A EE I cuted bansbedbaeds EE 8 1 Capture HVA Te E E E T E caean oh cua sa edsnne nad ualgeed caben ab Uva cba sheet Cuad Cavenpuep
3. When should I use this feature Lowpass Filtering Activate Filtering Analog Options DC Offset OV Es _ 20 MHz Bandwidth Limit Axis Scaling Scale 100 s Offset 0 00 EHe Zero Offset Zero Probe list Indicates the probe currently in use and allows you to select a different one Use it to tell PicoScope what type of probe is connected to a channel By default the probe is assumed to be x1 which means that a one volt signal at the input to the probe will appear as one volt on the display Expand probe list Click this to select from a list of probes Open Custom Probes dialog The Custom Probes dialog allows you to edit your library of custom probes Resolution enhancement Allows you to increase the effective resolution of your scope device using Resolution enhancement The number in this box is a target value that the software will attempt to use whenever possible Axis Scaling These are the axis scaling controls that allow you to set the scale and offset for each vertical axis individually Analog Options Options that can be applied to the oscilloscope input hardware if the oscilloscope hardware supports them DC Offset an offset voltage added to the analog input before digitization For availability see the Device feature table Bandwidth Limit a fixed frequency single pole analog filter This can be useful for rejecting noise and harmonics that would otherwise cause alias
4. 7 3 1 3 Lowpass filtering The lowpass filtering feature can reject high frequencies from any selected input channel The filtering control is found in the Advanced Channel Options dialog which is opened by clicking the Channel Options button Aa for the relevant channel on the Channels toolbar The control determines the cut off frequency of the filter which must be below half the sampling rate shown in the Properties sheet Lowpass Filtering 1 kHz 1000 FS Me Activate Filtering For availability see the Device feature table Lowpass filtering is useful for rejecting noise The split screenshot below shows the effect of applying a 1 kHz lowpass filter on a noisy signal The underlying shape of the Signal is preserved but the high frequency noise is eliminated hy PicoScope6 m File Edit Views Measurements Took ws oe au F ssi E tof gt Sli G Ne Ag 100 mv Dc off ia m D i A e 20 0 40 0 60 0 r j _ 80 0 100 04 Pa 250 200 150 100 5 0 0 0 5 0 10 0 15 0 20 0 x10 TES QE trigger Auto r A Left before lowpass filtering Right after 1 kHz lowpass filtering Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 122 Toolbars and buttons Filter details The lowpass filtering algorithm is chosen according to the ratio of the selected cut off frequency f to the sampling ra
5. Signum function The sign operator returns the sign of its input The result is 1 when the input is positive 1 when the input is negative and O when the input is 0 Advance Delay Add t after a channel name to advance it by t seconds For example A O 001 is equal to Channel A advanced by 1 millisecond and A 0 001 is equal to Channel A delayed by 1 millisecond Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 80 Menus 6 5 2 1 3 Math Channel Wizard Name dialog Location Math Channel Wizard Purpose allows you to enter or edit the name and color of a math channel tg Math Channel Wizard Edit the channel name and channel color Name A B A PicoScope initially sets the name to the text of the equation but you can edit it to anything you like The name will appear in the channel list in the Math Channels dialog You can set the color of the trace to one of the standard colors in the drop down list or click Custom to choose any possible color allowed by Windows psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 81 6 5 2 1 4 Math Channel Wizard Units and Range dialog Location Math Channel Wizard Purpose allows you to specify the measurement units and the range of values to display for a math channel Select the range and units for your Maths Channel Units Long Name Unknown Short Name h Range Override
6. 6 5 1 1 4 Scaling Method dialog Location Probe Output Units dialog gt Next Purpose allows you to define the characteristic that PicoScope will use to convert the custom probe s voltage output to a measurement on the display Hig Custom Probe Wizard Scaling Method A Custom Probe can apply scaling to the data before itis displayed f Use alinear equation to scale the data fy mx c y 100 x 50 volts Gradient m Offset c C Use a look up table dinearly interpolates between points on the table C Dont apply any scaling to the data How to use the dialog gt If you do not require any scaling or offset click the Don t apply any scaling button If the probe requires linear scaling click the Use a linear equation button and enter the gradient or scale factor m and the offset c in the equation y mx c where y is the displayed value and x is the probe s voltage output If you wish to apply a nonlinear function to the probe s output choose Use a look up table then click the Create a Lookup Table button to create a new lookup table This will take you to the Lookup table Scaling dialog Click Next to continue to the Range Management dialog Click Back to return to the Probe Output Units dialog psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 63 6 5 1 1 4 1 Lookup table Scaling dialog Location Scaling Method dialog gt Create
7. Add Measurement PicoScope automatically scales and offsets the channels to make them fit on the view without overlapping This is the quickest way to tidy up the scope view y PicoScope 6 fo S y PicoScope6 keta File Edit Views Measurements Tools Help File Edit Views Measurements Tools Help A du ili A f 500 saiv o x4 Ellos ds of a ADREF AT alu ali F Gh 500 ps aiv x 1 Ellos AAL 4of4 DINTI IIA x oc Da Auto ii Dc Mag Ay Auto x oc By Auto oc i Ca Auto x 0c C Da Auto oc Kag a a Ag Auto pc Ba Auto Dc Ca Auto i psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 165 Axis scaling and offset Use these tools if Auto arrange axes see above does not give you the results you want It allows you to position channels individually on the view unlike the global zooming and scrolling tools which are applied to all of the channels at the same time Click the scaling button i at the bottom of the axis you wish to modify and the axis scaling controls will appear To adjust the offset without using the axis scaling controls click on the vertical axis and drag it up or down How is this different from scaling my data with a Custom Probe New Probe You can creat
8. 450 550 A 350A LOKA z Scaled Range ilnput Range Back Next gt Cancel If you wish you can click Auto Generate Ranges and the program will create a number of ranges for the selected device This will create the same list of ranges that you would have obtained by selecting Let the software manage my ranges for me automatically in the previous dialog When you select a range a diagram below the list will show its relationship to the scope device s input range this is explained further under Edit range dialog You can then edit the ranges by clicking Edit or you can also add a new range by clicking New Range Both of these buttons take you to the Edit Range dialog Click Next to continue to the Filter Method dialog Click Back to return to the Range Management dialog How to use a new custom range After you have created ad Fie Wiews Measurements Tc a custom range it will B appear in the drop Channels lal 1 msjdiv 1955 down list of ranges in toolbar the channels toolbar like this Hew custom range Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 66 Menus 6 5 1 1 6 1 Edit Range dialog Location Manual Ranges Setup dialog gt Edit or New Range Purpose editing a manual range for a custom probe Edit Range Standard Options Advanced f Recommended Automatically select the hardware input range C Use this hardwa
9. A spectrum view is one view of the data from a scope device A spectrum is a diagram of signal level on a vertical axis plotted against frequency on the horizontal axis PicoScope opens with a scope view but you can add a spectrum view by using the views menu Similar to the screen of a conventional spectrum analyzer a spectrum view shows you one or more spectra with a common frequency axis Each view can have as many spectra as the scope device has channels Click on one of the labels below to learn more about a feature Ruler Signal Graticule legend miler Spectrum z E 10 0 dBu E 16 0dBu sj Channel BL O 7 0 MHz a ns e FA 2T 32 0 42 5 Signal axis S30 for Channel Ano Frequency Hc ruler 84 5 95 04 00 10 0 20 30 0 40 0 50 0 60 0 GE MHz hMeasurements table Frequency at Peak A At Peak 999 5 kHz Arplitude at Peak A At Peak 1 117 dBu Frequency axis Unlike in the scope view in the spectrum view the data is not clipped at the limits of the range displayed on the vertical axis so you can apply axis scaling or offset to see more data Vertical axis labels are not provided for data outside what is considered to be the useful range but rulers will still work outside this range Spectrum views are available regardless of which mode Scope Mode or Spectrum Mode is active For more information see How to set up the spectrum view and Spectrum Options dialog Copyright 200
10. Ay in F f 500 us div v x1 8 017 k E K 100 of 100 2 ee Agi iv oci 2a off B A Trigger event 4 812 5 312 5 812 6 312 6 812 Ello Hlm S Pre trigger delay Trigger Post trigger delay reference point The pre trigger delay positions the scope view in relation to the trigger reference point so that you can choose how much of the waveform should be before the reference point and how much after it The post trigger delay is like the delayed trigger of a conventional oscilloscope PicoScope waits for this time after the trigger event before drawing the trigger reference point Scope devices have a limit to the number of sampling intervals that can elapse between the trigger event and the end of the capture so the software may adjust the pre trigger delay to keep within this limit Tip If you have set up a post trigger delay you can click the post trigger delay button while the scope is running whenever you want to switch between viewing the trigger event and the trigger reference point psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 187 9 6 Serial protocols The serial decoding feature of PicoScope understands the following serial protocols Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 188 Reference 9 6 1 RS232 UART protocol You can decode RS232 UART data using the serial dec
11. d lt names gt Destination Default is input filename with new extension i lt terac gt Destination format csv txt png bmp gif agif animated GIF psdata pssettings mat MATLAB This is a Mandatory argument Ja Quiet mode Do not ask before overwriting files The default is to prompt o lt n gt lt m gt all Waveform number n waveform range n to m or all waveforms The default is the current waveform v lt viewportname gt View to convert Default is current view Example PicoScope c C Temp source psdata f png b 5 9 v Scope2 Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 200 Reference To print a view PicoScope P p Prints a view in the psdata file Cannot be used with c onvert Syntax PicoScope p rint lt names gt b lt n gt lt m gt all v lt viewportname gt lt names gt Specifies a list of one or more directories or psdata files Wildcards may be used to specify multiple files If a directory is specified all psdata files within that directory will be specified This is a mandatory argument Jo lt n eam 1 al1 Waveform number n waveform range n to m or all buffers Default is current waveform v lt viewportname gt View to convert Default is current view Example PicoScope p C Temp source psdata b 5 9 v Scope2 To import notes PicoScope N n Copies text from a specified file to the Notes area Syntax Pico
12. the Library section of the Reference Waveforms list If the waveform you want to edit is in the Loaded section first copy it to the Library section by clicking Duplicate then select it and click Edit Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 84 Menus Delete Permanently deletes the selected reference waveform Only reference waveforms in the Library section can be deleted Duplicate Creates a copy of the selected input channel or reference waveform The copy is placed in the Library section from where you can edit it by clicking Edit A quicker way to do the same thing is to right click on the view select Reference Waveforms and then click the channel that you wish to copy Import Opens a psreference reference waveform file and places the waveforms it contains in the Library section Export Saves all reference waveforms from the Library section to a new psreference or MATLAB 4 mat file 6 5 3 1 Edit Reference Waveform dialog Location Purpose Reference Waveforms dialog gt Edit allows you to edit the name and color of a reference waveform Reference Waveform Name Color Name Color noise E Custom Custom l Cancel PicoScope initially names the waveform after the input channel used as its source but you can edit it to anything you like Here we have named it sine The name will appear in the waveform list in the Reference Waveforms dialog
13. Advanced Options toolbar gt Channel Labels button Purpose allows you to supply and view information on the waveforms Channel Labels A Injector current Bg looks like stuck injector B Injector voltage l normal C Ignition coil primary volta ask Phil Unknown D Ignition coil secondary vefs lf HT too low Bad Channel Labels can be displayed at the bottom of the PicoScope window Label Select a standard label from the drop down list or type any text in the box Description Type any text in the box to describe the waveform Status Select Good Bad or Unknown This helps other engineers to identify whether the waveform is from a working engine ora faulty one Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 50 Menus 6 2 3 Details dialog PicoScope Automotive only Location File gt Save As Edit gt Details Purpose allows you to record channel labels and vehicle and customer details before saving a file Recent Vehicles Nissan Almera 2 2004 Make Nissan Model Almera Generation 7 Year 2004 Transmission panual Test Conditions Camshaft sensor og after replacement Battery voltage og headlights on Engine Code N16 Primary Fuel Petrol Secondary Fuel Cylinders 4 Configuratior inline Capacity L 7 5 Capacity cu in 94 ECU Make Hitachi ECU Model Crankease pressure og known good sensor Throttle Position Sense E note dea
14. Edit Opens a psmaths math channel file and places the math channels it contains in the Library section Saves all math channels from the Library section to a new psmaths file Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 74 Menus 6 5 2 1 Location Purpose Math Channel Wizard Channel Setup toolbar gt Math Channels button creating editing and controlling math channels which are virtual channels generated by mathematical functions of input channels Create a New Maths Channel This wizard will guide you through the process of creating a new Maths Channel What is a Maths Channel I Don t show me this introduction page again coi ie ce 4g Math Channel Wizard Enter the equation for this Maths Channel amal ce ll c Lal ca al ih at gt Advanced gt gt 4g Math Channel Wizard Edit the channel name and channel color Name A B A Color E Black Custom y Math Channel Wizard Select the range and units for your Maths Channel Units Long Name Unknown Short Name Range Override automatic range selection Min 0 1 Max 11 Finished creation process is complete Press Finish to continue Formula A B A Color Black 1 Introduction 2 Equation 3 Channel name 4 Units and range 5 Fi
15. PicoScope displays a main scope view optimises its settings for use as a PC Oscilloscope and allows you to directly set the capture time You can still display one or more secondary spectrum views In spectrum mode PicoScope displays a main spectrum view optimises its settings for spectrum analysis and allows you to directly set the frequency range in a similar way to a dedicated spectrum analyzer You can still display one or more secondary scope views In persistence mode PicoScope displays a single modified scope view in which old waveforms remain on the screen in faded colors while new waveforms are drawn in brighter colors See also How to find a glitch using persistence mode and the Persistence Options dialog When you save waveforms and settings PicoScope only saves data for the mode that is currently in use If you wish to save settings for both capture modes then you need to switch to the other mode and save your settings again See also How do capture modes work with views Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 10 PicoScope and oscilloscope primer 5 3 2 How do capture modes work with views The capture mode tells PicoScope whether you are mainly interested in viewing waveforms scope mode or frequency plots spectrum mode When you select a capture mode PicoScope sets up the hardware appropriately and then shows you a view that matches the capture mode a scope v
16. Show languages with missing Fonts Measurement System Specified what measurement system to use System Default kd Language Select from the drop down box the language you wish to use for the PicoScope 6 user interface PicoScope will ask you to restart the program before switching to the new language Measurement System Select metric or U S units Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 104 Menus 6 5 8 6 Printing page Location Tools gt Preferences gt Printing Purpose lets you enter the details that will appear at the bottom of printed output Printing Printi Default Print Settings Set the default contact information for printing Company Name Pico Technology s lt i s Company Website wwwpicotechcom Telephone Number raajag0a96305 S C S Default Print When you print a view from the File menu these details will be Settings added to the bottom of the page psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 105 6 5 8 7 Colors page Location Tools gt Preferences gt Colors Purpose lets you set the colors for various parts of the user interface Colors Custom Colors Channels Gorn E Channel B Digital Channels Masks Misc Persistence F Item E Default Custom Line Thickness Line Thickness Grid Lines Rulers ipt w
17. To insert a Greek p the micro symbol meaning one millionth or x 10 8 type the letter u Tracking rulers When two rulers have been positioned on one channel the Lock button appears next to that ruler in the ruler legend Clicking this button causes the two rulers to track each other dragging one causes the other one to follow it maintaining a fixed separation The button changes to when the rulers are locked TIP To set up a pair of tracking rulers with a known distance between them first click the Lock button then edit the two values in the ruler legend so that the rulers are the desired distance apart Phase rotation rulers When phase rulers called rotation rulers in PicoScope Automotive are in use the ruler legend displays additional information See also frequency legend Frequency legend O Saat Hz 00S RPM J The frequency legend appears when you have placed two time rulers on a scope view It shows 1 A in hertz the SI unit of frequency equal to cycles per second where A is the time difference between the two rulers You can use this to estimate the frequency of a periodic waveform but you will get more accurate results by creating a frequency measurement using the Add Measurements button on the Measurements toolbar psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 29 For frequencies up to 1 666 kHz the frequency legend can also show
18. psw en r37 12 PicoScope and oscilloscope primer 3 5 Scope view A scope view shows the data captured from the scope as a graph of signal amplitude against time See Oscilloscope basics for more on these concepts PicoScope opens with a single view but you can add more views by using the views menu Similar to the screen of a conventional oscilloscope a scope view shows you one or more waveforms with a common horizontal time axis with signal level shown on one or more vertical axes Each view can have as many waveforms as the scope device has channels Click on one of the labels below to learn more about a feature Graticule Trigger Signal Ruler diamond ruler legend Scope scope e agpo S T e ma Overvoltage indicator q vertical axis 04 for channel B Vertical axis for channel Time ruler Channel B Scaling but o A ms nl el O aed kHe E Measurements table E Peak To Peak A Between rulers 1 602 W Duty Cycle A Whole trace 0 03 4 Time Frequency axis legend Scope views are available regardless of which mode scope mode or spectrum mode is active psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 13 5 6 Overvoltage indicator If an overvoltage a signal outside the measuring range is detected the red warning icon M will appear in the upper corner of the PicoScope screen next to the relevant channel s ve
19. time the generator is triggered If the trigger Type is Gate High or Gate Low the generator will stop when the gate signal goes inactive even if the requested number of cycles has not been generated Threshold Available only when Trigger Source is Ext Input Sets the voltage level used to distinguish between the high and low states of the trigger signal Manual Trigger Available only when Trigger Source is Manual Triggers the signal generator to produce the specified number of cycles or sweeps if the signal generator is in sweep mode psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 141 7 9 2 Signal Generator dialog USB DrDAQ Location Signal Generator button on the USB DrDAQ Channels toolbar Purpose controls the USB DrDAQ s built in signal generator Signal Generator Signal On i Arbitrary Frequency 1 kHz Amplitude Peak 4 y Offset ov Signal generator dialog for the USB DrDAQ Basic controls Signal On Tick this box to enable the signal generator Sine Signal Type Select the shape of the waveform to be generated Arbitrary Arbitrary Opens the Arbitrary Waveform window allowing you to define your own waveform shape 1 kHz Frequency Type in this box or use the spin buttons to select the frequency of the output waveform i Amplitude The amplitude of the waveform measured from peak to peak For example if Amp
20. 1 USB DrDAQ RGB LED control Location USB DrDAQ Channels toolbar gt RGB LED button allows you to set the color of the on board LED to any one of 16 7 million colors te Purpose Enable LED Control O Brightness 100 K Red M A OE Green _ 52 a Bue ass Enable LED Control Box checked you can set the on board RGB LED to any color Box clear the LED has its normal function of flashing to indicate data capture on the input channels Other controls Experiment with these to see what they do psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 129 7 5 2 USB DrDAQ Digital Outputs control SLL Location USB DrDAQ Channels toolbar gt Digital Outputs button Purpose allows you to set the characteristics of the four digital outputs on the screw terminal block Each output has its own set of controls Digital Out 1 PWM Period ims Duty Cyde 50 a Digital Out 2 PwM Period ims G Duty Cyde 50 a Digital Out 3 Out High Low m om Out High Low PWM Out Control Set to Out you can set the output to either a fixed logic low near O V or a fixed logic high near 3 3 V Set to PWM the output is a two level waveform alternating between 0 V and 3 3 V with variable Duty Cycle and Period The signal can be filtered to produce a DC level proportional to the duty cycle Period the time between successive pulse
21. 6 is a comprehensive software application for Pico Technology oscilloscopes Used with a PicoScope hardware device it creates an oscilloscope and spectrum analyzer on your PC PicoScope 6 supports the devices listed in the Device feature table It runs on any computer with Windows XP SP3 through to Windows 8 See System requirements for further recommendations How to use PicoScope 6 Getting started see using PicoScope for the first time and PicoScope s Features For further information see descriptions of Menus and Toolbars and the Reference section For step by step tutorials see the How to section Legal statement Grant of license The material contained in this release is licensed not sold Pico Technology Limited Pico grants a license to the person who installs this software Subject to the conditions listed below Access The licensee agrees to allow access to this software only to persons who have been informed of and agree to abide by these conditions Usage The software in this release is for use only with Pico products or with data collected using Pico products Copyright Pico claims the copyright of and retains the rights to all material software documents etc contained in this release Liability Pico and its agents shall not be liable for any loss or damage howsoever caused related to the use of Pico Technology equipment or software unless excluded by statute Fitness for purp
22. A AEE AE A E E S E EA A EE S 54 2 Advanced measurement settings PEE EE A E E T A A E A EENEN ENA ETE 55 5 Tools men Soenens nnee a e e a aaee ae nee dame baste esee aee aeaee a E EN ESS 57 1 Custom Probes dialog P ETAR EAEE E EEAO EEEE EEE EEEE OAE EEEE 58 2 Math Channels dialog E E E E E E a A A E E E O A AA E 72 3 Reference Waveforms dialog OTE TEETE ST TEE ATE E E EE S TEE EE T E E 83 4 Serial Decoding dialog PE EA O EIA PENE AEEA AE A EET ER EE AN EAA EEE S EE A EEE 85 5 Alarms dialog SE E aPC AT TET EE EE EAEE EAE E AES TE TTEA N AE Stn AE E EE RASE Ny 92 Masks meny aise aac eae e a ee Tai ea aa ari ae causa eee ada E rapa adda db EEAS Aad ea Eea raS Daaa OKEE AAEE 94 7 Macro Recorder erruo n a ARa S R a E A RO EAN 97 8 Preferences dialog etter eet tecen tesa tecenecanecaanecesneccaneccassesassecasecaasecaaseceaseceascsanenenenaeenagett 98 6Help rer sea beens tea ete Reece cate Saree eect nase eaae occa deus E ETE AE ENRE e 109 7 Automotive menu PicoScope Automotive only ccssccssssesesscssssessseesssesseessseeseseessseesessessasessasessseesnes 110 8 Connect Device dialog EAA EES OEE EEE cane Eee EEE ae AAE E E E OAE EE A EEE E A E EEE EE AA A 111 Q Converting files in Windows Explorer PETE E A ET E E A E ET E A EST A T E E EEE 112 TL OOIDARS ANG DUON S nennen a a a OR 114 1 Advanced Options Gay AAU eee a e r a a a a a e a a ER 115 2ConhectDet ct rean a eee a E E E A A E e e a wid eee a EE EA 115 3 Channels toolb k s
23. Decimal Signed Draw Groups F By Values Draw groups with By Valu al aaa transitions only where the value By Time changes By Level Aas 8 a By Time Draw groups with transitions Spaced equally in time once per sampling period You will usually need to zoom in to see the individual transitions HG1 fi By Level Draw groups as analog levels derived from the digital data A G1 psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 17 5 8 XY view An XY view in its simplest form shows a graph of one channel plotted against another XY mode is useful for showing relationships between periodic signals using Lissajous figures and for plotting I V current voltage characteristics of electronic components Graticule Views menu Scope E i Odd view Channel 4 Rename View 0 6 Close View Yo asis 0 4 Channels Channel Aj 02 Time 0 0 Grid Layout b A 0 2 Reset view Sizes 0 4 Move view To b 0 6 Reset View Layout 08 1 0g l 10 08 06 04 02 OO OF 04 06 08 410 Scaling button F x axis Channel B In the example above two different periodic signals have been fed into the two input channels The smooth curvature of the trace tells us that the inputs are roughly or exactly sine waves The three loops in the trace show that Channel B has about three times the frequency of Channel A We can tell that the ratio is not exactly three b
24. E EN O OEA 32 24 Relerence Wave lorrie aa TA T ahaa eas aa mena eas sene 33 De Serial Cecocanige annae AE E N A 34 Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 II Table of Contents 26 Mask limit testing PRETE E APE EEIE EE E TEES O E E E A E O E EE EEN EEEE T E AEE A 35 LEAI rms e e E A E E E E E E a e E satennes scutes aeanebae 36 28 Buffer OV VO j a a aa ernie as ccs ae a E A EE SETANE 37 GMIONUS sorsa A E 38 TERlemen n aeee a e E a E A AE E A T E AE E ANA ARTOS 39 1 Save As dialog TENE A EEES S E OEE OSES ESAE EE EEE E AEE E ETE S ESTESE ETS 40 2 Startup Settings Henie NE cadena ataleGatetad 46 3 Waveform Library Browser eeeeeeeeeeeeeeeeeeeeeeeteeeeeeeeeeeetteeeeeeereetteseseseeteeeteesnnseteeeeteeeeneeteereeesrnseeeeeeseeenneeeeeeeent 47 2 BGIETHICTUL a hws ene See es ewes ewe E r a sae een Sos ewes het eters ices 48 ah ic eC Ce re ar a ere re re errr er er er ere 48 2 Channel Labels PicoScope Automotive only ES E PEES IE E S EA EAA ESAT 49 3 Details dialog PicoScope Automotive only AERES E ENE EA AEE S AEE 50 3 Views menut Sek eecacae be deeauce E OE EOE O EERON AE EE a A E AEE EEE A EE REE DEEA E SEEE te 51 1 Custom grid layout dialog E A EA S T E E R A E A E E A A T E E E aaees 52 4 Measurements menu sssssssssssosssosssosssocesocssosesosssscesssssssesssssssesssssssesssssssesssssssesssesssessssossessssssosssssssseo 53 1 Add Edit Measurement dialog EE E
25. In the scope view above the two white squares on the time axis are the time ruler handles When you drag these to the right from the bottom left corner vertical dashed lines called time rulers appear The rulers work in the same way ona spectrum view but the ruler legend shows their horizontal positions in units of frequency rather than time Ruler tool tip If you hold the mouse pointer over one of the rulers as we did in the example above PicoScope displays a tool tip with the ruler number and the time value of the ruler Ruler legend The table at the top of the view is the ruler legend In this example the table shows that time ruler 1 is at 148 0 microseconds ruler 2 is at 349 0 microseconds and the difference between them is 201 0 microseconds Clicking the Close button on the ruler legend also deletes all the rulers Frequency legend The frequency legend in the bottom right hand corner of a scope view shows 1 A where A is the difference between the two time rulers The accuracy of this calculation depends on the accuracy with which you have positioned the rulers For greater accuracy with periodic signals use the frequency measurement function built in to PicoScope psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 25 5 17 Phase rotation rulers Location Scope view The phase rulers called rotation rulers in PicoScope Automotive help to measure the timing of a cyclic waveform
26. Reset View Layout A mask is made up of one or more shapes called polygons Click on the polygon you wish to edit PicoScope will then draw edit handles on the selected mask polygon and display the mask edit box If you drag any of the handles to edit the polygon the Statistical results will be updated immediately The mask edit box looks like this 5 069 ps 1 3 069 ps 4875 mi 4 789 ps 487 5 m 4 749 pe 473 6 mi 1 029 ps 473 6 mi P49 ns 338 7 mie 189 ns 23 48 m 131 ns 222 1 my H 691 ns S07 mw Minimized Normal view view If the edit box is not immediately visible it may have been minimized in which case click the restore button If you edit the coordinates of a vertex the statistical results will be updated immediately You can also export the mask to a mask file with H l the export button Use the and buttons to add or remove vertices The minimize button has its usual function To leave mask editing mode close the mask edit box with the close X button To add or remove an entire polygon right click the scope view and select either the Add Mask Polygon or the Remove Mask Polygon command A Exit Mask Edit Save Mask Remove Mask Polygon Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 96 Menus 6 5 6 3 Generate Mask Dialog Location Purpose Name X Offset Y Offset Mask Library dialog gt Generate allows
27. Technology Ltd All rights reserved psw en r37 174 How to 8 9 How to save on trigger Save on trigger is just one of a number of functions that are possible with the Alarms feature 1 Set up PicoScope to display your waveform and enable triggering Ay PicoScope6 File Edit Views Measurements Tools Help CERERE Aj u F Alsa la AE llos sa ado Ha H fhn Custom Probes Maths Channels Ed Reference Waveforms aia Serial Decoding FL Masks H S Preferences 3 You should now be in the Alarms dialog psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 175 Event Buffers Full vl Event Buffers Full lt n Buffers Full Mask s Fail l 5 Select the first item in the Actions list click Edit and change Action to Save Current Buffer Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 176 How to 6 Click the b button to the right of the File box and enter the name and location of the file to save 7 Ensure that both the Save Current Buffer check box and the Enable Alarm check box are set psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 177 Save Current Buffer 203 7 Click OK PicoScope will now save a
28. a Look up Table or Edit the Lookup Table Purpose creates a look up table to calibrate a custom probe Lookup table Scaling Input units Scaled units millivolts v amperes Start typing here Add Row Insert Row Above Insert Row Below z H ky pen by Delete Row i i Export a Ti a Editing the Look up Table First select suitable values in the Input units and Scaled units drop down boxes For example if your probe is a current clamp that outputs one millivolt per ampere over the range 600 to 600 amperes select Input units of millivolts and Output units of amperes Next enter some data in the scaling table Click the first empty cell at the top of the table and type 600 then hit the Tab key and type 600 When you are ready to enter the next pair of values press the Tab key again to start a new row You can also right click on the table to obtain a more detailed menu of options as shown in the picture In the example above we have entered a slightly nonlinear response if the response had been linear then it would have been easier to use the linear option in the Scaling Method Dialog Import Export Using the Import and Export buttons you can fill the look up table from data in a comma separated or tab delimited text file and save the look up table to new file Finishing Clicking OK or Cancel will return you to the Scaling Method dialog Copyright 2007 2014 Pic
29. are Beep Play Sound Stop Capture Restart Capture Run Executable Save Current Buffer Save All Buffers See Alarms dialog for more details psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 37 5 28 Buffer Overview The PicoScope waveform buffer can hold up to 10 000 waveforms subject to the amount of available memory in the oscilloscope The Buffer Overview helps you to scroll through the buffer quickly to find the waveform you want To begin click the Buffer Overview button in the Buffer Navigation toolbar This opens the Buffer Overview window Click on any one of the visible waveforms to bring it to the front of the overview for closer inspection or use the controls Buffers to show M Start H Backward A Zoom in ES Zoom out Forward A End If any of the channels has a mask applied then you can select the channel from this list The Buffer Overview will then show only the waveforms that failed the mask test on that channel Scroll to waveform number 1 Scroll to the next waveform on the left Change the scale of the waveforms in the Buffer Overview view There are three zoom levels Large default view One waveform fills the height of the window Medium a medium sized waveform above a row of small waveforms Small a grid of small waveforms Click on the top or bottom row of images to scroll
