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Lab Scope Plug-in User Manual - Snap-on

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1. 4 2 Making Selections Making selections consists of moving the cursor highlight using the Thumb Pad and pressing the Y v to complete the selection When a right gt arrow displays to the right of a menu option you can select from a submenu For more information refer to the Navigation chapter in your MODIS Display User Manual 17 Multimeter Operations This section explains the Multimeter menu and operations Graphing Meter Digital Meter Figure 5 1 Multimeter selection from main menu The following is an outline of basic Multimeter software operation 1 Select Multimeter software Select the type of Multimeter software and a test configuration for the selected tool See Selecting Multimeter Software on page 18 2 Connect test leads Connect appropriate leads and clips to the Lab Scope Plug in unit See Connecting Leads and Adapters on page 4 3 Connect the Lab Scope Plug in to the vehicle Procedures will vary 4 Perform the test Set up test and evaluate test results See Performing Multimeter Tests on page 20 5 1 Selecting Multimeter Software There are two types of Multimeter tools available e Graphing Meter See Graphing Meter on page 19 e Digital Meter See Digital Meter on page 20 P To select a Multimeter option 1 From the main menu select Multimeter gt Graphing Meter or Digital Meter 2 Select a test option 18 Multimeter Operations Selectin
2. e Channel status information e Digital or graphical test results e Saved data e Cursors 4 1 3 Lower Toolbar The lower toolbar controls vary depending on the active mode and stage of operation Table 4 2 16 Navigation Table 4 2 Lower toolbar controls Channel number Test Lead Raster Spacing Trigger Type Trigger Position Sensitivity Adjustment Making Selections Lets you select the channel to adjust Displays the current test connection for the channel Displays the current units of measurement for the channel Indicates when a channel is calibrated or not ed Moves the selected channel s zero 0 position up or down within the test display area Adjusts the vertical spacing between the cylinders in the Ignition Scope Raster pattern Sets the amount of time displayed across the screen Sets the criteria used to start the display of data there are three types of Trigger settings None Channel and Cyl Lets you change the Trigger edge for the specified channel from rising to falling Moves the trigger point for the specified channel it can be moved up down left or right Lets you adjust the ignition scope sensitivity P To move between the upper and lower toolbars e Press the up A and down Y arrows When Easy Scroll is active press the N X button to move to the upper toolbar Refer to the MODIS Display User Manual for more Easy Scroll information
3. 20 19 20 32 Low Amps 40 19 20 32 manual conventions 1 3 manuals additional 3 MC Dwell 60 19 MC Dwell 90 19 messages 2 important 2 note 2 65 Index multimeter 18 30 graphing meter 19 performing tests 20 selecting software 18 noise filter 28 53 54 58 Ohms 20 pausing data 21 peak detect 28 48 53 plug in capabilities 11 plug in slot 10 powering 4 presets 36 copying and moving 44 deleting 43 editing 42 identifying 42 loading 42 management screen 41 selecting all 44 using 41 44 pressure transducer 46 print 25 printing screens 25 probe 28 33 34 39 test 14 procedures 2 Pulse Width 19 reset 24 review 21 Safety iii iv safety information iil save 24 saving data 24 25 scale 28 scales display 26 scope 31 44 ignition scope 32 performing tests 35 selecting software 31 secondary coil adapter 14 setup button 25 N O 66 setup options 25 grid 26 ignition system 37 inverse colors 27 scales display 26 trigger display 38 units 25 signal zero offset 29 snapshot 16 21 22 23 24 changing settings 23 split lead adapter 45 sweep setting 30 symbols 1 T technical specifications 10 temperature range operating 11 storage 11 terminology 2 test leads 12 14 connecting 4 7 test probes 14 testing tips 45 threshold 30 Auto Threshold Select ATS 30 Manual Threshold Select MTS 30 tool help 3 toolbars 15 16 trigger display 38 trigger See display trigger U units 25 US
4. When the reset is complete the confirmation message disappears 5 2 7 Saving Data gt The Save button lets you store data in memory To save data 1 Select the Save button A dropdown menu displays 2 Select an option Save Movie This feature allows you to save up to 2000 frames of data buffered data plus data transmitted after triggering Save Frame This feature allows you to save up to 512 frames of buffered data data held in scan tool memory Save Image This feature allows you to capture a single screen as an image Image files can be opened with common computer programs such as Microsoft Paint The Setup Saved Data Notation dialog box displays 3 Select from the menus to set preferences as necessary The Setup Saved Data Notation dialog box works the same as the Edit Saved Data Notation dialog box found in the Saved Data mode Refer to the MODIS Display User Manual for operating details NOTE If you plan to save many screens from the same vehicle select Yes for Keep Entries This preference retains your settings the next time you select Save 24 Multimeter Operations Performing Multimeter Tests 4 When you are finished setting preferences select Save A confirmation message displays with saved data retrieval instructions 5 Press Y v to close the confirmation message 5 2 8 Printing The Print button lets you print the displayed screen NOTE Selecting Inverse Colors
5. Help Your unit has Tool Help containing reference and procedural information found in this and other tool related user s manuals From the main menu access Tool Help on the Utilities menu Getting Started This section explains how to get started using your MODIS Lab Scope Plug in Before you can use your MODIS Lab Scope Plug in you must do the following 1 Power the MODIS unit 2 Connect leads and adapters as needed 2 1 Powering the MODIS Unit Refer to your MODIS Display User Manual for more unit powering information P To power on the unit e Press the Power button 2 2 Connecting Leads and Adapters The following section explains how to connect the provided Lab Scope Plug in leads and adapters as needed 2 2 1 Channel One Lead be ta es fe AO Pee i td a o a a a Pate anne a 7 e Figure 2 1 Sample yellow lead connection Getting Started Connecting Leads and Adapters P To connect the Channel 1 lead 1 Plug the right angled black ground plug to the common ground socket on the Lab Scope Plug in The black stackable plug is not connected to the lab scope It is used when connecting another lead that requires a connection to the common ground socket 2 Plug the right angled yellow connector into the socket labeled CH1 3 Attach the yellow alligator clip to the yellow straight end of the lead and the black alligator clip to the black straight end of the lead 4 Co
6. Notice the difference in readings 58 Using Sensitivity Adjustment Sensitivity Adjustment is used in the Ignition Scope to set the detection sensitivity of cylinder firings See Sensitivity Adjustment on page 34 and Missed Cylinder Detection on page 34 for more information D 1 When To Use Sensitivity Adjustment The sensitivity adjustment affects the ability of the ignition scope to detect ignition firings Generally it is best to set the sensitivity level just above the spark Figure D 1 Bajm miso O rezar gas Sweep Display Trigger 1005 Par 10 ms nn Figure D 1 Sample of correct sensitivity adjustment D 1 1 Improper Sensitivity Adjustments Setting the cylinder firing sensitivity is essential for the proper display of the secondary pattern e lf the sensitivity is set too high cylinder firings may not be detected and firing peaks may not get detected on multiple spark ignition systems e lf the sensitivity is set too low events other than the cylinder firings may be falsely detected as cylinder firings The following examples illustrate what happens when the Sensitivity Adjustments are set too high and too low 59 Using Sensitivity Adjustment When To Use Sensitivity Adjustment Sensitivity Set Too High Cylinder firings may not be detected consistently if the sensitivity setting is too high A blank space will display in place of a cylinder that is not detected Lowering the setting all
7. Scope Plug in to the test vehicle you can proceed with testing Button and menu option availability vary depending on your test selection When performing tests with the Multimeter the toolbars and controls work the same as those in the Scope 5 2 1 Changing Views The VIEW button lets you change the way data displays P To change screen views 1 Select View The dropdown menu displays Figure 5 2 mao Cs A Full Graph i Split Screen Y Figure 5 2 Sample Graphing Meter VIEW menu 2 Select Full Digital Full Graph or Split Screen which combines the display of graph and digital data The screen changes to reflect your selection 20 Multimeter Operations Performing Multimeter Tests 5 2 2 Pausing Data gt The Pause button stops data collection and lets you review data The screen can be paused at any time To Pause test screen data e Press the Pause button The displayed data is no longer being updated and the following three upper toolbar controls also change The Pause button replaces the Play button The Position Indicator displays in the Data Buffer The Review button is active The Zoom button replaces the Snapshot button To unpause test screen data e Press the Play button Live data displays and the toolbar controls revert to their original state Reviewing Data The Review button is used with the Thumb Pad to review paused data There are two ways to review data e Manually e
8. from the Setup button menu reduces the amount of ink used by your printer when printing files To print 1 Select the Print button A dropdown menu displays 2 Press Y v The screen prints according to your printer settings Refer to the MODIS Display User Manual for printer setup details NOTE Make sure the infrared transceiver on top of the MODIS unit is pointed at the infrared transceiver of the printer and there is nothing in between them 5 2 9 Using Setup gt The Setup button lets you change the way information displays To use Setup 1 Select the Setup button A dropdown menu displays 2 Select one of the following options Units Grid Scales Display Inverse Colors Save Data Units Selecting Units opens the Units dialog box Figure 5 5 which lets you change the displayed units of measurement for vacuum pressure and gas concentration 25 Multimeter Operations Performing Multimeter Tests gt Vacuum Pressure Concentration Display As kPa psi ppm Factory Default Factory Default Unite Division Full Scale Figure 5 5 Sample Units dialog box The Display As dropdown menu sets how the scale units are displayed on the Scale button and in the Channel Status area The Scale button on the lower toolbar displays the scale setting for the currently selected channel The Channel Status area at the top of the test portion of the screen displays the scale settings f
