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CLIOwin 6.5 QC Software Extension User`s Manual

1. BE MLS Frequency Response Reg GHIA oO Joa la funo 5 2 00 180 0 BV Deg 4 00 108 0 6 00 36 0 8 00 36 0 OC iit 10 00 e ES 108 0 12 00 180 0 20 100 1k 10k Hz 20k Filename loop mls CHA dBV Unsmoothed 48kH2 16K Rectangular Start 0 00ms Stop 341 31ms el D 2 33Hz Figure 14 14 Chapter 14 Quality Control 15 fi Hides if visible or shows if hidden the limits curves in the active measurement control panel Releases all the measurement control panels Each panel acquires its normal Ka appearance Infact when a QC test sequence is running each panel loses its overlay and curve controls and its status bar in order to maximize the graph display when the windows are tiled Fig 14 15 shows the MLS control panel in the two different situations LIEWEG TET GOOD DL x BEMLS Level 0 37dB GOOD iol x TC SIGN cre ev Unsoed seo eo le elfunsmocthed z 0 180 20 100 1k 10k Hz 20k 180 10k Hz 20k Filename loopb mls He dBY Unsmoothed 48kHz 16K Rectangular Start 0 00ms A Figure 14 15 When control panels are managed under QC there are two other differences toolbar button are usually disabled while the title of the window is used to display the result of the parameters that
2. m INA gt TO CLIO OUTB gt CH1 INB gt ISENSE PROMPT MESSAGE PLACE 10 OHM 1 RESISTOR ACROSS D U T TERMINALS SETIMPEDANCE ETMUTEB n PERFORM ELAY 500 CH SIN Chapter 14 Quality Control 49 REFERENCE IMPEDANCE SINI LIMITS IMPEDANCE LIM SETINPUTI PERFORM LIMITS IMPEDANCE LIM FFT OUT 10 0 IN 10 ACQUISITIONDELAY 200 REFERENCE FFT FFT LIMITS FFT LIM RESETMUTEB SETMUTEA PERFORM DELAY 500 LIMITS CH LIM PROMPT MESSAGE CONNECT MESSAGE2 OUTB gt CH2 SETINPUT2 PERFORM DELAY 500 SIN REFERENCE CH SIN LIMITS CH LIM RESETMUTEA You can find the files of this example in the DATA EXAMPLE2 directory under the installation directory 50 Chapter 14 Quality Control 14 9 3 EXAMPLE 3 A FOUR WAYS CROSSOVER INPUT A CLIO aan OUTPUT B m hi In2 From CLIO m h3 MODEL 3 h4 Ampli SwitchBox D UT Kier Hi Mid MidLo 4 Ways Xove
3. The files upper txt and lower txt are export ASCII files that may be produced by other applications or CLI Owin itself The upper tt file may look like Freq Hz dBV 100 5 500 3 5000 al 10000 5 14 6 1 ABSOLUTE VS RELATIVE FREQUENCY LIMITS The following limits file defines an absolute frequency limit ABSOLUTE UPPER LIMIT DATA 200 100 300 97 10000 97 15000 100 LOWER LIMIT DATA 200 82 300 85 10000 85 15000 82 The frequency mask is shown in Fig 14 29 Figure 14 29 and 14 30 The following limits file defines a relative frequency limit RELATIVE UPPER LIMIT DATA 200 5 Chapter 14 Quality Control 27 300 2 10000 2 15000 5 LOWER LIMIT DATA 200 5 300 2 10000 2 15000 5 The frequency mask is shown in Fig 14 30 Relative means with respect to the reference file defined in the QC test Data values will be added and subtracted to the reference value at the specified frequencies It is possible to input up to 100 frequency points to define the check mask The QC processor will execute the check starting from the first frequency point ending at the last no check will be done outside this frequency range Inside a frequency limits file it is possible also to define an average level check see 14 6 2 and 14 6 3 an
4. PERFORM MESSAGE FILTER ON DIP OFF OFF ON ON SIN OUT 10 IN 10 REFERENCE A SIN LIMITS C LIM PROCESS ASHIFT SPRO PERFORM MESSAGE SET DEFAULT SETTINGS FILTER OFF DIP ON OFF OFF ON 48 Chapter 14 Quality Control 14 9 2 EXAMPLE 2 THE AMPLI FI ER amp SWI TCHBOX UNDER QC From CLIO CLIOQC Ampli SwitchBox D UT Sense To CLIO 10 Ohm 1 Figure 14 46 This example details the quality control procedure that Audiomatica uses to test its production of CLIOQC Amplifier amp Switchbox A precision 100hm 2W 1 resistor is needed and must be connected across DUT terminals The procedure executed in Interactive mode guides the operator and requests the manual connection of the unit the cable coming from output B of CLIO must be swapped during the test between input 1 and 2 The test begins with two impedance measurements the first executed in I Sense Mode the second executed in Internal Mode Then it is performed a THD measurement with FFT and finally the frequency response of each input channel Note the keywords used to alternatively mute CLIO s output GLOBALS COMPANY AUDIOMATICA S R L FLORENCE TITLE QCBOX TEST PROCEDURE INTERACTIVE PROMPT MESSAGE CONNECT MESSAGE2 OUTA gt FROM CLIO
