Chapter 4 - Keysight
Contents
1. mvt SP 1 USER MANUAL PROGRAMMING A BOARD 3D Action on Failure Menu Commands Menu Menu Functions Commands F2 orn This allows the user to scroll to the next error detected p This allows the user to return to the previous error F4 ori This allows the user to inspect an error F8 ore This enables the user to edit parameters associated with a particular device type x x allows the user to return to the Main User Menu This enables the user to scroll to the paste deposit on the left gt This enables the user to scrollto the paste deposit on the right if the paste deposit is the last on the scan then typing will bring the user to the first paste deposit on the next scan J This brings the user to the previous scanned row column of paste deposits T This brings the user to the next scanned row column of paste deposits F10 This allows the user to mark a false fail The above commands enable the user to scroll through the errors displayed in the graphics monitor The Graphics monitor displays a grey scale representation of the solder paste deposits with the vertical and horizontal height profiles of the paste deposits also displayed Set or disable image logging L from Solder Paste Menu L upper case will save images that are logged if a multiple inspection F3 from 3D Menu is performed Typing T lower case will in turn disable this from occurring Editing 3D Parameters amp Thresholds Typing2. Skip mode and then this can be toggled on off by pressing the a key during an inspection if Operator 2 or 3 An alternate SMEMA signal can be sent on a failed board Normally good boards close pins 3 amp 4 on the SMEMA downstream connector Bad boards can be changed to short pins 3 amp 8 when an Opto 22 output module is put into the 23 slot on the Opto 22 board in the rear electrical enclosure Setting Block Skip Parameters This feature can be used to save time by preventing the system from inspecting specific panels on a multi panel board The system can skip a panel if The user specifies which panel s should not be inspected The user sets the failure threshold at which the system should stop inspecting a panel The system detects if the block skip check mark has been blocked out The user muste edit the line bad_panel_detect d d d d d to set these thresholds Where the variables are bad auto_bad_panel block_skip_width grey thr block_leds bad is the amount of a PCB that must fail for all of the board to be considered bad Auto_bad_panel The user can specify which panels are bad the default value is 0 The system uses the block skips in the plx file to see if panels are bad Block_skip_width is the size of a side of the block skip check region in microns default 800 microns grey thr this the grey level above which a block skip is determined to be OK Ie if the mean grey level of the check region is b
3. e or F8 from the 3D Action on Failure Menu brings up the Paste Parameter Editor Menu Doc 5000 0032 02 Page 50 mvt SP 1 USER MANUAL PROGRAMMING A BOARD This menu enables the user to get a breakdown of how the nominal values are calculated In addition the upper Hi and lower Lo percentage thresholds for deposit failure are displayed A paste deposit will fail an inspection if after the inspection the SP 1 returns values lower than the lower threshold or higher than the upper threshold for area height or volume Technology ve loper S s z iting for Board Soft Inspected 8 PASTE PARAMETER EDITOR MENU Device lt pa 6263x1616 A solder paste device Pad amp PAGE Pad Pad z 166 Paste amp z 1616 Paste Y Paste z 86 Height F 186 Fill z 96 Thresholds Lo reaz Lo Ht Cum 126 Lo Vol z Hi Area z Hi Ht Cum 234 Hi Vol z Hor Ofs 266 Uer Ofs Fig 4 17 Paste Parameter Editor Menu Fill is the 3D fill factor It affects the volume calculation It is a measure of how the actual paste shape corresponds with the nominal paste shape rectangular and is used to account for non rectangular paste deposits The value is multiplied by the volume to compensate for the non rectangular deposit In the diagram below the Fill would be about 70 Nominal paste shane Actual paste shape Fig 4 18 Nominal vs Actual Paste Shapes Pad is the 2D fill factor Independent of Fill I
4. mvt SP 1 USER MANUAL PROGRAMMING A BOARD Chapter Programming a 4 Board 4 1 4 2 4 3 4 4 4 5 4 6 4 7 4 8 4 9 4 10 4 11 CHAPTER CONTENTS CAD Conversion Copying Plx File to CAD Directory Set PCB Type Putting the System into Soft Stop Setting Fiducial Position Procedure for setting fiducial positions Editing Fiducial Parameters Automatic Fiducial Editing Manual Fiducial Editing 2D Board Programming Perform a Local Inspection 2D Editing 2D Parameters amp Thresholds Explanation of 2D Parameters Editing the 2D Paste Algorithm Algorithm Results Explanation of 2D Device Thresholds Moving to Deposits 2D Remaking CAD Data 2D 3D Mode Programming 3D Scan Selection F5 from Solder Paste Menu Running a 3D Local Inspection 3D Action on Failure 3D Action on Failure Menu Commands _ Set or disable image logging L 1 from Solder Paste Menu _ Editing 3D Parameters amp Thresholds _ Running a GR amp R Test GR amp R Procedure _ 30 30 30 31 32 33 34 34 35 39 39 39 40 42 43 44 45 45 46 47 48 49 50 50 50 52 52 Doc 5000 0032 02 Page 28 mvt SP 1 USER MANUAL PROGRAMMING A BOARD SUMMARY This chapter describes the steps taken to program the machine to inspect a board It explains how and why to edit parameters and thresholds how to select deposits solve issues and verify that the board is programmed