9. signals going in both positive and negative directions e Filter minimizes unwanted noise in the Graphing Meter To display Channel Two 1 Select the Channel Number button from the Channel control bar The channel setup menu displays 2 Select Ch 2 gt Displayed The Channel Two trace displays 3 Press N X to close the menu To change the channel setup 1 Select the Channel Number button from the Channel control bar The channel setup menu displays 2 Select the channel you want to change Ch 1 or Ch 2 3 Select the Peak Detect or Filter channel setup option see When To Use Peak Detect on page 48 and When to Use Filter on page 54 for details Probe The Probe bution lets you select a different test To select a different test 1 Select the Probe button The Probe menu displays 2 Select an option The Probe button changes to indicate your selection Scale The Scale button lets you select a measurement scale for each channel P To select a measurement scale 1 Select the Scale button to open the Scale menu 2 Select an option The Scale button and the waveforms on screen change to reflect your selection 28 Multimeter Operations Performing Multimeter Tests Signal Zero Offset The Signal Zero Offset button moves the zero 0 position of the selected channel up or down P To move a zero position 1 Select the Signal Zero Offset button The button appears depressed and highlighted to ind
10. 4 cylinder engine 100 90 deg 360 4 100 psi Vacuum Measures engine vacuum 0 20 inHg using the 0 100 PSI Transducer 00 Her Pressure Measures fuel systems engine oil and transmissions using the P 0 100 PSI Transducer 500 psi Pressure Measures transmissions compression and AC high side p pressure using the 0 500 PSI Transducer l Measures ABS power steering and heavy duty hydraulic A Ponle systems using the 0 5000 PSI Transducer 19 Multimeter Operations Performing Multimeter Tests 5 1 2 Digital Meter 9 2 Selections from the Digital Meter menu configure your Lab Scope Plug in to function as a Digital Volt Ohm Meter DVOM Table 5 2 describes the test options available Table 5 2 Description of Digital Meter test options Volts DC Measures direct current voltage GND and CH1 Volts DG Average Measures direct current and uses a filter to remove excess noise 9 hash on the signal GND and CH1 Volts AC rms Measures the effective voltage rather than the Peak or Average voltage GND and CH1 Measures electrical resistance CH3 and CH4 Diode Continuity o voltage drop across a diode or continuity CH3 and Measures current from components like ignition coils injectors Low Amps 20 fuel pumps and parasitic draw using the Low Amp Probe GND and CH1 Low Amps 40 Measures current from components like fans and electric motors p using the Low Amp Probe GND and CH1 Performing Multimeter Tests After connecting the Lab
11. 6 3 4 Deleting Presets The Delete button deletes preset files from system memory 43 Scope Operations Using Presets P To delete presets 1 From the main menu select Scope gt Preset The Preset Management screen displays Highlight a preset from the list Select the Delete button A confirmation message displays Permanently remove the preset from memory by pressing Y v After processing your delete request you are returned to the Preset Management screen 6 3 5 Copying and Moving Presets The Copy and Move buttons let you change the storage location of your custom presets These functions require the use of a CF card in the top slot Copy and move presets go to the inactive CF card which is the CF card that files are not being saved to For example If you designate the Top CF as your Save To storage memory preference when you use the Copy and Move buttons your selected preset goes to the Internal Memory P To copy or move data 1 2 7 Insert a CF card in the top slot not supplied From the main menu select Scope gt Preset The Preset Management screen displays From the upper toolbar select Setup The Save Data dialog box displays Select from the Save To options and then press N X to close the dialog box This will be the storage memory you will be viewing and copying or moving presets from When selecting a file from the list on screen use the up A and down Y arrows When selecti
12. Automatically To manually review data 1 Select the Pause button 2 Select the Review button 3 Use the right and left lt arrows to review data one frame at a time 4 Use the up A and down Y arrows to review data a fraction of a frame at a time when possible NOTE You can not review fractions of frames in the Ignition Scope To automatically scroll paused data 1 With the Review button selected press Y v again to display the menu of scroll options 2 From the Review menu select an option Auto Scroll Fast automatically scrolls the data on screen at full speed Auto Scroll Slow automatically scrolls the data on screen at half speed 3 Press N X to close the menu The Position Indicator displays the position of the current frame Zero denotes the frame when the button was pressed Frames captured before pausing are negative frames captured after are positive 21 Multimeter Operations Performing Multimeter Tests 5 2 3 Using Zoom The Zoom button lets you choose a macro view of the data and appears in place of the Snapshot button when the display is paused P To zoom the view of paused test screens 1 Select Zoom A dropdown menu displays 2 Select an option from the menu The screen changes to reflect your selection and the on screen Zoom Cursor Line displays 3 To see a point of interest in detail a Select Review b Use the left and right gt arrows to move the Zoom Cursor L
13. B keyboard 43 view options 20 full digital 20 full graph 20 split screen 20 Volts AC rms 20 Volts AC RMS 19 Volts DC 19 20 32 Volts DC Average 19 20 W weight plug in 11 zoom 22
14. MOD LS Lab Scope Plug in User Manual September 2010 EAZ0007E07G Rev A Trademark Acknowledgments Snap on Fast Track Scanner and MODIS are trademarks of Snap on Incorporated All other marks are trademarks or registered trademarks of their respective holders Copyright Information 2010 Snap on Incorporated All rights reserved Disclaimer The information specifications and illustrations in this manual are based on the latest information available at the time of printing Snap on reserves the right to make changes at any time without notice Visit our website at www snapon com solus North America snapondiag com Europe sun diagnostics com Europe For Technical Assistance CALL 1 800 424 7226 North America CALL 44 0 845 601 4736 United Kingdom E mail DiagnosticsUKproductsupport snapon com United Kingdom For technical assistance in all other markets contact your selling agent Safety Information For your own safety and the safety of others and to prevent damage to the equipment and vehicles upon which it is used it is important that the accompanying Safety Information be read and understood by all persons operating or coming into contact with the equipment We suggest you store a copy the book near the unit in sight of the operator This product is intended for use by properly trained and skilled professional automotive technicians The safety messages presented throughout this manual are remi
15. Sweep setting is increased the firing voltage may be observed to decrease in height and vary more than usual and the peak firing voltage will not be captured consistently Figure B 2 112707 0304 Figure B 2 Sample 10 ms Sweep Peak Detect off At longer sweeps the sample rate is slower and the peak firing voltage or the entire firing can be missed if it happens between samples Figure B 3 BB ve OO Ge EE gesla Figure B 3 Sample 10 ms Sweep Peak Detect off When Peak Detect is on the firings will be displayed regardless of the Sweep because the scope is sampling at the maximum rate The longer the Sweep the more useful Peak Detect can be 49 Using Peak Detect When To Use Peak Detect Figure B 4 illustrates a Firing Peak captured at a 10 ms Sweep rate Compare this illustration with Figure B 3 on page 49 Helm E aor Sl gas eror 0305 2 Figure B 4 Sample 10 ms Sweep Peak Detect on B 1 2 Example Testing a TPS for Glitches With a sweep of 5 or 10 seconds typically used for testing a throttle position sensor TPS the sample rate is relatively slow When a sweep is longer the sample rate is slower which increases the chance that a glitch can be missed because it occurred in between samples Figure B 5 illustrates a TPS glitch not captured cnt vois MEN ot e707 03193 o Figure B 5 Sample Slow Sweep TPS Glitch not captured To increase the chance of capturing a glitch w
16. according to the channel it represents displays in the graph area When the Cyl trigger is selected a white plus sign displays along the bottom of the graph area which represents the point in time a cylinder is detected on the RPM lead When you are finished setting the trigger modes press N X to close the menu Trigger Slope The Trigger Slope button selects the direction the waveform must be going rising or falling when crossing the trigger point NOTE This button is only available when a Channel is the active trigger type Trigger Position The Trigger Position button is used for moving the trigger point for a specified channel either along the X horizontal or Y vertical axis of the display NOTE This button is not available when None is the active Trigger type To move the trigger point 1 Select the Trigger Position button The trigger point marker becomes active 40 Scope Operations Using Presets 2 Use the Thumb Pad to move the on screen marker and select a new Trigger point 3 When you are finished press N X 6 3 Using Presets A preset is the configuration of your screen setup The Presets option gives you access to all of your custom presets and factory installed presets for commonly tested components Custom presets can be saved from any of the Scope tool Save menus See Saving Data on page 36 for more details The Presets Management screen Figure 6 5 displays a list of all the