30. character to the left of the cursor Add Subtract or negate Multiply Divide Input Channels The selection available depends on the number of enabled channels on the scope device Other Operands Shows a drop down list of available inputs to equations including reference waveforms and Time Brackets Expressions within brackets will be evaluated before the expressions to either side psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 77 Advanced view Clicking the Advanced button reveals more function buttons Initially these are the Main group of buttons as shown below Enter the equation for this Maths Channel ava ILE vaeerere fa jie Lc Le f Pies oo _ freq du auty lo 6 ee duty tog Equation Editor Advanced view showing Main buttons Advanced buttons numeric keypad Button Equation Description D 3 0 9 0 to 9 The decimal digits pn Decimal point E Exponent aEb means a x 102 Advanced buttons Main group Button Equation Description sqrt sqrt Square root x x Power Raise x to the power of y In Ind Natural logarithm abs abs Absolute value freq freq Frequency Calculated in hertz Normalise PicoScope calculates the maximum and minimum values of the argument over the capture ROTAL period and then scales and offsets the argument so that it exactly fits the range 0 1
31. controls interact io Ez Rapid Captures In Rapid trigger mode this is the number of waveforms to capture in a sequence They will be captured with the minimum possible dead time between them This toolbar normally resides at the bottom of the program window but can be moved to the top using the Move Trigger toolbar to top control in Tools gt Preferences gt Options psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 151 7 11 1 Advanced Triggering dialog L ion 7 OLEG Triggering toolbar gt Advanced Triggering button JE Purpose allows you to set up more complex trigger types than simple edge triggering p J Threshod ov Advanced Edge Direction Rising La Window LF Pulse Width UR Interval La Window Pulse Width hla Level Dropout Uke Window Dropout AEP Digital Te Logic Help cose Simple Edge Advanced trigger types list This control lists all the available advanced trigger types Click Advanced Edge on the condition you require and a diagram Se in and description will appear on the right of the dialog If ETS triggering is enabled in the triggering toolbar then selecting any trigger type except Simple Edge switches off ETS mode Advanced triggering options The options ses i c available depend on the trigger type selected mei Rising See Advanced trigger types Instructions and diagrams a
32. depends on the Show Full Key List option see below To edit or add a keyboard shortcut e Scroll the list of PicoScope commands until the required operation is visible Select the required operation Select the Press shortcut keys box Press the required key combination on the keyboard Click Assign Show Full Key List Check this box to show all available operations By default only the most common operations are listed plus any other operations that have a keyboard shortcut assigned to them Keyboard Maps A set of keyboard shortcuts is called a map You can define multiple maps for different applications Default This map cannot be edited Use it to return to the factory defined basic shortcuts Advanced This is another factory defined map that cannot be edited It contains a more comprehensive set of shortcuts User This is the map that you most recently created or imported It is preserved between PicoScope sessions Import Load a keyboard map from a pskeys file Export Save the current keyboard map to a pskeys file psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 103 6 5 8 5 Regional amp Language page Location Tools gt Preferences gt Regional amp Language Purpose lets you select the language and other location dependent settings for PicoScope s user interface Regional amp Language Language Mode Selection Lanquage English
33. disabling 107 Spectrum options bins 132 dialog 132 display mode 132 scale 132 Spectrum view 10 19 how to setup 166 SPI protocol 189 Spreadsheet exporting to 40 Spurious edges finding 152 Standard deviation 21 205 Start Stop toolbar 107 148 Startup Settings menu 46 State trigger 155 Statistics 21 filtering 55 Support 3 Sweep mode 138 198 Symbols red warning 12 yellow warning 32 System requirements 5 7 Telephone number 4 Text files exporting 40 43 Threshold for measurements 55 Thresholds digital input 123 Time difference how to measure Time gate 30 Time rulers 12 19 24 Timebase controls 130 Tool tip 205 Toolbars 114 Tools menu 57 Trace 7 Tracking rulers 28 Trade marks 3 4 Trigger 149 185 205 advanced 149 151 digital 155 dropout 152 dual edge 151 edge 152 glitches 152 interval 151 152 logic 152 marker 18 missing events mode control pulse width reference point runt pulse 152 timing 185 toolbar 149 window 152 Triggering toolbar U U S measurements UART protocol Undo zoom 158 Updates 109 Upgrades 3 Usage 3 Usage statistics USB DrDAQ 127 USB power 203 Used check box User s Guide 109 V Valid edges finding Version number hardware 162 152 149 151 152 185 107 103 188 108 156 152 109 psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 215 Version number
34. easily identified optional 600 A current damp imV A How to use the dialog Click Back to return to the Filter Method dialog The probe name will appear in the probe list The description is not used in the present version of the software Fill in the text fields and click Next to continue to the Custom Probe Finished dialog psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 71 6 5 1 1 9 Custom Probe Finished dialog Location Custom Probe Identification dialog gt Next Purpose Signals the end of the custom probe setup procedure iy Custom Probe Wizard Finished How to use the dialog Click Back to return to the Custom Probe Identification dialog Click Finish to accept your custom probe settings and return to the Custom Probes dialog Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 72 Menus 6 5 2 Math Channels dialog Location Tools gt Math Channels Purpose creating editing and controlling math channels which are virtual channels generated by mathematical functions of input channels Math Channel Select a Maths Channel Invert B A 6 A B A B ASB Explain what Built in Library and Loaded Maths Channels are Math Channel list Math Channel list The main area of the Math Channels dialog is the Math Channel list which shows all the built in library and loaded math channels To choose wheth
35. enabled hy PicoScope 6 File Edit Views Measurements Tools Help Ma SN io T u fa T ms m wi Pre trigger Post trigger Post trigger delay delay delay Trigger alerono control button control point Note 1 The trigger reference point lt does not lie on the waveform This is because the post trigger delay is set to 200 us which means that the trigger occurred 200 us before the reference point somewhere off the left hand edge of the scope view The time axis is aligned so that the trigger reference point is at 200 us Note 2 The pre trigger delay is set to 25 which makes the trigger reference point appear 25 of the way across the scope view from the left hand edge Note 3 PicoScope limits the trigger to reference point delay to a multiple of the total capture time Once you have reached this limit the program will not let you increase the pre trigger delay and if you increase the post trigger delay PicoScope will reduce the pre trigger delay to stop the total exceeding the limit The multiple is typically 100 in most trigger modes and 1 in ETS mode Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 186 Reference 9 5 Trigger timing part 2 Trigger timing part 1 introduced the concepts of pre trigger delay and the post trigger delay This diagram below shows how they are related 4g PicoScope6 k l File Edit Views Measurements Tools Help
36. instrument consisting of a hardware interface and the PicoLog software running on a PC You can also use the device with the PicoScope software to create a multi channel voltage input oscilloscope PC Oscilloscope A measuring instrument consisting of a scope device and the PicoScope software running on a PC A PC Oscilloscope has the same functions as a traditional bench top oscilloscope but is more flexible and cost effective You can improve its performance by upgrading the PC using standard parts from any computer shop or by purchasing a new scope device and you can upgrade the software by downloading an update from Pico Technology Probe An accessory that attaches to your oscilloscope and picks up a signal to be measured Probes are available to pick up any form of signal but they always deliver a voltage signal to the oscilloscope PicoScope has built in definitions of standard probes but also allows you to define custom probes Progressive mode Normally PicoScope redraws the waveform in a scope view many times every second At timebases slower than 200 ms div however it switches to progressive mode In this mode PicoScope updates the scope view continuously as each capture progresses rather than waiting for a complete capture before updating the view Resolution enhancement Collecting samples at a faster rate than requested then combining the excess samples by averaging This technique can increase the effective resolution of a
37. is marked in units of time for a scope view or units of frequency for a spectrum view Channel A scope device has one or more channels each of which can sample one Signal High speed scope devices typically have one BNC connector per channel CSV Comma separated values A text file containing tabulated data with columns separated by commas and rows by line breaks CSV format is used for importing and exporting PicoScope arbitrary waveform files You can also export PicoScope waveforms in CSV format CSV files can be imported into spreadsheets and other programs DC coupling In this mode the scope device measures the signal level relative to Signal ground This shows both DC and AC components Dead time The time between the end of one capture and the start of the next To obtain the minimum possible dead time use Rapid trigger mode Demo mode If PicoScope is started when no scope device is plugged in it allows you to select a demo device a virtual scope unit that you can use to test the software The program is then in demo short for demonstration mode This mode provides a simulated configurable signal source for each input channel of the demo device ETS Equivalent Time Sampling A method of increasing the effective sampling rate of the scope In a scope view the program captures several cycles of a repetitive signal then combines the results to produce a single waveform with higher time resolution than a single captu
38. on a scope view Instead of measuring relative to the trigger point as time rulers do phase rulers measure relative to the start and end of a time interval that you specify Measurements may be shown in degrees percent or a custom unit as selected by the Ruler settings box To use the phase rulers drag the two phase ruler handles onto the waveform from their inactive position as shown below Drag to position phase rulers When you have dragged both phase rulers into position the scope view will look like this we also added two time rulers for a reason that will be explained later Ruler legend Ruler positions in time units O 3257 ps 7504 us 448 ps Oo 270 om Ruler positions in phase units Phase rulers i4 1 6 2 554 kHz Start and end phase double click to edit Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 26 PicoScope and oscilloscope primer In the scope view above the two phase rulers have been dragged into place to mark the start and end of a cycle The default start and end phase values of 0 and 360 are shown below the rulers and can be edited to any custom value For example when measuring timings on a four stroke engine it is customary to show the end phase as 720 as one cycle comprises two rotations of the crankshaft Ruler legend The phase rulers become more powerful when used in conjunction with time rulers When both types of rulers ar
39. on digital inputs Applicability MSO devices only Standard Triggerkante Set Trigger Pattern Erweiterte Triggerkante La Fenster La Impulsbreite Lf Intervall Pattern LF Fenster Impulsbreite table Wla Abbruch Wha Fenster Abbruch Trl Runtimpuls a Logik Tri m ere tenor D7 summary Trigger when the channel levels of all the selected channels agree with the chosen pattern at the same time Hilfe Sehliesen Pattern table Lists all available inputs as selected in the Digital Setup dialog Each one can be monitored for a low or high level or a rising or falling edge or ignored Any number of levels can be specified but no more than one transition edge x D7 X don t care F X D7 0 low level EJES D7 1 high level EJEA D7 R rising edge EJE D7 F falling edge Pattern summary This section contains the same settings as the pattern table but in a more concise format Binary E The numerical format to use for this section Binary or Hex adecimal The complete triggering pattern and transition In Binary mode the bits are labelled as follows X don t care ee 0 binary 0 Ba j 1 binary 1 R rising edge F falling edge Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 156 Toolbars and buttons 7 11 2 3 Logic trigger dialog Location Advanced triggering dialog gt Logic button Purpose sets up triggering on a combin
40. on the toolbar or press the start stop key on the keyboard by default the Space bar to start or stop sampling i Start icon Highlighted if the oscilloscope is sampling Stop icon Highlighted if the oscilloscope is stopped This toolbar normally resides at the bottom of the program window but can be moved to the top using the Tools gt Preferences gt Options gt Bottom toolbar at top control psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 149 7 11 Triggering toolbar The Triggering toolbar tells the scope device when to start capturing data See also Trigger Rapid me Auto rs lt il 48 715 H Ae Wo g Trigger Mode The list of available modes varies depending on the type of scope device in use None PicoScope acquires waveforms repeatedly without waiting for a signal to trigger on Auto PicoScope waits for a trigger event before capturing data If there is no trigger event within a reasonable time it captures data anyway It repeats this process until you click the Stop button Auto mode does not set the trigger level automatically Repeat PicoScope waits indefinitely for a trigger event before displaying data It repeats this process until you click the Stop button If there is no trigger event PicoScope displays nothing Single PicoScope waits once for a trigger event then stops sampling To make PicoScope repea
41. one of the available channels to a new Reference Waveform and add it to the view Select which masks see Mask Limit Testing are visible See Measurements menu Location right click on view gt Views menu gt Grid Layout gt Custom layout or Views gt Grid Layout Purpose if the Grid layout you Custom grid layout Layout section of the Views menu does not contain the want this dialog gives further options You can lay out the view grid with any number of rows and columns up to 4 by 4 You can then drag the views to different locations in the grid psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 53 6 4 Location Purpose Measurements menu 4dd Measurement Edit Measurement Delete Measurement iat Grid Font Size 8 25 Column 4uto width Menu bar gt Measurements controls the Measurements table Add measurement Adds a row to the measurements table and opens the Edit Measurement Dialog You can also find this button on the Measurements toolbar Edit measurement This takes you to the Edit Measurement Dialog You can find this button on the Measurements toolbar or you can edit a measurement by double clicking on a row of the measurements Table Delete measurement Removes the selected row from the measurements table You can also find this button on the Measurements toolbar G
42. or both Threshold 1 and Threshold 2 are the upper and lower voltage limits of the window The order in which you specify the two voltages does not matter Hysteresis can be set to reduce the number of false triggers on a noisy signal and is described in a separate topic Pulse Width This trigger type detects pulses of a specified width First set the Pulse Direction to either Positive or Negative according to the polarity of the pulse you are interested in Next set one of the four Condition options Greater than triggers on pulses wider than the specified time Less than triggers on pulses that are narrower useful for finding glitches Inside time range triggers on pulses that are wider than Time 1 but no wider than Time 2 useful for finding pulses that meet a specification Outside time range does the opposite it triggers on pulses that are either narrower than Time 1 or wider than Time 2 useful for finding pulses that violate a specification Next set the trigger Threshold in volts or other units or drag the Trigger marker on the scope view Finally set up Time 1 and Time 2 if present to define the pulse width Interval This type lets you search for two successive edges of the same polarity that are separated by a specified interval of time psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 153 First set the Starting edge to either Rising or
43. our PicoScope 4225 and 4425 PicoScopes is ConnectDetect This feature is only available when DC coupling is selected and indicates whether a channel probe has a good physical connection to the signal under test or not With ConnectDetect active the Channel LED for an enabled channel will either be green to indicate that the test probe is directly connected to a component or red to indicate that it is not This will also be shown on the PicoScope screen and can be seen below where Channel A is active To enable ConnectDetect click the ConnectDetect button in the software Bigs OFF Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 116 Toolbars and buttons 7 3 Channels toolbar The Channels toolbar controls the settings for each vertical input channel The screen shot below shows the toolbar for a two channel scope device but different scope devices may have different numbers of channels See also PicoLog 1216 toolbar that is used for the PicoLog 1000 Series Ae Auto w De Bg Auto oc RESH Each channel has its own set of buttons Ay Channel Options button Opens the Channel Options menu with options for probes resolution enhancement scaling and filtering ba Range control Sets up the scope device to capture signals over the specified range of values The list of options depends on the selected scope device and probe A red warning s
44. scope device when there is a small amount of noise on the signal More details Ruler A vertical or horizontal dashed line that can be dragged into place on a waveform in a view PicoScope displays the signal level time value or frequency value of all rulers in the Ruler Legend box Scope device The box from Pico Technology that you plug into the USB or parallel port of your computer With the help of the PicoScope software the scope device turns your computer into a PC Oscilloscope Standard deviation A statistical measure of the spread of a set of samples The Standard deviation of the set Yo is defined as sD S 7 1 where is the arithmetic mean of all the samples The units of the standard deviation value are the same as those of the original samples Tool tip A label that appears when you move the mouse pointer over some parts of the PicoScope screen such as buttons controls and rulers Trigger The part of an oscilloscope that monitors an incoming signal and decides when to begin a capture Depending on the trigger condition that you set the scope may trigger when the signal crosses a threshold or may wait until a more complex condition is satisfied psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 207 Vertical resolution The number of bits that the scope device uses to represent the Signal level This number depends on the design of
45. software 1 109 Vertical axis 12 17 19 Vertical resolution 205 View 205 enabling sub views 51 how to move 163 menu 51 scope 12 selecting channels 51 Spectrum 19 XY 17 Viewport 205 Viruses 3 W Warning symbol 116 red 12 yellow 32 Waveform 7 12 saving 39 Waveform buffers number of 99 What s new 2 Window functions 132 184 Window trigger 152 X X axis configuring 51 X Axis command 17 XNOR logical operator 156 XOR logical operator 156 XY view 17 Z Zero offset 118 Zooming 164 undo 158 Zoom overview 159 Zooming and Scrolling toolbar 158 Z ordering 120 Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 Technology PicoScope 6 User s Guide 217 Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 Pico Technology James House Colmworth Business Park ST NEOTS Cambridgeshire PE19 8YP United Kingdom Tel 44 0 1480 396 395 Fax 44 0 1480 396 296 www picotech com psw en r37 02 09 2014 Copyright 2007 2014 Pico Technology Ltd All rights reserved
46. the custom probe Click Jump forward if you have already set up the custom probe s basic characteristics and want to add or change a custom range manually psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 61 6 5 1 1 3 Probe Output Units dialog Location Create new Custom Probe dialog gt Next Purpose allows you to choose the units that PicoScope will use to display the output of your custom probe tg Custom Probe Wizard Probe Output Units Define the units that the Custom Probe will display Probes can display output in any units which helps in the interpretation of results These units will be displayed in various places including on the graph f Use a standard unit from the list C Use the custom unit defined below Enter the full name of the unit Provide a short name for the unit e g volts e g V for volts How to use the dialog To choose a standard SI unit click Use a standard unit from the list and select one from the list To enter a custom unit click Use the custom unit defined below and type the unit name and symbol A Click Next to continue to the Scaling Method dialog Click Back to return to the Create New Custom Probe dialog if this is a new probe or the Edit Existing Custom Probe dialog if this is an existing probe A Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 62 Menus
47. the convenience of the PC that s already on your desk mp PC scope device PC Oscilloscope 5 3 PicoScope basics PicoScope can produce a simple display such as the example in the Oscilloscope basics topic but it also has many advanced features The screen shot below shows the PicoScope window Click on any of the underlined labels to learn more See PicoScope window for an explanation of these important concepts Capture Setup Buffer Navigation Zooming and and toolbar toolbar Scrolling toolbar ig PicoScope 6 Menu bar File Edt Views Measurements Tools Help Channel Setup Ag Auto oc off Mg toolbar Y 1 2 0 8 0 4 0 0 0 4 Scope view 02 1 2 Time 16 Fuler l handle Se 1 0 0 8 0 6 0 4 0 2 Scale ETH ms Lofe Auto aee ela l A Stop Start Triggering Trigger toolbar toolbar marker Measurements toolbar Note Other buttons may appear in the PicoScope main window depending on the capabilities of the oscilloscope that is connected and on the settings applied to the PicoScope program psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide el Capture modes PicoScope can operate in three capture modes scope mode spectrum mode and persistence mode The mode is selected by buttons in the Capture Setup Toolbar Capture mode buttons F th 200ustd vi ixt ee ms Ea In scope mode
48. the current scope device Can be opened on any computer running PicoScope psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 41 CSV Comma delimited files csv Text Tab delimited files txt Bitmap images bmp GIF images gif Animated GIF image gif PNG images png MATLAB 4 files mat JPEG jpg Options Stores waveforms as a text file with comma separated values This format is suitable for importing into spreadsheets such as Microsoft Excel The first value on each line is the time stamp and it is followed by one value for each active channel including currently displayed math channels Details Stores waveforms as a text file with tab separated values The values are the same as those in the CSV format Details Stores a picture of the waveforms graticule and rulers in Windows BMP format The image is 800 pixels wide by 600 pixels high in 16 million colors and uncompressed BMP files are suitable for importing into Windows desktop publishing programs Stores the waveforms graticule and rulers in Compuserve GIF format The image is 800 pixels wide by 600 pixels high in 256 colors and compressed GIF files are widely used to illustrate web pages Creates an animated GIF that displays all of the waveforms in the buffer in sequence Each waveform is formatted as in the single GIF format described above Stores the g
49. the frequency in RPM revolutions per minute The RPM display can be enabled or disabled in the Preferences gt Options dialog Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 30 PicoScope and oscilloscope primer 5 21 Properties sheet Location Views gt View Properties Purpose shows a summary of the settings that PicoScope 6 is using The Properties sheet appears on the right hand side of the PicoScope window Properties Sample interval 64 ns Sampling Sample rate 15 63 MS s settings No samples 781 250 HAN Resolution 1 bits Window Blackman specirum No bins 16384 se Things Bin width 4768 Hz Time gate 7097 ms Channel Range Channel settings Coupling Res Enhancement Effective Res g g l Sig nal type signal eee generator EGET settings Amplitude Offset Time Capture Date stamp Capture Time Capture Capture Rate rate psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 31 5 22 Custom probes A probe is any transducer measuring device or other accessory that you connect to an input channel of your scope device PicoScope has a built in library of common probe types such as the x1 and x10 voltage probes used with most oscilloscopes but if your probe is not included in this list you can use the Custom Probes dialog to define a new one Custom probes can have any voltage range within the capabilities of the oscilloscope
50. the mouse pointer to the new eis Pelee GL re Z location next to the name tab of the Scope 1 view trigger Auto st A 3 Release the mouse button and the view will move to the new location Scope 1 Scope 4 Q Tigger Auto v a willak ov E 20 Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 164 How to 8 5 How to scale and offset a signal PicoScope offers several ways to change the size and position of a signal during or after capture These methods apply equally to scope views and spectrum views They do not change the stored data only the way in which it is displayed These options are provided in addition to the analog offset capability of some scopes see Device feature table Global zooming and scrolling This is usually the quickest way to get a closer look at the fine detail on your signals The global zooming and scrolling tools move all the signals at once and are found on the zooming and scrolling toolbar k AIS 914 When a view is zoomed in it has vertical and horizontal scroll bars that let you move the signals around as a group You can also use the hand tool to scroll around the graph Auto arrange axes Right click the scope or spectrum view and select Auto arrange axes Add View Channels A AXIS Grid Layout Reset View Layout View Properties Ed Reference Waveforms
51. the speed of the computer will all affect whether this limit can actually be reached PicoScope automatically selects the appropriate limit according to whether your computer is running on batteries or on mains line power The settings are in captures per second By default the capture rate is set to Unlimited when your computer is running on Mains line power for maximum performance If other applications run too slowly on your PC whilst PicoScope is capturing then reduce the capture rate limit When your computer is running on Battery power PicoScope imposes a performance limit to save the battery You can increase this limit manually but this will cause the battery power to drain very quickly psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 101 6 5 8 3 Sampling page Location Tools gt Preferences gt Sampling Purpose controls the sampling behavior of the oscilloscope Sampling Slow Sampling Transition Sets the collection time at which PicoScope 6 will try to go into slow sampling mode This is the mode where PicoScope will update the screen before the total collection time has expired Collection Time 200 ms div e Depending on device specifications PicoScope 6 may not be able to go into slow sampling mode at the required collection time in which case the nearest collection time possible will be used The slow sampling transition for the current Dev
52. to the one shown Two standard USB ports using the double headed USB cable Your scope will only operate at USB 2 0 speed E The AC adapter supplied Use this if you do not have suitable USB ports available or if your PicoScope is connected ta a USB hub USE power will be disconnected in 27 seconds S Disconnect now Connect one of the power sources listed and try again If you plug in the AC adapter the dialog will automatically close and you can continue working psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 205 9 11 Glossary AC coupling In this mode the scope device rejects very low signal frequencies below about 1 hertz This allows you to use the full resolution of the scope to measure a c Signals accurately ignoring any DC offset You cannot measure the signal level with respect to ground in this mode AWG An arbitrary waveform generator AWG is a circuit that can generate a waveform of almost any shape It is programmed with a data file supplied by the user which defines the output voltage at a number of equally spaced points in time The circuit uses this data to reconstruct the waveform with a specified amplitude and frequency Axis A line marked with measurements PicoScope shows one vertical axis for each channel that is enabled in a view giving measurements in volts or other units Each view also has a single horizontal axis which
53. trigger mode such as Auto Repeat or Single Trigger Source This is the channel that PicoScope monitors for the trigger condition Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 150 Toolbars and buttons va Rising Edge Click to trigger on the rising edge of the waveform k Falling Edge Click to trigger on the falling edge of the waveform 20 my a Trigger Level Sets the trigger level You can also set the trigger level by dragging the trigger marker up or down on the screen so 4 Pre trigger Time 0 to 100 This parameter controls how _ much of the waveform appears before the trigger point It defaults to 50 which puts the trigger marker in the middle of the screen You can also control this parameter by dragging the trigger marker to the left or right m Post trigger Delay Enable Click this button to toggle the Post trigger Delay control see next item 20 ps H Post trigger Delay The post trigger delay is the time that a PicoScope waits after the trigger point before sampling You can also modify this parameter by dragging the trigger marker while the Post trigger Delay button is enabled As you drag the marker you will see the post trigger arrow displayed briefly For this control to have an effect you must first make sure that the Post trigger Delay button is enabled See the reference topic Trigger Timing for information on how the Pre trigger Time and Post trigger Delay
54. you to set parameters for the automatically generated mask PicoScope will then create a new mask based on the last captured waveform Mask of A sms BEE 20 mV a s1 5 Generate Cancel Name X Offset Y Offset PicoScope automatically chooses a name for the new mask You can edit the name in this box The horizontal distance between the waveform and the mask s1 This button toggles the offset value between absolute units SI and relative units of full scale This button resets the offset value to its default The vertical distance between the waveform and the mask psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 97 6 5 7 Macro Recorder Location Tools gt Macro Recorder Purpose records a sequence of commands to be replayed later The Macro Recorder helps when you wish to execute a series of commands repeatedly It saves all commands to a psmacro file which can be modified using an XML editor thy Macro Recorder Recorded commands are listed here F Execute in real time eF H Start recording 7 pen saved macro Replay Stop recording Save current macro or playback Execute in real time Play back the macro at the same speed as when recorded Without this option playback will be as fast as possible Note psmacro files can also be played back from the PicoScope command line Copyrig
55. 1 Math channels 57 72 K Built In 72 Keyboard maps 102 outon 116 Keyboard shortcuts 102 158 dialog A2 Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 212 Index Math channels 57 72 Library 72 Loaded 72 overview 32 saving 39 MATLAB files exporting 44 83 saving 40 Max statistics 21 Maximum Waveforms preference 99 Measurement system selecting 103 Measurements adding 21 53 54 advanced settings 55 capture size 99 deleting 21 53 editing 21 53 filtering 21 font size 53 list of types 180 menu 53 scope 180 spectrum 181 Statistics 21 table 21 toolbar 107 137 Menus 38 Metric measurements 103 Min statistics 21 Missing events finding 152 Mission critical applications 3 MSO 205 setup 123 view 14 N NAND logical operator 156 New features 2 NOR logical operator 156 Normal Selection tool 158 Notes 48 115 importing from command line 199 Notes area 48 O Offset 164 analog 117 Open file 39 OR logical operator 156 Oscilloscope 7 Overrange indicator 12 116 Overvoltage BNC Shell to chassis 13 Normal measurement range 13 P Page Down key 39 Page Up key 39 Panning 159 Pattern trigger 155 PC Oscilloscope 8 Persistence mode 20 button 130 enabling and disabling 107 options 134 Phase rulers 25 partition 27 units 27 wrap 27 PicoLog 1000 Series 125 126 PicoScope 6 1 2 8 how to use 3 6 7 main window 11 Pointer tool tip 22 Polygon 95 Post trigger
56. 10 Flexible power esessesseessseeessseeeesseseeeeeceecerrseeeesssseeeesececersreeerssssereeeeeeeersreeeesssereecceeererrreeeesseseeeeeeeeererreeeesee 203 11 Glossary sessessssssseeeeesecersseeeessssreeeeceeeeerrrcersssseeeeecceererrreresssseteereeeeerarereessssrteeeeeeeersseetessssreeeeeeeeesereeeesee 205 Ader aren T T ioeneestereeamionmmnseet astooaunaces 209 Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 Technology PicoScope 6 User s Guide 1 1 Welcome Welcome to PicoScope 6 the PC Oscilloscope software from Pico Technology With a scope device from Pico Technology PicoScope turns your PC into a powerful PC Oscilloscope with all the features and performance of a benchtop oscilloscope at a fraction of the cost How to use this manual What s new in this version Using PicoScope for the first time Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 2 PicoScope 6 overview 2 PicoScope 6 overview PicoScope 6 is Pico Technology s software for PC Oscilloscopes Higher performance Faster capture rates making it easier to see fast moving signals Faster data processing Better support for the latest PicoScope USB oscilloscopes Improved usability and appearance Clearer graphics and text Tool tips and help messages to explain all features Easy point and click tools for panning and zooming New features Microsoft i MET Propenmbes T