5. ones selected are shown in green and those not selected in red ZNAI Be Help 9895 j82_1 Fig 4 14 Scans displayed on Graphics Screen The deposits can also be selected through the text screen a selects all deposits for 3D inspection c clears all previous scans selected p allows the user to select solder deposits for 3D selection by typing the reference designator of the parent component that is to be mounted on them This only works for Mentor CAD r the user types in the reference designator of the particular deposit to be scanned This works for Mentor and Gerber CAD Doc 5000 0032 02 Page 47 mvt SP 1 USER MANUAL PROGRAMMING A BOARD SP 1 Control SRT O3 Board Operator Status Inspected Status M U Technology motorola2 developer Waiting for Board 0 SPI SCAN SELECTOR EDITOR MENU to select all scans to clear all scans olx Skip parent reference designator to select full set of pins Mentor CAD only refence designator to be scanned Click on the graphics to zoom in on that section of the board then Click on a line to select it or deselect it Type z to zoom back out Finally x or ESC to return to 3D menu Fig 4 15 Scan Selector Editor Screen 4 9 Running a 3D Local Inspection Multi 3D Only Inspection F 3 from Solder Paste Menu This enables the user to perform multiple local inspections in which the SP 1 automatically locates fiducials Doc 5000 0032
6. correctly and Thresholds Remake 2D CAD 3D Scan Selection 3D Local Inspection 3D Action on Failure Run GR amp R Tests Edit Fiducial Parameters Check Algorithm Results Doc 5000 0032 02 Page 29 mvt SP 1 USER MANUAL PROGRAMMING A BOARD 4 1 CAD Conversion To begin programming a new board on the SP 1 its CAD must be obtained and converted into a format that the system can use Three options exist to generate the SP 1 data LJ Manually generate a file use plx file specification MVT document 5000 0040 U Convert a Mentor Graphics Neutral file MVT can provide a converter for this U Convert a Gerber file for the solder stencil layer GraphiCode s GC Place software is used and needs the Gerber file for the stencil or solder paste If the Gerber file is not extended Gerber then an aperture file is also needed If the Graphicode option is selected reference designators should be brought in GraphiCode software can import file with the reference designators and XY locations or can read the reference designators from a Gerber ink legend layer At the end of this step a plx file will exist Copying Plx File to CAD Directory The plx file should now be copied onto the SP 1 Using the Windows Explorer or similar file transfer program the file should be copied into the c cpi cad directory Set PCB Type Now the board can be selected see Select PCB Type
7. the config txt file must be set to allow auto fiducials SP 1 Error Message Fiducial 1 Error Score 6 Limit 766 F Retry Fiducial Inspection F2 Release Backwards Fi Release Forewards and Exit RY Table Menu Fiducial Editor Auto Train Fiducial rj wo p se ee ee ee ee Fig 4 2 Fiducial Inspection Error Message Press F5 and after approximately 10 seconds the correct fiducial parameters will be set and board inspection will start Note For the best results the cross hairs need to be on or inside the fiducial location when the failure occurs The fiducial parameters selected by the system may not be optimal Presence Value of 880 910 but will be well above the Presence Threshold usually 700 and will allow the inspection to continue Note The algorithm used by the system will handle circular rectangular diamond and cross shaped fiducials It will also determine whether top lighting is required Doc 5000 0032 02 Page 34 mvt SP 1 USER MANUAL PROGRAMMING A BOARD Manual Fiducial Editing The Fiducial Editor Menu F7 option from the Database Menu allows the fiducial parameters to be accessed and edited Alternatively the fiducial parameters can be edited by selecting the F4 option in the Fiducial Inspection Error Message 3 SP 1 Control EDITOR MENU F3 Disp View F4 Green TEMPLATE SIZE TEMPLATE SIZE Blue INNER X RADIUS 2 INNER Y RADIUS Red OUTER am
8. 02 Page 48 mvt SP 1 USER MANUAL PROGRAMMING A BOARD 4 10 3D Action on Failure After a 3D inspection the following menu is automatically displayed if errors were detected However if the SP 1 is set up to operate in 2D 3D mode then typing x after the 2D Action on Failure menu is displayed will bring up this menu This can also be viewed by pressing F6 from the 3D Solder Paste Menu SP 1 Control Status Technology loper Waiting for Board Soft u 63 14 This is error 1 of Error Type Volume Presence C 837 Nominal Height 186 Measured Height 143 um lt 797 Nominal frea gt 164998 Measured frea 138159 um2 lt 83 Nominal Volume 28494726 Measured Volume 19746342 um3 lt 69 Offsets lt 106 189 gt F2 next error previous F4 inspect F8 edit Fi False Fail exit LEFT prev pad RIGHT next pad UP gt next scan DOWN prev scan Fig 4 16 Sample 3D Action on Failure Menu The results menu displays the CAD specified height area and volume of the solder paste deposits It also displays the measured height area and volume of the solder paste deposits as determined by the SP1 The percentage value displayed in brackets represents the measured value as a percentage of the nominal value Also displayed is the pad name the number of errors found on the board and the reason for failure which can due to excessive or insufficient height area or volume Doc 5000 0032 02 Page 49
9. Fiducial Editor Menu Automatic Fiducial training can be used from the Fiducial Editor menu by pressing the F4 key After a few seconds the fiducial parameters will be optimised These can be used as the starting point for further optimisation by hand or used as they are Click on the fiducial centre to tell the software the exact location of the fiducial The auto training function will automatically adjust the fiducial parameters to optimise the fiducial location and presence values How to enable Auto Fiducial Training Auto Fiducial training should be automatically available with this system If it is not it will have to be enabled in Config txt file by entering the command Auto_wait delay enable parameter_allow shape_allow Where the four parameters are Delay always set to 0 Enable 1 enables Auto Fiducial Training 0 disables it parameter_allow 1 allows fiducial parameters to be altered by the software 0 doesn t allow them to be altered shape_allow 1 allows optimisation of fiducial shape 0 doesn t allow the software to change the fiducial shape Doc 5000 0032 02 Page 57 mvt SP 1 USER MANUAL ADVANCED FEATURES For example Auto_wait 0 1 0 0 Enables Auto fiducial training but doesn t allow the fiducial parameters to change LE Only allows manual location of fiducial Auto_wait 0110 Enables auto fiducial training with automatic fiducial parameter setting Auto_wait 0111 Enables auto fiducial training with auto