17. al for viewing alternator ripple or fuel pump amps This blocks the DC portions of an input Signal in order to amplify the AC portions without driving them off the center of the screen e Auto Find picks the best scale to fit the selected signal pattern on the screen If run on the same channel as the trigger the trigger level is set halfway between the minimum and maximum values of the waveform NOTE O When testing with the Single Cylinder Ignition scope the Channel 1 Peak Detect option cannot be turned off Probe The Probe button lets you select a different test NOTE Calculated measurement tests are only available in the Graphing Meter Refer to Probe on page 28 and Ignition Scope Probe on page 33 for more details 6 2 5 Displaying Triggers Use the Display Trigger control bar Figure 6 4 to set the criteria to start the display of data Figure 6 4 Sample Display Trigger control bar 1 Trigger Type 2 Slope 3 Trigger Position Trigger Type Selecting Trigger Type lets you set the criteria used to start the display of data Available Trigger Type menu options include e None displays data as fast as it is received e Ch 1 2 3 4 triggers the display based on the signal from the selected channel Available submenu options include Auto updates the screen when the signal crosses the trigger threshold in the selected direction rising or falling Even if the signal does not cross the tr
18. available presets Y E y eam Vs KTE Flisic 03204 11 44 03 02 04 11 44 030204 11 43 002 04 41 43 03 0204 11 43 03 02 04 11 43 0302 04 11 43 03 02 04 11 42 03 02 04 11 42 03 02 04 11 42 03 02 04 11 41 03 0204 11 41 0302 04 11 41 03 02 04 11 40 i File Name Alternator Diode Ripple 600m Alternator Diode Ripple 24 Gnd Injs and Solnds Pwr Injs and Solnds LO Freq AC Signals HI Freq AC Signals LO Freq Dig Signals HI Freq Dig Signals 2 Ch 10VDC S0ms 02 sensor 10 sec 4 Ch 5VDC 10ms Fuel Pump 24 100psi Chi 02 Ch Inj Amps LO Amps 20 Figure 6 5 Preset Management screen sample 1 Top slot CompactFlash card indicator Displays which CF slot is selected in Setup The left icon is the Top CF slot and the right icon is Master CF slot Internal The Top CF slot icon will be crossed out if there is no card in the slot when it is the selected destination 2 Internal memory indicator Refers to the Master CF card in the side slot The check mark indicates the active status 3 Memory usage indicator Indicates the remaining storage capacity for the active storage memory NOTE O Factory installed presets which are identified by a lock icon in the Type field cannot be edited deleted copied or moved See Presets on page 36 for information on saving a preset The Preset Management screen has the following upper toolbar buttons e Load opens an active test screen with the selected pres
19. ca V Chapter T Using TAIS Manuals E utara aaa aE 1 CONVENIOS sind liinda iio doce tones 1 o A ans ead ok 1 AE OLOR Io ER II ee ae een ene eee ee 1 TST OLOGY ar acia 2 Note and Important Messages cccccseeccceeeeecseeecseececeeeeecsaeeseeuceeseaeeessaesessueeeseeeeesseeeeens 2 A A arrears enero re oP eer oe ee eee 2 A eee 3 A PA A a a OE 3 Chapter 2 Getting Started cursada ia 4 POWERING the MODIS O ratico 4 Connecting Leads and Adapters oooccccccconcnccconccononnnncnnnnnncnnnonnnnnnnnnancnnnonnnnnnnnnnnrnrnnnnrnnnnnnrnnnonnnnos 4 Channel Onc AA di nalauatendesterdecei en a a a N a vatetieeeerts 4 Channel Two Lead 2 2253 athens sa nehcares te ie dtanttacteaaaasaeaiy 5 Channel Three Le lia ci 6 Channel Four Lead cccococcccccccncccccncconcnnccnnnnononnnnnncnnnnnnnnnnonnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnonnnnonannnnnnnes 6 secondary Coil Adapter Le ad da ences 7 Inductive ARMIPICK Ad id 8 Chapter Se Introducir nta da 9 Functional DescriplO A iria a inicias 10 PEC ICAlSOCCIICAUONS ii neon aoi 10 a 11 Leads Probes and Adapter Sci A A A 12 Ar A A ee en ae 12 Channels yc c Liar ener mee nee rence a a eee er ere 13 Sila Pe te erent ren A eee 13 Channels Led near ee ne ee et ee oe eee eee ee 13 PG ALOE GOS acct PEACE aacet ate ietnuntcen maiuuin a EE S 13 Test Probe On PO RT eT diecuz 14 Secondary Coil Adapter Lead ooocccconnccnccccncncccnonconcononcnnonnnnnnnonnnncnnnnnncnnnonnnnrnnonanennnonanennnss 14 Secondary I
20. displays 2 Highlight a preset from the list 3 Select the Load button A scope screen displays with your selected preset configuration 6 3 3 Editing Presets The Edit button lets you edit presets in the following ways 42 Scope Operations Using Presets e Add notes e Change filename NOTE A USB keyboard not supplied is required to edit presets P To edit a preset 1 From the main menu select Scope gt Presets The Preset Management screen displays 2 Connect a USB keyboard to the USB port on top of the MODIS unit 3 Highlight a preset from the list 4 Select the Edit button The Edit Preset Name And Note dialog box displays NOTE The Notes and Name icons are not active if a keyboard is not plugged in 5 Select Notes The Additional Information section activates Figure 6 6 Edit Preset Name And Note Additional Information 7 lines ma ximum ESC to finish With a USB Keyboard connected enter information he rel Figure 6 6 Sample Note selection 6 Using your keyboard type a text note 7 lines maximum then press Esc to exit the Additional Information section 7 Select Name The File Name field is now active 8 Using your keyboard type a file name then press Esc to exit the File Name field NOTE If you do not provide a file name a name is automatically created for you 9 Select Save After processing your edits you return to the Preset Management screen
21. dule and stage of operations Table 4 1 Table 4 1 Upper toolbar controls part 1 of 2 ame Bon ese OO Ei vew Lets you change the way data displays Stops data collection and lets you review the buffered data 15 Navigation Screen Layout Table 4 1 Upper toolbar controls part 2 of 2 IT Pla g Continuously captures data and stores it in the Data Buffer uh Lets you make digital amplitude frequency and time measurements Lets you adjust how the paused data scrolls eview ae on screen for reviewing Lets you capture data when a problem occurs Snapshot ao while driving and when you want to capture Sa data before and after a problem occurs Zoom ee Lets you change the magnification of the Eh A paused data R vA Lets you clear the Min Max data for all digital eset 0 nes ES gauges Lets you change the way information appears Setup Ea on screen and enter vehicle system information Data Buffer The Data Buffer is located just below the upper toolbar buttons and indicates how much test data is stored When the screen is paused the position indicator displays the current frame number and the amount of data on the screen relative to the total data captured The Data Buffer cannot be highlighted or selected 4 1 2 Main Body The main body of Lab Scope Plug in test screens displays the following
22. e Graphing Meter the filter minimizes noise by ignoring or smoothing out fast spikes Calculated Measurements When you conduct a calculated measurement test frequency pulse width MC Dwell Or Duty Cycle the filter is used so that very fast spikes 20 uS and faster from sources like the ignition system can be ignored Figure C 1 illustrates noise from the ignition system when conducting the Graphing Meter Frequency test with Peak Detect on and Filter off 54 Using Noise Filter When to Use Filter Figure C 1 Sample of Frequency with Filter off Figure C 2 illustrates the noise filtered out when conducting the same test with the filter on w Displayed y Peak Dete ct Figure C 2 Sample of Frequency with Filter on Direct Measurements When you conduct a direct measurement test in the Graphing Meter Volts Amps or Pressure the filter minimizes the display of very fast spikes by averaging the data When used together Filter and Peak Detect balance capturing glitches and minimizing noise 55 Using Noise Filter When to Use Filter Figure C 3 illustrates Peak Detect on and Filter off during a TPS Sweep with the key on and engine off KOEO Channel Figure C 3 Sample Noise Filter off TPS Sweep KOEO Figure C 4 illustrates Peak Detect on and Filter on during a TPS Sweep with the key on and engine off KOEO 500 Widiv al Figure C 4 Sample of Noise Filter on TPS Sweep KOEO Figure C 5 i
23. econdary coil adapter lead and pickups 100 psi Vacuum Measures engine vacuum 0 20 inHg using the 0 100 PSI Transducer l Measures fuel systems engine oil and transmissions using the 0 100 100 psi Pressure PSI Transducer 500 psi Pressure Measures transmissions compression and AC high side pressure p using the 0 500 PSI Transducer Measures ABS power steering and heavy duty hydraulic systems 9000 psi Pressure Using the 0 5000 PSI Transducer 6 1 2 Ignition Scope The Ignition Scope module configures the MODIS unit to view a secondary waveform using preset ignition pattern display options e Parade e Cylinder e Raster e Superimposed e Single Cylinder Ignition Each of these options are explained in Ignition Patterns on page 33 Connecting to all cylinders of an engine at the same time simplifies cylinder comparison in the following ways e All cylinders can be viewed at once Scope Operations Selecting Scope Software e Eachcylinder is displayed once per screen in firing order and is displayed in the same location on screen e The same pattern is displayed regardless of engine RPM The Ignition Scope requires the use of two leads e Secondary Coil adapter to display the secondary waveform e Inductive RPM Pickup adapter to identify cylinder number one for proper cylinder order display Refer to Connecting Leads and Adapters on page 4 for more details e RPM can be calculated from either the gray Inducti
24. ect the Inductive RPM Pickup adapter to the Lab Scope Plug in See Using the Split Lead Adapter on page 45 for more details 2 Connect the Inductive RPM Pickup adapter to the DB9F plug of the Split Lead adapter 47 Using Peak Detect Peak Detect is used to capture fast events spikes and glitches for signals going in positive and negative directions See Adjusting Channel Settings on page 27 and Adjusting Channel Settings on page 38 for more B 1 When To Use Peak Detect The following section explains when you might want to use Peak Detect and how it works When Peak Detect is off the scope collects just enough data to plot a waveform across the screen This is the standard mode of operation for many scopes Example If the Sweep setting is 10 seconds and the screen was 100 points wide the sample rate would be 10 times a second If the Sweep setting is decreased to 1 second the sample rate would increase to 100 times a second When Peak Detect is on the scope samples at the maximum rate possible and captures more sample points than needed to plot the screen This lets you catch a fast event or glitch B 1 1 Example Testing Secondary Ignition At a Sweep setting of 1 ms Figure B 1 firing voltage will be captured even if Peak Detect is off the sample rate is relatively fast at this time setting Figure B 1 Sample 1 ms Sweep Peak Detect off 48 Using Peak Detect When To Use Peak Detect As the