57. 128 4 0 256 Example Your scope device is a PicoScope 5204 resolution 8 bits You have selected an effective resolution of 9 5 bits The resolution enhancement is therefore e 9 5 8 0 1 5 bits The table shows that this is achieved using a moving average of n 8 samples This number gives a guide to what sort of filtering effect the resolution enhancement will have on the signal The best way of seeing the actual low pass filter effect is to add a spectrum view and look at the shape of the noise floor try dragging the y axis upwards to see the noise more clearly Related topics See Hardware resolution applies to Flexible Resolution Oscilloscopes only Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 120 Toolbars and buttons 7 3 1 2 Axis scaling controls The axis scaling controls are control boxes that let you change the scale and offset of each vertical axis individually If the axis belongs to a reference waveform then you can also adjust its delay relative to the live waveforms Scale Als Scale Hls Offset 0 00 4 Offset 0 00 E 4 BH o os Controls for a live waveform Controls for a reference waveform There are two ways to open the axis scaling control For any channel displayed in a view click the colored scaling button E at the bottom of the vertical axis For any input channel Click the Channel Options button in the Channels tool
58. 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 67 The range utilisation bar This diagram at the bottom of the dialog shows how well the input range of the device is matched to the scaled range Scaled Range Input Range Unused Used Unused portion of portion of portion of Input range input range scaled range e Green The section of the input range that is used by the scaled range This Should be as large as possible to maximise the use of the scope device s resolution e Blue Areas of the input range that are not being used These indicate wasted resolution e Grey Parts of the scaled range that are not covered by the input range These will result in wasted space on the graph The range utilisation bar may not represent these areas accurately when non linear scaling is being used so you Should always test the scaled range limits on the scope view Advanced tab Finishing Clicking OK or Cancel will return you to the Manual Ranges Setup dialog Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 68 Menus 6 5 1 1 6 2 Edit Range dialog Advanced tab Location Manual Ranges Setup dialog gt Edit or New Range gt Advanced tab Purpose configuring advanced options for custom probes For advanced users only Itis strongly recommended that you do not change these settings Wavetom Inversion f Recommended Do not Inver
59. 480 396296 Office hours 09 00 to 17 00 Mon Fri Technical support email Support picotech com Sales email Ssales picotech com Web site www picotech com 3 5 How to use this manual If you are using a PDF viewer to read this manual you can turn the pages of the manual as if it were a book using the Back and Forward buttons in your viewer These buttons should look something like this q or aP Back F or V Forward You can also print the entire manual for reading away from your computer Look for a Print button similar to this d Print For your first introduction to PicoScope we suggest that you start with these topics Using PicoScope for the first time Oscilloscope basics PC Oscilloscope basics PicoScope basics psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 3 6 System requirements To ensure that PicoScope operates correctly you must have a computer with at least the minimum system requirements to run your Windows operating system which must be one of the versions listed in the following table The performance of the oscilloscope will be better with a more powerful PC and will benefit from a multi core processor Item Minimum specification Recommended specification Operating system Windows XP SP3 Windows Vista Windows 7 or Windows 8 32 bit or 64 bit edition Not Windows RT Processor 300 MHz 1 GHz Memory 256 MB 512 MB Free disk space 1 G
60. 7 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide III 2 Signal Generator dialog USB DrDAQ eeeeeeeeeeeeeeetreeeeetttrreereteeeeerertsereerertesseeerttesrseetetteseeeeeeressseeeteessettts 141 3 Arbitrary waveform files erect teeter tte eecaeeeaeceaneccaneeeaatecaaecasrecaseceaneseaneccaniesenienanenagenn 142 4 Arbitrary Waveform Generator Window vice eet ete etc eecneccnaccnnecaaenaanetaaeceaessaty 143 5 Demo Signals meny oes eerste teeetee se eeeseeeesnneecaeeccaneneaeeccanecasnesasnecsassecsassecsasseceaseceasecsaeenessnstsgey 146 6 Demo Signals dialog seer ter teeter tee teeee ceca eecaneecaneccaneecanenansecaasecaaneneaneceusccassenasrenasenaaneneseneanessagy 147 10 St rt Stop toolbar cice ieee eea e ee esq usssuncnnecn nian E E E 148 11 Triggering toolbar sinonieme a e aa EEEE E ERE EA Ra a TE EEE Ee 149 1 Advanced Triggering dialog eeeeeeeereeeeeeeeeettteeeeeteeeeeesteeeerrtseteerettssseeetteseeeetetesseeteteeeettetteessettteesseeeeeeentet 151 2 Advanced trigger types vrs trteriesteesieesss tees teesnnteecanescnnescanensanessnnecssesecssnsecsassessuneseanessunsessanenssniensgnies 152 12 Zooming and Scrolling toolbar csssesssssceccsesessssssssssssennnssseccccesssessessssssssennnesssscceessssssessssssssseeessees 158 1 Zoom Overview eee ry ee er ee eee rr eee eee Te 159 OFTON CO icc aeon ari seianuaa aes ounalvenaye vammcanuea E A 160 1 How to change to a different device ccssccssccssressrce
61. 7 2014 Pico Technology Ltd All rights reserved psw en r37 20 PicoScope and oscilloscope primer 5 12 Persistence mode Persistence mode superimposes multiple waveforms on the same view with more frequent data or newer waveforms drawn in brighter colors than older ones This is useful for spotting glitches when you need to see a rare fault event hidden in a series of repeated normal events Enable persistence mode by clicking the Persistence Mode button L on the Capture Setup toolbar With the persistence options set at their default values the screen will look something like this y PicoScope 6 File Edit Views Tools Help As du F Gb sousiaw O la AE rie PARDO 14 Ag 2500mV oc x Bg off v pc Ae E Q pri m x m n O Trigger auto Mint ia R 56sm e s0 El Ae The colors indicate the frequency of the data Red is used for the highest frequency data with yellow for intermediate frequencies and blue for the least frequent data In the example above the waveform spends most of its time in the red region but noise causes it to wander occasionally into the blue and yellow regions These are the default colors but you can change them using the Persistence Options dialog This example shows persistence mode in its most basic form See the Persistence Options dialog for ways to modify the display to suit your application and How to find
62. 7 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 145 7 9 4 1 Import from a Channel dialog Location Arbitrary Waveform window gt Import from a Channel button Purpose allows you to copy captured data from a scope channel to the Arbitrary Waveform window Import from a Channel Select Channel Select Samples between ol C between Time rulers Number of samples on channel A 6255 Details Samples being imported 6255 AWG limit 4096 Data Resampled Select Channel You can import the latest waveform from any available channel Select Samples By default the entire capture is imported This control allows you to specify a subset of the capture either between specified sample numbers or between rulers The subset will be scaled to fit the number of samples specified in the Samples control in the Arbitrary Waveform window Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 146 Toolbars and buttons 7 2 5 Demo Signals menu Location start PicoScope with no scope connected gt Connect Device dialog gt select demo device gt Signal Generator button Purpose allows you to set up test signals so that you can experiment with PicoScope when no scope device is connected When you click the Signal Generator button Ci a drop down list of all the available channels in the demo device appears like this A Sine 1
63. 9 Runt pulse trigger 152 198 S Sampling preferences 101 Sampling rate 130 Save As 39 dialog 40 Save file 39 Save on trigger 92 174 Scaling 8 164 button 120 Scaling Method dialog 62 Scope device 205 Scope measurements AC volts 180 Cycle time 180 DC volts 180 Duty cycle 180 Fall time 180 Falling rate 180 Frequency 180 High pulse width 180 Low pulse width 180 Maximum 180 Minimum 180 Peak to peak 180 Rise time 180 Rising rate 180 Scope mode 9 button 130 Scope view 10 12 Scrolling 164 Selection tool normal 158 Send channel to back 120 Serial decoding 34 57 data window 90 dialog 85 link file 90 protocols 187 Serial number of oscilloscope 109 Settings saving 39 Signal difference how to measure 161 Signal generator button 138 dialog 138 sweep mode 138 198 triggering 198 Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 214 Index Signal generator USB DrDAQ 141 Waveform types 183 12 17 19 23 101 101 Signal rulers Sinx x x preferences Slow sampling transition Smoothing 101 Software version 1 Sound file 92 Space bar 148 Spectrum measurements Amplitude at peak 181 Frequency at peak 181 Intermodulation Distortion IMD Signal to Noise Ratio SNR 181 Spurious free Dynamic Range SFDR Total Harmonic Distortion THD 181 Total Harmonic Distortion plus Noise THD N 181 Total power 181 181 181 Spectrum mode 9 button 130 enabling and
64. All rights reserved psw en r37 134 Toolbars and buttons 7 6 2 Persistence Options dialog This dialog appears when you click the Persistence Options button My in the Capture Setup toolbar It is available only when persistence mode is selected It controls the colors and fading algorithm used to distinguish new or frequent data from old or intermittent data in the persistence view Made Decay Time ms lt Advanced Saturation 9 p Decayed Intensity 26 Custom Line Drawing Phosphor Emul Color Scheme Phosphor w Background Data Hold Persistence Mode Mode Decay Time Saturation Decayed Intensity User Preferen cel Decay Timeout Time Decay Digital Color This mode uses a range of colors to indicate the frequency of waveform data Red is used for the most frequent data and less frequent data is represented successively by yellow and blue Analog Intensity This mode uses color intensity to indicate the age of waveform data The latest data is drawn at full intensity in the selected color for that channel with older data being represented by paler shades of the same color Advanced This mode opens up a Custom Options section at the bottom of the dialog that let you customise the persistence mode display The time in milliseconds taken for waveform data to fade from maximum intensity to minimum intensity or from red to blue The longer the decay time
65. Arbitrary Waveform window This button is available only if your scope has an arbitrary waveform generator Start Frequency Type in this box or use the spin buttons to select the frequency If the scope device has a frequency sweep generator then this box sets the start frequency of the sweep psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 139 Amplitude The amplitude of the waveform measured from peak to peak For example if Amplitude is 1 V and Offset is 0 V the output will have a negative peak of 0 5 V and a positive peak of 0 5 V Offset The mean value of the signal For example when Offset is 0 V a sine or Square wave will have equal positive and negative peak voltages 7 9 1 2 Sweep controls The signal generator normally generates a fixed frequency set by the Start Frequency Control In sweep mode it generates a frequency that varies between two specified limits Sweep Mode Active Sweep Type Up Stop Frequency 1 kHz Frequency Increment 10 Hz a Increment Time Interval 1 ms H Active Tick this box to enable sweep mode Sweep Type Specifies the direction in which the frequency is swept Stop Frequency In sweep mode the generator stops increasing the frequency when it reaches the Stop Frequency Frequency Increment In sweep mode the generator increases or decreases the frequency by this amount every Increment Ti
66. B 2 GB USB 2 0 port USB 2 0 Ports USB 2 0 port AED ae USB 3 0 port USB 3 0 oscilloscopes The PicoScope software does not use all the disk space specified in the table The free space is required to make Windows run efficiently Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 6 Using PicoScope for the first time 4 Using PicoScope for the first time We have designed PicoScope to be as easy as possible to use even for newcomers to oscilloscopes Once you have followed the introductory steps listed below you will soon be on your way to becoming a PicoScope expert Install the software Load the CD ROM that is included with your scope device then click the Install Software link and follow the 1 i i on screen Instructions Plug in your scope device Windows will recognise it and prepare 5 your computer to work with it Wait until Windows tells you that the device is ready to use 3 Click the new PicoScope icon on your Windows desktop PicoScope will detect your scope device and prepare to display a 4 waveform The green Start button will be highlighted to show that PicoScope is ready Connect a signal to one of the scope device s input channels and 5 see your first waveform To learn more about using PicoScope i please read the PicoScope Primer Problems Help is at hand Our technical support staff are always ready to answer your telephone call during office hours see our Contact Detai
67. Falling according to the polarity of the edges you are interested in Next select one of the four Condition options Greater than triggers when the second edge occurs later than Time 1 after the first edge useful for detecting missing events Less than triggers when the second edge occurs earlier than Time 1 after the first edge useful for detecting timing violations and spurious edges Inside time range triggers when the second edge is later than Time 1 after the first edge and earlier than Time 2 useful for finding valid edges Outside time range triggers when the second edge is earlier than Time 1 after the first edge or later than Time 2 useful for finding Spurious edges Finally set up Time 1 and Time 2 if present to define the time interval Window pulse width This is a combination of the window trigger and the pulse width trigger It detects when the signal enters or leaves a voltage range for a specified period of time Level dropout This detects an edge followed by a specified time with no edges It is useful for triggering on the end of a pulse train Window dropout This is a combination of the window trigger and the dropout trigger It detects when the signal enters a specified voltage range and stays there for a specified time This is useful for detecting when a signal gets stuck at a particular voltage Runt Detects a pulse that crosses one threshold and then falls below the same threshold without cros
68. How to use Serial Decoding 1 Select the Tools gt Serial Decoding menu command 2 Complete the Serial Decoding dialog 3 Choose to display the data In Graph In Table or both 4 You can decode multiple channels in different formats simultaneously Use the Decoding tab below the In Table data table shown in the picture above to select which channel of data to display in the table psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 35 5 26 Mask limit testing Mask limit testing is a feature that tells you when a waveform or spectrum goes outside a specified area called a mask drawn on the scope view or spectrum view PicoScope can draw the mask automatically by tracing a captured waveform or you can draw it manually Mask limit testing is useful for spotting intermittent errors during debugging and for finding faulty units during production testing To begin go to the main PicoScope menu and select Tools gt Masks gt Add Masks This opens the Mask Library dialog When you have selected loaded or created a mask the scope view will appear as follows File Edit Views Measurements Tools Help P TL ale F 200 ns div x1 al 1MS DC v Ba of a DRESSES Span Test Failures Value Mask Failures Whole trace Pass 13 O Trigger auto E ila ov H2 EVR DED A Mask B Failed waveforms C Measurements table Shows the
69. Lines the horizontal and vertical lines on the graticule Markers the horizontal and vertical rulers that you can drag into position to help measure features on the waveform Reset Colors to Default Resets all of the color and line thickness settings to their default values psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 107 6 5 8 8 Options page Location Tools gt Preferences gt Options Purpose lets you set various options that control the way that PicoScope 6 works Options l Device Startup Settings Remember the last device connected and attempt to connect by default C Remember Last Device Advanced Features Enable PicoScope 6 Beta advanced features Spectrum Trigger Delay Persistence Rapid Trigger Zoom Overview C RPM Move Trigger toolbar to top Recent Files 4 Reset recent files list Device Startup Settings Remember Last Device This option is used when PicoScope finds more than one scope device If the check box is ticked PicoScope will attempt to use the same device that was used last time Otherwise it will use the first device available Advanced Features The advanced capture modes are enabled by default in PicoScope 6 and disabled by default in PicoScope 6 Automotive Regardless of the version that you have you can enable or disable these features using the following options Spectrum Spectrum view and spectrum analyzer f
70. Magnitude mode Peak Hold the spectrum view shows a rolling maximum of the spectra calculated from all the waveforms in the buffer In this mode the amplitude of any frequency band in the spectrum view will either stay the same or increase but never decrease over time To clear the peak hold data click Stop and then Start or change from Peak Hold mode to Magnitude mode Note when you switch to Average or Peak Hold mode there may be a noticeable delay while PicoScope processes the entire contents of the waveform buffer which may contain many waveforms to build up the initial display If this occurs a progress bar appears at the bottom of the window to show that PicoScope is busy Scale Specifies the labelling and scaling of the vertical signal axis This can be one of the following Linear The vertical axis is scaled in volts Logarithmic The vertical axis is scaled in decibels referred to the level selected below in the Logarithmic unit control dBV Reference level is 1 volt dBu Reference level is 1 milliwatt with a load resistance of 600 ohms This corresponds to a voltage of about 775 mV dBm Reference level is one milliwatt into the specified load impedance You can enter the load impedance in the box below the Logarithmic unit control Arbitrary dB Reference level is an arbitrary voltage which you can specify in the box below the Logarithmic unit control Copyright 2007 2014 Pico Technology Ltd
71. Reset Colors to Defaut Custom Colors These controls let you specify the colors for various parts of the PicoScope screen Channels the trace color for each scope channel Digital Channels if you have a mixed signal oscilloscope MSO the color of each channel can be set here Masks the mask areas in Mask Limit Testing Misc miscellaneous items Grid lines the horizontal and vertical lines on the graticule Background the area behind the waveforms and graticule In persistence mode this setting can be overridden by the Persistence Options dialog Live trigger the trigger marker for the current trigger position Trigger secondary trigger marker appears when the live trigger has moved since the last waveform capture Horizontal axis the numbers across the bottom of each view which usually indicate time measurements Rulers the horizontal and vertical rulers that you can drag into position to help measure features on the waveform Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 106 Menus Persistence the three colors to use for each channel in digital color persistence mode The top color is used for the most frequently hit pixels the middle and bottom colors for the less and least frequently hit pixels Line Thickness These controls let you specify the thickness of the lines drawn on the scope and spectrum views Channel the waveforms and spectrum traces for all scope channels Grid
72. Scope n otes lt notes filename gt lt filename gt lt notes filename gt Specifies a single text file lt filename gt Specifies a single psdata or pssettings file Example PicoScope n C Temp source txt C Temp source psdata To run an automation command PicoScope A a Run automation command or macro on an existing instance of PicoScope 6 Syntax PicoScope a utomation lt command gt lt macro gt lt command gt Automation command lt macro gt Path to psmacro file containing a macro psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 201 Examples PicoScope a Run Pressed True PicoScope a MyMacro psmacro PicoScope a prints a list of automation commands to the console PicoScope a Measurements prints information on the Measurements command An instance of PicoScope must be running before any automation command is issued Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 202 Reference 7 9 Application Error dialog If there is a problem with PicoScope and the program needs to close the Application Error dialog appears y PicoScope 6 Beta mE PicoScope 6 Beta has encountered a problem and needs ih to close We are sorry for the inconvenience PE We have created an error report that you can send to help us improve PicoScope 6 Beta To see what this report contains click here Reports are sent au
73. Shows the digital channels and groups See digital view Splitter Drag up and down to move the partition between analog and digital sections psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 15 5 1 Digital view Location MSO view Digital channel Digital group Note 1 You can right click on the digital view to obtain the Digital Context Menu Note 2 If the digital view is not visible when required check that a the Digital Inputs button s activated and b at least one digital channel is selected for display in the Digital Setup dialog Digital channel Displayed in the order in which they appear in the Digital Setup dialog where they can be renamed Digital group Groups are created and named in the Digital Setup dialog You can expand and collapse them in the digital view using the E and buttons Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 16 PicoScope and oscilloscope primer 5 2 Digital context menu Location right click on the digital view Sub View Format Draw Groups Sub View Analog Analog View or hide the analog E scope view Digital Digital View or hide the digital scope view Also available from the Views menu Format Hex The numerical format in which group 7 values are displayed in the digital Binary scope view
74. The small arrow sets options for the oscilloscope input the BNC socket marked Scope with options for probes and scaling Click the channel name to toggle the channel on or off Resistance input control The small arrow sets options for the 0 to 1 MQ resistance measuring input on the screw terminal block Click the channel name to toggle the channel on or off pH input control The small arrow sets options for the pH and ORP oxidation reduction potential measuring input Click the channel name to toggle the channel on or off Temperature sensor control The small arrow sets options for the on board temperature sensor Click the channel name to toggle the channel on or off Light sensor control The small arrow sets options for the on board light level sensor Click the channel name to toggle the channel on or off External sensor controls The small arrows set options for external sensor inputs 1 to 3 Click the channel name to toggle the channel on or off Signal generator button Opens the Signal Generator dialog which allows you to set the characteristics of the signal generator output RGB LED button Opens the RGB LED Control dialog which allows you to set the color of the on board LED Digital Outputs button Opens the Digital Outputs dialog which allows you to control the states of the four digital outputs Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 128 Toolbars and buttons 7 5
75. You can set the color of the trace to one of the standard colors in the drop down list or click Custom to choose any color allowed by Windows psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 85 6 5 4 Serial Decoding dialog Location Tools gt Serial Decoding Purpose lets you choose which channels to use for serial decoding and set other options The following formats are supported 2 rc CAN Bus gt LIN FlexRay 9 1 25 RS232 UART SPI gt USB Single Ended Channel Threshold o ea d i Information Samples required is 46 08 k5 Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 86 Menus Protocols table B Hone selected gt m Bo a a ac TTT ETTET l ae None selected gt CAN High CAN Low ao LIN RS234 UART USB Single Ended 275 SPI This is where you select which channels to decode and what serial protocol to use for each channel All the available channels are listed in the Channels column gt If the channel you want to use is not listed enable it first by using the Channels toolbar For each channel that you want to decode click in the Protocols column A drop down list will appear containing all the protocols that PicoScope understands The list may vary depending on which version of PicoScope you are using For multi channel protocols like IC and SPI select the data chann
76. a glitch using persistence mode for a worked example psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 21 5 13 Measurements table A measurements table displays the results of automatic measurements Each view can have its own table and you can add delete or edit measurements from this table BA AC RMS Whole trace 295 4mV 295 3 mV 293 6 mV 295 5 mV 5 4uV 20 BA Frequency Whole trace 10 48 kHz 10 01kHz 10 48 kHz 10 27 kHz 152 Hz 20 BA Rise Time 80 20 Whole trace 1 1ps 1 06 ps L112 ps 1 09 ps 15 22ns 20 Measurements table columns Name The name of the measurement that you selected in the Add Measurement or Edit Measurement dialog An F after the name indicates that the statistics for this measurement are filtered Span The section of the waveform or spectrum that you want to measure This is Whole trace by default Value The live value of the measurement from the latest capture Min The minimum value of the measurement since measuring began Max The maximum value of the measurement since measuring began Average The arithmetic mean of the measurements from the last n captures where n is set in the General page of the Preferences dialog o The standard deviation of the measurements from the last n captures where n is set in the General page of the Preferences dialog Capture The number of captures used to create the statistics above This star
77. al data format For accurate decoding please make sure that PicoScope is capturing at least this number of samples The current number of Samples is shown in the Properties Window Views menu gt View Properties psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 89 6 5 4 1 Advanced Decoder Settings dialog Location Tools gt Serial Decoding gt Advanced Settings Purpose Controls serial decoding settings that are not shown in the Serial Decoding dialog Protocol Bit Order Clock Sampling Edge Decoding Graph section Packet Display Bit Order MSE first Rising Whole trace MSE first Each protocol has its own selection of options from the following list Protocol Bit Order Decoding Graph Section Clock Sampling Edge Invert Packet Bits Packet Start Edge Data Bits Parity Bits Stop Bits ChipSelect Active State The bit order most significant first or least significant first as defined by the protocol For protocols with application specific bit order such as UART you must set this to match to the data format Which section of the waveform to decode all of it or just the part between the time rulers On which edge of the clock to sample data bits Invert all data bits For self clocked protocols whether rising or falling edge indicates start of packet The number of bits in the data payload of each packet The number of parity che
78. allowed area in white and the disallowed area in blue Right clicking the mask area and selecting the Edit Mask command takes you to the Edit Mask dialog You can change the mask colors with the Tools gt Preferences gt Colors dialog add remove and save masks using the Masks menu and hide and display masks using the Views gt Masks menu If the waveform enters the disallowed area it is counted as a failure The part of the waveform that caused the failure is highlighted and persists on the display until the capture is restarted The number of failures since the start of the current scope run is shown in the Measurements table You can clear the failure count by stopping and restarting the capture using the Start Stop button The measurements table can display other measurements at the same time as the mask failure count Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 36 PicoScope and oscilloscope primer 5 27 Alarms Alarms are actions that PicoScope can be programmed to execute when certain events occur Use the Tools gt Alarms command to open the Alarms dialog which configures this function The events that can trigger an alarm are Capture when the oscilloscope has captured a complete waveform or block of waveforms Buffers Full when the waveform buffer becomes full Mask s Fail when a waveform fails a mask limit test The actions that PicoScope can execute
79. ame Parity A two bit value calculated on the data Data count Number of bytes of data in the frame Data bytes The data content of the message psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 195 Checksum Calculated Checksum Error Start Time End Time Packet Time Min Voltage Max Voltage Voltage Delta A cyclic redundancy check of the data hexadecimal The checksum expected by PicoScope Set if PicoScope detects an error Value of PicoScope timebase at start of frame Value of PicoScope timebase at end of frame The duration of the packet End Time Start Time Minimum voltage Maximum voltage Voltage range of the signal Max Voltage Min Voltage Display of these items is toggled on and off by the Statistics button Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 196 Reference 2 6 7 FlexRay protocol You can decode FlexRay data using the serial decoding feature built into PicoScope The in window view of the data looks like this Serial Decoding ox Export Accumulate View Link None v Start from Filter Statistics Search Refresh Clear No Packet TSS Fss je Prom Fame Fame Fame Frame ID pag Header e me _m_4___2__ __t__1__2__2__ __2__ __1__sumannnneuneseennnnnnea nme i T fl E A FLEXRAY BETA The columns in th
80. ation of inputs Applicability all devices with more than one active input Simple Edge gt Simple Edge Digital _f Advanced Edge LF Window Level Window LE Pulse Width Direction Inside Log ic U Interval Threshold 1 ov contro La Window Pulse Width Threshold 2 ov Ula Level Dropout Hysteresis H 5 Ug Window Dropout pa Input E controls Trigger when the signal levels of all the selected channels agree with the chosen logic condition at the same time Help Close Input controls There is a set of controls for each active input of the oscilloscope The selection of inputs depends on the model of oscilloscope in use The selection of controls thresholds hysteresis window mode and so on for each input also depends on the hardware capabilities of the oscilloscope A Channel A B Channel B Channel C D Channel D Ext EXT input if present AudO AUX input if present Digital Digital inputs mixed signal oscilloscopes only The controls here are the same as those in the Digital Trigger dialog Check this box to include the relevant input in the Logic Used Trigger condition If the box is not checked the input will be ignored by the Logic Trigger psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 157 Logic control Specifies the Boolean operation used to combine the input Logic trigger condi
81. aused by the nonlinear mixing of two tones When multiple signals are injected into a device modulation or nonlinear mixing of these two signals can occur For input signals at frequencies f1 and f2 the two second order distortion signals will be found at frequencies f3 f1 f2 and f4 f1 f2 IMD is expressed as the dB ratio of the RMS sum of the distortion terms to the RMS sum of the two input tones IMD can be measured for distortion terms of any order but the second order terms are most commonly used In the second order case the intermodulation distortion is given by FFs IMD 20lo 3 4 I Ea where F3 and F4 are the amplitudes of the two second order distortion terms at frequencies f3 and f4 defined above and F1 and F2 are the amplitudes of the input tones at frequencies f1 and f2 as marked by the frequency rulers in the spectrum window For reference the third order terms are at frequencies 2F1 F2 2F1 F2 F1 2F2 and F1 2F2 Note Hanning or Blackman windows are recommended because of their low noise An FFT size of 4096 or greater is recommended in order to provide adequate spectral resolution for the IMD measurements Mask Failures See Mask Limit Testing psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 183 9 2 Signal generator waveform types The list of waveform types available in the Signal Generator dialog va
82. automatic range selection Min 0 1 Max 1 1 lt Back cancel Units Long Name This is for your reference only Units Short Name This will be displayed on the measurement axis in scope and spectrum views in the ruler legend and in the measurements table Range If you leave the check box empty PicoScope will choose the most appropriate range for the measurement axis If you prefer to set your own values for the minimum and maximum extremes of the measurement axis tick the check box and enter them in the Min and Max boxes Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 82 Menus 6 5 2 1 5 Math Channel Wizard Finished dialog Location Math Channel Wizard Purpose shows you the settings for the math channel that you have just created or edited Finished The Maths Channel creation process is complete Press Finish to continue Formula A BVA Color Black Automatic range scaling Automatic unit selection Back Click this button to return to previous dialogs in the Math Channel Wizard if you wish to change any of the settings Finish Click this button to accept the settings shown and return to the Math Channels dialog If you want the new or edited channel to appear on the scope or spectrum display remember to tick the appropriate check box in the channel list You can change them later by clicking the Math Channels button in the Channel Setup toolbar psw en