10. Menu press T The X amp Y reducer should be set to 0 or 1 and the X amp Y border should be set to 200 to 500 Doc 5000 0032 02 Page 64
11. PAD OFFSET z PAD HEIGHT SIDE PINS lt N i SIDE PINS lt S gt SIDE PINS lt E SIDE PINS lt W FILTER PT lt i gt G FILTER PT lt 2 gt _ FILTER PT 3 gt FILTER PT lt 4 gt _ 5 PROC PARM lt 1 gt AA PROC PARM lt 2 gt PROC PARM lt 3 gt PROC PARM lt 4 6 Fig 4 6 2D Deposit Editor Menu Body Size Fig 4 7 Device Type Editor 2D Doc 5000 0032 02 Page 39 mvt SP 1 USER MANUAL PROGRAMMING A BOARD Explanation of 2D Parameters Search Area X and Y The algorithm uses the paste placement machine s CAD data to determine the location of the paste deposit The algorithm searches in an area determined by Search Area X and Search Area Y Paste Size X and Y The Algorithm expects to find the paste deposit contained in an area Paste Size X and Paste Size Y These dimensions are automatically taken from the stencils used to deposit the paste Brightness Thresholds The Algorithm uses 2 brightness thresholds to process these images namely the Paste Threshold Process Parameter 1 and the Pad Threshold Process Parameter 3 By default the values of Process Parameter and Process Parameter 3 are set for all deposits to 100 and 170 respectively Note A Greyscale value of 0 represents black whereas 255 represents white Note When set to 0 the thresholds are set to the default Entering values for Process Parameter 1 and Process Parameter 3 in the Device Type Editor overwrites th
12. but the position can be moved to using the jog keys in the XY Table menu 5 7 Viewing Saved Images Saved 2D Images can be viewed by going into the Filing Menu F3 from the Engineering Menu The F5 Saved Image Menu will bring up a list of the saved images These images are a pgm format and can also be viewed by PaintShop Pro software available as shareware on the Internet Doc 5000 0032 02 Page 60 mvt SP 1 USER MANUAL ADVANCED FEATURES 5 8 Loading New Software to 3D Imaging Head Customers are required to do this on rare occasions Loading new software into the 3D imaging head requires A DB9 female to DB9 female cable with pins 2 3 3 2 and 5 5 connected Hyper Terminal Software gt Software for the 3D head Boot hex New software for the 3D head call it New hex The steps are 1 2 SD eo E a 10 11 12 13 Exit the SP 1 software Connect the 9 pin cable to the open Com port on the computer and to the open connector on the 3D head Launch Hyper Terminal Settings Com 1 115000 baud 8 Data bits no Parity 1 Stop Bit Xon Xoff flow control From Hyper Terminal Press x to stop the program Enter ploadex From the pull down menu select Transfer Send File Boot hex to the 3D head Read the return address and add a 0 to the end for the next step Enter go c0000 or whatever the address is This prepares the 3D hea
13. select Display and select a resolution of at least 1000x1000 2 From the Windows Start menu select Run then enter regedit This starts the Registry Editor 3 Navigate to HKEY_LOCAL_MACHINE SOFTWARE MV Technology GS 1 Display and Direct 4 Edit the View Port Height to 1016 and the View Port Width to 1008 The SP 1 software will need to be restarted to use this setting Text Window The menu window displays text in a window that is set for 80 characters wide by 25 characters tall To make this window larger or smaller the font size of the widow is changed This is done by right clicking while the cursor is in the upper window border Select Properties then the Font tab It is recommended that the font be set to 14 to 20 The Colors tab can change the Screen Text to white it may revert to light cyan to Doc 5000 0032 02 Page 63 mvt SP 1 USER MANUAL ADVANCED FEATURES make the text more readable As this is exited select Modify Shortcut to make this selection permanent until another later version of the executable is loaded 5 13 Setting Camera Border The SP 1 2D camera uses most of the camera s area but a border is set to ensure that the SP 1 can find paste deposits that extend beyond their normal search windows This border is set in microns and can be accessed from the Part Numbers Menu F5 from the Database Menu In the Part Numbers
14. 1 The S command can Set a fiducial s position Sfl Set fiducial 1 Procedure for setting fiducial positions 1 Access the XY Table Menu F7 from the Engineering Menu 2 Press B to bring up the board graphics on the Graphics monitor 3 Check the board graphics to determine where Fiducial 1 is 4 Press to bring up crosshairs This cleans the board graphics 5 Use the jogging keys to move the camera over Fiducial 1 These keys are identified in the XY table menu under Movement see previous section 6 Press S f 1 lt return gt to set the position of Fiducial 1 Ts Verify this is correct by pressing g f 2 lt return gt to go to Fiducial 2 If the camera goes to another fiducial it is probably correct 8 Now press g v 1 lt return gt to go to view 1 If the boxes line up over the components it is definitely correct If Fiducials do not line up If the fiducials do not line up make sure the correct CAD template is being used and retry the inspection If the inspection still fails then the fiducial parameters must edited Doc 5000 0032 02 Page 33 mvt SP 1 USER MANUAL PROGRAMMING A BOARD 4 4 Editing Fiducial Parameters Fiducial parameters can be edited automatically or manually Automatic Fiducial Editing Select F2 from the main user menu to run a local inspection The following error message will appear on screen if there is a problem with the fiducials