25. elect Setup gt Ignition System The Ignition System dialog box displays 2 Select the Ignition System values as needed 3 Press N X to close the dialog box Trigger Display Selecting Trigger Display turns on the Trigger position values located in the bottom right corner of the test area When Trigger Display is not selected trigger position values only display when the trigger position button is selected on the lower toolbar P To display trigger values e Select Setup gt Trigger Display The Trigger values display in the bottom right corner of the test area 6 2 4 Adjusting Channel Settings The Channel control bar Figure 6 3 lets you adjust Lab Scope channel settings and viewing characteristics for the selected trace Figure 6 3 Sample Lab Scope Channel control bar 1 Channel Number 2 Probe 3 Scale 4 Signal Zero Offset 5 Raster Spacing Channel Number The Channel Number button lets you select channel options There are four channels available for use in the Lab Scope In addition to Displayed and Peak Detect explained in Adjusting Channel Settings on page 27 Lab Scope also includes e Inverted flips the selected waveform upside down This is typically used when testing secondary ignition or displaying waveforms from the Low Amps Probe 38 Scope Operations Performing Scope Tests e Coupling AC subtracts the average value of a waveform to see small variations which is ide
26. et settings 41 Scope Operations Using Presets e Edit lets you change the file name of a preset and add text to the note field e Delete removes the selected preset from the active storage location e Copy lets you copy the selected preset to the inactive storage memory e Move lets you move the selected preset to the inactive storage memory e Select All lets you select all of the files e Setup provides a shortcut to the Save Data utility dialog box that lets you set the location where presets are saved P To open the Preset Management screen e From the main menu select Scope gt Presets The Preset Management screen displays P To exit the Preset Management screen e Press N X to return to the main menu 6 3 1 Identifying Saved Presets Saved presets have the following characteristics e Type is represented as a three letter identifier such as LS C where LS represents the module source Lab Scope and C represents the kind of captured data Configuration Preset source identifiers include LS Lab Scope IS Ignition Scope e Size is the percentage of available storage space used e Date Time is the date and time that the preset was saved e File Name is the name given when the preset was saved 6 3 2 Loading Saved Presets The load button opens an active test screen with the selected preset P To load a preset 1 From the main menu select Scope gt Presets The Preset Management screen
27. etting was too low B a 155 ae lee Figure D 6 Sample of sensitivity adjustment set too low D 2 Some Common Ignition Problems This section explains how to set the sensitivity level properly when you encounter some common ignition system problems D 2 1 Example Vehicle With A Shorted Spark Plug Figure D 7 illustrates inaccurate cylinder firing detection on a vehicle with a carbon fouled spark plug The spark plug on cylinder 3 was severely carbon fouled In the illustration the detection sensitivity level is set too high and the cylinder is not being detected consistently Sweep Figure D 7 Sample sensitivity set too high 62 Using Sensitivity Adjustment Some Common Ignition Problems Decreasing the detection sensitivity to 1 5 kV as illustrated in Figure D 8 results in the consistent detection of the shorted cylinder Grew OO a ieee reser lit o AA era af Parsms or Figure D 8 Sample shorted spark plug detected D 2 2 Example Vehicle With A Coil Not Firing Figure D 9 illustrates cylinder firing detection on a vehicle with the 6 3 coil not firing Lowering the detection sensitivity will not help because there are no firings from the 6 3 coil to detect Figure D 9 Sample 6 3 coil not firing and not detected 63 Using Sensitivity Adjustment Some Common Ignition Problems The actual cylinder spacing can be seen by changing to the 200 ms fixed time sweep and vi
28. ewing the raw waveform on channels 1 and 2 The cylinder spacing long short long short verifies a coil is not firing Figure D 10 Figure D 10 Sample raw waveform of coil not firing 64 Index Numerics 100 psi Pressure 19 32 100 psi Vacuum 19 32 4 Ch Lab Scope 32 500 psi Pressure 19 32 5000 psi Pressure 19 32 A alligator clips 13 auto scroll 21 aux port 10 B bold text 1 C cables 12 14 channel 1 12 channel 2 13 channel 3 13 channel 4 13 connecting 4 7 inductive RPM pickup 14 secondary coil adapter 14 secondary ignition clip on wire adapter 14 capabilities hardware 11 channel 1 socket 10 channel 2 socket 10 channel 3 socket 10 channel 4 socket 10 channel control bar 27 channel number 27 common ground socket 10 connecting cables 4 7 channel 1 4 channel 2 5 channel 3 6 channel 4 6 pressure transducer 45 47 secondary coil adapter 7 cursors 22 D deleting data 43 digital meter 13 20 dimensions plug in 10 Diode Continuity 20 display as 26 display trigger 39 40 dual graphing meter 19 Duty Cycle 19 DVOM 10 and digital meter 20 connection location 10 F filter 53 54 58 Frequency 19 fuse 11 G grid 26 ground socket 10 H hardware overview 10 12 ignition patterns 33 Ignition Probe 32 ignition scope 32 34 ignition system 37 inductive RPM pickup adapter 14 Injector Pulse Width 19 inverse colors 27 lab scope 32 leads See test leads loading data 42 Low Amps
29. g Multimeter Software 5 1 1 Graphing Meter Selections from the Graphing Meter menu configure your MODIS unit to function as a color graphing meter Table 5 1 describes the test options available Table 5 1 Graphing Meter test options Dual Graphing Meter Displays two channels automatically Volts DC Measures direct current voltage Measures direct current and uses a filter to remove excess noise Volts DC Average hash on the signal Volts AC rms ae the effective voltage rather than the Peak or Average Frequency Measures the number of times a signal repeats itself per second Pulse Width Measures the on time of various components Injector Pulse Width Measures the on time of the signal that activates the fuel injector Measures the ratio of the pulse width to the complete cycle width Duty Cycle the on time of components that cycle on and off like EGR or canister purge from 0 100 Low Amps 20 Measures current from components like ignition coils injectors fuel pumps and parasitic draw using the Low Amp Probe Low Amps 40 Measures current from components like fans and electric motors i using the Low Amp Probe Measures carburetor Mixture Control Solenoids 0 60 The duty MC Dwell 60 cycle of the solenoid is expressed in the dwell angle of a 6 cylinder engine 100 60 deg 360 6 Measures fuel system Mixture Control Solenoids 0 90 The MC Dwell 90 duty cycle of the solenoid is expressed in the dwell angle of a
30. gnition Clip on Wire Adapter ccooonncncccocccnnccconcncnconccnnonnnncnnnononcnnonnanencnnnanonnnos 14 Inductive REM Pickup Adi a a a a woh cee a a A eetetlere tees 14 Chapter 4 Navigatio Msas a a 15 oee Lavoe 15 UPS EOI o les Ea 15 MAINE a lodo 16 Table of Contents LONGT OOD A a a iS ss 16 MAKING Selector a 17 Chapter 5 Multimeter Operation Sivuscvavamia lidia 18 selecting Multimeter SOWA Enna E A E cnn noe nn raro nennrancnnano 18 Graphing METEL nesae eel edi 19 DIG Mal Metas 20 Performing Multimeter Tests sanar lor Io 20 CHANGING VIEWS enasi a ie heralded 20 is Lale LO A herds tet eet PU E UN onde onaetysaeneqneats 21 E tam caeddadeevnaaoncahh tamcele i sanveatesnte 22 VS WAS A O aeueenauaeat 22 TRAC AC NG DS MO Bs acicate 23 FUCSO UNG AUTOS dada cido 24 GD A A sc saeeesneretesneacsoaeentanse 24 PANINO ai a DA eantau e Ne 25 USO SU dt 25 Gallbra don NaClO ad is 27 Adjustind Channel Selma in cons 27 Seting the SWEEP Time isa ii bd 30 Chapter 6 Scope OperatloONS aisinn S aaa 31 oelectind SCOPE SONWANE ai iso 31 LID OCODE rosene a R 32 ONON OCOD eae o A A a 32 Pernornmngd Scope Mesias al a a EA 35 E a a ER a 35 SVP O E E eae er Oe eee 36 A O ee eee 36 Adjusting Channel SettingS occccoccccnccconccncnnnncnnnnnnncnnnononcnnnonanenonnnnnnnnnnnannnnnnnannnnnnnnennnnnnns 38 DISPIAVING HO eS aira ta daa 39 USO Pr dic 41 Identifying Saved Presets ii A A AA a ia 42 Loading caved PRESOS
31. guration for the selected tool See Selecting Scope Software on page 31 2 Connect test leads Connect appropriate leads and clips to the Lab Scope Plug in unit See Connecting Leads and Adapters on page 4 3 Connect the Lab Scope Plug in to the vehicle Procedures will vary Perform the test Set up test and evaluate test results See Performing Scope Tests on page 35 6 1 Selecting Scope Software There are two types of scope tools available e Lab Scope See Lab Scope on page 32 31 Scope Operations Selecting Scope Software e Ignition Scope See Ignition Scope on page 32 The following procedures explain how to select a scope tool P To select scope software 1 From the main menu select Scope gt Lab Scope or Ignition Scope 2 Select a test configuration 6 1 1 Lab Scope Selections from the Lab Scope menu configure your Lab Scope Plug in to function as a four channel display Table 6 1 describes the available test options Table 6 1 Lab Scope test configuration options Option Function 4 Ch Lab Scope Displays four channels automatically Volts DC Measures direct current voltage Low Amps 20 Measures current from components like ignition coils injectors fuel p pumps and parasitic draw using the Low Amp Probe Measures current from components like fans and electric motors using Low Amps 40 the Low Amp Probe Ignition Probe Measures secondary ignition system voltage using a s
32. hannel 4 lead iif Plug the red connector into the socket labeled CH4 2 Attach the right angled red alligator clip to the straight end of the lead 3 Connect the alligator clip end to the test vehicle as needed 2 2 5 Secondary Coil Adapter Lead P To connect the Secondary Coil Adapter lead 1 Plug the right angled black ground plug into the ground socket on the Lab Scope Plug in 2 Plug the right angled yellow connector into the socket labeled CH1 3 Connect the ground clip to a good vehicle ground 4 Connect the phono RCA plug into the clip on coil wire adapter or coil adapters as needed for the vehicle being tested NOTE If you need to extend the length of the ground clip using a jumper wire keep it as short as possible Getting Started Connecting Leads and Adapters 2 2 6 Inductive RPM Pickup Adapter Figure 2 6 Sample Inductive RPM Pickup adapter connection P To connect the Inductive RPM Pickup adapter 1 Connect the DB9F connector to the AUX port on the Lab Scope Plug in 2 Connect the RPM Pickup to the spark plug wire on cylinder number one Introduction The Lab Scope Plug in enables the following MODIS functions Component Tests Refer to your Component Tests User Manual for details Graphing Meter e Digital Meter e Lab Scope e Ignition Scope E A x aie fi f m i 7 rrr SEFEF YS ERA FEEFEE Fr Figure 3 1 MODIS Lab Scope Plug in Introductio