83. bar 1 00 s Scale control Increase to magnify the waveform decrease to reduce it The vertical axis rescales accordingly so that you can always read the correct voltage from the axis Click the reset button Eh to return to a scale of 1 0 The scaling button always shows the selected scale 0 00 E s Offset control Increase to move the waveform up the display decrease to move it down The vertical axis shifts accordingly so that you can always read the correct voltage from the axis Adjusting this control is equivalent to clicking and dragging the vertical axis Click the reset button to return to an offset of 0 00 Os s Delay control for reference waveforms only Increase to move the waveform to the left relative to the timing reference point decrease to move it to the right Click the reset button Eh to return to a delay of Os The location of the timing reference point depends on which trigger mode PicoScope is in If the trigger mode is None then the delay is measured relative to the left hand edge of the display In all other trigger modes the delay is measured relative to the trigger marker Ea Send to back Draws the channel behind all others Use if the channel E is obscuring another channel of interest Ea Bring to front Draws the channel in front of all others Use if the a channel is hidden behind another psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 121
84. bes Define new probes and copy delete move and edit existing ones Math Channels Add or edit a channel that is a mathematical function of one or more other channels Reference Waveforms Create load or save a channel as a copy of an existing channel Serial Decoding Decode and display the contents of serial data stream such as CAN bus Alarms Specify actions to be taken on certain events Masks Perform mask limit testing on a waveform This detect when the waveform departs from a specified shape Macro Recorder Save a frequently used sequence of operations Preferences Set various options that control PicoScope s behavior Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 58 Menus 6 5 1 Custom Probes dialog Location Tools gt Custom Probes or click the Channel Options button Aa Purpose allows you to select predefined probes and set up custom probes Custom Probes Select a probe N Built in x1 Explain what Built in Library and Loaded probes are The selection of probes shown may vary depending on the version of the PicoScope software that you are using Understanding the probe list All the probes that PicoScope knows about are listed under three main headings Built in Library and Loaded The probe list is preserved between sessions so that PicoScope will never forget your custom probes unless you delete them Built in probes The built in prob
85. can either draw straight lines between the samples linear interpolation or connect them with smooth curves sin x x interpolation Linear interpolation makes it easier to see where the samples are which is useful for high accuracy measurements but results in a jagged waveform Sin x x interpolation gives a smoother waveform but disguises the true locations of the samples so should be used with care when the number of samples on the screen is low You can adjust the number of samples below which sin x x interpolation is switched on Sin x x interpolation is used only on the scope s fastest timebase Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 102 Menus 6 5 8 4 Keyboard page Location Tools gt Preferences gt Keyboard Purpose displays and allows you to edit keyboard shortcuts A keyboard shortcut is a combination of keys that can be pressed on the keyboard to activate a PicoScope operation keyboard Keyboard Shortcuts Show Full Key List All available Ctrl Alt Right ee Previous Ctrl Alt Lett ieee cif anne ae iia E Channel defined are igh listed here Er Analog Offset PG Decrement Increment a 3 oo Previous Enabled a eval Define new shortcuts Manage keyboard maps select keyboard map User x Export Keyboard Shortcuts This is a list of PicoScope operations and their associated keyboard shortcuts if defined The extent of the list
86. ccretari eea 116 1 Channel Options meny eeeeeesesseeeeeeetereerreeeerttseeeeererertesesseerrretteessestteeeeeessneseeeeeeesnnseeeeeteensenteeeeteeesesteeeeeeeeesntet 117 2 Digital Inputs Bye Cara nx aes ees ee tocn rinii A NiE E va aces caine ab ESEE EREE EE EE EAE EREE ES 123 4 PicoLog 1000 Series Channels toolbar 00000000000000000000ssessooosssssescoossssssssesosssssessssosssssssssoosssssssssssssssssesso 125 1 PicoLog 1000 Series Digital Outputs a e E E ET ee 126 5 USB DrDAQO Channels toolbar e mrroinoriri ee enron EEEIEE EEEE EREE const EATER 127 1 USB DrDAQ RGB LED control eeeeeeeeeeereererrererrererrererreerrreeerteeerreersrererteessreeerreeenreeerrteenreeernteenteeesreeernreenreeesreeesnt 128 2 USB DrDAQ Digital Outputs control ee eee eee tt tte teeeeeeaeenaaenenneccnnecnnnecanenaanenaaeseanessany 129 6 Capture Setup toolbar res eee ce soe re cs esteem E dvecanaeh bocce A waa waceestevacee eh voces E S OAOE Eh 130 1 Spectrum Options dialog EESE NSE SE ESETE ES ET EOS S E S ESES 132 2 Persistence Options dialog E TIE AE EN AEE EEE EEE EENAA EEA EA EEA E AEE ce 134 7 Buffer Navigation toolbar sicircisseciiooiesirinessneni ne EE EE Ea Ea SAECO EEE EENE EDAS 136 8 Measurements toolbar isn resis ens ah wee as cre aad ces sa cee tw en cde eds 137 9 Signal Gener tor DUI OA a a a a Wed aeledecewweaa Road weamevewnsemabed A a O TAENSA 138 1 Signal Generator dialog PicoScope devices a a a ARO D nanan ry Tee 138 psw en r37 Copyright 200
87. cking bits in each packet The number of fixed bits at the end of each packet The polarity of the Chip Select signal Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 90 Menus 6 5 4 2 Serial Data window Location Channels toolbar gt Serial Decoding button gt select In Table in the Serial Decoding dialog Purpose Shows decoded serial data in alphanumeric format and allows advanced filtering and searching For more information on the format of the table for each serial protocol see Serial protocols If you also selected In Graph in the Serial Decoding dialog the data will also appear in graphical form on the scope view You can click on one of the data packets in the scope view to go to the corresponding row in the table or you can double click a row in the table to zoom to the corresponding frame in the scope view Click any heading to sort column Right click to change display format Export Accumulate View Link lt None gt Start from Filter Statistics Search A 3 Data o1 Yes 2 242 ms o oo mS 4 Data Oe Yes 2 24 ms 3 424 ms T Address Fit WRITE Yes SOF ms 5 607 ms E Data 1F Yes 6 514 ms 6 615 ms Channel selection tab Control bar The controls in the control bar are as follows Export Save the decoded data to a Microsoft Excel spreadsheet Accumulate By default PicoScope clears the table each time the scope captures a new buffer full of data Click this but
88. coding feature built into PicoScope The in window view of the data looks like this E A SPl Statistics d Search gt Refresh Clear The columns in the data table are as follows Column No Packet Data bytes Start Time End Time Packet Time Min Voltage Max Voltage Voltage Delta Description Serial number of the packet decimal If Accumulate mode is off this counts from the start of the selected waveform If Accumulate mode is on this counts from the start of the first waveform in the waveform buffer Packet type Start Stop Address Data or Unknown Contents of data packets Time according to PicoScope timebase at start of frame Time according to PicoScope timebase at end of frame The duration of the packet End Time Start Time Minimum voltage Maximum voltage Voltage range of the signal Max Voltage Min Voltage Display of these items is toggled on and off by the Statistics button Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 190 Reference 9 6 3 I2C protocol You can decode I2C Bus data using the serial decoding feature built into PicoScope The in window view of the data looks like this L799 me L491 me 2085 ms 2183 ms 3 091 ms 3 191 me 3202 ms 3 202 mE 3 313 ms 3413 ms 2424 me 3 524 ms 3 597 ms 3 658 ms The columns in the data table are as follows Column Description No Serial number of the packet deci
89. commonly used window functions that can be convolved with the data to effect this fading and which are chosen according to the type of signal and the purpose of the measurement The Window Functions control in the Spectrum Options dialog lets you select one of the standard window functions for spectrum analysis The following table shows some of the figures of merit used to compare the functions Window Main peak Highest Side lobe Notes width bins side lobe roll off 3 dB dB dB octave Blackman 1 68 58 18 often used for audio work Gaussian 1 33 to 1 79 l 42 to 69 6 gives minimal time and frequency errors Triangular 1 28 27 12 also called Bartlett window Hamming 1 30 41 9 6 also called raised sine squared used in speech analysis Hann 1 20 to 1 86 23 to 47 12 to 30 also called sine squared used for audio amp vibration Blackman Harris 1 90 92 6 general purpose Flat top 2 94 44 6 negligible pass band ripple used mainly for calibration Rectangular 0 89 13 2 6 no fading maximal sharpness used for short transients psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 185 9 4 Trigger timing part 1 The pre trigger time control and post trigger delay control functions are described individually under Triggering toolbar but the interaction between the two controls is also important to understand Here is a screen shot of a scope view with post trigger delay
90. cope Yiew 0 667 1 3334 25 2 EH ET ms EI Trigger auto C E a a 7 782 E 50 Tools gt Math Channels command Click this to open the Math Channels dialog shown at top right in the picture above 2 Math Channels dialog This lists all the available math channels In the example 3 above only the built in functions are listed Math channel Once enabled a math channel appears in the selected scope or spectrum view You can change its scale and offset as with any other channel In the example above the new math channel bottom is defined as A B the difference between input channels A top and B middle You may occasionally see a flashing warning symbol j at the bottom of the math channel axis This means that the channel cannot be displayed because an input source is missing For example this occurs if you enable the A B function while channel B is set to Off psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 33 5 24 Reference waveforms A reference waveform is a stored version of an input signal You can create one by right clicking on the view selecting the Reference Waveforms command and selecting which channel to copy It can be displayed in a scope or spectrum view in the Same way as an input signal and like an input signal it has its own measurement axis scaling and offset button and color The reference wavef
91. ctual number of waveforms stored depends on the available memory and the number of samples in each waveform Collection Time Units Change the mode of the Timebase control in the Capture Setup toolbar Times per division the Timebase control displays time units per division for example 5 ns div Most laboratory oscilloscopes display timebase settings in this way Total collection time the Timebase control displays time units for the entire width of the scope view for example 50 ns Measurement Statistics Capture Size the number of successive captures that PicoScope uses to calculate the statistics in the Measurements Table A larger number produces more accurate statistics but causes them to be updated less frequently Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 100 Menus 6 5 8 2 Power management page Location Tools gt Preferences gt Power Management Purpose controls features of the oscilloscope that affect its power consumption Power Management Select the power mode to configure Mains Capture Rate Battery Reduce the number of waveforms per second that the scope will capture to extend battery life or allow other applications to run Faster Unlimited Current power mode Mains Capture Rate This control limits the speed at which PicoScope captures data from the scope device The other PicoScope settings the type of scope device and
92. d spot Motes Vehicle recently given 40 000 mile service KE Ee SLIME oO Cancel Details dialog showing vehicle information Customer information not shown can also be entered All of this information will be saved in the PicoScope data file It can then be viewed in PicoScope using the Edit gt Details menu command Additionally the Notes and Channel Labels can be displayed at the bottom of the PicoScope window by clicking the Notes and Channel Labels buttons in the lower toolbar psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 51 6 3 Views menu Dom Fe Add View Sub View Rename View Close View Channels X Axis Grid Layout Arrange Grid Layout Reset View Sizes Move View To Arrange Views Auto arrange axes Reset View Layout View Properties Reference Waveforms Masks Add Measurement Edit Measurement Delete Measurement Rename View Close View Channels X Axis 3 Location Menu bar gt Views or right click on a view Purpose controls the layout of the current view which is a rectangular area of the PicoScope window that display scope spectrum or other kinds of data The contents of the Views menu may vary depending on where you click and how many views are open If the current view contains a Measurements table a combined Measurements menu and Views menu will app
93. delay 185 arrow 18 control 149 185 Power Management preferences 100 Power supply 203 Preferences 57 capture rate 100 colours 105 Default Print Settings 104 device selection 107 dialog 98 general 99 keyboard 102 language 103 persistence modes 107 power management 100 sampling 101 spectrum modes 107 updates 108 Pre trigger delay 185 control 149 185 Printing 39 from command line 199 from menu 39 preferences 104 psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 213 Printing 39 preview 39 Probe 205 custom 31 ID dialog 70 Output Units dialog 61 Progress bar 132 Progressive mode 205 Properties sheet 30 displaying 51 Pulse width trigger 151 152 PWM output PicoLog 1000 Series 126 USB DrDAQ 129 R Range control 116 Range Management dialog 64 Rapid triggering 149 198 Reference waveforms 57 adding 51 delay 120 dialog 83 Library 83 Loaded 83 overview 33 using in equations 76 Reset Don t show this again dialogs 99 Resolution control 130 Resolution enhancement 117 118 205 Revolutions per minute 28 RGB LED on USB DrDAQ 128 Rise time threshold 55 Rising edge button 149 Rotation rulers 25 partition 27 units 27 wrap 2 7 RPM 28 107 RS232 UART protocol 188 Rulers 12 17 19 115 definition 205 deleting 23 24 handles 12 17 19 legend 28 lock button 28 phase 25 rotation 25 settings 27 time 12 19 voltage 12 17 1
94. display in any units and have either linear or nonlinear characteristics Custom probe definitions are particularly useful when you wish to display the probe s output in units other than volts or to apply linear or nonlinear corrections to the data Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 32 PicoScope and oscilloscope primer 5 23 Math channels A math channel is a mathematical function of one or more input signals It can be displayed in a scope XY or spectrum view in the same way as an input signal and like an input signal it has its own measurement axis scaling and offset button and color PicoScope 6 has a set of built in math functions for the most important functions such as Invert A A B and A B You can also define your own functions using the equation editor or load predefined math channels from files Here is a three step guide to using math channels 1 1 Select Tools gt Math Channels 2 Tick the check box to enable the Math channel in the channel list File Edit Views Measurements Tools Help As Me du A fh soousiaiv v x1 EJE os 6 Maths Channels Ag Auto m l oc x By 1 x oc x Ady DEKY Select a Maths Cannel 1 0 V 0 0 0 667 1 0 Import Explain what Built in Library and Loaded t i Maths Channels are Expor Fi F JS o 3 The Math Channel appears in the S
95. dows Print dialog which allows you to choose a printer set printing options and then print the selected view Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 40 Menus 6 1 1 Recent Files A list of recently opened or saved files This list is compiled automatically but you can clear it using the Files page of the Preferences dialog Exit Close PicoScope without saving any data Save As dialog Location File gt Save All Waveforms As or Save Current Waveform As Purpose allows you to save your waveforms and settings including custom probes and active math channels to a file in various formats PicoScope Automotive only the Details dialog appears before the Save As dialog to allow you to record details of the vehicle and the customer Wy Save As Save in My Desktop r Libraries Recent Places i Computer ci Network 20130128 0001 psdata J Je m J J di d di iiy L a File name 0130128 0002 psdata Save as type Data files psdata Only save zoomed region s U Saving a file of approx Size 1 MB Type your chosen file name in the File name box and then select a file format in the Save as type box You can save data in the following formats Data files psdata Stores waveforms and settings from the current scope device Can be opened on any computer running PicoScope Settings files pssettings Stores all settings but not waveforms from
96. drawing mode in which you can draw any waveform shape using the mouse F Straight line drawing Enters straight line mode in which you can click on the waveform to draw a straight line from the previous point To start a new series of lines click the button again Samples 1024 H Samples The number of samples in the arbitrary E waveform Each sample represents the signal value at a given instant in time and the samples are equally spaced in time For example if there are 1024 samples and the arbitrary waveform generator is set to play back at 1 kHz then each sample represents 1 1 kHz 1024 or about 0 98 microseconds Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 144 Toolbars and buttons TL Bit stream Draws a sequence of bits according to binary or hex data that you specify The logic high and low levels are adjustable gt Clear Deletes the arbitrary waveform AN Normalize Adjusts the waveform vertically so that it occupies the full 1 1 range Wp ga Undo and Redo The Undo button reverses the last change made to the arbitrary waveform The Redo button reverses the last action of the Undo button O eL Zoom tools To zoom the time axis in or out click the or z00m button and then click on the waveform area Click the 100 button to restore the time axis to its Original scale Waveform settings nl yl Av LL Standard waveform shapes Draw a standard waveform with t
97. e Signal levels on a scope XY or spectrum view Ruler legend Close button 10 Ruler Vl eig omv 612 0 mv 204 0 mi drag handle 0 6 Signal 0 4 _ deals 0 2 oo _ Signal rulers wll 2 0 4 0 6 2 011 0 a ee owe y 1 05 0 5 04 03 02 01 O00 01 OF z 4 mz Ruler tool tip In the scope view above the two colored squares to the left of the vertical axis are the ruler drag handles for channel A Drag one of these downwards from its resting position in the top left corner and a signal ruler a horizontal dashed line will extend from it Whenever one or more signal rulers is in use the ruler legend appears This is a table showing all of the signal ruler values If you close the ruler legend using the Close button all the rulers are deleted Signal rulers also work in spectrum and XY views Ruler tool tip If you move the mouse pointer over one of the rulers PicoScope displays a tool tip with the ruler number and the signal level of the ruler You can see an example of this in the picture above Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 24 PicoScope and oscilloscope primer 5 16 Time rulers The time rulers measure time on a scope view or frequency on a spectrum view Ruler legend O 148 0 ps 343 0 ps 0 6 0 4 i Fuler tool tip 0 0 y2 Time 0 4 ruler 0 0 8 40 Ruler 0 5 04 O3 02 04 0 l 2 03 handle a Frequency legend
98. e When you first open PicoScope it contains one scope view but you can add more views by clicking Add view in the Views menu The screen shot below shows all the main features of the PicoScope window Click on the underlined labels for more information PicoScope Views window menu Hy PicoScope 6 File Edit Views Measurements Jools Help Rename View Spectrum p 7 Ad View s Scope view 1 Scope 4 Close View XY 1 5 Channels j X Axis Scope view 3 hidden Grid Layout ee Arrange Grid Layout Scope view 2 x10 ms Move View To j heasurements table Ms Auto arrange axes Reset View Layout Trigger Auto B E View Properties Ed Reference Waveforms Add Measurement legend To arrange the views within the PicoScope window If the PicoScope window contains more than one view PicoScope arranges them ina grid This is arranged automatically but you can customize it if you wish Each rectangular space in the grid is called a viewport You can move a view to a different viewport by dragging its name tab show me but you cannot move it outside the PicoScope window You can also put more than one view in a viewport by dragging a view and dropping it on top of another For further options right click on a view to obtain the View menu or select View from the Menu bar then select one of the menu options to arrange the views Copyright 2007 2014 Pico Technology Ltd All rights reserved
99. e such an event may appear on the display for a fraction of a second too quickly for you to press the space bar to freeze it on the screen Persistence mode keeps the event on the display for a predetermined time allowing you to set up the trigger options to capture it more reliably Step by step guide Set up the scope to trigger on a repetitive waveform like the one below We suspect that there are occasional glitches but we can see nothing wrong yet so we shall use persistence mode to investigate Click the Persistence Mode button to continue Persistence Mode button Views Measurements Tools F f 20usidiv x1 ams G ee DC off Heslo Slas GA Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 How to 168 Immediately we can see three pulses with different shapes At this point we have the Saturation control in Persistence Options turned up to maximum to help us Our original scope view is replaced by a persistence view as shown below spot the various waveforms easily PicoScope 6 al x 1 k Pas L alu z gt 20 nsjdiv Properties se I I I I I I I I T I I I I I I I I I I I I I I i I I I I I I I l I I I I I I I I T I I I I I I I T I I I I I I I I I I I I I I L ee ee bs mre i m d _ L LlLlu lnn e de m My a Gu te E a a a S ee O eee
100. e a Custom Probe to apply scaling to the raw data A Custom Probe may change the scale and position of data on the graph but it has a few important differences from the other scaling methods Custom Probe scaling is a permanent transformation The scaling is applied when the waveform is captured and cannot be changed afterwards The actual data values themselves are changed so the graph axes may no longer display the original voltage range of the device Custom Probe scaling can be nonlinear and so may alter the shape of the signal Custom Probes are useful when you want to represent the characteristics of a physical probe or transducer that you plug into your scope device All of the zooming scrolling scaling and offset tools still apply to data that has been scaled with a Custom Probe in exactly the same way that they would apply to the raw data Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 166 How to 8 6 How to set up the spectrum view Creating a spectrum view First ensure that the trigger mode is not set to ETS as it is not possible to open a spectrum view in ETS trigger mode There are three ways to open a spectrum view Click the Spectrum Mode button in the Capture Setup toolbar We recommend using this method to get the best spectrum analysis performance from your scope Once in Spectrum Mode you can still open a scope view to see your data in the time domain but PicoScope opti
101. e data file Select Convert gt All waveforms gt psdata A PicoScope icon y will appear in the Windows notification area while the conversion is in progress PicoScope will ask you to confirm that you wish to overwrite the psdata file with a new version Click Yes Wait for Windows Explorer to update the display Repeat for all psdata files psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 113 The psdata files should now appear as in this picture L gt Computer H GO gt com Organize Burn New folder qir Favorites ME Desktop mi Downloads 5 Recent Places AMAL CAN Demoal Opens with 4424 pedata oy Libraries Documents a Music Pictures Videos r 4 items Offline status Online 4 i Offline availability Not available Converting to other formats t Waveforms doctemp Le TEL PC Sample psdat 1000 sine a waves pedata CAN Sample Wavetorm psdata For all of these conversions you can choose either All waveforms or Current waveform A psdata file can contain either a single waveform or the entire contents of the waveform buffer which can hold a number of waveforms from successive trigger events If the psdata file contains more than one waveform then you can choose to convert all of them or just the one that was last viewed in PicoScope Right click a PicoScope data file To convert a
102. e data table are as follows Column Description No Serial number of the packet decimal If Accumulate mode is off this counts from the start of the selected waveform If Accumulate mode is on this counts from the start of the first waveform in the waveform buffer Packet The type of packet TSS Transmission Start Signal Bit O of the frame FSS Frame Start Signal Bit 1 of the frame BSS Byte Start Signal A fixed 2 bit code Reserved Bit Not used Payload Preamble Indicator Indicates the presence of a network management vector or message ID Null Frame Indicator Indicates that the payload contains no useful payload data Sync Frame Indicator Indicates whether the frame is a synchronization frame Frame ID Defines the slot in which the frame is transmitted Payload Length The number of payload bytes divided by 2 Header CRC Cyclic redundancy check of data from the sync frame indicator to the payload length Cycle Count The value of the cycle counter Payload O to 254 bytes of data psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 197 Payload CRC FES DTS Error Start Time End Time Packet Time Min Voltage Max Voltage Voltage Delta CRC for the frame Frame End Signal Dynamic Trailing Sequence Indicates whether an error was detected Time according to PicoScope timebase at start of frame Time according to PicoScope timebase at end o
103. e in this picture several times in one cycle If we zoom in on the highlighted parts of the signal we will see how hysteresis can help Sat a Bor mi 7 mi 220 2 2270 2 161 4 161 4 102 6 23 8 3 971 3 0535 20 68 35 5 50 33 183 0 197 8 2127 227 5 242 3 2571 Noisy signal with hysteresis threshold In these zoomed in views the original threshold is the lower red line The upper red line is the second threshold used by the hysteresis trigger The signal rises across the lower threshold at 1 and 2 arming the trigger but not firing it At 3 the signal finally crosses the upper threshold firing the trigger On the falling edge of the signal at 4 and 5 rising edges of noise pulses cause the signal to cross the upper and lower thresholds but in the wrong order so the trigger is not armed and does not fire Thus the trigger occurs at only one well defined point in the cycle 3 despite the noise on the signal Hysteresis is enabled by default for all the advanced trigger types The Hysteresis controls in the Advanced triggering dialog let you change the hysteresis voltage as a percentage of full scale The trigger marker shows the size of the hysteresis window psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 155 7 11 2 2 Digital trigger dialog Location EE Advanced triggering dialog gt Digital and Logic buttons Purpose sets up triggering
104. e used together as shown above the ruler legend displays the positions of the time rulers in phase units as well as time units If two time rulers are positioned the legend also shows the phase difference between them Closing the ruler legend dismisses all rulers including the phase rulers Ruler options Options for the phase rotation rulers are configured by the Ruler Settings dialog which is called up by the Rulers button on the Advanced Options toolbar psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 27 5 18 Ruler settings Location Advanced Options toolbar gt Rulers The Ruler Settings box allows you to control the behavior of the time rulers and phase rulers called rotation rulers in PicoScope Automotive Ruler Settings Phase Ruler Phase Wrap Phase Partition 1 Units Degrees Percent O Custom C Ruler Settings in PicoScope Phase Rotation Wrap Phase Rotation Partition Ruler Settings Rotation Ruler Rotation Wrap Rotation Partition 1 Units Degrees Percent 6 Custom Ruler Settings in PicoScope Automotive If this box is checked time ruler values outside the range set by the phase rotation rulers are wrapped back into that range For example if the phase rotation rulers are set to 0 and 360 the value of a time ruler just to the right of the 360 phase rotation ruler wi
105. eae eee ee eee ee m oe ee ee eee eee fee ee i J I Pr a a aa a aa a aa a a a a aa a a a aa I I I hee ee eee eee ee m e e e e i e e e e a m e e e e e hb e e e e e e e l e a a o a U a BS 25 617 iam B Fans k Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 PicoScope 6 User s Guide 169 Now that we have found some glitches we will turn the Saturation control down to minimum Click the Persistence options button to open the Persistence Options dialog and then use the slider to adjust the saturation The display then appears as below The waveforms are now darker but have a wider range of colors and shades The most frequently occurring waveform is shown in red and is the normal shape of the pulse A second waveform is drawn in light blue to shows that it occurs less frequently and it shows us that there is an occasional jitter of about 10 ns in the pulse width The third waveform is drawn in dark blue because it occurs less frequently than the other two and indicates that there is an occasional runt pulse about 300 mV lower in amplitude than normal Persistence Options button aT PicoScope 6 File Edit Wists Tools Help ite X T E pig E 40 0 O tiger Auto s A E PES Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 170 How to Persistence mode has done its job We have found our gli
106. ear Add View Add a view of the selected type scope XY or spectrum In automatic grid layout mode the default PicoScope rearranges the grid to make room for the new view up to a limit of four views Any further views will be added as tabs in existing viewports If you have selected a fixed grid layout PicoScope will not change it Sub View Mixed signal oscilloscopes only Switch the analog view and digital view on and off independently Change the standard Scope or Spectrum label to a title of your choice Remove a view from the PicoScope window In automatic grid layout mode the default PicoScope rearranges the grid to make the best use of the remaining space In fixed grid layout mode if you have selected a grid fixed layout PicoScope will not change the grid Select which channels are visible in the current view Each view when created shows all the input channels but you can switch them on and off using this command Only the input channels that are enabled not set to Off in the Channel Setup Toolbar are available for viewing The Channels menu also list math channels and reference waveforms You can select up to 8 channels in any view Select any suitable channel to drive the X axis By default the X axis represents time If you select an input channel instead the scope view will become an XY view that plots one input against another A quicker way to create an XY view is to
107. eatures Persistence Digital Color Analog Intensity and custom persistence display modes Zoom Overview A window that appears when you zoom in to help to move around large waveforms with the minimum of mouse clicks RPM Revolutions per minute displayed alongside hertz in the frequency legend Trigger Delay The time delay control in the Triggering toolbar Rapid Trigger The Rapid entry in the Trigger mode control in the Triggering toolbar Move Trigger toolbar to top The toolbar containing the Start Stop Triggering Measurements and Rulers controls is at the bottom of the PicoScope window by default This option moves it to the top Recent Files The maximum number of files listed in the File gt Recent Files menu Click the button to clear the list Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 108 Menus 6 5 8 9 Updates page Location Tools gt Preferences gt Updates Purpose configures the automatic update checker and related services Updates Automatic Updates Software updates are free and contain new features performance improvements and bug fixes Please choose if you would like to be notified when updates become available Don t check for updates Notify me when updates are available Also notify me about pre release beta versions Reset Don t prompt me again for these versions Usage Statistics Help improve PicoScope 6 by submi
108. ecause the trace is slowly rotating although you cannot see that in this static picture Since an XY view has no time axis it tells us nothing about the absolute frequencies of the signals To measure frequency we need to open a Scope view How to create an XY view There are two ways to create an XY view Use the Add View gt XY command on the Views menu This adds a new XY view to the PicoScope window without altering the original scope or spectrum view or views It automatically chooses the two most suitable channels to place on the X and Y axes Optionally you can change the X axis channel assignment using the X Axis command see below Use the X Axis command on the Views menu This converts the current scope view into an XY view It maintains the existing Y axes and allows you to choose any available channel for the X axis With this method you can even assign a math channel or a reference waveform to the X axis Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 18 PicoScope and oscilloscope primer 5 9 5 10 Trigger marker The trigger marker shows the level and timing of the trigger point Trigger Trigger marker marker off screen indicator The height of the marker on the vertical axis shows the level at which the trigger is set and its position on the time axis shows the time at which it occurs You can move the trigger marker by dragging it with the mouse or for more accura