15. 95 j62_1 Current Rotation 8 Solder Paste CAD Menu Rotate CAD by 9 degrees Rotate CAD by 186 degrees Convert from Mentor to Scan Save manipulated scans Exit to Solder Paste Inspection Menu Enter Command Fig 5 2 CAD Manipulation Menu Rotate CAD by 180 degrees F3 from Solder Paste CAD Menu This option enables the user to rotate the CAD by 180 degrees if the user s CAD is 180 degrees out from its desired position Save manipulated scans s from Solder Paste CAD Menu This option saves the manipulated scans into a file named by the user Doc 5000 0032 02 Page 62 mvt SP 1 USER MANUAL ADVANCED FEATURES 5 11 Deleting Copying amp Renaming Board Files Existing PCB Files can be changed from the Filing Menu F3 from the Engineering Menu The currently selected board for inspection cannot be deleted or renamed the SP 1 software will not allow this This is useful to clean up the list of PCB presented to the operator when in PCB Select The commands are F1 Delete Program Data F6 Rename a Template F7 Copy a Template 5 12 Setting Window Sizes Image Window The SP 1 2D camera has a pixel resolution of approx 1008 x 1016 The image display window of the SP 1 computer is usually set to be smaller so that a lower resolution display can be used this makes the computer icons amp text easier to read The SP 1 can be set to display the full 2D image l From the Windows Control Panel
16. ING A BOARD Explanation of 2D Device Thresholds 2D Device thresholds are parameter values used by the SP 1 to determine if a paste deposit passes or fails inspection These parameters are accessed from the Device Editor Menu by pressing F3 which displays the Device Type Threshold Editor Menu shown below M SP 1 Control LIBRARY DEVICE TYPE THRESHOLD EDITOR Fi Inspect CURRENT Device Type F2 Inspect Errors F3 Inspect SPECIFIED Component F4 Another one pa_ 991x 711 Pres Top Ofs Bot Ofs Area 5 E Height 125 J Volume PRES ENCE HORIZONTAL VERTICAL z 2 SKEW AREA 3 HEIGHT VOLUME Fig 4 11 Threshold Editor Screen Presence Threshold This value represents the minimum presence value that the 2D algorithm must return for a paste deposit to be considered present If the algorithm returns a presence value lower than the presence threshold then the SP 1 will mark the deposit as being missing As already stated the user should divide the Presence Threshold value by 10 to obtain a meaningful presence value A presence value of 600 means that at least 60 of the Body Area should be covered in paste to be accepted Presence values under 600 mean that there is insufficient paste on the PAD A limit is also set for excess paste The SP 1 does this automatically by subtracting the Presence Threshold from 2000 If the 2D algorithm returns a presence value greater than this value then the SP 1 will return a Too M
17. cross hairs gt The trackball can be moved to the graphics screen to highlight a single deposit useful to select for deposit editing Remaking CAD Data 2D If the Search Area is changed for any 2D algorithm the CAD needs to be remade This requires Operator 3 level To remake the CAD data from the Main User Menu enter the Engineering Menu F7 followed by the Database Menu F8 followed by Part Numbers Menu F5 then press r to remake the CAD data Changing thresholds does not require remaking the CAD data Doc 5000 0032 02 Page 45 mvt SP 1 USER MANUAL PROGRAMMING A BOARD 4 7 3D Mode Programming To access the 3D Solder Paste Inspection Menu from the Main User Menu enter the Engineering Menu F7 followed by the Database Menu F8 followed by the 3D Menu F2 MA SP 1 Control Status Inspected Fig 4 13 Solder Paste Menu 3D Doc 5000 0032 02 Page 46 mvt SP 1 USER MANUAL PROGRAMMING A BOARD 4 8 3D Scan Selection F5 from Solder Paste Menu The SP 1 will only 3D inspect the deposits that the user selects The system will display all of the deposits on the graphics monitor see fig 4 12 The user can select and deselect deposits to be inspected by clicking on them with the cursor The z key can be used to zoom in and out as required Pressing x exits and saves the new scan selection The scans selected can be viewed by pressing F4 form the 3D Solder Paste Menu The
18. d to receive new PROM software Enter ploadex From the pull down menu select Transfer Send File New hex Note the return address and add a 0 Enter auto c0000 or whatever the new address is This makes the new software restart every time the power is reset The cable may now be disconnected and HyperTerminal can be stopped The power cable should also be temporarily disconnected from the 3D head to restart the software Doc 5000 0032 02 Page 61 mvt SP 1 USER MANUAL ADVANCED FEATURES 5 9 Loading New SP 1 Executable Software Any new SP 1 software should have an installation wizard If not the executable should be loaded into the c Program Files MV Technology directory 5 10 Rotating Board Files The board inspection files plx amp pls may need to be rotated if the board is to be presented to the SP 1 in a different orientation to the one in which it has been programmed The plx 2D file can be rotated from the Filing Menu F3 from the Engineering Menu The 3D scn file must then be deleted When the board is selected again with the PCB Select function the scn file will be regenerated The scn 3D file can be rotated separately from the Solder Paste CAD Menu F8 from the 3D Menu ISP 1 Control 3i Status _ 7 Error Status Barcode BarCode M U Technology PASS OK cpi 56 rep 99695j62_1 developer Waiting for Board Soft 3 Bd 696
19. e default values FOR THAT TYPE ONLY The algorithm uses these thresholds as follows The algorithm assumes that all pixels in the first image taken with high level leds that have a brightness value greater than Process Parameter 3 Pad Threshold are pad Those points designated as pad are removed from the second image taken with low level leds so that the composite image becomes Pad Paste Dark pad Bright Paste Fig 4 8 Composite Image 2D The algorithm designates all points in this image with an intensity value greater than Process Parameter 1 Paste Threshold to be paste Doc 5000 0032 02 Page 40 mvt SP 1 USER MANUAL PROGRAMMING A BOARD Note The user can change the default threshold values for all device types globally This is done from the User Part Numbers Menu by Pressing P and entering values For want deltas enter 1 For clear histograms enter n for no Mode This value sets the algorithm to operate in various modes This value should generally be left at 47 However if there are dark areas of paste can happen if paste is still wet then set the Mode to 175 This enables the algorithm to effectively ignore the paste threshold intensity value and designate everything inside the boundary as paste and not just those points with an intensity value over 100 The Mode values are not magic numbers but are based on the collective enabling of functional Bits see table below Therefore the val