33. he exterior of the display device especially substances as gasoline brake fluid battery acid cleaning solvents penetrating oil or other chemicals Connect the ground lead black booted clip to a good ground source The negative battery terminal is the recommended ground connection When testing sensors actuators or other circuit components refer to the manufacturer s shop manual or the automotive repair manual for the proper test point s Because of the high speed data acquisition capability the Lab Scope or Graphing Meter should be used for glitch capture DO NOT position any cables where they can be trapped snagged stretched across sharp edges or pose any type of potential hazard DO NOT place tools or test equipment on vehicle fenders or other places inside the engine compartment Keep test leads away from sources of electrical noise such as the ignition system injectors and the alternator The shielded Channel 1 and 2 leads can be used to minimize unwanted noise and for testing high impedance circuits like oxygen sensor signals Using the Split Lead Adapter The Split Lead adapter is used to connect the Pressure Transducer and the Inductive RPM Pickup adapter to the Lab Scope Plug in Use the following procedure to connect the Split Lead adapter Figure A 1 to the Lab Scope Plug in To connect the Split Lead Adapter Connect the Split Lead adapter plug to the AUX port on the Lab Scope Plug in 2 Connect the banana pl
34. icate that the function is on Figure 5 7 FA ew l a maT S aala nan AAA of Sweep 10s Figure 5 7 Sample Signal Zero Offset selection VRT oa 2 Press the up A or down Y arrows as needed to move the zero point Figure 5 8 sep ma l Sweop cnt vos 5w Me tos Figure 5 8 Sample zero position e707 Ujta D 3 Press N X to exit the function 29 Multimeter Operations Performing Multimeter Tests Threshold The Threshold button changes the reference point on the waveform and is only used when calculating measurements such as frequency duty cycle MC dwell and pulse width There are two threshold options e Auto Threshold Select ATS automatically picks a threshold level in the middle of the range in which the waveform travels ATS defaults to a falling edge e Manual Threshold Select MTS lets you manually pick a signal level and direction to use as a reference point This is used if ATS picks a level that does not give the desired result To change the threshold level 1 Select the Threshold button The Threshold menu displays 2 Select an option To use the Manual Threshold option 1 Select Manual Threshold Select as described in the previous procedure The Manual Threshold Select dialog box displays Figure 5 9 Mama Thresbold Seleri E z Signal Min Threshold Signal Max Slope 2 E A Use arrows to adjust level and slope Press N when done Figure 5 9 Samp
35. igger threshold the screen automatically updates after a short period so you can see the waveform which lets you set a threshold to optimize viewing 39 Scope Operations Performing Scope Tests Normal updates the screen when the signal crosses the trigger threshold in the selected direction rising or falling If the signal does not cross the trigger threshold the screen will not update which lets you capture intermittent events because the screen only updates when the signal meets your trigger selection e Cyl triggers the scope from the RPM lead signal The lead detects the firing on the plug wire that the lead is connected to and the scope uses this signal to trigger the display You can only adjust the time offset for this type of trigger Auto updates the screen when the scope receives a signal from the RPM lead Even if the signal does not receive a signal from the lead the screen automatically updates after a short period so you can still see the waveform Normal updates the screen when scope receives a signal from the RPM lead If the scope does not receive a signal from the lead the screen will not update To select a trigger type 1 Select the Trigger Type button The dropdown menu displays 2 Select a cylinder triggering option With the exception of None a submenu displays 3 Select Auto or Normal from the submenu When a Channel trigger Ch1 4 is selected a plus sign colored
36. ine c Select Zoom gt 1x 5 2 4 Using Cursors The Cursors button lets you make digital amplitude frequency and time measurements of paused and live data P To use the cursors 1 Select the Cursors button Two vertical cursor lines display on screen A TIS Figure 5 3 Cursors sample screen 2 Press the right gt and left arrows to move the selected cursor line Press Y v to change the active cursor 4 Press N X when you are finished setting cursors A confirmation message displays asking how you want to proceed using cursors 5 Press Y v or N X as desired oo 22 Multimeter Operations Performing Multimeter Tests P To turn cursors off 1 Select Cursors 2 Press N X twice The cursor lines disappear 5 2 5 Taking Snapshots The Snapshot button lets you capture data before and after a problem occurs while driving P To take a snapshot 1 Select the Snapshot button A dropdown menu displays 2 Select Manual The Snapshot button blinks indicating that Manual Snapshot mode is armed 3 Press Y v to take a snapshot The Collecting Snapshot message displays indicating that Snapshot data is being collected When the Snapshot finishes saving a final confirmation message displays When the confirmation message disappears you are returned to the test screen with the blinking Snapshot button still armed 4 Press N X to disarm Snapshot NOTE The saved snapshot can be retrieved from Save Da
37. ion systems the sensitivity level setting only displays on Channel 1 but the setting applies to both channels See Using Sensitivity Adjustment on page 59 for usage details Missed Cylinder Detection When a cylinder firing is not detected because it is either firing too low to be detected at the current setting or is not firing at all a blank space displays in the on screen pattern P To verify a missed cylinder firing e Lower the sensitivity setting to verify that the cylinder is firing but firing too low to be detected at the current sensitivity setting If a cylinder is not firing at all the blank space on the graph will remain see Sensitivity Adjustment on page 34 for more details Digital kV View When using the ignition scope the Digital kV view selection available from the View button on the upper toolbar displays the digital kV readings corresponding to the selected channel of the ignition scope This provides another way to monitor the secondary ignition system When testing Wasted Spark ignition systems Power firings display on channel one and Wasted Spark firings display on channel two 34 Scope Operations Performing Scope Tests NOTE The digital values are only as good as the source waveform If there is a problem with the lead connection or set up and a stable waveform is not displayed the digital value may not be calculated correctly If problems are experienced with the digital values chec
38. ithout Peak Detect a shorter sweep is needed 50 Using Peak Detect When To Use Peak Detect Figure B 6 illustrates a TPS Glitch captured using a faster Sweep a a IE Ew 155 Chace ES 25 5 Vidiv ai OFF 42707 03 10a 21 Figure B 6 Sample Faster Sweep TPS Glitch captured Even if the glitch was captured with a sweep this short the glitch could easily be missed if you looked away for a moment or even blinked When Peak Detect is on the scope is sampling at the maximum rate a signal glitch can be captured using a longer sweep where it will be easy to see Figure B 7 illustrates a TPS Glitch captured using a 10 second sweep Compare this illustration with Figure B 5 on page 50 e707 03198 1 Figure B 7 Sample 10 Second Sweep TPS Glitch captured 51 Using Peak Detect When Not to Use Peak Detect B 2 When Not to Use Peak Detect Peak Detect puts the scope in a high speed sampling mode which can pick up and display unwanted noise from components such as injectors and solenoids B 2 1 Example Testing an Oxygen Sensor An Oxygen sensor 025 produces is relatively slow signal that requires a clean noise free pattern for diagnosis Peak Detect should be off when testing an O2 sensor because the waveform is much cleaner and easier to evaluate since less noise displays Figure B 8 TOT 03108 Figure B 8 Sample O2 waveform with Peak Detect off When Peak Detect is on more noise is pic
39. k lead connections and Ignition Setup If a measurement cannot be calculated dashes display in place of values Firing kV Spark kV and Spark Duration burn measurements are calculated from the secondary waveform e Firing kV FKV voltage required to overcome the rotor and spark plug gaps and establish a spark across the spark plug electrodes e Spark kV SKV voltage required to maintain a spark across the spark plug electrodes e Spark Duration Burn time the spark is maintained across the spark plug electrodes Min Max and current values for Firing kV Spark kV and Spark Duration are displayed as digital values for each cylinder in the firing order Intermittent problems that happen too fast to be seen on the live waveform will be captured in the Min Max reading making it possible to spot problems that can be difficult to see in the live waveform Multiple Spark Ignition Systems On vehicles with multiple spark ignition systems when more than one spark per cylinder is present Firing kV FKV is calculated at the start of the first soark and Spark kV SKV and Burn are calculated from the last spark P To calculate the Digital kV and Burn measurements e Select an ignition pattern with a 10 ms sweep such as Parade 10 ms or Cyl 10 ms when testing a multiple spark system IMPORTANT Digital kV cannot be correctly calculated if in the Ignition Scope view the end of the last spark for each cylinder is near the end of the sc
40. ked up which makes diagnosis difficult Figure B 9 Channel Chi Testlead MOT 0310 Figure B 9 Sample O2 waveform with Peak Detect on 52 Using Peak Detect Peak Detect and the Graphing Meter B 3 Peak Detect and the Graphing Meter The Graphing Meter uses a combination of Filter and Peak Detect modes Filter removes the unwanted ignition and other high frequency signals from the display which gives a better view of the signal of interest The combination of Filter and Peak Detect gives a good balance between detecting fast glitches and preventing unwanted noise from displaying The Noise Filter can be selected from the Channel Control bar as applicable For related information see the following sections e Adjusting Channel Settings on page 27 e Using the Filter with the Scope on page 57 53 Using Noise Filter If glitches are being detected and no vehicle problems are observed noise may be the cause As a precaution do the following e Use shielded leads e Route the leads away from secondary ignition components e Verify the test connections e If noise is still suspected to be a problem turn on the Filter See Channel Number on page 27 for procedures NOTE The Filter may also eliminate extremely fast glitches C 1 When to Use Filter The following sections explain when to use the filter with the Graphing Meter and the Scope C 1 1 Using the Filter with the Graphing Meter In th