109. ectrum Bins to 16384 then PicoScope zero pads the waveform to 16 384 samples which is the nearest power of two above 10 000 It then uses these 16 384 samples to provide 8 192 frequency bins not the 16 384 requested If the source waveform contains more samples than required then PicoScope uses as many samples as necessary starting from the beginning of the waveform buffer For example if the source waveform contains 100 000 samples and you request 16 384 frequency bins PicoScope needs only 2 x 16 384 32 768 samples so it uses the first 32 768 samples from the waveform buffer and ignores the rest The amount of data actually used is displayed as the Time Gate setting in the Properties sheet Window Allows you to choose one of the standard window functions to Function reduce the effect of operating on a time limited waveform See Window functions Display You can choose Magnitude Average or Peak Hold Mode Magnitude the spectrum view shows the frequency spectrum of the last waveform captured whether live or stored in the waveform buffer psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 133 Average the spectrum view shows a rolling average of spectra calculated from all the waveforms in the waveform buffer This has the effect of reducing the noise visible in the spectrum view To clear the averaged data click Stop and then Start or change from Average mode to
110. eference waveforms Each one has a check box that controls whether or not the waveform appears on the display 5 Reference waveform Once enabled a reference waveform appears in the selected scope or spectrum view You can change its scale and offset as with any other channel In the example above the new reference waveform bottom is a copy of channel A 6 Axis control button Opens an axis scaling dialog allowing you to adjust scale offset and delay for this waveform Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 34 PicoScope and oscilloscope primer 5 25 Serial decoding You can use PicoScope to decode data from a serial bus such as I C or CAN Bus Unlike a conventional bus analyzer PicoScope lets you see the high resolution electrical waveform at the same time as the data The data is integrated into the scope view so there s no need to learn a new screen layout Serial Decoding command In Graph serial data Dg cuScope 6 TAC Sample pjata fo File Edit Views ents Tools Help EMIL ilu FE ims div w x1 Custom Probes Ag Auto Dc x By Aut gt Maths Channels Reference Waveforms B Preferences 5 0 1055 4 1117 3 1180 4 1242 9 Th 1430 15554 16179 Expot Accumulate View lt None gt Start from Filter Statistics Search Refresh Clear 3 Data Di Yes 1 755 ms 1 659 ms 1 91 ms 2 083 ms Decoding tab In Table serial data
111. el Any other channels will be specified later Select the protocol you wish to use Change the settings in the Protocol Settings panel if required Change further settings by clicking Advanced Settings if required Check the Enabled box for the channels that you want to decode Protocol Settings The options in this section depend on which protocol is selected Protocal Settings Advanced Settings Auto Setup Channel Threshold Threshold2 I O mA wmv FF 1iomv FF ck jm WM hy GAA hav BA ChipSel m C sv EA 16v EHF Controls _Advanced Settings Opens the Advanced Decoder Settings dialog for options that are rarely changed Baud Rate The symbol frequency in baud Choose one of the standard values from the drop down list type in an arbitrary value or click 7 to detect the baud rate automatically Channel The channel attached to the specified signal Configure this to match the connection of the inputs to the scope device psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 87 Threshold1 Threshold2 Signals I O Data or D Cik CLK or Clock Chip Sel Word Sel Display Settings Display Settings e I2C B Show Decoded Data For single threshold decoding the voltage that defines the transition in either direction between high and low logic states For dual threshold decoding the voltage that defines the transition f
112. eotenneedtee 9 2 How do capture Modes Work With Views aro rt isins rireieis insasi oekin Heni i NAASE SEER EER ERE TERR 10 A Pico Scope With OW arena a TE E A E ETT 11 D Scope view ianaSereca en aE ETE TE EN V EE E EE NE 12 6 Overvoltage indicator eisosa enia eE ach a r E E E e a a AEE 13 TM OVW EAA E A E NR 14 1 Digital P E E E E E ahnngcl satan tae cauneie ade di cvetonie dadanaesvececnas acted euseetes 15 2 Digital COPEEKE FIG EILL terest ee EE O 16 SV yi o a a E cated ata ehasaneteaeeatea 17 9 Teeger marker ia sepasactssa cies cog outs 0h ape tns E 18 AG P sttrigger Arrow lt sscisecesenspssccsstcseteceheseatasegarsesntedeetcanddaudsnanceudasssuswesyaesevantegened URUNE INNERE ERNIE ESEA EN NEA 18 11 Spectrum View siiiscirniisiinini ssnst eana EE EEKEREN EEEN EA E K 19 GBP MYT ory aoe Co ae oa E T T 20 13 M as rements Call Gs sse ceases celecs a E E E E E cusuaaseacsuaucnaased OE 21 MA Pointer tooltips corocrnec ona a E E E ues ss I EI E E OE 22 US Sinalar rere Sie AEEA EE PESEE En AE A AN 23 t Timerulers Joanina E O O E TES 24 17 Phase rotation rulers coreisasieai durui n E E RE S 25 AS Ruler settings Sisir inoren R NEART E EEN E O A T AN 27 19 R lerlesendi sorna a E R E 28 20 Frequency Epe nd Ann a A E E E RA E 28 21 Propertiesshegt secccssctccecespecctitiecerbaneteasiceaicestencheasieeancustenebent EAEE RERE EEKE EE REE VEEE ASEE CEEE RE 30 DP Custom probes rosor anna EEA TET NS 31 2 Maiehanna es erer AAE E T E
113. er or not a channel appears in the main PicoScope window click the appropriate check box and then OK You can have up to 8 channels in any view including input channels and math channels If you enable a 9th channel PicoScope opens a new view Built In these math channels are defined by PicoScope and cannot be changed Library these are the math channels that you define using the Create or Duplicate button Edit or load with the Import button Loaded these are the math channels present in any PicoScope settings or data files that you have loaded Create Opens the Math Channel Wizard which guides you through the process of creating or editing a math channel The new channel will appear under Library in the Math Channel list psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 73 Edit Delete Duplicate Import Export Opens the Math Channel Wizard to allow you to edit the selected math channel You must first select a channel in the Library section of the Math Channel list If the channel you want to edit is in the Built In or Loaded section first copy it to the Library section by clicking Duplicate then select it and click Edit Permanently deletes the selected math channel Only math channels in the Library section can be deleted Creates a copy of the selected math channel The copy is placed in the Library section from where you can edit it by clicking
114. er s Guide 161 8 2 How to use rulers to measure a signal Using a single ruler for signal to ground measurements Look at the Channels toolbar to find the color code for the channel you wish to measure Find the ruler handle the small colored square in the top left or top right corner of the scope view or spectrum view of this color E hal 100 Ls ici fl Drag the ruler handle downwards A signal ruler horizontal broken line will appear across the view Release the ruler handle when the ruler is where you want it Look at the ruler legend the small table that appears on the view It should have a row marked by a small colored square matching the color of your ruler handle The first column shows the signal level of the ruler 1 2 A seem Using two rulers for differential measurements Follow the steps above for using a single ruler Drag the second ruler handle of the same color downwards until its ruler is at the Signal level to be measured Look at the ruler legend again The second column now shows the signal level of the second ruler and the third column shows the difference between the two rulers 1 2 A z 126 Om 433 Omi 107g Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 162 How to 8 3 How to measure a time difference Find the time ruler handle the small white square in the bottom left corner of the scope vie
115. erminating character 0 is included in the Name length so if the variable name is TStart same as TStart 0 then the name length will be 7 The data block The data block begins with the name of the variable such as A Tinterval and you should read in the number of bytes described by the Name length part of the header not forgetting that the last byte in the string is 0 if your programming language needs to take account of this The remaining part of the data block is the actual data itself so read in the number of values described in the Number of values part of the header Remember to take account of the size of each value as described in the Data format part of the header Channel data such as voltages in variables such as A and B are stored as 32 bit single precision floating point data types Times such as Tstart Tinterval and T are stored as 64 bit double precision floating point data types Length is stored as a 32 bit integer Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 46 Menus Startup Settings menu Location File gt Startup Settings Purpose allows you to load save and restore the PicoScope 6 startup settings save Startup Settings Load Startup Settings Reset Startup Settings Save Startup Settings Saves your current settings ready for when you next select Load Startup Settings These settings are remembered from one s
116. ers or where appropriate a single cycle marked by one of the rulers Advanced Gives access to advanced measurement settings psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 55 6 4 2 Advanced measurement settings Location Add Measurement or Edit Measurement dialog gt Advanced Purpose adjusts parameters of certain measurements such as filtering and spectrum analysis l General Threshold Spectrum Span Spectrum Peak Span Threshold Some measurements such as Rise Time and Fall Time can be made using different thresholds Select the appropriate ones here When comparing rise and fall times with manufacturers specifications it is important to use the same thresholds for all measurements Spectrum Span When measuring peak related parameters such as Frequency at Peak in a spectrum view PicoScope can search for a peak near to the specified ruler location This option tells PicoScope how many frequency bins to search The default is 5 which tell PicoScope to search from 2 bins below to 2 bins above the ruler frequency giving a total range of 5 bins including the ruler frequency Pa Fiter Filter Control Control Cutoff Frequency 0 0 5 Filter Size Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 56 Menus Filter control Cutoff Frequency Filter Size PicoScope can low pass filte
117. es are supplied by Pico Technology and do not change unless you download an authorised update from us As a safeguard PicoScope does not allow you to edit or delete these probes If you want to modify one of them you can copy it to your library by clicking Duplicate and then edit the copy in your library Library probes These are the probes that you have created using any of the methods described in this topic You can edit delete or duplicate any of these probes by clicking the appropriate button in this dialog Loaded probes Probes in PicoScope data files osdata or settings files pssettings that you have opened appear here until you copy them to your library You cannot edit or delete these probes directly but you can click Duplicate to copy them to your library where you can edit them You can also import probes from the custom ranges stored in PicoScope 5 psd and pss files but these lack some of the features provided by PicoScope 6 See Upgrading from PicoScope 5 for more details psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 59 6 5 1 1 6 5 1 1 1 Adding a new probe to your library There are three ways to create a new probe 1 Use the Duplicate button as described above 2 Click New Probe to define a new probe 3 Click Import to load a probe definition from a psprobe file and add it to your library These files are normally supplied by Pic
118. ession of PicoScope 6 to the next Load Startup Settings Returns to the settings you created with the Save Startup Settings command Reset Startup Settings Deletes the startup settings you created with the Save Startup Settings command and restores the installation default settings psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 47 6 1 3 Waveform Library Browser Location File gt Waveform Library Browser PicoScope Automotive only Purpose allows you to search hundreds of user uploaded waveforms by entering various fields of required data Once found the waveform can be previewed opened or even its individual channels used as reference waveforms on your PicoScope screen q Search Options Vehicle details VIN ID Code Make Model A8 Generation Year lt YYYY YYYY gt Transmission Automatic 5 Test Conditions Engine details Engine Code Primary Fuel Petrol 5 Open Waveform 153 KB Secondary Fuel LPG 5 COP Coil on plug ignition secondary voltage 5 A T Car Details Load Status Good VIN ID Code WAUZZZ4E73N008253 Make Model Audi A8 Generation D3 Year 2003 Transmission Automatic Engine code BFM Primary fuel Petrol Secondary fuel LPG Cylinders 8 Configuration V Engine capacity 4 2 L ECU make model Bosch Motronic ME 7 1 1 Test conditions Key on Engine Running Idle Notes Secondary pickup on MV setting U
119. evice dialog which allows you to select the scope device you wish to use Open Allows you to select the file you want to open PicoScope can open psdata and psd files which contain both waveform data and scope device settings and pssettings and pss files which contain only scope device settings You can create your own files using the Save and Save As commands described below If the file was saved using a different scope device from the one that is presently connected PicoScope may need to modify the saved settings to suit the present device Hint Use the Page Up and Page Down keys to cycle through all the waveform files in the same directory Save Saves all waveforms using the filename shown in the title bar If you haven t entered a filename yet the Save As dialog opens to prompt you for one Save As Opens the Save As dialog which allows you to save the settings waveforms custom probes and math channels for all views in various formats Only the waveforms for the mode currently in use Scope Mode or Spectrum Mode will be saved In persistence mode this command is called Save Persistence As and Saves only the data for this mode Waveform Library Browser Accesses the Waveform Library Browser Startup Settings Opens the Startup Settings menu Print Preview Opens the Print Preview window which allows you to see how your workspace will be printed when you select the Print command Print Opens a standard Win
120. f frame The duration of the packet End Time Start Time Minimum voltage Maximum voltage Voltage range of the signal Max Voltage Min Voltage Display of these items is toggled on and off by the Statistics button Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 198 Reference 9 7 Device feature table Some PicoScope 6 features require special hardware and are therefore not available on all devices Feature availability is indicated in the table below Please see the relevant device data sheet for more details apc 212 J J J J J JJ J JS II usg DrDAQ Jv f J o J J f J Iiv Picologi000 J o f J o o f o f tJ l J PicoScope 2202 2203 f jf lJ ae zoa aas L n e ele PicoScope 2206 2208 v rn re SEE er PicoScope 2205A PicoScope 2206A PicoScope 2207A pceScePe 2208A PicoScope 2000 Mee L ne Picosenue 3206 CECE eee PICO SCOPE 3206 PicoScope 3000A B__ v v Picoseope 30008 He CEE EEE EEE EEE EL PicoScope 3000D MSO Picosepveaazsaana v e PicoScope 4423 4424 PicoScope 4225 4425 v v jviviv PicoScope 4226 4227 v ivi v jviviviv jv Picoscope 4262 fe fe jf pet jp te ff pe ete et PicoScope 4824 iv iv iv v picoscope 5000 I 1 1 Lee ed Oe ed PicoScope 5000A B_ iv iv jvivi v vyiviviviviv v PicoScope 6000 v v iv iviviv jviviviviviv Automo
121. file on every trigger event 8 Switch off the alarm when you have finished using it to avoid creating unwanted files Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 178 How to 8 10 How to create a link file A link file is used by the Serial Decoding In Table view to convert numerical data to text This is useful for displaying decoded packets in a human readable format 1 In the Tools gt Serial Decoding menu enable serial decoding and select the required serial protocol In this example we shall use I C Ensure that the In Table view is enabled 2 PicoScope will show the decoded data in numeric format Export Accumulate View Link None e Start from Filter Statistics Search Refresh 2 oo D Address T 6556ne 2071 ps 3 Dats oz o 5431 pe T501 p 4 Data 28 o 106 p 126 6 ps 5 Data Ad 0 157 6 ps 178 3 ps E B l2c 2 To create a link file begin by creating a blank template Click next to the Link label in the Serial Data Table toolbar Export Accumulate View tink None Startfrom Filter Statistics Search Refresh Clear Link a e A Save As dialog will appear Choose the Save As Type xlIs for Microsoft Excel format or csv for comma separated text format and then save the link file to a convenient place such as your Windows desktop 3 Open the link file with an appropriate text or spreadsheet editor and add number string
122. gital Setup dialog for channel selection and options Digital Setup dialog Location MSO button Purpose controls the digital inputs of an MSO mixed signal oscilloscope Select Digital Channels Groups Set Thresholds TL a L5 Available channels Note In a group the bottom channel is LSB SF gg i Cancel SSS S F Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 124 Toolbars and buttons Set Thresholds Choose the digital threshold voltage from the drop down list or select the Custom threshold and set your own voltage using the numeric entry control The preset thresholds are TTL 1 5 V Each port has its own CMOS 2 5 V independent threshold Port ECL 1 3 V 0 contains channels PECL 3 7 V D7 D0 and Port 1 contains LVPECL 2 V channels D15 D8 LVCMOS 1 5 V 750 mV LVCMOS 1 8 V 0 9 V LVCMOS 2 5 V 1 25 V LVCMOS 3 3 V 1 65 V LVDS 100 mV OV Differential OV Available Channels This section lists the available digital input channels They will not be displayed unless you add them to the Channels and Groups for Display section of the dialog Click and drag individual channels into the Channels and Groups for Display section or select a range of channels and drag them all at once or double click a channel to add it directly Channels and Groups for Display This section lists the digital channels that have been selected for display Any
123. groups of channels that you have defined will also be listed here um indicates a digital channel x indicates a group of digital channels By default channels added to a group are placed with the most significant bit at the top of the list To rename a channel or group click the name and type For other operations right click the channel or group for a menu of actions Enable Disable Invert Rename Reverse Channel Order Remove Enable Show the channel All channels in the list are enabled by default Disable Hide the channel from display Invert Reverse the polarity of this channel Useful for active low signals Rename Type a new name for the channel Reverse Channel Order Groups only Reverse the order of channels in the group Remove Remove channel from the list psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 125 1A PicoLog 1000 Series Channels toolbar The Channels toolbar controls the settings for each vertical input channel The toolbar has a different appearance for PicoLog 1000 Series Data Loggers than for PicoScope oscilloscopes see Channels toolbar for the standard version ena cha filcha ficha fel chs rl che Fllen lich Fiica fleni felen feh fechas felch 14 fcha r Ch 16 aE chi Channel control This control contains two buttons in one rectangular outline Click the small triangle on the left to open the Channel Optio
124. he txt format Copy Entire Window as Image This copies a picture of the PicoScope window to the clipboard It is provided as an alternative equivalent to pressing Alt PrtScn for users of laptops without a PrtScn key You can paste the picture into any application that can display pictures such as a word processor or desktop publishing program Notes Opens a Notes area at the bottom of the PicoScope window You can type or paste your own notes in this area Details PicoScope Automotive only Opens the Details dialog which allows you to enter or view vehicle details customer details Notes and Channel Labels 6 2 1 Notes Location Edit gt Notes Edit gt Details PicoScope Automotive only Advanced Options toolbar gt Notes button Purpose provides a text box for typing your own notes thy PicoScope 6 File Edit Views Measurements Tools Help saadad 1 05 25 20 15 10 05 00 05 10 15 20 25 AREEN THE Output of a Sinemaster Pro S N 314159 Trigger Auto it A sal a psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 49 A Notes area can be displayed at the bottom of the PicoScope window You can enter any text you wish in this area You can also copy text from another program and paste it here This text is included when you save the waveform as a file 6 2 2 Channel Labels PicoScope Automotive only Location Edit gt Details
125. he latest Windows NET q technology enabling us to deliver updates more quickly Custom probes manager to w make it easy for you to use your own probes and sensors with PicoScope Properties sheet displaying nin all settings at a glance Per channel lowpass filtering Reference waveforms for y storing copies of input channels Rapid trigger mode to ii capture a sequence of A iu waveforms with the minimum yn possible dead time Command line options for converting files Serial decoding for RS232 n I C and other formats in real time Buffer overview for searching a the waveform buffer Arbitrary Multiple views of the same data with individual zoom and pan settings for each view Advanced triggering conditions including pulse window and logic Spectrum mode with a fully optimized spectrum analyzer Math channels for creating mathematical functions of input channels Arbitrary waveform designer for oscilloscopes with a built in arbitrary waveform generator Windows Explorer integration to show files as pictures and convert to other formats Zoom overview for rapidly adjusting the zoom to show any part of the waveform Mask limit testing to show when a signal goes out of bounds Alarms to alert you when a specified event occurs psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 3 3 1 3 2 Introduction PicoScope
126. he settings specified in the numerical controls below the toolbar The current waveform will be erased Cycles 2 a Cycles The number of cycles to draw This control is used o in conjunction with the Standard waveform shapes buttons Select one of the standard waveform shapes and then enter the number of cycles and PicoScope will draw the requested number of cycles of the waveform Min 1 00 B Minimum When one of the Standard waveform shapes buttons is pressed this control sets the minimum signal level Max 0 99 H Maximum When one of the Standard waveform shapes buttons is pressed this control sets the maximum signal level Duty Cycle 50 Duty cycle When a square triangular or ramp waveform is selected using one of the Standard waveform shapes buttons this control sets the duty cycle of the signal Duty cycle is defined as the time that the signal spends above zero volts divided by the total cycle time Thus a symmetrical square or triangular wave has a duty cycle of 50 Reducing the duty cycle shortens the positive part of the cycle and lengthens the negative part and increasing the duty cycle does the opposite Other buttons OK Copies the waveform from the graphical editor into the arbitrary waveform generator and returns to the main PicoScope window Apply Copies the waveform from the graphical editor into the arbitrary waveform generator and remains in the Arbitrary Waveform Generator window psw en r3
127. headed USB cable Your scope will only operate at USE 2 0 speed The AC adapter supplied Use this if you do not have suitable USB ports available or if your PicoScope is m conected to a USB hub Operate your PicoScope from USB power Don t show this message again Ye No The power icons explained ss USB 3 0 port If this symbol appears you may power the scope from any USB 3 0 port using the USB 3 0 cable provided with your scope f USB charging port If this symbol appears you may power the scope from any USB port capable of supplying 1200 mA of current Dual USB port power If this symbol appears you may power the scope Te from any two powered USB ports using the dual headed USB 2 0 cable Supplied with your scope AC adapter Use the adapter supplied and plug it into the DC IN socket on your scope If you power the scope in this way the Power Options dialog will automatically close and the scope will start working immediately Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 204 Reference Insufficient USB power If insufficient USB power is available PicoScope displays this dialog More information on Power Options Insufficient Power Insufficient USB power is available to run your scope Please reconnect to one of the following sources SSA One USB 3 0 port using the Pico USB 3 0 cable lt f One USB charging port often marked with a symbol similar
128. horizontal 12 17 19 offset 164 scaling 120 164 vertical 12 17 19 Axis scaling 117 B Bandwidth limiter 117 198 Battery power 100 Beep 92 Binary files exporting 44 Bit stream 143 Bring channel to front 120 Buffer Navigation toolbar 136 Buffer Overview 37 C CAN bus protocol 191 Capture count 21 Capture modes 9 10 Capture rate preference 100 Capture Setup toolbar 130 Capture size preference 99 Changing device 160 Channel 205 selecting inaview 51 Channel Labels 49 115 Channel Options button 116 menu 11 7 Channel ordering 120 Channel settings in Properties sheet 30 Channel warning symbol 32 Channels toolbar PicoLog 1000 Series 125 Standard 116 USB DrDAQ 127 Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 210 Index Clipboard 48 Close file 39 Collection time units 99 Color preferences 105 Column auto width 53 Command line syntax 199 Connect Device dialog 39 111 ConnectDetect 115 Contact information 4 Converting data files 112 199 Copy asimage 48 astext 48 Copyright 3 Coupling control 116 Create New Custom Probe dialog 59 CSV files exporting 43 Cursors see Rulers 23 24 28 Custom grid layout dialog 52 Custom Probe Manager 57 Custom Probe wizard 59 Create New Custom Probe dialog 59 Edit Existing Custom Probe dialog 60 Edit Range dialog 66 Edit Range dialog Advanced tab 68 Finished dialog 71 Lookup table Scaling dialog 63 Manua
129. ht 2007 2014 Pico Technology Ltd All rights reserved psw en r37 98 Menus 6 5 8 Preferences dialog Location Tools gt Preferences Purpose Allows you to set options for the PicoScope software Click one of the tabs in the picture below to learn more a ae psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 99 6 5 8 1 General page Location Tools gt Preferences gt General Purpose contains general controls for PicoScope General Reset Don t show this again dialogs Reset preferences Seks the maximum number of waveforms that can be stored in the waveform buffer The actual number will depend on how many samples are collected in each waveform Maximum Waveforms 32 Collection Time Units Times per Division _ Total collection time Measurement Statistics Sets the number of captures over which measurements statistics are calculated Capture Size 2 1000 20 H Reset Don t show this again dialogs Restore any missing dialogs that you asked PicoScope not to show again Reset preferences Set all preferences back to their default values Waveform Buffer Maximum Waveforms This is the maximum number of waveforms that PicoScope will store in the waveform buffer You can select a number from 1 to the maximum allowed by the oscilloscope that is connected see the scope specifications for details The a
130. ice 500 ms div Slow Sampling Display Display previous Waveform Buffer Singx Interpolation On Specify sample threshold at which interpolation activates when operating at the fastest sample rate applicable only in scope mode 2000 Slow Sampling Transition In normal fast sampling mode PicoScope collects enough data to fill the screen and then redraws the whole view at once This method is suitable for fast timebases when the screen is redrawn many times each second but with slow timebases it can cause a unacceptable delay before the data appears on the screen To avoid this delay PicoScope automatically switches to slow sampling mode in which the scope trace advances gradually across the screen as the scope captures data The Collection Time control lets you select the timebase at which PicoScope switches to slow sampling mode Slow Sampling Display When this box is checked PicoScope displays the previous waveform in the buffer while gradually redrawing the new waveform over the top of it Thus at any time the left hand side of the view shows the beginning of the new waveform while the right hand side shows the end of the previous waveform A vertical bar separates the two waveforms Sin x x Interpolation When the number of pixels across the scope view is greater than the number of samples in the waveform buffer PicoScope interpolates that is it fills the space between the samples with estimated data It
131. iew if you selected scope mode or persistence mode or a spectrum view if you selected spectrum mode The rest of this section does not apply in persistence mode which allows only a single view Once PicoScope has shown you the first view you can if you wish add more scope or spectrum views regardless of the capture mode you are in You can add and remove as many extra views as you wish as long as one view remains that matches the capture mode Persistence mode Add second Add analog digital scope view spectrum view or both Pur nh aS TS A E Fe ee Be Lr A a Select Jad Per a ee ae ee ieee ne pet PicoScope capture as ii Paks ra mode mathageteenmaty a LE E Vareeeemetrmmemicrnennmel ilu Spectrum Add second Add mode spectrum view scope view i TREE E Examples showing how you might select the capture mode and open additional views in PicoScope Top persistence mode one view only Middle scope mode Bottom spectrum mode When using a secondary view type a spectrum view in scope mode or a scope view in spectrum mode you may see the data compressed horizontally rather than displayed neatly as in a primary view You can usually overcome this by using the zoom tools psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 11 5 4 PicoScope window The PicoScope window shows a block of data captured from the scope devic
132. ing For availability see the Device feature table Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 118 Toolbars and buttons Fedek Lowpass Filtering Lowpass Filtering An independent digital lowpass filter for each input channel with programmable 1 kHz 1000 cut off frequency This can be useful for removing B noise from your signal to make more accurate Activate Filtering measurements For availability see the Device feature table See nen Zero offset Digitally removes any offset from the input channel Before starting this operation remove any input signal from the selected channel and short circuit the input Click Zero to begin the adjustment Click Clear to restore the input to its uncorrected state zerg Resolution enhancement Resolution enhancement is a technique for increasing the effective vertical resolution of the scope at the expense of high frequency detail In some scope operating modes PicoScope may reduce the number of samples available to maintain display performance For this technique to work the signal must contain a very small amount of Gaussian noise but for many practical applications this is generally supplied by the scope itself and the noise inherent in normal signals The resolution enhancement feature uses a flat moving average filter This acts as a low pass filter with good step response characteristics and a very slow r
133. kHz B Sine 1 01 kHz k C Triangle 1 02kHz v D RampUp L 03kHz Click one of the channels to open the Demo Signals dialog which will allow you to set up a Signal from that channel psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 147 7 9 6 Demo Signals dialog Location start PicoScope with no scope device plugged in gt Connect Device dialog gt select DEMO device gt Signal Generator button aa gt select channel Purpose controls one channel of the demo signal source a feature of PicoScope that creates a variety of test signals to simulate a scope device Signal On Sine Frequency 1 kHz Amplitude soomv H Offset ov Signal On Tick this box to enable the demo signal source Sine Signal type Select from a list of standard signal types Arbitrary Arbitrary Waveform Open the Arbitrary Waveform Editor 1 kHz a ipsa Type your desired frequency in hertz or use the spin uttons S00 mv Amplitude Type your desired amplitude in volts or use the spin buttons oy B Offset Enter a number to add a d c offset to the demo signal By default the demo signals have a mean value of zero volts Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 148 Toolbars and buttons 7 10 Start Stop toolbar The Start Stop toolbar allows you to start and stop the scope device Click anywhere
134. l For example if the period is 1 ms and the duty cycle 25 then the signal will spend 25 of 1 ms 250 us of each cycle at the logic high level and the remaining 750 us at the logic low level The voltages of the logic high and low levels are specified in the User s Guide for the data logger but are typically O volts low and 3 3 volts high Using our example figures the average value of the PWM output will be 25 x 3 3 volts 0 825 volts Digital Outputs PicoLog PC Data Loggers have one or more digital outputs capable of driving low current loads High a E Each output can be set to a high or low logic level by moving the yll slider Lom gt psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 127 7 5 USB DrDAQ Channels toolbar The Channels toolbar for the USB DrDAQ controls the settings for each input and output channel fauna aB Tr Ecopefr orms eH femei CACARE E Sound a f Scope r Ohms pH f Temp Sound waveform sensor control The small arrow sets options for the sound waveform input measured in uncalibrated amplitude units using the on board microphone Click the channel name to toggle the channel on or off Sound level sensor control The small arrow sets options for the sound level input measured in decibels using the on board microphone Click the channel name to toggle the channel on or off Scope input control
135. l Ranges Setup dialog 65 Probe ID dialog 70 Probe Output Units dialog 61 Range Management dialog 64 Scaling Method dialog 62 Custom probes 31 dialog 58 saving 39 Data files converting 112 DC coupling 205 DC IN power 203 DC offset 117 198 Dead time 205 Decoding tab 34 Default Print Settings 104 Delay function 76 Demo device 146 Demo mode 146 147 205 Demo Signals dialog 147 menu 146 Details dialog channel labels 50 customer details 50 vehicle details 50 Device feature table 198 Device how to change 160 Digital color 134 Digital inputs 123 198 Digital Inputs button 116 123 Digital outputs 126 USB DrDAQ 129 Digital Setup dialog 123 Digital trigger dialog 155 Digital view 15 context menu 16 DrDAQ 127 Dropout trigger 152 E Edge trigger 152 Edit Existing Custom Probe dialog 60 Edit menu 48 Edit Range dialog 66 Advanced tab 68 Edit Reference Waveform dialog 84 Effective resolution 118 Email addresses 4 Equation dialog 76 Equivalent time sampling 149 ETS 149 205 and Advanced Triggering 151 Exit 39 Exporting data 43 binary format 44 text format 43 External EXT trigger 149 198 F Fall time threshold 55 Falling edge button 149 Fax number 4 Feedback 109 File conversion 112 File menu 39 Filter Method dialog 69 Filtering 117 channels 121 measurements 21 statistics 55 psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 211 Fit