20. e 2nd line has the headings for the remainder of the file There is then a 3 line that is blank The remainder of the file has 1 line for every pad inspected on the board In these lines there are 9 fields separated by 1 or more spaces and they represent RefDes Pad Machine Feeder Algorithm Area CAD Angle X Offset Y_Offset Theta_Offset Error_Code The first 2 fields have a hyphen to separate the sub fields The Angle is 0 9 18 or 27 and represents 0 90 180 or 270 degrees The Area is based on percent fill where 1000 is 100 percent The X amp Y offsets are in microns The Theta offset is in tenths of degrees 12 represents 1 2 degrees An Error_Code of 0 means there is no error If the error is not 0 then a 10 field will describe the failure in human readable text Example Board venus_r pls Operator 01 03 Feb 1998 13 58 37 BC BarCode LO R1 30 0 RefDes Feeder Type Area Angl X Y Theta ErrCode e R10b6 cpa 42 R0603 980 9 36 10 0 0 Cr10b1 Cpb 24 s2616 330 27 9999 9999 1 Missing 9999 C10al Cpb 12 C0603 970 9 39 50 15 0 3D Report File Format The 3D report files are saved at c cpi rep pasO01 rep to c cpi rep pas5 12 rep The file format has 2 header lines The 1 line indicates what board was run the operator level the date amp time the barcode the conveyor lane run and the software revision The 2nd line has the headings for the remainder of the file There is then a 3 line that is blank The remainder of t
21. e XY stage directly This can be used to allow the user set a board s fiducial position There are a variety of commands available in this menu so care should be taken with keys used Note The commands in this menu are case sensitive so u is not the same as U Ensure the CAPS LOCK indicator light on the keyboard is OFF SP 1Control RY Table access menu HIF Rev 1 5 Ar Movement r lu d xi lt arrows gt x100 6 4 8 2 xi Moves 73 79 1 xi Commands exit Homing hCome Misc next Px 126526 Py Cmd gt Stet gloto dev view eCrror Handle Q lt disable il lt nfo Reset F3 Home axis FS B1kSkp F lt CLimitSet Digital 1 0 view pCrev oCinspect lt clear fCocus sCpeeds BCoard_disp 89621 Lx 97183 Ly 167711 L x View 32 of 53 Fig 4 1 X Y Table Menu Keyboard u d Move the stage 25 000 microns up down P f Move the stage 25 000 microns left right Numerical Keypad 8 2 Move the stage 250microns up down 4 6 Move the stage 250 microns left right Arrow Keys TL Move the stage 2 500 microns up down gt Move the stage 2 500 microns left right Doc 5000 0032 02 Table 4 1 XY Table Menu Jog Commands Page 32 mvt SP 1 USER MANUAL PROGRAMMING A BOARD Several Commands are available on the XY Table Menu to Find or Set Fiducials The g command can go to a fiducial gfl goto fiducial
22. ection if the system is at Operator 3 level 5 2 Releasing boards before an inspection is finished LJ When a board is running the inspection can be stopped early after a given number of defects by setting a parameter in the F5 Set System Parameters Board Abort Error Count If the number of defects found on a board equals or exceeds this number the inspection will stop at that point instead of continuing to the end 5 3 The Config txt File The Config txt file is used to set several software features on the system Most of the ones that the user needs are set before the system leaves MVT The user can change enable or disable them by accessing c cpi data config txt and altering the parameters Note The Parameters must only be altered by someone with a knowledge of what their effects and ranges are Care must be taken when altering them as there are a limited number of values allowed for each parameter and they must be in definite sequences An incorrect value in the wrong sequence can disable the setting or worse Some of the more useful settings are listed below Setting the Skip Mode This allows the user to skip the inspection of a specific deposit This is done by setting the lineno_action_on_failto0Oor2 Doc 5000 0032 02 Page 54 mvt SP 1 USER MANUAL ADVANCED FEATURES Typically this line would read no_action_on_fail 0 Or no_action_on_fail 2 The 2 puts the system into
23. elow this value the panel is considered to be deleted block_1leds Set to 1 if the LEDS are turned on before inspecting the block skip regions Typical settings are e bad_panel_detect 40 0 for automatic checking without block skip marks Doc 5000 0032 02 Page 55 mvt SP 1 USER MANUAL ADVANCED FEATURES e bad_panel_detect 80 2 800 128 1 for automatic checking of bright block skips e bad_panel_detect 80 2 800 128 1 for automatic checking of dark block skips Setting Fiducial Correction Mode This can allow the fiducials to compensate for stretch rotation and can anchor the compensation to the 1 fiducial or the middle of the board The new fiducial model is set to Off by default The user must enter the line fid_model number in the cpi data config txt file where number is an integer bitfield specifying the user options The user options are 0 Do nothing Use the old fiducial model 1 Use new model 2 Set origin to midpoint of fiducial 1 fiducial 2 line Otherwise fiducial 1 is taken to be the origin of the coordinate system This affects the behavior of the scaling 4 Use axial scaling in the case of 2 fiducials Otherwise radial scaling is used 8 turn on scaling in the fid 1 fid 2 direction 16 turn on scaling in the fid 2 fid 3 direction 32 turn on shear correction in the fid 1 fid 2 direction Note the last 2 options only take effect in the case of a 3 fiducia