41. l Meter Ohms and Diode Continuity tests A r Accuracy Comments n 4 Input Impedance 10 OMA ss Sample Rate Glitch capture Approximately 50 nn r Ranging 11 Capabilities Introduction Leads Probes and Adapters Table 3 3 Scope Range Accuracy Comments Channels Common grounds CH1 6 MSPS Continuous Sample Rate CH2 3 MSPS MSPS mega samples CH3 4 1 5 MSPS per second Bandwidth DC 3 MHz 3 db point 3 MHz Inout Impedance TOM DE All channels ia 5 8 kQ 3 MHz V dc Full Scale 100 mV 400 V V ac Full Scale Peak to Peak Voltage 100 mV 400 V 3 4 Leads Probes and Adapters The Lab Scope Plug in uses standard safety banana plugs that are compatible with many accessories Your kit comes with the various leads probes clips and adapters explained in this section See Connecting Leads and Adapters on page 4 for more information IMPORTANT When removing leads from their sockets do not pull on the wire because it can damage the leads Pull on the plug 3 4 1 Channel 1 Lead gt no a a Figure 3 3 Yellow Channel 1 Lead The shielded yellow lead is used for Channel 1 Figure 3 3 and other channel connections that need additional grounding The lead color matches the color of the CH1 socket on the Lab Scope Plug in unit and the trace color of Ch 1 on the test screens This yellow lead includes a black right angle common ground plug and a black stackable right angle c
42. le Manual Threshold Select dialog box The Signal Min and Max display to the left and right of the Threshold value for reference Measuring the Min and Max may take a few seconds 2 Change the Threshold value and the Slope as needed NOTE Threshold can only be changed to a value that is between the Min and Max of the signal 3 Press N X to exit the dialog box 5 2 12 Setting the Sweep Time gt The Sweep buiton sets the amount of time data crossed the screen from left to right To change the sweep time 1 Press the Sweep button The dropdown menu displays 2 Select an option NOTE Sweeps shorter than 1 second will collect some frames after the Pause button is selected The faster the sweep the more frames will be collected 30 Scope Operations This section explains the Scope menu and operations NOTE O Most of the Scope toolbars and controls work the same as the Multimeter Only the differences are covered in this section 5 ya Scope Ignition Scope 4 Ch Lab Scope Presets Volts DC Low Amps 20 Low Amps 40 Ignition Probe 100 psi Vacuum 100 psi Pressure 500 psi Pressure 5000 psi Pressure Figure 6 1 Scope selection from main menu The Scope menu offers the following options Figure 6 1 e Lab Scope e Ignition Scope e Presets The following is an outline of basic Scope software operation 1 Select Scope Software Select the type of Scope software and a test confi
43. linder firing order Wasted Spark The Inductive RPM Pickup connects to a plug wire on a wasted spark distributorless system Set the number of cylinders cylinder firing order and polarity Be sure the firing order and cylinder firing polarity values are correctly set up before using the Ignition Scope to test Wasted Spark systems Direct The Inductive RPM Pickup connects to plug wire if applicable on a direct ignition system Set the number of cylinders and cylinder firing order If connecting the inductive RPM lead to display RPM the lead can be connected to any plug wire that is accessible If using the Ignition scope the lead must be connected to the 1 spark plug wire so that the cylinders firings are displayed in the correct order Other The Inductive RPM Pickup connects to a plug or a coil wire Set the RPM factor appropriate for the test vehicle The Ignition System dialog box can also be accessed from the Utilities gt Tool Setup menu Refer to your MODIS Display User Manual for more information Inductive RPM Pickup Testing Tips When only the Inductive RPM Pickup lead is connected to display RPM the lead can be connected to any plug wire that is accessible When using the Ignition Scope the Inductive RPM Pickup lead must be connected to the 1 spark plug wire so that the cylinder firings are displayed in the correct order 37 Scope Operations Performing Scope Tests P To change Ignition System settings 1 S
44. llustrates Peak Detect on and Filter off during a TPS test The throttle was snapped with the engine running KOER Compare this with Figure C 6 taken under the same conditions but with the Filter on 56 Using Noise Filter When to Use Filter A A e ee A O gt Filter eee Channel Displayed Peak Detect Sweep vows sv ai tos Figure C 6 Sample Noise Filter on TPS Sweep KOER C 1 2 Using the Filter with the Scope In the Scope Filter smooths out spikes and fast variations in the waveform which provides a good balance between noise suppression and signal integrity and is most useful on scales of 5 volts and below The lower the volts scale the more likely noise could be a problem Testing an O2 sensor using a 1 or 2 volt scale or testing with an amps probe would be examples of when Filter might be used Due to the conversion factors used by the probes a very small volts scale is used to measure the output of the probe For a probe with a conversion factor of 100 mV A connected to a 2 amp load the scope uses a 200 mV scale to measure the probe output and then convert it to 2 amps for display on the screen 57 Using Noise Filter When to Use Filter In Figure C 7 2 low amps probes were connected to the same injector to compare the waveform with Filter on and off Channel Figure C 7 Sample Noise Filter two low amp scope probes Channel 1 uses the Filter and Channel 2 does not use the Filter
45. mount of ink used when printing screens Save Data Selecting Save Data opens the Save Data dialog box which is used to configure how data is saved This allows you to quickly reset save options without returning to the main menu 5 2 10 Calibration Indicator The cal LED in the lower toolbar indicates whether a channel is calibrated or not during Ohms Diodes Continuity or Pressure transducers testing The LED is e Green when calibrated e Red when not calibrated using previous calibration values When you select Ohms Diodes Continuity or Pressure transducers tests a message similar to the one below displays with instructions to assist you with the calibration process 5 2 11 Adjusting Channel Settings The Channel control bar Figure 5 6 lets you adjust channel settings and viewing characteristics Figure 5 6 Sample Channel control bar 1 Channel Number 2 Probe 3 Scale 4 Signal Zero Offset 5 Threshold Channel Number The Channel Number button lets you select channel options e Channel One Ch 1 is automatically displayed and cannot be turned off e Channel Two Ch 2 can be manually selected for display 27 Multimeter Operations Performing Multimeter Tests NOTE Both channels automatically display in the Dual Graphing Meter The following channel options are available e Displayed makes a channel s waveform visible e Peak Detect captures fast events spikes and glitches for
46. n Functional Description 3 1 Functional Description ie Figure 3 2 Top of MODIS unit and Lab Scope Plug in 1 Common Ground socket 2 Channel 1 socket Analog scope channel 3 Channel 2 socket Analog scope channel 4 Channel 3 socket Analog scope channel or DVOM minus lead 5 Channel 4 socket Analog scope channel or DVOM plus lead 6 Aux Port DB 9 PIN Female Connector Connection for an inductive RPM pickup or pressure vacuum probe s 7 Lab Scope Plug in slot 3 2 Technical Specifications Dimensions Height 7 1 2 inches 190 5 mm Width 5 3 4 inches 146 1 mm Depth 1 inch 25 4 mm 10 Introduction 3 3 Weight 8 1 oz 229 Y Fuse 5A Buss ATC Littleftuse ATO or equivalent Operating Temperature Range ambient At 0 to 90 Relative Humidity non condensing 32 to 104 F 0 to 40 C Storage Temperature ambient At 0 to 70 Relative Humidity non condensing 4 to 122 F 20 to 50 C Capabilities The following tables detail the MODIS Lab Scope Plug in capabilities oe 3 1 Multimeter Accuracy Comments ama rr rs Simultaneous 6 MSPS Continuous per channel 1 5 MSPS MSPS mega samples per second Bandwidth DC 3 MHz 3 db point 3 MHz Inout Im Input impedance omita Re All channels Input impedance p 5 8 KQ O 3 MHz Ve Fa Scale 75 V maxima V ac Full Scale Peak to 50 V maximum Peak Voltage Table 3 2 Digita
47. nders to the operator to exercise extreme care when using this test instrument There are many variations in procedures techniques tools and parts for servicing vehicles as well as in the skill of the individual doing the work Because of the vast number of test applications and variations in the products that can be tested with this instrument we cannot possibly anticipate or provide advice or safety messages to cover every situation It is the automotive technician s responsibility to be knowledgeable of the system being tested It is essential to use proper service methods and test procedures It is important to perform tests in an appropriate and acceptable manner that does not endanger your safety the safety of others in the work area the equipment being used or the vehicle being tested lt is assumed that the operator has a thorough understanding of vehicle systems before using this product Understanding of these system principles and operating theories is necessary for competent safe and accurate use of this instrument Before using the equipment always refer to and follow the safety messages and applicable test procedures provided by the manufacturer of the vehicle or equipment being tested Use the equipment only as described in this manual Read understand and follow all safety messages and instructions in this manual the accompanying safety manual and on the test equipment Safety Message Conventions Safety messages are
48. ng Copy or Move from the upper toolbar use the right gt and left arrows A confirmation message displays Press Y v to close the dialog box and return to the Preset Management screen P To verify the preset copied or moved 1 2 Leave the top CF card installed From the upper toolbar select Setup The Save Data dialog box displays Select from the Save To options and then press N X to close the dialog box When the Preset Management screen displays you should see the preset s that you copied or moved from your source storage memory 6 3 6 Selecting Multiple Presets The Select All button highlights all the presets so you can delete copy or move all of them at once 44 Testing Tips Keep the following information in mind when testing with the Lab Scope Plug in A 1 oe Tips A 2 Refer to the vehicle manufacturer test procedures and specifications before beginning a test When connecting an inductive pickup onto a spark plug wire make sure the jaws of the pickup are firmly seated Always make sure the test leads have clean tight connections When testing periodically check the external lead connections to make sure they are secure Never move the unit by pulling on the test leads Do not drive or roll a vehicle roll cab floor jack engine hoist etc over the test leads Never set anything on the display device that could spill on it and allow liquid to run into it Immediately clean any spills from t