136. l number of the packet decimal If Accumulate mode is off this counts from the start of the selected waveform If Accumulate mode is on this counts from the start of the first waveform in the waveform buffer Packet type all IS packets are of type Data Contents of data packets The signaling rate detected for this packet Time according to PicoScope timebase at start of frame Time according to PicoScope timebase at end of frame The duration of the packet End Time Start Time Minimum voltage Maximum voltage Voltage range of the signal Max Voltage Min Voltage Display of these items is toggled on and off by the Statistics button CAN protocol You can decode CAN Bus data using the serial decoding feature built into PicoScope Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 192 Reference The in window view of the data looks like this tart from Filter Statistics Search Acknowledge Start Time The columns in the data table are as follows Column No ID Frame RTR SRR IDE RO R1 DLC Data bytes Description Serial number of the frame decimal If Accumulate mode is off this counts from the start of the selected waveform If Accumulate mode is on this counts from the start of the first waveform in the waveform buffer Identifier hexadecimal Should be unique for a specified data type Base frames have an 11 bit identifier a
137. litude is 1 V and Offset is 0 V the output will have a negative peak of 0 5 V and a positive peak of 0 5 V Offset The mean value of the signal For example when Offset is O V a sine or square wave will have equal positive and negative peak voltages LH OV Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 142 Toolbars and buttons 173 Arbitrary waveform files Some PicoScope PC Oscilloscopes have an arbitrary waveform generator AWG which is enabled using the Signal Generator dialog PicoScope can program the AWG with a standard waveform such as a sine or square wave or an arbitrary waveform that you create or import from a text file A text file for PicoScope 6 is a list of decimal floating point values as in this example ine W 0 6 0 4 0 2 0 0 a 0 2 0 40 0 2 0 1 0 0 01 02 03 04 05 06 OF 08 mE C S OO CO O 0 01 O G O OQO O O O The file may have between 10 and 8 192 values as many it needs to define the waveform Each line may have more than one value in which case the values must be separated by tabs or commas The values are samples between 1 0 and 1 0 and must be equally spaced in time The output is scaled to the amplitude selected in the Signal Generator dialog and the selected offset is added if necessary For example if the signal generator amplitude is set to 1 V and the offset to 0 V then a sample value of 1 0 corresponds to an output
138. ll be 0 and the value of a time ruler just to the left of the 0 phase rotation ruler will be 359 If this box is unchecked ruler values are unconstrained Increasing this value above 1 causes the space between the two phase rotation rulers to be partitioned equally into the specified number of intervals The intervals are marked by broken lines between the phase rotation rulers The lines help you to interpret complex waveforms such as the vacuum pressure of a four stroke engine with its intake compression ignition and exhaust phases or a commutated AC waveform ina Switch mode power supply O04 02 z 02 04 0G G6 iem Phase rotation rulers with 4 partitions Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 28 PicoScope and oscilloscope primer 5 19 5 20 Units You can choose between Degrees Percent or Custom Custom allows you to enter your own unit symbol or name Ruler legend The ruler legend is a box that displays the positions of all the rulers you have placed on the view It appears automatically whenever you position a ruler on the view Ruler 1 Ruler Ruler values Values difference N A and Close Time or frequency ruler 0 16 3 ps 11 78 p5 521 ps buttons Signal rulers 226 0mv 423 0mv 649 0 mv T Bomy 403 0mv 475 0 mvj Lock button Editing You can adjust the position of a ruler by editing any value in the first two columns
139. ll waveforms in the file select Convert gt All waveforms or Convert gt Current waveform and then the file format that you require A PicoScope icon y will appear in the Windows notification area while the conversion is in progress Complex operations For more complex operations such as converting all files in a directory you can run PicoScope in a command window see Command line syntax Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 114 Toolbars and buttons Toolbars and buttons A toolbar is a collection of buttons and controls with related functions psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 115 7 1 7 2 Advanced Options toolbar The Advanced Options toolbar controls Phase or Rotation Rulers Notes and in PicoScope Automotive only Channel Labels Rulers EJ Notes EJ Channel Labels It contains the following buttons Rulers Opens the Ruler Settings dialog that controls the Phase rulers or in PicoScope Automotive Rotation rulers Notes Displays the Notes at the bottom of the window Channel Labels PicoScope Automotive only Displays the Channel Labels at the bottom of the window This toolbar normally resides at the bottom of the program window but can be moved to the top using the Tools gt Preferences gt Options gt Bottom toolbar at top control ConnectDetect A feature included on
140. lower threshold to the upper threshold Click the Advanced button in the Add Measurement or Edit Measurement dialog to specify the signal level thresholds for the measurement Rising Rate The rate at which the signal level rises in signal units per second Click the Advanced button in the Add Measurement or Edit Measurement dialog to specify the signal level thresholds for the measurement True RMS The root mean square RMS value of the waveform including the DC component Mask Failures A special measurement that counts the number of failed waveforms in Mask Limit Testing mode This measurement is added to the table automatically when you use Mask Limit Testing so there is usually no need to select it manually psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 181 9 1 2 Spectrum measurements To add a spectrum measurement open a spectrum view and then click the Add Measurement button You can use these measurements in either scope mode or spectrum mode Frequency at peak The frequency at which the peak signal value appears Amplitude at peak The amplitude of the peak signal value Average amplitude at peak The amplitude of the peak signal value averaged over a number of captures Total power The power of the whole signal captured in the spectrum view calculated by adding the powers in all of the spectrum bins Total Harmonic Distortion THD The ratio of
141. ls At other times you can leave a message on our support forum or send us an email psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 7 5 5 1 PicoScope and oscilloscope primer This chapter explains the fundamental concepts that you will need to know before working with the PicoScope software If you have used an oscilloscope before then most of these ideas will be familiar to you You can skip the Oscilloscope basics section and go straight to the PicoScope specific information If you are new to oscilloscopes please take a few minutes to read at least the Oscilloscope basics and PicoScope basics topics Oscilloscope basics An oscilloscope is a measuring instrument that displays a graph of voltage against time For example the picture below shows a typical display on an oscilloscope screen when a varying voltage is connected to one of its input channels a O C Oscilloscope displays are always read from left to right The voltage time characteristic of the signal is drawn as a line called the trace In this example the trace is blue and begins at point A If you look to the left of this point you will see the number 0 0 on the voltage axis which tells you that the voltage is 0 0 V volts If you look below point A you will see another number 0 0 this time on the time axis which tells you that the time is 0 0 ms milliseconds at this point At point B 0 25
142. lso appear in the dialog Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 152 Toolbars and buttons 7 11 2 Advanced trigger types The advanced trigger types can be switched on in the Advanced Triggering dialog For all trigger types except Digital the first step is to select which signal the scope Should use as the trigger so set Source to either A B Ext or AuxIO These names correspond to the BNC input connectors on the scope device Then choose one of the trigger types below LJ Simple Edge This type provides the same Rising and Falling edge triggers that are available from the Triggering toolbar It is included in this dialog as an alternative method of setting up the Simple Edge trigger You can set the trigger Threshold while in the advanced triggering dialog or alternatively you can drag the Trigger marker on the scope view This is the only trigger type that is compatible with ETS mode Advanced Edge This trigger type adds an extra Rising or Falling edge trigger and Hysteresis to the Simple Edge trigger The Rising or Falling option triggers on both edges of a waveform and is useful for monitoring pulses of both polarities at once Hysteresis is described in a separate topic Window This trigger type detects when the signal enters or leaves a specified voltage window The Direction control specifies whether the trigger should detect the signal entering the window leaving it
143. mal If Accumulate mode is off this counts from the start of the selected waveform If Accumulate mode is on this counts from the start of the first waveform in the waveform buffer Packet Packet type Start Stop Address Data or Unknown Address Shown for address packets Read Write Polarity of the Read Write flag Data bytes Contents of data packets Acknowledge Whether the destination acknowledged the packet Baud Rate The signaling rate detected for this packet Start Time Time according to PicoScope timebase at start of frame End Time Time according to PicoScope timebase at end of frame Packet Time The duration of the packet End Time Start Time Min Voltage Minimum voltage Max Voltage Maximum voltage Voltage Delta Voltage range of the signal Max Voltage Min Voltage Display of these items is toggled on and off by the Statistics button psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 191 9 6 4 9 6 5 I2S protocol You can decode I S Bus data using the serial decoding feature built into PicoScope The in window view of the data looks like this 1 z 3 4 a 6 T 8 3 Sm SF Q m m G G E A 25 Data BETA Refresh Clear The columns in the data table are as follows Column No Packet Data bytes Baud Rate Start Time End Time Packet Time Min Voltage Max Voltage Voltage Delta Description Seria
144. me Interval Increment Time Interval In sweep mode the generator increases or decreases the frequency by Frequency Increment each time this interval ends 7 9 1 3 Trigger controls The signal generator normally runs continually If you enable triggering the signal generator waits for a specified event before generating an output Triggers Active Trigger Source Scope se Type Rising Cycles Per Trigger 1 Threshold Manual Trigger Active Tick this box to enable signal generator triggering Trigger Source Specifies the signal that will be used to trigger the signal generator Scope The same trigger condition that triggers the scope Manual The Trigger Now button Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 140 Toolbars and buttons Ext Input The input marked EXT if fitted on the scope device An Alarm can also be made to trigger the signal generator This operation is configured in the Alarms dialog Type The condition that must be met by the trigger signal Rising The signal generator starts running when the trigger signal goes from low to high Falling The signal generator starts running when the trigger signal goes from high to low Gate High The signal generator runs whenever the trigger signal is high Gate Low The signal generator runs whenever the trigger signal is high Cycles per Trigger The number of cycles of the specified waveform to generate each
145. milliseconds later the voltage has risen to a positive peak of 0 8 volts At point C 0 75 milliseconds after the start the voltage has dropped to a negative peak of 0 8 volts After 1 millisecond the voltage has risen back to 0 0 volts and a new cycle is about to begin This type of signal is called a sine wave and is one of a limitless range of signal types that you will encounter Most oscilloscopes allow you to adjust the vertical and horizontal scales of the display The vertical scale is called the voltage range in this example at least although scales in other units such as milliamperes are possible The horizontal scale is called the timebase and is measured in units of time in this example thousandths of a second Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 8 PicoScope and oscilloscope primer 5 2 PC Oscilloscope basics A PC Oscilloscope is a measuring instrument that consists of a hardware scope device and an oscilloscope program running on a PC Oscilloscopes were originally stand alone instruments with no signal processing or measuring abilities and with storage only available as an expensive extra Later oscilloscopes began to use new digital technology to introduce more functions but they remained highly specialised and expensive instruments PC Oscilloscopes are the latest step in the evolution of oscilloscopes combining the measuring power of Pico Technology s scope devices with
146. mizes the settings for the spectrum view Go to the Views menu select Add view then select Spectrum File Edit Measurements Tools Help Scope Close View Grid Layout Arrange Grid Layout eset View Sizes Move View To d Arrange Views Reset View Layout This method opens a spectrum view in the currently selected mode whether this is Scope Mode or Spectrum Mode For best results we recommend that you switch to Spectrum Mode as described in the method immediately above Right click on any view select Add view then select Spectrum The menu is similar to the Views menu shown above Configuring the spectrum view See Spectrum Settings dialog Selecting the source data PicoScope can produce a spectrum view based on either live or stored data If PicoScope is running the Start button is pressed in the spectrum view represents live data Otherwise with PicoScope stopped the Stop button pressed in the view represents data stored in the currently selected page of the waveform buffer When PicoScope is stopped you can use the buffer controls to scroll through the buffer and the spectrum view will be recalculated from the waveform currently selected psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 167 8 7 How to find a glitch using persistence mode Persistence mode helps you find rare events hidden in otherwise repetitive waveforms In normal scope mod
147. nce mode the Capture Setup toolbar looks like this mu D ilu F ah sooustav x1 JEJE an Persistence Options Opens the Persistence Options dialog which controls several parameters affecting the way that PicoScope represents old and new data in persistence mode Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 132 Toolbars and buttons 7 6 1 Spectrum Options dialog This dialog appears when you click the Spectrum Options button in the Capture Setup toolbar It is available only when a spectrum view is open It contains controls that determine how PicoScope converts the source waveform in the current scope view to a spectrum view Spectrum Bins 16384 Window Function Blackman Display Mode Magnitude Scale Logarithmic D Linear Logarithmic unit dBu ok Apply cancel Spectrum The number of frequency bins into which the spectrum is Bins divided This control sets the maximum number of frequency bins which the software may or may not be able to provide depending on other settings The main constraint is that the number of bins cannot greatly exceed half the number of Samples in the source waveform If the source waveform contains fewer samples than required that is fewer than twice the number of frequency bins then PicoScope zero pads the waveform up to the next power of two For example if the scope view contains 10 000 samples and you set Sp
148. nd extended frames have a 29 bit identifier CAN Bus data is divided into frames each consisting of a number of bits A frame can be any of the following types Data contains data destined for a node Remote a request for the transmission of a specific identifier Error transmitted by a node that detects an error Overload inserted to add a delay between frames Interframe time interval preceding data frames and remote frames Any frame can also be a base frame or an extended frame Remote transmission request Used only in extended frames Identifier extension bit Reserved bit Reserved bit extended frames only Data length code Indicates the number of bytes of data The data content of the message DLC bytes long hexadecimal psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 193 CRC Sequence CRC Delimiter Ack Slot Ack Delimiter Error Stuffed Bits Baud Rate Start Time End Time Frame Time Min Voltage Max Voltage Voltage Delta A cyclic redundancy check of the data hexadecimal A fixed bit following the CRC Sequence field Node asserts this bit to acknowledge receipt A fixed bit following the Ack Slot field Set if PicoScope detects an error The number of extra bits inserted in the frame to assist synchronization Number of bits per second Value of PicoScope timebase at start of frame Value of PicoScope timebase at end of frame Du
149. ness for purpose 3 Flexible power 203 L Flexible Resolution 198 FlexRay Language preferences 103 protocol 196 LED Focus 205 on USB DrDAQ 128 Frequency counter 116 198 Legal statement 3 Frequency difference measuring 162 Liability 3 Frequency legend 24 28 LIN bus Frequency rulers 24 protocol 124 Functions mathematical 76 Line thicknesses 105 Link file 90 creating 178 Lissajous figures 17 General preferences 99 Logic trigger 152 Generate mask 94 dialog 156 Generate Mask dialog 96 Lookup Table Scaling dialog 63 Glitches finding 152 Lowpass filtering 69 118 121 198 Glossary 205 Graticule 12 17 19 205 M Grid 205 layout 51 52 Maro Groups digital input 123 ReCOUee G running from command line 199 H Mains power 100 Manual Ranges Setup dialog 65 Hand tool 158 Marquee Zoom tool 158 Harmonic control for measurements 55 Mask Limit Testing 35 57 Help menu 109 How To 171 Horizontal axis 12 17 19 Masks House current 100 colors 35 105 Hysteresis 154 displaying 51 editing 95 export 94 generate 94 I C import 94 protocol 190 in Buffer Overview 37 I S library dialog 94 protocol 191 saan OA IEPE inputs 116 polygons 95 Image savingas 40 selection dialog 35 Import from a Channel dialog 145 Mach Channel Wizard Input impedance 116 Equation dialog 76 Interpolation Finished dialog 82 linear 101 Introduction dialog 75 sin x x 101 Name and Color dialog 80 Interval trigger 151 152 overview 74 Invert button 32 Units and Range dialog 8
150. nished psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 75 6 5 2 1 1 Math Channel Wizard Introduction dialog Location Math Channels dialog gt Create if you have not ticked the Don t show me this introduction page again check box Purpose introduces the Math Channel Wizard Create a New Maths Channel This wizard will guide you through the process of creating a new Maths Channel Whatis a Maths Channel Don t show me this introduction page again Back cancel Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 76 Menus 655 25 2 Math Channel Wizard Equation dialog Location Math Channel Wizard Purpose allows you to enter or edit the equation for a math channel You can type directly into the equation box or click the calculator buttons and let the program insert the symbols for you A red error indicator will appear to the right of the equation box if the equation contains a syntax error Basic view tg Math Channel Wizard Enter the equation for this Maths Channel e o enced gt gt nc i in dnc nal Math Channel Wizard Equation dialog basic view Basic buttons Button Equation ce e ooo iis ES wa patio AD aT Jo Description Clear Equation Clears the entire contents of the equation box Clear Clears the single
151. ns dialog with options for probes resolution enhancement scaling and filtering Click the channel name to toggle the channel on or off Digital Outputs button For controlling the 2 or 4 digital outputs of the PicoLog 1000 Series device Opens the Digital Outputs dialog er Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 126 Toolbars and buttons 7 4 1 PicoLog 1000 Series Digital Outputs control JUL SOCAHON Digital Outputs button on the Channels toolbar Purpose controls the data logger s built in signal generator Digital Qut 4 PWM Period ims z i CL m in LH EH Digital Outputs dialog for the PicoLog 1216 The range of controls available depends on which model of data logger you have PWM Output PWM ife PWM The PWM output on some devices can be set to generate Off a pulse width modulated waveform This is a logic signal that is toggled with a specified period and duty cycle The average value of the signal is proportional to its duty cycle so it can be processed by an external low pass filter to produce a signal that iS proportional to the duty cycle Off Disable the PWM output PWM Enable the PWM output with the specified controllable Period and Duty Cycle 1 ms H Period Select the duration of one cycle of the PWM output 50 a Duty Cycle The percentage of the PWM signal period that the Signal spends at the logic high leve
152. nts a selection of measurements that PicoScope can calculate for the selected view Scope measurements AC RMS The root mean square RMS value of the waveform minus the DC Average It is equivalent to a ripple measurement Cycle Time PicoScope will attempt to find a repeated pattern in the waveform and measure the duration of one cycle DC Average The mean value of the waveform Duty Cycle The amount of time that a signal spends above its mean value expressed as a percentage of the signal period A duty cycle of 50 means that the high time is equal to the low time Falling Rate The rate at which the signal level falls in signal units per second Click the Advanced button in the Add Measurement or Edit Measurement dialog to specify the signal level thresholds for the measurement Frequency The number of cycles of the waveform per second Fall Time The time the signal takes to fall from the upper threshold to the lower threshold Click the Advanced button in the Add Measurement or Edit Measurement dialog to specify the signal level thresholds for the measurement High Pulse Width The amount of time that the signal spends above its mean value Low Pulse Width The amount of time that the signal spends below its mean value Maximum The highest level reached by the signal Minimum The lowest level reached by the signal Peak To Peak The difference between maximum and minimum Rise Time The time the signal takes to rise from the
153. o but you can also create your own by defining a new probe and then clicking Export Methods 2 and 3 open the Custom Probe Wizard to guide you through the probe definition process Custom Probe wizard Location Custom Probes dialog gt New Probe Purpose allows you to define custom probes and set up custom ranges The first dialog in the series is either the Create a new Custom Probe dialog or the Edit an existing Custom Probe dialog Create New Custom Probe dialog Location Custom Probes dialog gt New Probe Purpose introduces you to the process for creating a new custom probe iy Custom Probe Wizard Create a New Custom Probe This wizard will guide you through the process of creating a new Custom Probe het is a Custom Probe Don t show me this introduction page again How to use the dialog Click Next to continue to the Probe Output Units dialog Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 60 Menus 6 5 1 1 2 Edit Existing Custom Probe dialog Location Custom Probes dialog gt Edit Purpose introduces you to the process for editing an existing custom probe iy Custom Probe Wizard Edit an Easting Custom Probe This wizard allows you to change any aspect of the Custom Probe Press the Next button until you find the information you wish to edit lt Back How to use the dialog Click Next to continue to the Probe Output Units dialog where you can edit
154. o Technology Ltd All rights reserved psw en r37 64 Menus 6 5 1 1 5 Range Management dialog Location Scaling Method dialog gt Next Purpose allows you to override PicoScope s automatic range creation feature for custom probes In most cases the automatic procedure will be sufficient Hig Custom Probe Wizard Range Management Choose whether the ranges available on this probe will be managed automatically Each probe must have one or more ranges that refer to any of the input ranges on the scope the same input range can be referred to more than once Recommended Let the software manage my ranges for me automatically This will directly map as many Custom Probe Ranges to scope Input Ranges as possible This method has the advantages of giving your Custom Probe the best chance of being compatible with other scope hardware and also allowing auto ranging t M Enable auto ranging on this probe What is auto ranging C Advanced will manage the Custom Probe Ranges manually Use this option if you want to limit the number of ranges available to the user maybe because the physical probe you are using has a very specific function or if your ranges require specific fixed limits that may not map well to the scope s input ranges Help How to use the dialog If you select Let the software manage my ranges for me automatically then clicking Next will take you to the Custom Probe Identification dialog PicoScope s a
155. oScope 6 can export raw data in either text or binary format Text based file formats Easy to read without special tools Can be imported into standard spreadsheet applications Files are very large if there are many samples in the data so files are limited to about 1 million values per channel Text file format details Binary file format Files remain relatively small and can even be compressed in some situations this means that the amount of saved data is unlimited Either a special application is required to read the files or the user must write a program to read the data from the file If you need to save more than 64 K values per channel then you must use a binary file format such as the MATLAB MAT file format Binary file format details Data types for storing PicoScope 6 data Regardless of whether the data types were loaded from a binary file or from a text based file we recommend the following data formats for storing the values loaded from a PicoScope 6 data file Sampled data such as voltages should use 32 bit single precision floating point data types Times should use 64 bit double precision floating point data types Text formats Text format files exported by PicoScope 6 are encoded in UTF 8 format by default This is a popular format which is capable of representing a huge range of characters whilst still retaining some compatibility with the ASCII character set if only standard Western Eu
156. oding feature built into PicoScope The in window view of the data looks like this Start from Filter Statistics Search gt Refresh Clear Start Bit Data bytes Parity Bit Stop Bit The columns in the data table are as follows Column Description No Serial number of the packet decimal If Accumulate mode is off this counts from the start of the selected waveform If Accumulate mode is on this counts from the start of the first waveform in the waveform buffer Packet Packet type all packets in this format are classified as Data Start Bit If present this is the fixed 1 bit at the start of the word Data bytes Contents of data packets Parity Bit The error correction bit if present at the end of the word Stop Bit If present this is the fixed 1 bit at the end of the word Error Indicates whether there was a data error Start Time Time according to PicoScope timebase at start of frame End Time Time according to PicoScope timebase at end of frame Packet Time The duration of the packet End Time Start Time Min Voltage Minimum voltage Max Voltage Maximum voltage Voltage Delta Voltage range of the signal Max Voltage Min Voltage Display of these items is toggled on and off by the Statistics button psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 189 9 6 2 SPI protocol You can decode SPI Bus data using the serial de
157. of 1 0 V and a sample of 1 0 corresponds to an output of 1 0 V The file should contain exactly one cycle of the waveform which will then be played back at the speed specified in the Signal Generator dialog In the example above the signal generator was set to 1 kHz so one cycle of the waveform lasts for 1 ms There are 10 samples in the waveform so each sample lasts for 0 1 ms psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 143 7 92 4 Arbitrary Waveform Generator window Location Signal Generator dialog gt Arbitrary Purpose allows you to import edit draw and export arbitrary waveforms to load into your scope s arbitrary waveform generator You can also import and export the data in CSV format for use in other applications Po Arbitrary Waveform Generator E E MU Samples 1024 KS GF MNARKSL Cycles i Duty Cycle 1 VA NI E oK Cancel Apy Once the desired waveform appears in the window click OK or Apply to start using it Toolbar buttons Import from channel Opens the Import from Channel dialog which lets you copy a waveform from the scope into the arbitrary waveform window EA Import Displays an Open dialog to allow you to import an arbitrary waveform from a text file FA Export Displays a Save As dialog to allow you to save the arbitrary waveform as a text file Fi Freehand drawing Enters freehand
158. oll off from the pass band to the stop band Some side effects will be observed when using resolution enhancement These are normal and can be counteracted by reducing the amount of enhancement used increasing the number of samples captured or changing the timebase Trial and error is usually the best way to find the optimum resolution enhancement for your application The side effects include Widened and flattened impulses spikes Vertical edges such as those of square waves turned into straight line slopes Inversion of the signal sometimes making it look as if the trigger point is on the wrong edge gt A flat line when there are not enough samples in the waveform Procedure Click the Channel Options button w in the Channel Setup toolbar Use the Resolution Enhancement control in the Advanced Options menu to select the effective number of bits which can be equal to or greater than the vertical resolution of your scope device psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 119 Quantifying Resolution Enhancement The table below shows the size of the moving average filter for each resolution enhancement setting A bigger filter size requires a higher sampling rate to represent a given signal without significant side effects as detailed above Resolution Number of enhancement values e bits n 0 5 2 1 0 4 1 5 8 2 0 16 2 5 32 3 0 64 3 5
159. ology Ltd All rights reserved PicoScope 6 User s Guide 159 7 12 1 Zoom Overview Whenever you zoom in using the Zooming and Scrolling toolbar the Zoom Overview window should appear The Zoom Overview shows the full waveforms on all enabled channels The rectangle indicates the area that is visible in the current view You can move around the waveform by dragging the rectangle 7TH OIA DIA Hih ne oS OS ee rE You can also adjust the zoom factor by dragging the edges of the rectangle to resize it 7TH OIA DIA Oit OFF it biS i 1i 157 rE Minimize button reduce the Zoom Overview window in size without affecting the zoom settings Close button close the Zoom Overview window and return the zoom factor to 100 Note if the Zoom Overview does not appear the feature may have been switched off Check the Zoom Overview option in Tools gt Preferences gt Options Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 160 How to 8 How to This chapter explains how to perform some common tasks 8 1 How to change to a different device Unplug the old device Cancel the Check USB cable dialog Plug in the new device PicoScope will detect the new device and begin to use it If more than one device is connected PicoScope will ask you which one to use psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 Us
160. oom factor or the button to reset Samples control Sets the maximum number of samples that will be captured for each channel If this is larger than the number of pixels across the scope view you can zoom in to see more detail The actual number of samples captured is displayed on the Properties sheet and may be different from the number requested here depending on which timebase is selected and which scope device is in use To capture one waveform that occupies the entire buffer memory first set the Trigger Mode control to Single 1 MS LH 12 bits Hardware resolution Flexible Resolution Oscilloscopes only Sets the number of hardware bits used for sampling The range of options depends on the number of channels enabled and the sampling rate selected Automatic Resolution chooses the highest resolution compatible with the currently selected sampling rate and capture size Resolution can be further increased by software filtering see resolution enhancement Spectrum Mode In spectrum mode the Capture Setup toolbar looks like this Me u A toh r2smee le JEJE 125 MHz Spectrum Range control Sets the frequency range across the horizontal axis of the spectrum analyzer when the horizontal zoom control is set to x1 ily Spectrum Options Appears if a spectrum view is open regardless of whether scope mode or spectrum mode is selected It opens the Spectrum Options dialog Persistence Mode In persiste
161. orm may have fewer Samples than the original For more control over Reference Waveforms use the Reference Waveforms dialog as shown below 1 Select Tools gt wish to use as the reference m y PicoScope 6 File Edit Views Measurements Tools Help Bs ilu A Gh soous div v x1 Ag Auto Reference Wavefgrms 100ks 6 v pc Bg Auto v oc x Ay 3 Create a reference from the selected input channel Explain what Available Library and Loaded Reference Channels are f 4 Tick the check box to display the reference waveform 5 The new reference waveform appears in the Scope View shown here after scale offset and color adjustment 1 4 v mE 747 7 E 5 EAS gger Auto v A A 6 Each reference waveform has its own scale offset and delay adjustment dialog 1 Reference Waveforms button Click this to open the Reference Waveforms dialog shown on the right in the picture above 2 Reference Waveforms dialog This lists all the available input channels and reference waveforms In the example above input channels A and B are switched on so they appear in the Available section The Library section is empty to begin with _ Duplicate button When you select an input channel or reference waveform and click this button the selected item is copied to the Library section 4 Library section This shows all your r