24. entered to match the shape of the fiducials on the board 0 Circular 1 Rectangular 2 Diamond Shaped 3 Cross Shaped ross shaped Fiducial v Inner y radius Inner x radius Note For a cross shaped fidual the Ring and Center Intensities are the same 4 Force LEDs On Off The LEDs are often used to provide additional illumination to give greater fiducial contrast They can have the following values 0 Default On when centre is brighter than outer region Off when outer region is brighter than centre 1 On for fiducial checking 2 Off for fiducial checking Doc 5000 0032 02 Page 37 mvt SP 1 USER MANUAL PROGRAMMING A BOARD Procedure for editing Fiducial Parameters 1 Input the correct Shape Mode for the fiducial Input integer value from 0 to 3 to correspond with circular rectangular diamond or cross shaped fiducials respectively 2 Turn LEDs on off Turn LEDs on if fiducials are very dirty Leave LEDs off if fiducials are not dirty 3 Set the correct fiducial dimensions to increase the Presence Value score Inner and Outer X amp Y radii should differ by about 40 to 50 microns For optimum results set the template area roughly equal to twice the outer ring area 4 Set the intensities correctly Q0 is black 128 is grey and 255 is bright X Exit menu esc if Presence Value score is above the threshold setting A score of greater than 900 should be attainable Do not set
25. es the existing paste deposit Dark Spots of Paste within the paste deposit Set Mode to 175 This allows everything inside the paste deposit to be considered solder paste Doc 5000 0032 02 Page 42 mvt SP 1 USER MANUAL PROGRAMMING A BOARD Algorithm Results The 2D algorithm displays the following results in the Device Editor Menu pa_0991x0711 Pres 950 Top Ofs 20 Bot Ofs 10 Hor Ofs 0 Skew Fig 4 10 Presence Value 2D Presence Score Valid scores range from 0 upwards A presence score of 900 means that the Paste area is 90 of the Body Area Body Size X Body Size Y Similarly a presence score of 1300 means that the Paste Area is 130 percent that of the Body Area Top and Bottom Offsets These entries display the top and bottom offsets of the solder paste deposits from their ideal position A boundary box which is the smallest box that can fit around the perimeter of the paste deposit is drawn in cyan and used in the calculation of the offset values Horizontal Offset This entry displays the horizontal offset of the solder paste deposits from its ideal position A boundary box which is the smallest box that can fit around the perimeter of the paste deposit is drawn in cyan and used in the calculation of the offset value Skew Skew is not measured for each individual deposit but is calculated for the board as a whole Doc 5000 0032 02 Page 43 mvt SP 1 USER MANUAL PROGRAMM
26. g of the score is calculated fiducial Outer X amp Y Used for presence Usually should be set to Radius calculation just larger than the fiducial perimeter Inner X amp Y Used for presence Usually should be set to Radius calculation just smaller than the fiducial perimeter Don t Care Used if center regionof Seldom Radius the fiducial center is darker than the rest of the fiducial Table 4 2 Region size parameters used for Fiducial editing 2 Brightness settings The user must input the intensity value corresponding to the brightness of the Background Intensity Ring Intensity and Center Intensity see Figure 2 6 The valid range of brightness intensities is 0 to 255 as shown in Figure 2 7 0 128 i y 255 Fig 4 5 GS 1 Brightness Intensity Scale In the Fiducial Editor Menu input the appropriate brightness to match the visible on screen brightness of the Background Intensity Ring Intensity and Center Intensity of the fiducial These values do not have a major impact on fiducial scoring so approximate values of 50 150 and 250 for the Background Intensity Ring Intensity and Center Intensity of a bright centered fuducial are usually acceptable Doc 5000 0032 02 Page 36 mvt SP 1 USER MANUAL PROGRAMMING A BOARD 3 Shape Mode Fiducial shapes can differ depending on the board manufacturer This menu entry enables the user to deal with the four most common fiducial shapes The following values should be
27. he file has 1 line for every pad inspected on the board In these lines there are 11 fields separated by 1 or more spaces and they represent Doc 5000 0032 02 Page 59 mvt SP 1 USER MANUAL ADVANCED FEATURES p RefDes Pad RefDes Algorithm X Offset Y Offset Area Pad Height Board Height Volume Error_Code The 1 field is always p The 2nd field has a hyphen to separate the sub fields The X amp Y offsets are in microns The Area is based on percent fill where 1000 is 100 percent The Pad_Height amp Board Height are in microns Pad_Height is the number reported Board Height is for reference only Volume is in percent where 1000 represents 100 percent The volume is based on pad X amp Y size and nominal height An Error_Code of 0 means there is no error If the error is not 0 then a 12 field will describe the failure in human readable text 5 5 Changing Operator 2 amp 3 Passwords On the Engineering Menu the F2 Set Password option will change the current Operator level password The current password must be entered as a precaution If the passwords are ever lost contact MVT to reset the passwords 5 6 Setting XY Table Software Limits In the XY Table menu F7 from the Engineering Menu pressing F7 Limit Set will move the XY table to the limits and write the new line in the c cpi asalrc file It is an indication that this need to be done if the SP 1 give an XXX outside of table limits message