49. nnect both of the alligator clip ends to the test vehicle as needed IMPORTANT When another lead requires a connection to the lab scope common ground socket connect its black common ground plug to the loose CH1 black stackable lead This method allows multiple common ground leads to be connected to the lab scope common ground socket It also avoids a stack of common ground plugs sticking up from the lab scope module Refer to Figure 2 2 Figure 2 3 and Figure 2 4 for details 2 2 2 Channel Two Lead Figure 2 2 Sample green lead connection P To connect the Channel 2 lead 1 So Plug the black ground plug of the Channel 2 lead into the stackable common ground plug of the Channel 1 lead This ground connection shields the Channel 2 lead Plug the right angled green connector into the socket labeled CH2 Attach the green alligator clip to the straight end of the Channel 2 lead Connect the alligator clip end to the test vehicle as needed Getting Started Connecting Leads and Adapters 2 2 3 Channel Three Lead Figure 2 3 Sample blue lead connection P To connect the Channel 3 lead 1 Plug the blue connector into the socket labeled CHS 2 Attach the right angled blue alligator clip to the straight end of the lead 3 Connect the alligator clip end to the test vehicle as needed 2 2 4 Channel Four Lead Figure 2 4 Sample red lead connection Getting Started Connecting Leads and Adapters P To connect the C
50. nnnnnns 59 When To Use Sensitivity Adjustment cccccooccnnccnccnnnccnoncncnnnncnnnnnnnnnnnnnnnnonnnnnnnnnnnnnnnnnononnrnnnonanans 59 Improper Sensitivity AQJUSTMENTS ooccccconccnnccconconnnnnconnconancnnnnnnnonnnnnannnnnnnnnnnnnnnnncnnnnnnrnnnnnnas 59 Some Common Ignition Problems usina A Sunnie elm Ace 62 Example Vehicle With A Shorted Spark Plug ccccoocccnccoccconcccocnncncononononononnonnanennnnnncnnnonanons 62 Example Vehicle With A Coil Not FiriNQ oocccnccconcnncccoccnnccnconcncnonoconnonnnncnonnnncnnonnancnnnonanons 63 MOEK acess A id 65 vii Using This Manual This manual contains tool usage instructions some of the illustrations shown in this manual may contain modules and optional equipment that are not included on your system Contact a sales representative for availability of other modules and optional equipment 1 1 Conventions 1 1 1 Bold Text Bold emphasis is used in procedures to highlight selectable items such as buttons and menu options Example e Press the Y v button 1 1 2 Symbols The following types of arrows are used The greater than arrow gt indicates an abbreviated set of selection instructions Example e Select Utilities gt Tool Setup gt Date The above statement abbreviates the following procedure 1 Navigate to the Utilities button 2 Use the Thumb Pad to navigate to and highlight the Tool Setup submenu 3 Use the Thumb Pad to navigate to and highligh
51. ommon ground plug 12 Introduction Leads Probes and Adapters 3 4 2 Channel 2 Lead SS OM Figure 3 4 Green Channel 2 lead The shielded green lead Figure 3 4 is used for Channel 2 The lead color matches the color of the CH2 socket on the Lab Scope Plug in and the trace color of Ch 2 on the test screens This green lead includes a stackable black right angle ground plug 3 4 3 Channel 3 Lead rrr Figure 3 5 Blue Channel 3 lead The non shielded blue lead Figure 3 5 is used for Channel 3 or Digital Meter minus The lead color matches the color of the CH3 socket on the Lab Scope Plug in and the trace color of Ch 3 on the Lab Scope test screen 3 4 4 Channel 4 Lead a OOO ED 1 Figure 3 6 Red Channel 4 lead The non shielded red lead Figure 3 6 used for Channel 4 or Digital Meter plus The lead color matches the color of the CH4 socket on the Lab Scope Plug in and the trace color of Ch 4 on the Lab Scope test screen 3 4 5 Alligator Clips Figure 3 7 Alligator clip Four insulated alligator clips are included and colored to match each test lead plus a black clip for the common ground lead Figure 3 7 Each clip plugs into the straight end of the channel leads 13 Introduction Leads Probes and Adapters 3 4 6 Test Probes Figure 3 8 Test probe Two test probes are included one black and one red Figure 3 8 and plug into the straight end of the test leads 3 4 7 Seconda
52. or all channels There are three Display As scale unit options e Units Division the scale value for a major grid division is displayed in the Channel Status Area and the Scale button e Full Scale the scale value for the whole grid is displayed in the Channel Status Area and the Scale button e Factory Default the Channel Status area displays the Units Division for all active channels and the Scale button displays the full scale value NOTE The Units dialog box can also be accessed from the Utilities menu located on the Tool Setup submenu as described in the MODIS Display User Manual To change units 1 Select Setup gt Units The Units dialog box displays 2 Change the unit values as needed 3 Press N X to close the dialog box Grid Selecting Grid displays the background grid pattern on all graphing test screens To turn the grid on e Select Setup gt Grid A grid appears in the test area Scales Display Selecting Scales Display displays the scale values on the graph To turn Scales Display on e Select Setup gt Scales Display The scale values appear along the X horizontal and Y vertical axis of the graph 26 Multimeter Operations Performing Multimeter Tests Inverse Colors Selecting Inverse Colors changes the color scheme P To change the color scheme e Select Setup gt Inverse Colors The color scheme changes to a lighter background with darker traces This selection reduces the a
53. ows the scope to detect the firings consistently Figure D 2 3 2 Channel Sweep Display Trigger Figure D 2 Sample missed cylinder detection NOTE If a cylinder is not firing at all tt cannot be displayed and remains a blank space on screen Multiple Spark Systems When testing a multiple spark ignition system if the sensitivity is set too high firing peaks can be intermittently missed and the Digital kV measurement does not calculate correctly Figure D 3 Figure D 3 Sample of missing peaks 60 Using Sensitivity Adjustment When To Use Sensitivity Adjustment Lowering the scope sensitivity captures all of the firing peaks consistently and calculates the Digital kV measurement correctly Figure D 4 CAE Sweep eae Par ms Sensitivity Set Too Low When other events are detected as cylinder firings the detection sensitivity may be set too low The setting should be increased until the ignition scope consistently detects each cylinder firing Figure D 5 illustrates the detection sensitivity level set at 500V which is too low because the start of Dwell is being displayed as the firing of cylinders 3 and 2 Figure D 5 Sample of sensitivity adjustment set too low 61 Using Sensitivity Adjustment Some Common Ignition Problems Figure D 6 illustrates another view of the secondary waveform and highlights the start of the dwell that was being falsely detected as a cylinder firing in Figure D 5 where the s
54. provided to help prevent personal injury and equipment damage All safety messages are introduced by a signal word indicating the hazard level Indicates an imminently hazardous situation which if not avoided will result in death or serious injury to the operator or to bystanders Indicates a potentially hazardous situation which if not avoided could result in death or serious injury to the operator or to bystanders Safety Information Important Safety Instructions Indicates a potentially hazardous situation which if not avoided may result in moderate or minor injury to the operator or to bystanders Safety messages contain three different type styles e Normal type states the hazard e Bold type states how to avoid the hazard e italic type states the possible consequences of not avoiding the hazard An icon when present gives a graphical description of the potential hazard Example Risk of unexpected vehicle movement A e Block drive wheels before performing a test with engine running A moving vehicle can cause injury Important Safety Instructions For a complete list of safety messages refer to the accompanying safety manual SAVE THESE INSTRUCTIONS Table of Contents Salte Into MA OM ui A a a aE iii Safety Message COnventiOns ccccccssssecccseeeccecaeeceeeceaueeceseaueeeseeaseeessaueceeeseaeeeesseeeessaaaeeessagess lil Mportant Salely INS trUciIONS a at A Kewanee iV Fable Ob COMENTS oaae a
55. reen or off of the screen 6 2 Performing Scope Tests When performing tests with the Scope the toolbars and controls work the same as those in the Multimeter The following explains the differences 6 2 1 Changing View The View button lets you change the way data displays P To change screen views 1 Select View The dropdown menu displays 35 Scope Operations Performing Scope Tests 2 Select an option from the menu The screen changes to reflect your selection 6 2 2 Saving Data The Save button lets you store data and scope settings P To save scope settings 1 Select Save The dropdown menu displays 2 Select a save option Save Movie This feature allows you to save up to 2000 frames of data buffered data plus data transmitted after triggering Save Frame This feature allows you to save up to 512 frames of buffered data data held in scan tool memory Save Preset This feature allows you to save the current scope settings as a preset Save Image This feature allows you to capture a single screen as an image Image files can be opened with common computer programs such as Microsoft Paint Presets A preset is the configuration of your screen setup preferences Saved presets can be used for later testing See Using Presets on page 41 for more information P To save a preset 1 Select Save A dropdown menu displays 2 Select Save Preset A confirmation message displa
