2013 high tech update - l973d1 973d - 2013 high tech update
TRANSCRIPT
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PicoScope Advance FeaturesPicoScope Advance Features
• Objectives
– Proficiency with PicoScope Advanced Features:• Triggers
• Rulers
• Masks
• Alarms
• Reference Waveforms
– Manipulate and Save Waveforms• Load and view saved waveforms
– Use of the Toyota Waveform Library• Load “Known Good” waveforms
• Compare “Known Good” waveforms to live data
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PicoScope Software PicoScope Software
This is the Windows Command Bar that loads with PicoScope for TMS*.
It includes the Demo Device software
* With the PicoScope plugged into the computer.
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PicoScope Software PicoScope Software
“PicoScope TMS” links to the PicoScope software with the
“Automotive” database and the “Demo” program.
“TMS Database Launcher” Links to the Lexus Waveform Database and
launches the PicoScope software with the link to that database.
Open the “Start” menu now and launch the “PicoScope TMS” Software.
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PicoScope SoftwarePicoScope Software
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PicoScope Screen DivisionsPicoScope Screen Divisions
Time 10 Divisions
V
olt
age
10
Div
isio
ns
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PicoScope Screen DefaultsPicoScope Screen Defaults
The default position for “0” on the vertical axis is in the
center of the screen.
The default position for “0” on the horizontal axisis at the left of the screen.
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PicoScope ScreenPicoScope Screen
If the “0” point on the vertical axis does not line up with a hash mark, the “0” position is indicated with a dash.
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PicoScope ToolbarsPicoScope Toolbars
PicoScope Tool Bars
Scope Mode. This sets up PicoScope to operate as an oscilloscope. This is the default.
Auto Setup. Clicking on this icon sets up the timebase and signal range (voltage) to display the signal. This is usually a good starting point.
Home. Restores PicoScope to its default settings. Equivalent to the File > Startup Settings > 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
Horizontal Zoom Control. Usually set to x1. Used to stretch the waveform along the horizontal axis without changing the voltage scale.
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PicoScope Channel ToolbarPicoScope Channel Toolbar
Channel Toolbar for Channel “A”.
Channel Options button. Opens the Channel Options menu with options for:•Probes•Resolution enhancement, •Scaling and filtering.
Range control. Sets up the scope device to capture signals over the specified range of values. In “Auto” PicoScope continually adjusts the vertical scale to the Waveform.
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.
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PicoScope ProbesPicoScope Probes
Channel Options Icon / Menu
Built-in probes. The built-in probes are supplied by Pico and do not change unless you download an authorized PicoScope update.
PicoScope Probes Menu
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PicoScope ProbesPicoScope Probes
Hint: The Channel Options icon is greyed out when the Input
Range for the channel is “Off”.
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Overrange IndicatorOverrange Indicator
Set the voltage range to 2 volts
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Overrange IndicatorOverrange Indicator
This symbol indicates that the trace is off the screen.
The Overrange Indicator will appear
when the input exceeds the channel’s range
After observing the Overrange Indicator, set
the range on channel “A” back to “Auto”.
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Choosing TriggersChoosing Triggers
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Setting TriggersSetting Triggers
This is the Trigger Menu
The Trace will not startuntil the voltage level rises
by .215 volts
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Set a Trigger to Stabilize the PatternSet a Trigger to Stabilize the Pattern
Click on “Auto”
Set a Trigger to stabilize the pattern
Drag the “Trigger Diamond” up from “0” volts to stabilize the trace
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Stopping the TraceStopping the Trace
Start and Stop buttons
Hint: The trace can be started and stopped with the space
bar, but only if your last mouse click was on the white portion
of the screen.
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PicoScope Toolbars (Continued)PicoScope Toolbars (Continued)
Samples Control. Sets the maximum number of samples that will be captured for each channel.
The Buffer Navigation Toolbar allows you to select a waveform from the waveform buffer.