5. Figure 14 35 You may note that the buttons of the harmonics are now active to let you inspect them When pressed the relative harmonic is shown with its limits as in fig 14 36 Chapter 14 Quality Control 33 w00 1800 PL ee i wo ep AV A mo mo j ED tk 14 6 7 MULTI METER LIMITS FILES Figure 14 36 The following limits file defines a multimeter QC check UPPER LIMIT DATA VOLTAGE 0 78 THD 0 01 LOWER LIMIT DATA VOLTAGE 0 77 THD 0 0001 The parameters available are PRESSURE VOLTAGE FREQUENCY THD IMD 34 Chapter 14 Quality Control 14 7 MANAGING PRODUCTI ON BATCHES Managing a production batch is a rather complex while delicate topic as it involves diverse needs of diverse areas inside your company CLIOwin QC handles your batch doing the following Maintains a directory structure where different files are saved Automatically saves production report files If requested autosaves data files Maintains serial number coherence Calculates statistical data about the batch The result is that you will find the production well documented both for your internal purpose aimed to achieve the highest quality standard and also for interfacing with your client who request technical information about the units 14 7 1 DIRECTORIES CREATED BY CLIOWIN QC Suppose you saved your script inside the directory My qc When you run
6. ELECTRICAL amp ACOUSTICAL TESTS ioj xi File Gules Controls Window Help GMs fa echt IL 36 0 36 0 108 0 180 0 20k WA Quality Control ajam a 2 S B DB EGD Bare 1 GOOD MLS Response GOOD 03 06 02 18 49 13 UNIT N 1 GOOD UNIT N 2 READY Figure 14 24 Let s now complete this first exercise adding a Multimeter measurement of level and total harmonic distortion at 1kHz Close the MLS and QC control panels Press F4 to open and run the Multimeter control panel click then on the di generator button to switch the generator on and play the default 1kHz sinusoid Press now T to stop measuring save this measurement as loop met Fig 14 25 should be what you have in front File Analysis Controls Window Help A ee Ee ce ELE pore Tc Sa mv B sse gt igs z D Q Voltage vote gt CES ME CHA la ER avs 0 774 vms 0 00 0 20 0 40 0 60 0 80 03 0 UNIT Filename loop met ER Fast UNIT N 2 READY Figure 14 25 Press now Ctrl Q and then L to go back inputting a limits file definition Input the following UPPER LIMIT DATA VOLTAGE 0 78 24 Chapter 14 Quality Control THD 0 01 LOWER LIMIT DATA VOLTAGE 0 77 THD 0 0001 Save this as loopmet lim Click now on the at button and position the cursor
7. 2 10000 2 15000 5 I n this case the measured curve is presented on screen with correct values while the limits curves are moved around it Chapter 14 Quality Control 31 14 6 5 THI ELE amp SMALL PARAMETERS CHECK It is possible to execute QC tests of the following T amp S parameters Qt Qe Qm Fs Cms Mms Mmd BI Vas dBSPL and ZMin To evaluate the first four parameters it is necessary to input the value of the DC resistance of the voice coil with the keyword REDC To evaluate the remaining parameters by means of a simplified estimation routine it is necessary to input the value of the driver diameter with the keyword DI AMETER and one among the following fixed quantities KNOWNMMD fixed mass or KNOWNMMS fixed mass plus air load or KNOWNCMS fixed compliance The following limits file defines a T amp S parameters check inside a limits file with a frequency mask for an impedance response The parameters checked are Qt Qe Qm and Fs TSPARAMETERS QTUPPER 0 3 OTLOWER 0 05 QEUPPER 0 3 QELOWER 0 05 QMUPPER 5 QMLOWER 2 FSUPPER 90 FSLOWER 50 REDC 5 5 UPPER LIMIT DATA 29 89 142 35 40 52 161 18 102 15 161 18 152 62 143 53 LOWER LIMIT DATA 29 89 11 29 49 23 20 00 64 33 45 88 76 28 47 06 98 49 22 35 141 87 11 76 The following section define a T amp S check of Qts