162. ose No two applications are the same so Pico cannot guarantee that its equipment or software is suitable for a given application It is therefore the user s responsibility to ensure that the product is suitable for the user s application Mission critical applications Because the software runs on a computer that may be running other software products and may be subject to interference from these other products this license specifically excludes usage in mission critical applications for example life support systems Viruses This software was continuously monitored for viruses during production However the user is responsible for virus checking the software once it is installed Support No software is ever error free but if you are dissatisfied with the performance of this software please contact our technical support staff Upgrades We provide upgrades free of charge from our web site at www picotech com We reserve the right to charge for updates or replacements sent out on physical media Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 4 Introduction 3 3 Trade marks Windows is a registered trade mark of Microsoft Corporation Pico Technology PicoScope and PicoLog are internationally registered trade marks 3 4 Contact information Address Pico Technology James House Colmworth Business Park ST NEOTS Cambridgeshire PE19 8YP United Kingdom Phone 44 0 1480 396395 Fax 44 0 1
163. pairs appropriate to the target system Address Address Description Read Write Read Write Description Data bytes Data bytes Description Acknowledge Acknowledge Description oD ModeReg 02 Play 28 Stop A3 Pause In this example we have specified that the string ModeReg will appear in place of the value OD in the Address field and so on The numerical values are treated literally so if the View gt Display Format control in the data window is set to Hex the link file must contain the string 0D to match the hexadecimal value OD If the View gt Display Format control is changed to Decimal for example a new link file containing decimal values will be required 4 Save the link file 5 Click Browse next to the Link label in the Serial Data Table toolbar Peer Export Accumulate VIEW Link Start from Filter Statistics Search Refresh Clear Browse X 6 An Open dialog will appear Select the link file and click OK psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 179 7 PicoScope will now replace the numeric data with the text strings that you have defined Serial Decoding r at ey pe Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 180 Reference Reference This is where you can find detailed information on the operation of PicoScope Measurement types The Edit Measurement dialog prese
164. ploaded by picophil Home Log Out A Cylinders _ 8 5 HOW Configuration Capacity L Capacity cu in ECU Make ECU Model Channel details Add channel Select Label VJs C Remove Select Good Bad Unknown List view Open Waveform 1 85 MB O Grid view Ca r Details A COP Coil on plug ignition secondary voltage d Status Bad VIN ID Code WAUZZZ4E73N008253 Load Make Model Audi A8 Generation D3 Year 2003 Transmission Automatic Engine code BFM Primary fuel Petrol Secondary fuel LPG Cylinders 8 Configuration V Engine capacity 4 2 L ECU make model Bosch Motronic ME 7 1 1 Test conditions Key on Engine Running Idle Notes Secondary pickup on MV setting Uploaded by picophil Injector current Car Details Status Bad Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 48 Menus 6 2 Edit menu Location Menu bar gt Edit Purpose gives access to the clipboard related and note editing functions Copy as Image Copy as Text Copy Entire Window as Image Notes Details Copy as Image Copies the active view to the clipboard as a bitmap You can then paste the image into any application that accepts bitmap images Copy as Text Copies the data in the active view to the clipboard as text You can paste the data into a spreadsheet or other application The text format is the same as that used by the Save As dialog when you select t
165. psw en r37 138 Toolbars and buttons 1 9 7 9 1 7 9 1 1 Signal Generator button The Signal Generator button allows you to set up your scope device s test signal generator if it has one or the demo signal settings if PicoScope is in demo mode If your scope has a built in signal generator then clicking the Signal Generator button opens the Signal Generator dialog If PicoScope is in demo mode then clicking the Signal Generator button opens the Demo Signals menu Signal Generator dialog PicoScope devices Location Signal Generator button on the toolbar Purpose controls the scope device s built in signal generator Not all scope devices have a signal generator and those that do have a varying range of controls in the signal generator dialog See the Device feature table for details Basic controls Signal Generator Signal On Arbitrary Square Start Frequency 1 kHz Amplitude Li Offset TET Sweep Mode Triggers Signal On Tick this box to enable the signal generator Signal Type Select the type of signal to be generated The list of signal types depends on the capabilities of the scope device Import Opens a file selection dialog that allows you to import an arbitrary waveform file The file will be loaded into the arbitrary waveform generator and the generator switched on This button is available only if your scope has an arbitrary waveform generator Arbitrary Opens the
166. questions with fellow PicoScope users New software features are sometimes announced here before they make it into the User s Guide Send Feedback Send us suggestions for improving PicoScope Check for Updates Check online for later versions of PicoScope If you have both stable and beta versions installed this checks for updates to both of them You can configure the settings for automatic update checking under the Tools gt Preferences gt Updates menu About PicoScope 6 Displays useful information such as the model and serial numbers of your scope and software and driver version numbers Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 110 Menus 6 Automotive menu PicoScope Automotive only Location Menu bar gt Automotive Purpose gives access to a database of preset tests i aa ee Show Web Help When this box is checked Charging and Starting selecting a preset test also opens a web page Sensors d with instructions and technical information Actuator Clear this box to disable web help Ignition Communication Networks Advanced Tests b Pressure Sensors H Motorcycle Specific d Accessories Guide Show Web Help 1 Select a preset test 2 PicoScope opens the relevant information page that explains how to setup the test for the scope that is connected run the test and interpret the results a few tests do not have an information page 3 PicoScope display
167. r the statistics to produce more Stable and more accurate numbers Filtering is not available on all measurement types Enable Filter check to enable low pass filtering if available An F will appear after the measurement name in the measurements table Automatic check to set the low pass filter characteristics automatically The filter cut off frequency normalised to the measurement rate Range O to 0 5 The number of samples used to construct the filter Harmonic Detector Harmonic Control Highest Harmonic Search Range bins Harmonic Moise Floor dE Harmonic Control Highest Harmonic Search Range Harmonic Noise Floor These options apply to distortion measurements in spectrum views You can specify which harmonics PicoScope uses for these measurements The highest harmonic to include when calculating distortion power The number of frequency bins to search centred on the expected frequency when looking for a harmonic peak The level in dB above which signal peaks will be counted as harmonics psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 57 6 5 Tools menu Location Menu bar gt Tools Purpose gives access to assorted tools for signal analysis i Custom Probes gt Maths Channels 2 Reference Waveforms ami aerial Decoding Alarms FL Masks Hf Macro Recorder Preferences w Custom Pro
168. r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 83 6 5 3 Reference Waveforms dialog Location Purpose Tools gt Reference Waveforms enables you to create edit and control reference waveforms which are stored copies of input channels Reference Waveforms Select a Reference Channel Explain what Available Library and Loaded Reference Channels are Reference WE noise E ramp up Loaded z Feference Waveforms list The main area of the Reference Waveforms dialog is the Waveforms list Reference Waveforms list which shows all the available input Edit channels and the library and loaded reference waveforms To choose whether or not a waveform appears in the main PicoScope window click the appropriate check box and then OK You can have up to 8 channels in any view including input channels math channels and reference waveforms If you try to enable a 9th channel PicoScope will open another view Available these input channels are suitable as sources for reference waveforms Library these are the reference waveforms that you have defined using the Duplicate button or loaded with the Import button Loaded these are the reference waveforms present in any PicoScope settings or data files that you have loaded Opens the Edit Reference Waveform dialog to allow you to edit the selected reference waveform You must first select a waveform in
169. raticule rulers and waveforms in PNG format The image is 800 pixels wide by 600 pixels high in 16 million colors with lossless compression Stores the waveform data in MATLAB 4 format Stores the graticule rulers and waveforms in JPG format The image is 800 pixels wide by 600 pixels high in 16 million colors with lossy compression The first three options control what happens when the waveform buffer contains more than one waveform All waveform buffers Save all of the waveforms in the selected file format If the file format is PSDATA all of the waveforms are collected in a single file You can then load this into PicoScope and step through the waveforms using the buffer navigation controls If the selected file format does not support multiple waveforms PicoScope creates a new directory containing multiple files Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 42 Menus Current waveform buffer only Waveform buffers Only zoomed regions Save the single waveform that is currently on view Save the specified list or range of waveforms Each waveform is identified by its index number For example lee p oe 2 5 10 If the waveform is zoomed horizontally save only the visible portion psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 43 6 1 1 1 6 1 1 1 1 File formats for exported data Pic
170. ration of frame End Time Start Time Minimum voltage Maximum voltage Voltage range of the signal Max Voltage Min Voltage Display of these items is toggled on and off by the Statistics button Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 194 Reference 9 6 6 LIN protocol You can decode LIN data using the serial decoding feature built into PicoScope The in window view of the data looks like this E A LIN BETA The columns in the data table are as follows Column Description No Serial number of the frame decimal If Accumulate mode is off this counts from the start of the selected waveform If Accumulate mode is on this counts from the start of the first waveform in the waveform buffer Frame LIN Bus data is divided into frames each consisting of a number of bits A frame can be any of the following types Unconditional all subscribers must receive this frame Event triggered multiple slaves may respond to this but only if they have new data Sporadic transmitted by the master when it knows that the slave contains updated data Diagnostic contains diagnostic or configuration data User Defined depends on your application Reserved should not be used Break The start of frame notifier Sync A fixed value 0x55 used for automatic baud rate detection Frame ID A six bit value to identify the type of data carried by the fr
171. re For accurate results the signal must be perfectly repetitive and the trigger must be stable Floating inputs A feature of the PicoScope 4225 and 4425 oscilloscopes These are inputs that do not share a common measurement ground The channels are separated by high impedances and their measurement grounds can be connected to any voltage within the specification range It is important however that every input in use has both a signal and a ground connection Graticule The horizontal and vertical dashed lines in every view These help you estimate the amplitude and time or frequency of features on the waveform Grid The arrangement of viewports The number of grid rows and the number of grid columns can each be either 1 2 3 or 4 IEPE Integrated circuit piezoelectric A type of sensor usually built to detect acceleration vibration or sound and with a built in amplifier IEPE sensors can only be used with special PicoScope oscilloscopes that have IEPE compatible inputs Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 206 Reference In focus PicoScope can display several views but only one view is in focus at any time When you click a toolbar button it will usually affect only the view that is in focus To bring a view into focus click on it MSO Mixed signal oscilloscope An instrument that captures and displays analog and digital signals on the same timebase PC Data Logger A measuring
172. re input range Scaled range limits Min 47A FH Max 53A Scaled Range Input Range Automatic mode If you leave the Automatic radio button pressed the program will automatically determine the best hardware input range for the device as you change the Scaled range limits This is the best mode to use for almost all ranges You should set the Scaled range limits to the maximum and minimum values you wish to see on the vertical axis of the scope display Fixed range mode If you press the Hardware input range radio button and select a hardware input range from the drop down box PicoScope will then use that hardware input range whatever scaled range limits you choose Set the upper and lower scaled range limits to the limits you wish to appear at the top and bottom of the vertical axis in PicoScope s scope view What is an input range An input range is the signal range usually in volts on the input channel of the scope device Your scaled range should match this as closely as possible to make the most of the scope s resolution What is a scaled range The scaled range is the range that will appear on the vertical axis of the scope display when the probe is selected The scaling that you chose on the Scaling Method page defines the relationship between the input range and the scaled range This dialog enables you to set up ranges to display the scaled data on the scope view psw en r37 Copyright 2007
173. rid font size Sets the font size for the entries in the measurements table Column Auto width If this button is pressed the columns of the measurements table will continually adjust to fit the contents whenever the table changes Click again to release the button Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 54 Menus 6 4 1 Add Edit Measurement dialog Location Measurements toolbar gt Add Measurement or Edit Measurement button Views menu gt Add Measurement or Edit Measurement button Double click a measurement in the measurements table Purpose allows you to add a measurement of a waveform to the selected view or edit an existing measurement Edit Measurement Select the channel to measure BA Select the type of measurement AC RMS Choose which section of the graph will be measured Whole trace PicoScope automatically refreshes the measurement every time it updates the waveform If this is the first measurement for the view PicoScope will create a new measurements table to display the measurement otherwise it will add the new measurement to the bottom of the existing table Channel Which of the scope device s channels to measure Type PicoScope can calculate a wide range of measurements for waveforms See scope measurements for use with scope views or spectrum measurements for use with spectrum views Section Measure the whole trace just the section between rul
174. ries according to the type of oscilloscope connected The full list is as follows Sine Square Triangle RampUp RampDown SINC Gaussian HalfSine WhiteNoise PRBS DCVoltage Arbitrary ee Sinusoid Square wave Symmetrical triangle wave Rising sawtooth Falling sawtooth sin x x truncated on the x axis The bell curve of the normal distribution truncated on the x axis A rectified sinusoid Random samples at the maximum update rate of the AWG Pseudo random binary sequence a random sequence of bits with adjustable bit rate Constant voltage adjustable using the Offset control Any waveform created by the arbitrary waveform editor Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 184 Reference 9 3 Spectrum window functions To create a spectrum view PicoScope captures a block of sampled data over a finite time interval and then uses a Fast Fourier Transform to compute its spectrum The algorithm assumes a signal level of zero at all times outside the captured time interval Typically this assumption causes sharp transitions to zero at either end of the data and these transitions have an effect on the computed spectrum creating unwanted artefacts such as ripple and gain errors To reduce these artefacts the signal can be faded in and out at the start and end of the block There are several
175. rights reserved psw en r37 112 Menus 6 9 Converting files in Windows Explorer You can convert PicoScope data files to other formats for use in other applications or to different forms of data for use with PicoScope The easiest way to do this conversion is through the context menu in Windows Explorer The context menu is the menu that pops up when you right click it with the mouse or activate it with the menu button on a Windows keyboard When you install PicoScope a Convert entry is added to the context menu to enable you to convert PicoScope data files Our di t H Waveforms PSW Organize Ny Open Burn New folder Hr Favorites iA id re re ME Desktop 1 Open mi Downloads 7 2004 Print E Recent Places AE Came r Ca Libraries iaiia Documents Send to al Music Cut Pictures P E Videos iii 2 Create shortcut 2004_12_27_001_64 psdata Date r Delete PicoScope data file Rename a Properties The PicoScope context menu in Windows Explorer Converting to PicoScope 6 2 4 format The example above shows four pre existing PicoScope data files represented by Standard PicoScope icons PicoScope 6 2 4 introduced a new feature that allows PicoScope data files to appear as waveforms instead of icons To enable this feature for old data files you need to convert them to the new format using the context menu of Windows Explorer If PicoScope is running close it In Windows Explorer right click a PicoScop
176. rom low to high logic states To activate dual threshold decoding check the check box to the left of the Threshold2 control The voltage that defines the transition from high to low logic states Used only with dual threshold decoding To activate dual threshold decoding check the check box to the left of the Threshold2 control Data channel for various protocols Bit order number of bits and polarity are specified in Advanced Decoder Settings Note bidirectional SPI can be decoded as two separate buses one with Data In DI as the I O signal and the other with Data Out DO as the I O signal The Clk and Chip Sel if present can be shared by both buses Clock for various protocols The polarity is defined in Advanced Decoder Settings Chip Select for SPI protocol Polarity is defined in Advanced Decoder Settings If there is no Chip Select Signal clear the check box Word Select for IS protocol Indicates which stereo channel the data belongs to In Graph Hex In Table Hex Name Type a name to display on the scope view Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 88 Menus Hex Select the format for displaying decoded data Hexadecimal Binary ASCII or Decimal Information panel If the serial decoding parameters entered are incorrect this panel displays an error message If there is no error it states the minimum number of samples required for the selected seri
177. ropean characters and numbers are used in the file CSV comma separated values CSV files store data in the following format Time Channel A Channel B us V V 700 0U04 Seal Lezbo 500 002 4 724 2 130 500 gt Ded ar Asal There is a comma after each value on a line to represent a column of data and a carriage return at the end of the line to represent a new row of data The 1 million values per channel limit prevents excessively large files being created Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 44 Menus Note CSV files are not the best choice of format if you are working in a language that uses the comma character as the decimal point Instead try using the tab delimited format which works in almost the same way Tab delimited Tab delimited files store data in the following format Time Channel A Channel B us V V 500 004 5 511 1 25 500 002 4 724 2 130 500 52552 Dale The files have a tab character after each value on a line to represent a column of data and a carriage return at the end of the line to represent a new row of data These files work in any language and are a good choice for sharing data internationally The 1 million values per channel limit prevents excessively large files being created 6 1 1 1 2 Binary formats PicoScope 6 can export data in version 4 of the mat binary file format This is an open format and the full specification is freel
178. rtical axis Scopes with floating inputs only If the BNC shell to chassis voltage exceeds the measurement limit the Channel LED will turn solid red and the yellow warning icon H will appear in the upper corner of the PicoScope screen next to the relevant channel s vertical axis Parts of the waveform will also be missing when the measurement limit is exceeded Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 14 PicoScope and oscilloscope primer 5 MSO view Applicability mixed signal oscilloscopes MSOs only The MSO view shows mixed analog and digital data on the same timebase Digital Inputs button Ay PicoScope6 ee f fa File Edit Views Measurements Tools Help P TL al F f 200 usidiv v x1 EB 49 11 E RMA QQI9 4 Ag Auto v Dc m Sa oF Ba BEST a s 3 0 2 0 1 0 0 0 io Analog w view 3 0 4 0 Splitter i 0 8 0 6 0 4 0 2 0 0 0 2 0 4 0 6 0 8 PU EEE ms D7 ooo eee ee ee eee a E B S r a O G O Goo o oo o d o osL UUU UU U UU UAA AAA Annaan nanara nnan nannaa D4 AG lan anr e a TE TD a e nT D3 Digital D2 i view ot LE LE LP LPL Le Le Le LLL Le Le LLL LL LLL LLL me E a a S E E Q Trigger sne r 53 FAAS B Digital Inputs button Switches digital view on and off and opens the Digital Setup dialog Analog view Shows the analog channels The same as a standard scope view Digital view
179. s an example waveform 4 PicoScope configures itself with the necessary settings In most cases all you need to do is press the space bar to start the test psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 111 6 8 Connect Device dialog Location File gt Connect Device or plug in a new device Purpose when PicoScope finds more than one available scope device this dialog allows you to select which one to use Connect Device Select a device to use from the list below If you plug ina new device now it should appear in the list See How to change to a different device if you wish to switch to a different scope device later Procedure Wait for a list of devices to appear This may take a few seconds Select a device and click OK PicoScope will open a scope view for the selected scope device Use the toolbars to set up the device and the scope view to display your signals Demonstration mode If you start PicoScope with no device connected the Connect Device dialog automatically appears with a Demo demonstration device as one of the options This is a virtual device that you can use to experiment with the features of PicoScope If you select the Demo device and click OK PicoScope adds a Demo Signal Generator button to the toolbar Use this button to set up the test signals from your Demo device Copyright 2007 2014 Pico Technology Ltd All
180. s on the output Duty Cycle the percentage of the Period for which the output is high Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 130 Toolbars and buttons 7 6 Capture Setup toolbar The Capture Setup toolbar controls the time related or frequency related settings of your oscilloscope Scope Mode In scope mode the toolbar looks like this Aa u la F Ab Smsvav ej x1 Ej ims E 12bits B See below for different versions of the toolbar in spectrum mode and persistence mode Ry Scope Mode Sets up PicoScope to operate as an oscilloscope Use the Auto Setup button to optimise the settings If you wish you can add a secondary spectrum view from the context menu by right clicking on the scope view HL Persistence Mode Toggles persistence mode which allows old traces to remain on the screen in faded colors while new traces are drawn on top in brighter colors The use of colors is controlled by the Persistence Options dialog PicoScope will remember any views that were open so that you can return to them by clicking the Persistence Mode button again uli Spectrum Mode Sets up PicoScope to operate in spectrum analyzer mode Use the Auto Setup button to optimise the settings If you wish you can add a secondary scope view from the context menu by right clicking on the scope view F Auto Setup Searches for a signal on one of the enabled input channels then sets up the timeba
181. se and signal range to display the signal correctly A Home Restores PicoScope to its default settings Equivalent to the File gt Startup Settings gt Load Startup Settings command Timebase control Sets the time represented by a single division of the horizontal axis when the horizontal zoom control is set to x1 The timebases available depend on the type of scope device you are using and for some devices on the number and combination of channels enabled and the selected trigger mode 100 usidiw x Choosing a timebase equal to or longer than PicoScope s Slow Sampling Transition setting 200 ms div by default causes the scope to switch to a different mode of data transfer The internal details of this are taken care of by PicoScope but the slow mode limits the sampling rate to the streaming mode sampling rate specified in the scope device s data sheet The Slow Sampling Transition setting can be changed in the Tools gt Preferences gt Sampling dialog You can change this control to display the total time across the scope view rather than the time per division using the Collection Time Units control in the General page of the Preferences dialog psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 131 xi 5 Horizontal zoom control Zooms the view in the horizontal direction only by the specified amount Click the l and buttons to adjust the z
182. seenseesseeseneeeees 183 3 Spectrum window functions 1295 lt 6 lt ccece casse danona eiae A E Ea ES EAN EE AEA EREE ES 184 A Trigger timing part 1 esieni i oa na ects atlas e A nas ated eS 185 5 Trigger timing Ware 2 ecane a eae a e e E AE E 186 O Serial Protocols sai sce e EE ea E E cans datee ts sasansee canceasecnaaee 187 1 RS232 UART protocol eeeeeeeeeseeeeeeererrreereeiserersereertesssrseereteteeeseseeeeetesssneteeeeeeessesteeeeteennnnteeeeeeeeeseseeeeeeeeeesntet 188 2 SPI protocol EO 189 3 PC protocol oes eerste tsetse tees teeeseeesnneeesenecsseecsannessaneceaneseseessasccassscssesecsasseceassessassecsusseseunessaeenessessaey 190 4 12S protocol oer reeset tes testes teese tenes eccneccnneecaaecsanesssnesaasecsanccsusesassecaasecasseceuseceuseceussscussecasresaasetaaenensesany 191 5 CAN protocol eee eects tec tere teseeteeesecsaneseaneecnneesenenasesaneceaeceuneccassessusecassecassecaasecsasecenseesanssenenaeenagnety 191 6 LIN protocol a 194 7 FlexRay protocol estes teetessteese tees teesssteesseensaneesanensanessanesssncsssnesssseceassecssaseceassssusseseseessasensssensgsees 196 7 De vicef ature tablen nanna an Oe OR a a a 198 8 Command line syntax eseeessessseeeseseeeessrereessssereecccecererreeesssseeereceeeererreeeesssseeteeceeeerersereessssreeeeeeeeersseeeesseseeeeeee 199 9 Application Error dialog eee sseessssseessseeceseseseeeeeceecersrreresssseeeeeceeeerrrrreresssseeeeeccecererreeersesereeeseeeeerereeeesssseeeeeee 202
183. sing the second threshold This is typically used for finding pulses that fail to reach a valid logic level Digital MSO devices only Triggers on a combination of the state of the digital inputs and a transition edge on one digital input See Digital trigger Logic This detects a logical combination of the scope s inputs The conditions that can be applied to each input vary analog inputs can be edge level or window qualified EXT and D15 D0 if present are level qualified with a variable threshold and AUXIO is level qualified with a fixed TTL threshold See Logic trigger Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 154 Toolbars and buttons 7 11 2 1 Hysteresis Hysteresis is a feature of the advanced trigger types in PicoScope 6 that reduces false triggering on noisy signals When hysteresis is enabled a second trigger threshold voltage is used in addition to the main trigger threshold The trigger fires only when the signal crosses the two thresholds in the correct order The first threshold arms the trigger and the second causes it to fire An example will help to illustrate how this works B47 2 m 415 0 A80 5 266 1 106 5 r3 15 292 0 432 4 us 612 0 Noisy signal with a single threshold Consider the very noisy signal above It is difficult to trigger reliably on this signal with a normal rising edge trigger because it crosses the trigger threshold the red lin
184. sseesseesnscesseesseeesseessceseessseesseesseeenseesseesseeseeeenseeeaeenes 160 2 How to use rulers to measure a signal c cccsscesscesseescescesseessecesseesseeesseesseesseeenseesseesseeseseesseesseeseneensees 161 3 How to measuire a time difference ecim an ea e E E EEE E E as deed EEE E cues dezecias 162 A FIOW CO MOVE a VICW denni E E E E 163 5 How to scale and offset a signal ee sseesessesesseeeesssseeeeecceecerrecersseseeeeeeeeererrreeesssseeeeceeeeeersreeessesreeeeeeeeeseeeeeesee 164 6 How to set up the spectrum View ccssccsssecsssecssnecssecssseesssecssseesseeessseesseeesseeessseesseeesseeeesseessseeeseeesseeeeseees 166 7 How to find a glitch using persistence mode ccesccsssessssesssseseeesssessseessssessseessseesssseesseeseaseseaseseneessees 167 8 Howto set p a Mask Limit Testees ioiii cen eane eenean oaa EEE EE EE E aa scandent EEEE 171 9 HOW to Save oN rioa EF aenn aE E EREE E E eaten ata mseetts 174 10 Pow to create a link ilenionn A E OEE E EE E 178 ARAT Ge a E A E A S 180 Vi Measurement types siecisrrscerrrieiheoned irori r enna nenio EE ei E REETAN ERE EEEE EARR NEEE EROVER ETEA NNE 180 4Scope measir ements o nnne E ena eno ndenanmiee 180 2 Spectrum measurements eeeeeeeseteeeetereeetttterreettsreeeeetstteeerrteteerrtttsseerrttesetettteessesttet essere teteessseeeeesetrtter ensrettet 181 2 Signal generator Waveform types c ssccssceseeeestcesseesteesseeesseeseeesseesseeseeesseesseesseessseesseesscese
185. stopped it operates on the contents of the waveform buffer instead Button Equation Description nin Minimum Negative peak detect of all previous l e waveforms ii max Maximum Positive peak detect of all previous l waveforms Average Arithmetic mean of all previous average waveforms peak peak Peak detect Display maximum to minimum range of all previous waveforms Advanced buttons Filters group Parameters i is the input channel or other operand see under Basic buttons above f or f and f are the 3 dB cutoff frequencies of the filter in hertz Button Equation Description TE HighPass f High pass filter Attenuates low frequencies D LowPass f Low pass filter Attenuates high frequencies psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 79 A Band pass filter Attenuates high and low i B ndP f f E a gai A SAE frequencies outside the specified range M BandStop j f f Band stop filter Attenuates mid band frequencies inside the specified range These are digital filters with a finite number of taps and therefore cannot attenuate down to DC They have a minimum cutoff frequency of 1 64 000 of the scope s Sampling rate You can find the current sampling rate displayed in the Properties sheet Additional functions There are a few operators that can be entered only by using the equation box
186. t 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 45 The variables described above under Importing into Matlab are stored in a series of data blocks each preceded by a header Each variable has its own header and data block and the corresponding variable names are stored with them such as A B Tstart The following sections describe how to read each variable from the file The order of the data blocks is not specified so programs should look at the variable names to decide which variable is currently being loaded gt The header The file consists of a number of data blocks preceded by 20 byte headers Each header contains five 32 bit integers as described in the table below Bytes Value 0 3 Data format 0 10 or 20 4 7 Number of values 8 11 1 12 15 0 16 19 Name length Data format The Data format in the first 4 bytes describes the type of numerical data in the array Value Description 0 Double 64 bit floating point 10 Single 32 bit floating point 20 Integer 32 bit Number of values The Number of values is a 32 bit integer describing the number of numerical values in the array This value may be 1 for variables that only describe one value but for arrays of samples or times expect this to be a large number Name length The Name length is the length of the name of the variable as a null terminated 1 byte per character ASCII string The last null t
187. t O Always Invert C Invert when negative C Invert when positive These options are for factory use and we recommend that you do not change them Finishing Clicking OK or Cancel will return you to the Manual Ranges Setup dialog psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 69 6 5 1 1 7 Filter Method dialog Location Manual Ranges Setup dialog gt Next Purpose sets up lowpass filtering for this custom probe y Custom Probe Wizard Filter Method A Custom Probe can configure low pass filtering Filter the data before applying scaling This will automatically set and enable low pass filtering for this probe Filter Frequency 1Hz W Enabled This dialog has the same effect as manually enabling the Lowpass Filtering option in the Channel Options dialog Filtering will only occur if the attached scope device supports filtering Back Go to the Manual Range Setup dialog Next Go to the Custom Probe Identification dialog Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 70 Menus 6 5 1 1 8 Custom Probe Identification dialog Location Range Management dialog gt Next Purpose entering text to identify the custom probe Custom Probe Wizard Custom Probe Identhcaton Provide descriptive details so your new probe can be identified later Enter a name for the probe Write a short description for the probe so it can be