The Buffer Navigation Button in the Button Navigation Toolbar allows quick navigation of saved waveforms in the buffer.
Waveform Number Indicator. Shows which waveform is currently displayed, and how many waveforms are currently in the buffer.
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PicoScope Toolbars (Continued)PicoScope Toolbars (Continued)
Normal Selection Tool. Use this pointer to click buttons, drag and operate any other controls in the PicoScope window.
Hand tool. Use to click and drag the view to pan it vertically and horizontally when you are zoomed in.
Zoom-In or Zoom Out Tool. Turns the pointer into a zoom-in or zoom out tool.
Marquee Zoom Tool. Use it to draw a box (called a marquee) on the view and PicoScope will magnify that box to fill the view.
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.
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Timebase RulersTimebase Rulers
Change the scaling on the NE waveform to 50%
To add the NE waveformTo the display, change channel
“D” to “Auto”
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Timebase RulersTimebase Rulers
The timebase rulers display RPM and Hz here.
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Horizontal (Voltage) RulersHorizontal (Voltage) Rulers
To display Injector Amps,Set channel “B” to “Auto”
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PicoScope File MenuPicoScope File Menu
This is the File Drop Down Menu
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PicoScope Edit MenuPicoScope Edit Menu
This is the Edit Drop Down Menu
When you click on “Notes” this Notes Field opens at the Bottom
of the Screen
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PicoScope View MenuPicoScope View Menu
This is the Views Drop Down Menu
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Waveform Properties Waveform Properties
The “Properties” tab in the Views drop down menu
displays waveform information.
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PicoScope Measurements MenuPicoScope Measurements Menu
This is the Measurements Drop Down Menu
Hint: When measuring between rulers, capture
more than 2 cycles.
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PicoScope Tools MenuPicoScope Tools Menu
This is the Tools Drop Down Menu
This is the “General” tab under “Preferences”.
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PicoScope Tools MenuPicoScope Tools Menu
This is the Tools Drop Down Menu
This is the “Colors” tab under “Preferences”.
Hint: To change the colors on a previously saved waveform, change the colors prior to
opening the waveform.
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Starter Draw WorksheetStarter Draw Worksheet
This Worksheet Highlights Triggers and the use of the
600a Amp Clamp.
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Starter Draw WorksheetStarter Draw Worksheet
The Starter Draw worksheet requires 3 captures:1.Normal Start2.Starter draw with Injection fuse pulled.3.Starter draw with Injection fuse pulled and one spark plug removed.
• All traces should span the entire screen.
Starter Draw Worksheet Common Issues:
• Amp Clamp:• Amp Clamp not turned on. • Amp Clamp battery weak.• Amp Clamp not zeroed.• Amp Clamp on backwards.• Incorrect range selection
• Trigger:• Set on the incorrect channel.• Set out of range• Set on falling trace.
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Starter Draw WorksheetStarter Draw Worksheet
Amp clamp on Backwards
The Amp Clamp can only measure 100 amps in the negative direction.
This results in the trace going off the screen.
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Starter Draw WorksheetStarter Draw Worksheet
Trigger set on Channel “A”
Since the PicoScope is in “streaming” mode, and the trigger is not met, the waveform does not start. Instead, it streams off the left of the screen.
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Starter Draw WorksheetStarter Draw Worksheet
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Starter Draw Worksheet ReviewStarter Draw Worksheet Review
1. Normal StartAnimations\Starter Worksheet Waveform 1.psdata
2. Starter draw with Injection fuse pulled. Animations\Starter Worksheet Waveform 2.psdata
3. Starter draw with Injection fuse pulled and one spark plug removed.Animations\Starter Worksheet Waveform 3.psdata
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MasksMasks
Increase the “Y” Offsetto make the Mask less sensitive
Generate a Mask of Waveform “D”
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MasksMasks
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MasksMasks
Hint: Disable the Mask before saving the
waveform.