28. in Chapter 3 The first time the board is selected the plx file will automatically be used to generate a scn file The plx file is the 2D file and the scn file is used for 3D Note Ifa problem is seen later with the 2D amp 3D requiring the 2D plx file to be regenerated the scn file should be deleted then the file selected Select PCB Type in Chapter 3 This will regenerate the 3D scn file Doc 5000 0032 02 Page 30 mvt SP 1 USER MANUAL PROGRAMMING A BOARD 4 2 Putting the System into Soft Stop In this mode the system loads a board clamps it normally and then stops The user can then perform inspections with the lt F2 Local Inspect gt function and move around the board It is useful for training new boards and troubleshooting current ones L The SP 1 is put into Soft Stop by typing S while in the Main User menu The system can also be put into soft stop during an inspection if Operator Level 3 U The word Soft will be displayed in the Status Window U Soft Stop is cleared by pressing lt F1 Remote Inspect PCB gt The word Soft should disappear from the screen While in Soft Stop the system will go to the action on failure menu after an inspection even if in Skip mode Doc 5000 0032 02 Page 31 mvt SP 1 USER MANUAL PROGRAMMING A BOARD 4 3 Setting Fiducial Position Going to the XY Table Menu F7 from the Engineering Menu allows the user to control th
29. l board The user should set the number so that it enables the features that they require Example If you want to use the new model with axial scaling for 2 fiducials in the fid 1 fid 2 direction number 1 4 8 13 It is recommended that number should be set to 63 1 2 4 8 16 32 to enable all options This would give the line id_model 63 in the config txt file Enabling Fiducial Auto Train Auto Fiducial Training can be used from the Fiducial Inspection Error Message or from the Fiducial Editor Menu see Section 4 4 Auto Fiducial Training from the Fiducial Inspection Error Message When fiducial inspection fails an error message is displayed See Fig YYY Doc 5000 0032 02 Page 56 mvt SP 1 USER MANUAL ADVANCED FEATURES Press F5 to initiate the auto training process The XY table will move to Fiducial 1 and the user will be asked to locate the centre of the failed fiducial with the mouse Click on the fiducial centre to tell the software the exact location of Fiducial 1 The auto training function will automatically adjust the fiducial parameters to optimise the fiducial location and presence values GS 1 Error Message Fiducial 1 Error Score Limit 768 Fi Retry Fiducial Inspection F2 Release Backwards Fi Release Forewards and Exit F3 XY Table Menu F4 Fiducial Editor Auto Train Fiducial Fig 5 1 New Fiducial Inspection Error Message Auto Fiducial Training from the
30. matic fiducial parameter setting and optimisation of fiducial shape Setting LED Delay This sets the time in Milliseconds that the system should delay between turning on the LEDs and the camera capturing and image In Config txt file edit the line led_delay time Where time is the time in milliseconds This is typically set from 5 to 20 e g led_delay 10 Setting Asynchronous Camera Parameters You can ensure that the asynchronous camera settings are correct in the Config txt Check that the line as is setto 8 10 E g as 8 10 This delays the camera triggering and sets the timing for the image aquisition It is recommended that this be set to 8 amp 10 Setting Maximum Number of Pads Allowed The user can set the memory space for the maximum number of pads that the system will retain reports on It is important that this is not too high as the system could run out of memory and slow down or crash It is generally set between 12000 to 20000 This is set before the system leaves MVT In the Config txt file check the line rows d e g rows 18000 Doc 5000 0032 02 Page 58 mvt SP 1 USER MANUAL ADVANCED FEATURES 5 4 Report File Formats 2D Report Files The 2D report files are saved at c cpi rep cpi001 rep to c cpi rep cpi5 12 rep The file format has 2 header lines The 1 line indicates what board was run the operator level the date amp time the barcode the conveyor lane run and the software revision Th
31. nds while running an Inspection 54 5 2 Releasing boards before an inspection is finished 54 5 3 The Config txt File 54 5 4 Report File Formats 59 5 5 Changing Operator 2 amp 3 Passwords 60 5 6 Setting XY Table Software Limits 60 5 7 Viewing Saved Images 60 5 8 Loading New Software to 3D Imaging Head 61 5 9 Loading New SP 1 Executable Software 62 5 10 Rotating Board Files 62 5 11 Deleting Copying amp Renaming Board Files 63 5 12 Setting Window Sizes 63 5 13 Setting Camera Border 64 SUMMARY This chapter describes more advanced functionality used by the SP 1 Most of these functions are not required on a daily basis They are included in the manual to show to user the various options that are available to them when they set up and use the system It includes some config txt file settings and other topics not explained in earlier chapters Doc 5000 0032 02 Page 53 mvt SP 1 USER MANUAL ADVANCED FEATURES 5 1 Commands while running an Inspection While an inspection is running two commands can be used U The a key can be pressed to switch in and out of Skip mode This requires Operator 3 and the Skip mode must be set up in the config txt file it will not go into Skip mode if it is not enabled After this button is pressed the word Skip should appear or disappear from the Status window The system will boot up in Skip mode regardless of how this is set when the software is exited U The x key will stop an insp
32. p RADIUS 6 OUTER Y RADIUS BACK G INTENSITY 3 RING INTENSITY CENTER INTENSITY 40 DONT CARE RADIUS FID amp OFFSET 126 FID Y OFFSET SEARCH AREA X z 2000 SEARCH AREA Y FIDUCIAL THRESH 700 Shape Mode 0 3 Force LEDS On Off 1 Force Barcodes Fig 4 3 Fiducial Editor Menu Fl used to inspect the Fiducials and check the Presence Value The Presence Value is displayed in square brackets beside F1 915 in Figure 2 5 Presence Value ranges from 0 missing to 1000 perfect F2 enables the user to go to a Fiducial of choice Cursor Keys These are used to move between fields in the Fiducial Editor Menu Parameters to be edited Fiducial Parameters to be edited fall into 4 classes 1 Five region Sizes 2 Three brightness settings 3 Shape Mode 4 LEDs Search Area Brightness Settings Background Intensity Ring Intensity Dont care Radiu Center Intensity Outer Radiu Fig 4 4 Fiducial Parameters Doc 5000 0032 02 Page 35 mvt SP 1 USER MANUAL PROGRAMMING A BOARD 1 5 Region Sizes in microns REGION SIZES TO BE ALTERED Menu Function When to Alter Option Search Area Defines the area in Always Set to include the X amp Y which the fiducial is fiducial but not features expected to be found such as bright printing on the PCB Set about 6 times the size of the fiducial Template This defines the areain Usually should be 3 times X amp Y which the presence larger than outer rin