188. t box to fill the view Scroll bars will appear which you can drag to pan around in the view or you can pan by using the Hand tool see above Zooming in also opens the Zoom Overview window Press the Esc key to return to the Normal Selection tool If you point to the time axis the pointer changes into the horizontal marquee zoom tool BA which restricts zooming to the horizontal axis This lets you zoom in by an arbitrary amount without disturbing the vertical zoom factor Zoom in tool Turns the pointer into a zoom in tool A Click on the view with this tool to zoom in to the specified location Zooming in also opens the Zoom Overview window If you point to the time axis the pointer changes into the horizontal zoom in tool BR which restricts zooming to the horizontal axis This lets you zoom in without disturbing the vertical zoom factor Zoom out tool Turns the pointer into a zoom out tool A Click on the view with this tool to zoom out around the specified location If you point to the time axis the pointer changes into the horizontal zoom out tool A which restricts zooming to the horizontal axis This lets you zoom out without disturbing the vertical zoom factor Undo zoom Returns the view to the previous zoom and pan settings Zoom to full view Resets the view to normal size The view will no longer have scroll bars and panning will no longer be possible psw en r37 Copyright 2007 2014 Pico Techn
189. t this process click the Start button The Single trigger is the only type that allows one capture to fill the entire buffer memory Rapid PicoScope instructs the scope device to acquire a sequence of waveforms with the minimum possible delay between them The display is not updated until the last waveform in the sequence has been captured When the operation is finished you can step through the waveforms using the Buffer Navigation toolbar Note rapid triggering is available only on certain devices see device feature table and on the fastest timebases ETS Equivalent Time Sampling PicoScope captures many cycles of a repetitive signal then combines the results to produce a single waveform with higher time resolution than is possible with a single capture For accurate results the signal must be perfectly repetitive and the trigger must be stable ETS is not available on mixed signal oscilloscopes when digital channels are enabled If you select ETS when an Advanced Trigger type is enabled the trigger type will revert to Simple Edge and the Advanced Triggering button will be disabled Advanced Triggering Click to open the Advanced Triggering dialog which gives you extra trigger types beyond the simple edge trigger If this button is disabled it is because either None or ETS is selected in the trigger mode control or your scope device does not support this mode To enable the Advanced Triggering button set the control to another
190. tches and now we want to examine them in more detail The best way to do this is to switch back to normal scope mode so that we can use the advanced triggering and automatic measurement functions built in to PicoScope Click the Scope Mode button Set up an advanced pulse width trigger to look fora pulse wider than 60 ns PicoScope then finds the runt pulse straight away File Edit Views Measurements Tools Help aoe Ji nen SINS SS 871 pi 51 2 91 29 We can now add automatic measurements or drag the rulers into place to analyze the runt pulse in detail psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 171 8 8 How to set up a Mask Limit Test 1 Display a stable waveform in a scope view Adjust the voltage range and timebase so that the feature of interest fills most of the view In this example we are viewing a repetitive pulse as might be found on a data bus File Edit Views Measurements Tools Help OQ Trioser auto vy A gal ov E2 EVA wN Custom Probes Maths Channels rl Reference Waveforms xc a Serial Decoding Alarms Wop Macro Recorder Clear Mask Preferences Save Mask Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 172 How to 3 You should now be in the Mask Library dialog Library ow Mask of A Channel A is selected by default You can change this if you
191. te control by using the buttons on the Triggering toolbar Other forms of trigger marker If the scope view is zoomed and panned so that the trigger point is off the screen the off screen trigger marker Shown above appears at the side of the graticule to indicate the trigger level In post trigger delay mode the trigger marker is temporarily replaced by the post trigger arrow while you adjust the post trigger delay When some advanced trigger types are in use the trigger marker changes to a window marker which shows the upper and lower trigger thresholds For more information see the section on Trigger timing Post trigger arrow The post trigger arrow is a modified form of the trigger marker that appears temporarily on a scope view while you are setting up a post trigger delay or dragging the trigger marker after setting up a post trigger delay What is a post trigger delay The left hand end of the arrow indicates the trigger point and is aligned with zero on the time axis If zero on the time axis is outside the scope view then the left hand end of the post trigger arrow appears like this The right hand end of the arrow temporarily replacing the trigger marker indicates the trigger reference point Use the buttons on the Triggering toolbar to set up a post trigger delay psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 19 5 11 Spectrum view
192. te fs as follows fe fgs Filter type Description 0 0 to 0 1 Moving average A moving average filter is used for low cut off frequencies The length of the filter is adjusted to achieve the selected cut off frequency which is defined as the first minimum in the frequency response There is significant signal leakage above the cut off frequency This filter changes a vertical edge into a linear slope 0 1 to lt 0 5 FIR A finite impulse response filter is used for medium to high cut off frequencies This has a monotonic roll off above the cut off frequency and therefore suffers from less leakage than the moving average filter You can force PicoScope to use one or other of the filter types by adjusting the Samples control in the Capture Setup toolbar to make the ratio f f fall into one of the two ranges shown in the table As the table shows the cut off frequency must be below half the sampling frequency psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 123 Tod 1325 Digital Inputs button Location Channels toolbar MSOs only controls the settings for the digital inputs of a mixed signal oscilloscope Purpose MSO Digital She Digital on ott EES setup EEX Digital on off Switches the digital view on or off If digital inputs are activated in the Digital Setup dialog they remain active even when hidden from view Ir Digital setup Opens the Di
193. te its check box must be set Apply Set up the scope according to the settings in this dialog Add Add an event to the Actions list Possible events are Beep activate the computer s built in sounder 64 bit PCs redirect this sound to the headphone output Play Sound specify the name of a wav sound file to play Stop Capture equivalent to pressing the red Stop button psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 93 Restart Capture equivalent to pressing the green Start button Use only if the Stop Capture action was used earlier in the list Run Executable run the specified EXE COM or BAT program file You can type the file variable after the program name to pass the name of the last file saved as an argument to the program PicoScope will stop capturing while the program runs and resume after the program terminates Save Current Buffer save the current waveform from the buffer aS a psdata pssettings csv or mat file You can use the gt buffers variable to insert the buffer index number into the filename or the time variable to insert the time of capture Save All Buffers save the entire waveform buffer as a psdata pssettings csv Or mat file Trigger Signal Generator if the scope device has a triggerable signal generator start generating a signal Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37
194. the device but can be boosted in some cases by using resolution enhancement View A presentation of data from a scope device A view may be a scope view an XY view or a spectrum view Viewport The views in the PicoScope window are arranged in a grid and each rectangular area in the grid is called a viewport Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 Technology PicoScope 6 User s Guide 209 Index Yo buffer variable 92 file variable 92 time variable 92 bmp files 40 csv files 40 gif files 40 mask files 94 png files 40 psdata files converting 112 199 saving 40 pskeys files 102 psmaths files 72 76 80 psreference files 83 pssettings files 40 txt files 40 5 50 Q DC inputs 116 198 A AC adapter 203 AC coupling 205 AC power 100 Accelerometer inputs 116 Access 3 Add Measurement dialog 54 Adding a measurement 54 Address contact 4 Advance function 76 Advanced measurement settings 55 Advanced Options toolbar Channel Labels button 115 Notes button 115 Rulers button 115 Advanced triggering 149 151 types 152 198 Alarms 36 92 save on trigger 1 74 Analog intensity 134 Analog offset 117 AND logical operator 156 Animated GIF 40 Arbitrary waveform generator 138 198 editing window 143 files 142 importing from channel 145 Automotive menu 110 Auxiliary AUX I O 149 198 Average statistics 21 AWG 205 Axis 12 17 19 205 auto arrange 51
195. the filter box at the top of the ID column will cause only frames with an ID of 6C7 to be displayed Toggle the statistics columns that list measurements such as packet start and end times and signal voltages Search for any data value in a specified column of the table Instructs PicoScope to decode the raw data again This is necessary if you have changed the Start from condition for example Clear all data and settings in the table New data will appear the next time that the scope captures a waveform Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 92 Menus 6 5 5 Alarms dialog Location Tools gt Alarms Purpose gives access to the alarms feature which specifies actions to be taken on various events Alarms Event Capture w Beep jj Save Current Buffer 20100 Run Executable Program Event Select the event that will trigger the alarm Capture when a waveform is captured If triggering is enabled this option corresponds to a trigger event You can therefore use this function to save a file on each trigger event Buffers Full when the number of waveforms in the waveform buffer reaches the maximum waveform count Mask s Fail when any channel fails a mask test Actions list Add an action to this list by clicking Add Whenever the specified event occurs PicoScope will execute the all the actions in the list from top to bottom NOTE For an action to execu
196. the grid up or down Scroll to the next waveform on the right Scroll to the last waveform in the buffer The number of waveforms depends on the Tools gt Preferences gt General gt Maximum Waveforms setting and on the type of scope connected Click anywhere on the main PicoScope window to close the Buffer Overview window Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 38 Menus 6 Menus Menus are the quickest way to get to PicoScope s main features The Menu bar is always present at the top of the PicoScope main window just below the window s title bar You can click any of the menu items or press the Alt key and then navigate to the menu using the arrow keys or press the Alt key followed by the underlined letter in one of the menu items Click a menu now for more information File Edit Views Measurements Tools Help The list of items in the menu bar may vary depending on the windows that you have open in PicoScope psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 39 6 1 File menu Location Purpose E Menu bar gt File gives access to file input and output operations Open Save Save As Waveform Library Browser Startup Settings d Print Previews Print Recent Files d Exit Connect Device This command appears only when there is no scope device connected It opens the Connect D
197. the longer the older waveforms will remain on the screen The intensity or color with which new waveforms are drawn The intensity or color to which the oldest waveforms decay when the decay time expires If the decayed intensity is zero then older waveforms will be completely erased from the display after the decay time For non zero values of decayed intensity old waveforms will remain indefinitely on the screen at that intensity unless overwritten by new ones Custom Options psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 135 Line Drawing The type of line drawn between samples that are adjacent in time Color Scheme Background Data Hold Persistence Mode Phosphor Emulation Joins each pair of sample points with a line whose intensity varies inversely with the slew rate Constant Density Joins each pair of sample points with a line of uniform color Scatter Draws sample points as unconnected dots Phosphor Uses a single hue for each channel with varying intensity Color Uses a color from red to blue to represent the age of each waveform Black Overrides the Color Preferences dialog This is the default White Overrides the Color Preferences dialog User Preference Sets the background color to the preference set in the Colors page of the Preferences dialog This option is enabled only when Persistence Mode see below is set to Time Dela
198. the sum of harmonic powers to the power at the fundamental frequency V gt V V WV V 4 V THD 20 0 7 i Total Harmonic Distortion plus Noise THD N The ratio of the harmonic power plus noise to the fundamental power THD N values are always greater than the THD values for the same signal THD N 20 og H of squares of RMS values excluding datum RMS value of datum Spurious free Dynamic Range SFDR This is the ratio of the amplitude of the specified point normally the peak frequency component and the frequency component with the second largest amplitude call it SFDR frequency The component at the SFDR frequency is not necessarily a harmonic of the fundamental frequency component For example it might be a strong independent noise signal Signal Noise Distortion to Signal Noise Ratio SINAD The ratio in decibels of the signal plus noise plus distortion to noise plus distortion SINAD 20109 RMS value of datum sum of squares of all RMS components except datum Signal to Noise Ratio SNR The ratio in decibels of the mean signal power to the mean noise power Hanning or Blackman windows are recommended because of their low noise SNR 20109 RMS value of datum jsum of squares of all values excluding datum and harmonics Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 182 Reference Intermodulation Distortion IMD A measure of the distortion c
199. tions Only inputs with the Used box checked see above are included in the trigger logic w ekea AND all of the input trigger conditions must be met a ddia NAND none of the input trigger conditions must be met a OR OR one or more of the input trigger conditions must be NOR met 4 NOR none of the input trigger conditions must be met a ANOR XOR an odd number of input trigger conditions must be met XNOR an even number of the input trigger conditions must be met Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 158 Toolbars and buttons 7 12 Zooming and Scrolling toolbar The Zooming and Scrolling toolbar allows you to move around a scope view or Spectrum view Each button has a keyboard shortcut as listed below N RAIA 914 Ctri S or Esc Ctri D Ctri M Ctri I Ctri O Ctri U Normal Selection tool Restores the pointer to its normal appearance You can use this pointer to click buttons drag rulers and operate any other controls in the PicoScope window Hand tool Turns the pointer into a hand ay that you can use to click and drag the view to pan it vertically and horizontally when you are zoomed in You can also pan using the scroll bars Press the Esc key to return to the Normal Selection tool Marquee Zoom tool This button turns the pointer into a marquee zoom tool ER Use it to draw a box called a marquee on the view and PicoScope will magnify tha
200. tive software only 50 50 ohm inputs AT Advanced triggers AW Arbitrary waveform generator AX Auxiliary input output BL Switchable bandwidth limiter DC DC offset adjustment DI Digital inputs EX External trigger input FC Frequency counter FR Flexible resolution LP Lowpass filtering RA Rapid triggering RU Runt pulse triggering SG Signal generator ST Signal generator triggers SW Signal generator sweep mode psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 199 9 8 Command line syntax PicoScope can be run from the Windows command line allowing you to run tasks manually or under the control of a batch file or other program To display the GUI PicoScope lt filename gt lt filename gt Specifies a single psdata or pssettings file Example PicoScope C Temp source psdata To display help PicoScope Shows help on all command line options To convert a psdata file PicoScope C c Converts a psdata file from one format to another Cannot be used with p rint Syntax PicoScope c onvert lt names gt d lt names gt f lt format gt q b lt n gt lt m gt all v lt viewportname gt lt names gt Specifies a list of one or more directories or psdata files Wildcards may be used to specify multiple files If a directory is specified all psdata files within that directory will be specified This is a mandatory argument
201. tomatically over the internet Ifyou dont have access to the internet you can save the file to disk and email itto supp Email Address optional This will only be used to contact you about this problem Describe what you were doing when the error occurred optional i Restart PicoScope 6 Beta Save To File Send Report It would be very helpful to us if you could send us a report of the problem All you need to do is click the Send Report button then save the zip file in a place where you can easily find it again such as on your desktop Then email the zip file to us at support picotech com and we will do the rest Don t worry if you can t think of a comment to enter in the text box just leave it empty and send the report to us anyway psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 203 9 10 Flexible power The flexible power system for PicoScope devices provides a choice of power sources In most cases a straightforward USB connection will be enough to power the scope If PicoScope needs you to switch to a different powering method it will display a dialog Similar to this More information on Power Options Power Options Please ensure that your scope is powered from one of the following sources SSe One USB 3 0 port using the Pico USB 3 0 cable n One USB charging port often marked with a symbol similar to the one shown s Two standard USB ports using the double
202. ton to enter Accumulate mode which continues adding serial frames to the end of the table until you click the button again View Controls which details of the data appear in the table The sub menus are as follows Frames Packets which types of frames or packets are displayed Fields which columns appear in the data table Display Format hexadecimal binary ASCII or decimal format Font Size the character size used in the table Link Link lt None This drop down list selects a link file that o maps numbers to strings The serial data window will show these strings in place of matching numerical values Creates a new link file Use a text editor to add your own number string pairs save the file and then open it using the drop down control See also How to create a link file psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 91 Start from Filter Statistics Search Refresh Clear Use this button to enter a condition that PicoScope will wait for before collecting data When PicoScope detects a packet that matches this condition it will collect all subsequent data subject to filtering if used see above and display it in the table Click to show the filter bar which allows you to enter arbitrary data above each column in the table The table will display only those packets that match the data you have entered For example entering 6C7 in
203. ts Count at O when triggering is enabled and counts up to the number of captures specified in the General page of the Preferences dialog To add edit or delete measurements See Measurements toolbar To change the width of a measurement column First ensure that the Column Auto width option is not enabled in the Measurements menu If necessary click the ASEmV ASSmv option to switch it off Then drag the vertical separator between Sic column headings to resize the columns as shown opposite 2 079 pay l 0 3a To change the update rate of the statistics The statistics Min Max Average Standard Deviation are based on the number of captures shown in the Capture Count column You can change the maximum capture count using the Capture Size control in the General page of the Preferences dialog Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 22 PicoScope and oscilloscope primer 5 14 Pointer tool tip The pointer tool tip is a box that displays the horizontal and vertical axis values at the mouse pointer location It appears temporarily when you click the background of a view Pomter tool tip 26 761 7ps 3r ESI mi Jri mi Pointer tool tip in a scope view psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 23 5 15 Signal rulers The signal rulers sometimes called cursors help you measure absolute and relativ
204. tting anonymous usage statistics These statistics help us prioritise the most frequently used features View our privacy policy Automatic Updates Don t check for updates Notify me Reset Usage Statistics If you prefer you can visit www picotech com periodically to check for updates PicoScope will regularly check for updates to your software Requires an internet connection If you checked the Don t remind me again option in the Software Updates dialog this button enables reminders again To help us to continue improving PicoScope the program periodically sends back to our developers anonymous information about which features you use the most This information does not contain your name email address or any other personal details but does allow us to identify which country you are in If you do not wish to send us this information uncheck this box psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 109 6 6 Help menu Location Help Purpose gives access to the PicoScope 6 User s Guide and related information E4 User s Guide Online Documentation Online Forum Send Feedback Check for Updates About PicoScope 6 User s Guide This is the most complete source of information on PicoScope Online Documentation Find manuals and training guides for Pico Technology products Online Forum Request technical support and discuss
205. units ex exp Natural exponent Raise e the base of the natural logarithm to the power of x Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 78 Menus oo avax Lt log derivative integral Logarithm Base 10 logarithm Derivative Calculated with respect to the x axis Note the derivative of a sampled signal contains a large amount of noise so it is advisable to apply digital low pass filtering to all channels used as inputs to this function Integral Along the x axis Click Trigonometric Buffered or Filters to reveal alternative groups of buttons Advanced buttons Trigonometric group Button ES a m m wi m at al mo co uri m at Equation pi sin cos tan sinh cosh tanh Description Pi The ratio of a circle s circumference to its diameter Inverse Modifies the sin cos and tan buttons to the inverse trigonometric functions asin acos and atan Sine The operand is in radians Cosine The operand is in radians Tangent The operand is in radians Hyperbolic sine Hyperbolic cosine Hyperbolic tangent Advanced buttons Buffered group When the scope is running these functions operate continuously on all waveforms since the scope started capturing If a math channel containing these functions is enabled when the scope is
206. us waveform button Display the previous waveform in the buffer Waveform number indicator Show which waveform is currently displayed and how many waveforms the buffer holds You can edit the number in the box and press Enter and PicoScope will jump to the specified waveform gt Next waveform button Display the next waveform in the buffer Last waveform button Display the last waveform in the buffer gd Buffer Overview button Open the Buffer Overview window for quick selection of buffer waveforms psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 137 7 8 Measurements toolbar The Measurements toolbar controls the measurements table Measurements Rulers It contains the following buttons Add Measurement Adds a row to the table and then opens the Add Measurement dialog Edit Measurement Opens the Edit Measurement dialog for the currently selected measurement You can also edit a measurement by double clicking on a row of the measurements table Delete Measurement Deletes the currently selected row from the measurements table Rulers Opens the Ruler settings dialog to control the operation of phase rulers This toolbar normally resides at the bottom of the program window but can be moved to the top using the Tools gt Preferences gt Options gt Bottom toolbar at top control Copyright 2007 2014 Pico Technology Ltd All rights reserved
207. use the Add View command see above Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 52 Menus Grid Layout Arrange Grid Layout Reset View Sizes Move View To Arrange views Auto arrange axes Reset View Layout View Properties Reference Waveforms Masks Add Measurement Edit Measurement Delete Measurement 6 3 1 Custom grid layout dialog The grid layout defaults to Automatic mode in which PicoScope automatically arranges views in a grid You can also select one of the standard grid layouts or create a custom layout which PicoScope will preserve as you add or remove views Adjust the grid layout to fit the number of views Moves any tabbed views to empty viewports Overrides any previous choice of grid layout If you have resized any of the views by dragging the vertical or horizontal separator bars between viewports this option resets all the viewports to their original sizes Move a view to a specified viewport You can achieve the same effect by dragging the view by its name tab and dropping it in a new viewport See How to move a view If multiple views are stacked in the same viewport move them into their own viewports Scale and offsets all traces to fill the view and avoid overlaps Reset the scale factor and offset of the selected view to their default values Show the Properties sheet which lists scope settings that are normally hidden Copy
208. utomatic ranges should be ideal for most applications If you select I will manage the Custom Probe Ranges manually clicking Next will take you to the Manual Ranges Setup dialog Click Back to return to the Scaling Method dialog What is Auto ranging When the Auto ranging function is selected PicoScope continually monitors the input Signal and adjusts the range when necessary to allow it to display the signal with maximum resolution This function is available on all standard ranges and can be used with custom ranges only if you select Let the software manage my ranges for me automatically in this dialog psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 65 6 5 1 1 6 Manual Ranges Setup dialog Location Purpose iy Custom Probe Wizard Manual Ranges Setup Setup the Custom Ranges manually Use the list on the nght to manually configure the available ranges on the probe Each hardware scope has its own set of input ranges Select a device from below to consider whilst setting up custom ranges PicoScope 2203 The bar on the nght demonstrates how much of the scope s input range is being utilised by the custom range currently selected from the list Help How to use the dialog Range Management dialog gt Advanced gt Next creates ranges manually for your custom probe massa 40 60 A 30 70A 0 1004 50 150 A 150 250 A
209. w Time ruler handle Drag the ruler handle to the right A time ruler vertical broken line will appear on the scope view Release the ruler handle when the ruler is at the time you wish to use as the reference when dragging MV the handle Drag the second white ruler handle to the right until its ruler is at the time to be measured Look at the ruler legend the small table that appears on the scope view It should have a row marked by a small white square The first two columns show the times of the two rulers and the third column shows the time difference Cursor changes O 124 0 ps 44 0 ps 85 0 ps The frequency legend shows 1 4 where A is the time difference O 3337 Hz 2002 0 RPM y You can use a similar method to measure a frequency difference on a spectrum view psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 163 8 4 How to move a view You can easily drag a view from one viewport to another This example shows four viewports which contain scope views called Scope 1 to Scope 4 Suppose that you wish to move the Scope 4 view to the top left viewport Ay PicoScopes a 1 Click on the name tab of the G Scope 4 view and hold the mouse 2 th 1usidv v x1 Elms button down Scope iN i Q Tioger auto v A willa lov EA 2 HR 2 Drag
210. want to apply the mask to a different channel 4 Click the Generate button to open the Generate Mask dialog Name Mask of A xoffset 5ms iale Yoffet 20mv Hias psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 173 5 For now accept the default settings and click Generate Then click OK in the Mask Library dialog to return to the scope view File Edit Views Measurements Tools Help De ML a li F G 200ns div v x1 1s DC v 8a of Name Span Test Failures Value Mask Failures Whole trace Pass 0 You now have a mask drawn around the original waveform 6 PicoScope stops capturing when you enter the Mask Library dialog so press the Space bar to restart If any captured waveform fails to fit inside the mask the offending parts are drawn in a contrasting color The Measurements table shows the number of failures File Edit Views Measurements Tools Help O 000000 e Span Test Failures Value Mask Failures Whole trace Fail 453 QQ tigger auto lla wko Blos BAR BEG 7 You now have a functioning mask limit test Please read the Mask Limit Test topic for information on editing importing and exporting masks It is also possible to set up a Mask Limit Test on a spectrum or XY view For further information on this feature see Mask Limit Testing Copyright 2007 2014 Pico
211. y Decay Timeout Old waveforms fade until they reach Decayed Intensity and then disappear Infinite Old waveforms fade until they reach Decayed Intensity and then remain indefinitely unless overwritten by new waveforms Time Delay Points on the display are drawn at full intensity when hit by a waveform and are then allowed to decay to Decayed Intensity The behavior after this depends on the Data Hold setting see above Frequency Points on the display are drawn with a color or intensity that depends on the frequency with which they are hit by waveforms Copyright 2007 2014 Pico Technology Ltd All rights reserved psw en r37 136 Toolbars and buttons 7 Buffer Navigation toolbar The Buffer Navigation toolbar allows you to select a waveform from the waveform buffer Kd lt 4 oris D gt DP ie What is the waveform buffer Depending on the settings you have chosen PicoScope may store more than one waveform in its waveform buffer When you click the Start button or change a capture setting PicoScope clears the buffer and then adds a new waveform to it each time the scope device captures data This continues until the buffer is full or you click the Stop button You can limit the number of waveforms in the buffer to a number between 1 and 10 000 using the General preferences page You can review the waveforms stored in the buffer using these buttons KI First waveform button Display waveform 1 H Previo
212. y available from the www mathworks com website PicoScope 6 saves data into the MAT File format in a specific way which is detailed below Importing into MATLAB Load the file into your workspace using this syntax load myfile Each channel s data is stored in an array variable named by the channel So the Sampled data for channels A to D would be in four arrays named A B C and D There is only one set of time data for all channels and this is loaded in one of two possible formats 1 A start time an interval and a length The variables are named Tstart Tinterval and Length 2 An array of times sometimes used for ETS data The time array is named T If the times are loaded in as Tstart Tinterval and Length then you can use the following command to create the equivalent array of times T Tstart Tinterval Tstart Length 1 Tinterval Note The size of the largest file that MATLAB can open depends on the resources of the computer It is therefore possible for PicoScope to create a MATLAB file that some installations of MATLAB might be unable to open Please be aware of this risk when Saving critical data Exploring the file format The full file specification available from www mathworks com is comprehensive so this guide does not describe the entire format Instead this guide describes enough of the format to allow you to get data from the file and use it in your own program psw en r37 Copyrigh
213. ymbol i appears if the input signal exceeds the selected range If you select Auto PicoScope will continually adjust the vertical scale so that the height of the waveform fills as much of the view as possible Coupling Control Sets up the input circuitry AC coupling rejects frequencies below about 1 Hz DC coupling accepts all frequencies from DC to the scope s maximum bandwidth 509 DC low impedance option see Device feature table Accelerometer switches on the current source output for IEPE enabled scopes such as the PicoScope 4224 IEPE The User s Guide for the oscilloscope has details of the IEPE channel specifications Frequency enable the built in frequency counter if available Only one channel at a time can be operated in this mode For availability see Device feature table Digital Inputs button MSOs only ll psw en r37 Copyright 2007 2014 Pico Technology Ltd All rights reserved PicoScope 6 User s Guide 117 7 3 1 Channel Options menu The Channel Options menu appears when you click the Channel pos x WE Options button for example xl e Resolution Enhance Seleck the maximum amp 0bits v number of bits When should I use this Feature Axis Scaling Scale 1 00 alee Offset 0 00 24 5 Analog Options DC Offset OV Ble Ay on the Channels toolbar Resolution Enhancement Select the maximum 8 0 bits v number of bits

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