56. ry Coil Adapter Lead mei E i A _ _ p inl _ LE l if F if A Figure 3 9 Secondary Coil Adapter lead The Secondary Coil Adapter lead Figure 3 9 connects to the clip on secondary wire adapter coil in cap adapter or coil on plug adapter to display secondary waveforms 3 4 8 Secondary Ignition Clip on Wire Adapter Figure 3 10 Secondary Ignition Clip on Wire Adapter The Secondary Ignition Clip on Wire Adapter Figure 3 10 connects the Secondary Coil Adapter lead to the vehicle Secondary wire to display ignition patterns 3 4 9 Inductive RPM Pickup Adapter Figure 3 11 nductive RPM Pickup adapter The Inductive RPM Pickup adapter Figure 3 11 connects to the AUX port with a DB9F plug to trigger a waveform or display RPM When used with the Ignition Scope it connects to cylinder number one to establish proper cylinder order 14 Navigation This section provides Lab Scope Plug in navigation information For detailed information on general MODIS navigation refer to the MODIS Display User Manual 4 1 Screen Layout The Scope screens Figure 4 1 include an upper toolbar a main body and a lower toolbar Available buttons and controls vary depending on the active mode and stage of operation Figure 4 1 Sample Lab Scope Plug in screen 1 Upper toolbar 2 Main body 3 Lower toolbar 4 1 1 Upper Toolbar The upper toolbar controls vary depending on the mo
57. t the Date option from the submenu 4 Press Y v to confirm the selection The solid arrows lt gt Y A are navigational instructions referring to the four directions of the Thumb Pad Example e Pressthe down Y arrow Using This Manual 1 1 3 1 1 4 Conventions Terminology The term select means highlighting a button or menu item using the Thumb Pad and pressing the Y Y button to confirm the selection Example e Select Reset The above statement abbreviates the following procedure 1 Navigate to and highlight the Reset button 2 Press the Y v button Note and Important Messages The following messages are used Note A NOTE provides helpful information such as additional explanations tips and comments Example NOTE For additional information refer to Important IMPORTANT indicates a situation which if not avoided may result in damage to the test equipment or vehicle Example IMPORTANT Do not force the CompactFlash card into the slot 1 1 5 Procedures An arrow icon indicates a procedure Example P To change screen views 1 Select View The drop down menu displays 2 Select an option from the menu The screen layout changes to the format you selected Using This Manual Additional Manuals 1 2 Additional Manuals Tools that work in conjunction with various hardware and software modules have separate manuals available for each of the modules 1 3 Tool
58. ta Refer to the MODIS Display User Manual for details Changing Snapshot Settings You can set up a snapshot in the following ways e Select the file type snapshot images can be saved as a bitmap or jpeg file e Adjust the percentage after trigger snapshots can be between 10 and 90 data captured after triggering e Save to different locations snapshots can be saved to the MODIS internal memory or to the CF card in the top slot P To change Snapshot settings 1 From the MODIS main menu select Utilities gt Tool Setup gt Save Data The Save Data dialog box displays Figure 5 4 Alter Trigger My data File Type fo Top CF AMP PEG Figure 5 4 Sample Save Data dialog box 23 Multimeter Operations Performing Multimeter Tests 5 2 6 Select the File Type dropdown menu Select a file type setting Select the After Trigger dropdown menu Select a After Trigger setting Press N X to close the dialog box Ol gt ee Resetting Gauges The Reset bution lets you clear the min max values recorded for all digital gauges Use the Reset button to e Track the variation in a component or circuit under a certain condition If the condition changes Reset lets you start tracking again to see the change e Verify that a connection problem you found by looking for a dropout or spike in min max values has been fixed To reset the min max digital values e Select Reset A confirmation message displays
59. tacked on top of each other The Single Cylinder Ignition option configures the MODIS unit to connect to an individual cylinder using a fixed time sweep when a lead is not available to connect to all cylinders Ignition Scope Probe The Channel One Ch 1 Probe button setting is restricted to Ignition Probe The Channel Two Ch 2 Probe button setting is not restricted and functions the same as in the Lab Scope See Probe on page 39 33 Scope Operations Selecting Scope Software Sensitivity Adjustment The Sensitivity Adjustment button at the far right of the lower toolbar lets you set the detection sensitivity to cylinder firings The lower the setting the more sensitive the ignition scope will be for detecting cylinder firing Adjusting the sensitivity and improve cylinder detection increases the range of vehicles that can be tested and the range of secondary pickups that can be used P To adjust cylinder firing detection sensitivity 1 Select the Sensitivity Adjustment button The button appears depressed and remains highlighted to indicate that the function is on 2 Press the up A or down Y arrows as needed to reposition the level indicator on the left of the graph x axis NOTE Unless you are having problems detecting cylinders a sensitivity setting of 2 0 kV is optimal for many ignition systems 3 When you are finished setting the sensitivity press N X to deselect the button NOTE With Wasted Spark ignit
60. tias cia ella 42 Editing PreSClS is Aa iia 42 Delega Presos darnos 43 Copying and Moving Prese Sii A cert cs 44 Selecting Multiple Presos coraisn a A 44 APpenalxA Testind IPS ia 45 o a cada 45 Wsing the Spit Leda Adapter oir ddr a 45 Connecting the Pressure Transducer cccccccccccseeececceeeceeeaeeeeesaaeeeeessaeceeseaaeeeessaaeessaaass 46 Connecting the Inductive RPM Pickup Adapter cccccocccnccccoccncccocccnnonconcncnononcnnononnenononanonnnos 47 Appendix B Using Peak Detect nnunnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nnmnnn mnnn nnmnnn 48 When TO WSe Peak Detecta E A ance 48 Example Testing Secondary lgnition ccccsscccccsssseecccsseeecceueceecceseeesseaueeesseseeeesseaseees 48 Example Testing a TPS for GIIICHES ccccoooccncconnnccconncnnncnnnoncncnnanononarononnrononannnnnancnnnnnos 50 When Notio Use Peak Detras ni ro iain eels 52 Example Testing an Oxygen SENSOL ccscccccccsssecccseeeceeceeeeeeeeeeeeecsaeaceseeeeeeeesseaeeessnaneees 52 vi Table of Contents Peal Delect and Ine Grapning MGTCL scsi a 53 Appendix C Using NOISE Eller iii a a a a e aE a a S aE 54 When to Use Plain ies 54 Using the Filter with the Graphing Metel cccccccsssseccceeeeeecseesseeeeeeseeesseaseesaeseeeesseaeeess 54 Using the Filter With Ine Scopare ewes 57 Appendix D Using Sensitivity AdjuStMent ooonnccconaniconanicnnnnccnncnnccnnncnennnnnennnnnrnannnnnnann
61. ugs to the Scope channels being used to display the signal 45 Testing Tips Using the Split Lead Adapter Figure A 1 Sample Split Lead adapter connection 1 Banana plugs 2 Split Lead adapter plug NOTE O The banana plugs typically connect to the Scope channel of the same color but can be plugged into any available Scope channel if necessary A 2 1 Connecting the Pressure Transducer The Pressure Transducer connects to the Lab Scope Plug in through the Split Lead adapter Figure A 2 Figure A 2 Sample pressure transducer connection 1 Split Lead adapter 2 Pressure Transducer 46 Testing Tips Using the Split Lead Adapter P To connect the Pressure Transducer 1 Connect the Split Lead adapter to the Lab Scope Plug in See Using the Split Lead Adapter on page 45 for more details 2 Connect the DIN plug end of the Pressure Transducer to socket 1 or 2 of the Split Lead adapter The numbers and colors match the channel on the unit A 2 2 Connecting the Inductive RPM Pickup Adapter The Inductive RPM Pickup adapter can connect to the Lab Scope Plug in through the Split Lead adapter Figure A 3 Figure A 3 Sample Inductive RPM Pickup connection 1 Split Lead adapter 2 Inductive RPM Pickup When the Split Lead adapter is not in use the Inductive RPM Pickup adapter connects directly to the AUX port DB9F on the Lab Scope Plug in P To connect the Inductive RPM Pickup adapter 1 Conn
62. ve RPM pickup adapter or the Secondary Coil adapter If only the RPM or Secondary Coil adapter is used RPM will be calculated from whichever lead is connected If both leads are connected RPM will be calculated from the gray Inductive RPM pickup NOTE O The optional SIA 2000 Adapter Kit is required to connect to multiple cylinders at once on Wasted Spark distributorless ignition systems Contact your sales representative for details Note the following regarding Ignition Scope synchronization e Synchronization to cylinder number one may take several seconds after the engine starts e Cylinder firings may be observed to change position during the synchronization process e If the Ignition Scope settings are changed cylinder synchronization reoccurs NOTE When testing Wasted Spark systems power firings will display on Channel One and wasted on Channel Two Ignition Patterns Four ignition pattern options are available to view and compare the secondary waveform for all engine cylinders e The Parade pattern displays the secondary waveform for each cylinder in the firing order from left to right across the screen e The Cylinder pattern displays the secondary waveform for the selected cylinder e The Raster pattern displays the secondary waveform for each cylinder in the firing order starting with cylinder number one at the bottom e The Superimposed pattern displays the secondary waveform for each cylinder in the firing order s
63. ys with saved preset retrieval instructions 3 Press Y v to close the confirmation message 6 2 3 Using Setup The Setup button on the upper toolbar lets you change the way information appears on screen See Using Setup on page 25 for information about the previously covered options Units Grid Scales Display Inverse Colors and Save Data The following sections cover the Lab Scope specific Setup menu options Ignition System and Trigger Display 36 Scope Operations Performing Scope Tests Ignition System Before ignition testing can begin the ignition system type and relevant parameters should be selected Selecting Ignition System displays the Ignition System dialog box Figure 6 2 that lets you select the following for the test vehicle Ignition Type Cylinders Firing Order 1 Trigger Inductive RPM Pickup connection Polarity RPM Factor Ignition Type Cyls Firing Order 1 Triqger 1 Trigger Coll connection is not used to view waveforms li is only for display of RPM when the 41 trigger ts connected to the coll wire Figure 6 2 Sample Ignition System dialog box The following ignition types and settings are available Standard Coil The Inductive RPM Pickup connects to the coil wire on a distributor system Set the number of cylinders and cylinder firing order Standard Plug The Inductive RPM Pickup connects to a plug wire on a distributor system Set the number of cylinders and cy

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