8. GC My age GI GC My ge CJ MyBatch OJ My Savefolder Ze Help i ie Help CJ Signal CJ Signal CJ Tables I UD Tables d Temp p BG Temp Figure 14 39 and 14 40 14 7 2 PRODUCTION REPORT FILES Suppose that today J une 6 2002 at 6 46 you started a production of your devices the batch named My Batch ended yesterday with unit number 100 After two units tested CLI Owin will add under the folder My Batch the following report files production 06 06 02 6 46 18 txt 101 txt 102 txt After 20 units tested production_06 06 02_6 46 18 txt 101 txt 102 txt 120 txt If you stop the production exit CLIOwin and then restart it at 7 01 after two more units tested production_06 06 02_6 46 18 txt production_06 06 02_7 01 05 txt 101 txt 102 txt 122 txt The files production_ date time txt describe the QC session They look like STATISTICS MY COMPANY MY QUALITY CONTROL BATCH My Batch DATE 06 06 02 INITIAL SN 101 TOTAL TESTS 2 GOOD 2 BAD 0 36 Chapter 14 Quality Control TEST REPORT UNIT N 102 GOOD 6 46 24 1 GOOD MLS Response GOOD C Program files Audiomatica Cliowinpci Data My qc My Batch 102_1 mls 2 GOOD MET Voltage 0 775Vrms GOOD THD 0 006 GOOD C Program files Audiomatica Cliowinpci Data My gqc My Batch 102_2 met UNIT N 101 GOOD 6 46 18 1 GOOD MLS Response GOOD C Program files Audiomatica Cliowin
9. LIMITS IMPEDANCE LIM The main QC script end here It is a fairly simple one that can be customized for any production of loudspeaker Let s now see the cyclic script The basic idea is to execute the same measurements as in the main script and save them with the names of the reference files for the main script itself AUTOSAVE 1 prepares for saving all the measurements done SAVEFOLDER is a particular syntax to set the script directory as the current one GLOBALS AUTOSAVE 1 SAVEFOLDER OUT 0 IN 20 Therest of the cyclic script resembles the main script with the difference that after each measurement we define the name of the file to be saved and force it to be equal to the name of the reference file in this way the reference file itself is updated SAVEPROMPT 1 instructs the QC processor to prompt for user acceptance of the save operation this is useful for validating the procedure and avoiding errors SETINPUT2 58 Chapter 14 Quality Control MLS REFERENCE NEARFIELD MLS LIMITS NEARFIELD LIM SAVENAME NEARFIELD SAVEPROMPT 1 SETINPUTI1 MLS REFERENCE FARFIELD MLS LIMITS FARFIELD LIM SAVENAME FARFIELD SAVEPROMPT 1 SETISENSE SIN OUT 6 0 IN 30 REFERENCE
10. RESETLOOPA Opens internal loop on channel A Valid only for CLI Owin running PB 4281 PCI card and SC 01 signal conditioner RESETLOOPB Opens internal loop on channel B Valid only for CLI Owin running PB 4281 PCI card and SC 01 signal conditioner RESETMUTEA Switches mute for channel A off RESETMUTEB Switches mute for channel B off RESETPHANTOM Switches phantom power off SETI MPEDANCE Selects impedance mode of the CLI OQC Amplifier amp SwicthBox SETI NPUT1 SETI NPUT2 SETI NPUT3 SETI NPUT4 SETINPUT5 SETINPUT6 SETINPUT7 SETINPUTS8 Selects the relative input channel of the CLIOQC Amplifier amp SwicthBox SETI SENSE Selects isense mode of the CLIOQC Amplifier amp SwicthBox SETLOOPA Closes internal loop on channel A Valid only for CLI Owin running PB 4281 PCI card and SC 01 signal conditioner SETLOOPB Closes internal loop on channel B Valid only for CLI Owin running PB 4281 PCI card and SC 01 signal conditioner SETMUTEA Switches mute for channel A on SETMUTEB Switches mute for channel B on SETPHANTOM Switches phantom power on 68 Chapter 14 Quality Control 14 10 5 OTHER KEYWORDS SNI NPUT Prompts the user for serial number input STOP Immediately stops the script execution Chapter 14 Quality Control 69 14 10 6 KEYWORDS USED IN LI MI TS FILES ABSOLUTE Defines an absolute limit file This is also the default condition when the RELAT