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AlarmsAlarms
Must be checked to be enabled
To display channel “D”, set it
to “Auto”.
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Mask & Alarm WorksheetMask & Alarm Worksheet
The Mask and Alarm Worksheet Requires 1 capture:
1.Parasitic Draw Mask with Alarm set to:• Beep.• Save current waveform.
• Vehicle Setup:• Place amp clamp on battery cable with arrow towards negative.• Hood closed or Hood latch latched.• All doors locked and Smart Key out of range.• Amp clamp zeroed.• Amp clamp turned on.
• Alarm:• Disable mask and alarm before saving PicoScope file.
• Sample Alarm Capture:
• Animations\parasitic draw mask fail.psdata
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Mask & Alarm WorksheetMask & Alarm Worksheet
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Reference WaveformsReference Waveforms
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Using Reference WaveformsUsing Reference Waveforms
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Using Reference WaveformsUsing Reference Waveforms
Live
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Scaling / Offset ControlsScaling / Offset Controls
Scale Control
Offset Control
Delay Control
Send to back
Bring to front
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Reference Waveform WorksheetReference Waveform Worksheet
The Reference Waveform Worksheet Requires 2 captures:
1.Capture a Fuel Pump Waveform.• Use the Techstream Active Test to turn the Fuel Pump on and off.• Save the waveform.
2.Using the Waveform that you saved in step 1.• Convert the screen capture into a reference waveform.• Using the reference waveform file just created, run the ABS active
test again and save a file with both patterns.
Sample Reference Waveform Capture:
• Animations\Corolla fuel pump.psdata
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Reference Waveform WorksheetReference Waveform Worksheet
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PicoScope Best PracticesPicoScope Best Practices
• Use of the TMS Waveform Library
• Ground Plane Issues
• Pico Gap Work Around
• Passive 20:1 attenuator
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PicoScope Waveform DatabasePicoScope Waveform Database
Generic vehicle Selections Available under Charging and
Starting.
Hint: The “Automotive” tab is replaced with a Model Specific tab whenUsing the TMS Database Launcher to start the PicoScope software.
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TMS PicoScope Waveform LibraryTMS PicoScope Waveform Library
Clicking on the TMS Database Desktop Icon brings up the
PicoScope WaveformLibrary Launcher.
Clicking on “Skip” will launch PicoScope with the Pico Automotive Menu
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PicoScope Waveform LibraryPicoScope Waveform Library
This is the Windows Command Bar that loads with TMS Waveform Database*.
It does not include the Demo Device Software
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TMS PicoScope Waveform LibraryTMS PicoScope Waveform Library
Here is an example of a CAN signal from the TMS
Waveform Library.
Hook up the PicoScope per the “Notes” section to capture this waveform.
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Ground Plane IssuesGround Plane Issues
The PicoScope Inner Circuitry connects the ground side of all the inputs together.
It is a good practice to ground only one PicoScope lead and that ground should be the negative battery cable
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“Pico Gap”“Pico Gap”
Is data lost in the gap between screens?
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Pico Gap Work AroundPico Gap Work Around
Trigger must be out of waveform’s range
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Pico Gap Work AroundPico Gap Work Around
Notice that the glitch has been captured
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PicoScope Over Voltage ProtectionPicoScope Over Voltage Protection
Passive 20:1 attenuator
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QuestionsQuestions
Questions????
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PicoScope Proficiency WorksheetPicoScope Proficiency Worksheet
To complete the PicoScope Proficiency Worksheet:
•Create a reference waveform from the CAN KOEO waveform in the TMS Database.•Capture a live waveform that matches the CAN KOEO waveform.•Save that one screen as a PicoScope file.•Show your results to your Instructor.
Here is an example of the waveform:
• Animations\Final CAN Worksheet.psdata
•For extra credit Change the colors so that CAN Hi is red and CAN Lo is blue.
• Refer to the file above.
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Hi Tech Final WorksheetHi Tech Final Worksheet