33. t affects the area calculation Doc 5000 0032 02 Page 51 mvt SP 1 USER MANUAL PROGRAMMING A BOARD 4 11 Running a GR amp R Test Gage Repeatability and Reliability GR amp R Tests are used to check the accuracy and consistency of the inspection program that the user has developed for the PCB It helps to determine whether the measurement process is acceptable This should be done after each inspection program has been developed and before it is released to Production GR amp R values of 10 or less of the process tolerance should be obtained before the board is released GR amp R Procedure 1 Put the system in 2D 3D or 2D amp 3D mode F6 from the Main User Menu 2 Put the system in Soft Stop and load a board 3 Go to the Installation Menu F3 from the Database Menu On the Installation Menu select F5 Single Repeatability Test 4 The system will ask for a mode select 2 This means the board is not released from the conveyor between inspections 5 The SP 1 will now run 3 inspections on the board 6 At the end the 6 sigma deviation of several parameters will be shown X Offset Y Offset Area Height and Volume The type of parameters shown will depend on whether the system is in 2D 3D or 2D amp 3D mode Doc 5000 0032 02 Page 52 mvt SP 1 USER MANUAL ADVANCED FEATURES Chapter 5 SP 1 Advanced Features CHAPTER CONTENTS 5 1 Comma
34. tle for a score of less than 700 unless the fiducials are very dirty 6 Perform a local inspection Perform a local inspection using F2 from the main user menu The purpose of this is to allow the system to compensate for any skew or offset of the board The local inspection can be aborted by typing x after the camera has located the fiducials Doc 5000 0032 02 Page 38 mvt SP 1 USER MANUAL PROGRAMMING A BOARD 4 5 2D Board Programming Perform a Local Inspection 2D This is an inspection option for when the SP 1 is in Soft Stop and a board is already loaded onto the conveyor Pressing F2 while in the Main User Menu will perform a local inspection This is useful as a first step to programming the board into the system The user can edit the parameters and thresholds of deposits that have failed at the local inspection 4 6 Editing 2D Parameters amp Thresholds From the 2D action on failure menu pressing F8 when at Operator 3 level will take you to the 2D parameters amp thresholds editor SP 1 Control F2 Next Err F3 Threshold F4 Another F5 Alt F6 Polarity SS SS SSS IE A PERE 22 es 61 Top Ofsl 61 Bot Ofsl Hor O0 61 Skewl 1 COMMENT A solder paste device I i 7 EA i 2134 BODY HEIGHT SIZE 7 305 SIZE A 1422 FFSET X t BODY OFFSET BODY COLOUR SIZE X o LEAD SIZE t S LEAD PITCH OFFSET amp LEAD OFFSET Y LEAD HEIGHT PAD SIZE X PAD SIZE PAD PITCH PAD OFFSET amp
35. uch Paste error Vertical and Horizontal Offsets Vertical and Horizontal Offsets represent the maximum value in microns that the deposits can be offset from the required position It is recommended that these values be left at 200 Doc 5000 0032 02 Page 44 mvt SP 1 USER MANUAL PROGRAMMING A BOARD Moving to Deposits 2D Going into the XY Table Menu F7 from the Engineering Menu allows the user to control the XY stage directly This can be used to jog to a problem 2D component There are a variety of commands available in this menu so care should be taken with keys used Note The commands in this menu are case sensitive so u is not the same as U Ensure the CAPS LOCK indicator light on the keyboard is OFF Movement r lu d xi 6 lt arr gt x100 6 4 8 2 x10 Moves 73 7 9 1 xi Commands exit Stet gloto dev view eCrror Handle Qldisable iIl lt nfo Reset hlome F3 CHome X axis FS B1kSkp F CLimitSet Digital 1 0 next view prev oCinspect Cclear fCocus sCpeeds BCoard_disp 126526 Py 89621 Lx 97183 Ly 167711 L x View 32 of 53 Fig 4 12 X Y Table Menu Several Commands are available on the XY Table Menu to Find Specific Deposits or Fiducials 6699 The n command will move to the next view The p command will move to the previous view The o command will inspect the current view gt Press to clear screen and place
36. ue 47 enables the functionality of Bits 1 2 4 8 and 32 These add up to 47 Bit Meaning When Set 1 Turn on the LEDS 2 Use the Top Leds Image to blank its bright areas in the low image 4 Turn off the bottom LEDS when taking the top image 8 Smooth the bottom image before processing 16 0 Sub pixel pixel counting 1 Non Sub pixel counting 52 Track a blob trying 3 start positions and if OK use the bounding box as a search area for the blob count 64 Try to join disjointed regions 128 Use the results from the boundary tracker area not the counted value 256 Use the sub pixel version of the above Table 4 3 Mode Settings 2D Doc 5000 0032 02 Page 41 mvt SP 1 USER MANUAL PROGRAMMING A BOARD Editing the 2D Paste Algorithm Pressing F1 while in the 2D Device Editor Menu will bring up the template for the paste deposit am L Fig 4 9 Templates projected on sample pad and its top light Image Note The top light image of the paste deposit is also displayed adjacent to the processed image The Paste Algorithm should rarely need to be edited However the following circumstances may necessitate algorithm editing Search Area too big The Search Area should only encompass one paste deposit however if the Search Area is set too big then it may encompass part of another deposit This may lead to the Algorithm returning a false error The solution is to reduce the Search Area so that it only encompass
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