11. RESULT C REVIEW MEASUREMENT e Chapter 14 Quality Control 17 CALCULATE OPTIONAL PARAMETERS Figure 14 18 Reviewing a saved measurement from within QC is different than simply opening the file from the measurement control panel it this second case no post processing due to QC operation is applied Fig 14 19 shows a measurement blue curve reviewed inside QC with its limits red and green curves and the same measurement loaded from the measurement control panel purple curve the shift in level is due to QC operation when it separately checks for relative level and frequency behaviour E Sinusoidal Af x aala glor m vona zeen sjfunsmoted zl E v v a FFiename response sin ER dBSPL Unsmoothed Delay ms 0 000 Dist Rise dB 30 00 Figure 14 19 Note the review operation can be done only when inside a QC session if CLI Owin is exited when later QC is started again a new QC session will be created report information and review operation will apply to the new session 14 4 4 THE QC RESULT PANEL x AUDIOMATICA CLIO QC PROCESSOR AUDIOMATICA FIRENZE ITALY PB 4281 QUALITY CONTROL UNIT N aa 3 7 READY i Batch 2002 Production Figure 14 20 The QC Result panel usually accompanies QC sessions where measurement display is not needed This resultin a situation with simple go no go masks for use with completely
12. Size 257 bytes UE UE 40 N CH N S wo Q CH N Ka N ao Ga Les CH N CH DA 3 OR 40020253 40020254 40020255 40020256 Figure 14 8 SS Autosave Eie Edit View Go Favorites Help ve amp i f EE Back Forward Up Cut Copy Paste Undo Delete Address ja C clio2000 qemanual my first ge AUTOSAVE ES Autosave Select an item to view its description PI Pi P 4002242 1 40022422 40022431 4002243 2 gt 598MB E My Computer Z Figure 14 9 Chapter 14 Quality Control 9 14 3 THE QC SOFTWARE OPERATI ON The QC software is a file driven event processor that in sequence performs a number of user defined measurements to test the quality of a production line The text file qc extension driving this process is called the QC Script CLIO s QC processor does the following job reads the QC script and loads it in memory interprets it executes all the tests reports the test result and production statistics manages the production batch and serial number prompts for the next test The following block diagram outlines the QC process MIT LOAD QC SCRIPT WAIT FOR USER OR TRIGGER TO START QC TEST PERFORM MEASUREMENT _ REPORT STATISTICS Le QC TEST MEASUREMENTS amp BATCH BAD ENDED NO MANAGEMENT Ts QC TEST ALL RESULTS GOOD VEG GOOD Figure 14 10 You can see the operatio
13. IMPEDANCE LIMITS IMPEDANCE LIM SAVENAME IMPEDANCE SAVEPROMPT 1 Wel z You can find the files of this example in the DATA EXAMPLE6 directory under the installation directory Chapter 14 Quality Control 59 14 10 QC SCRIPT SYNTAX REFERENCE 14 10 1 KEYWORDS FOR GENERAL SETTINGS NOTE SCRIPTDIR means the directory where the QC script is saved GLOBALS Starts a section containing settings and definitions valid for the whole test sequence AUTOBATCH 1 Enables automatic batch naming The name of the production batch is set equal to the current name of the folder where the QC script is saved SCRIPTDIR 0 Does not perform autobatch If omitted defaults to 0 AUTOSAVE 1 Autosaves all measurements Applies to all measurements 0 Does not perform autosave If omitted defaults to 0 BATCH Name of the production batch See also AUTOBATCH and SAVEFOLDER CYCLIC Name of the cyclic script The cyclic script is executed every REPETITION times instead of the actual script All measurements executed inside the cyclic script do not take part in production report batch management and serial numbering See also CYCLICFIRST CYCLICFIRST 1 Executes the cyclic script before executing the QC test itself If omitted defaults to 0 i e no cyclic script executed first Refer also to CYCLIC and REPETITION for defining the cyclic script behavior C
14. NUMBER COHERENCE There are several ways to handle the serial numbers of your devices and to maintain their coherence through all the production of one batch Before starting a test it is possible to input manually the serial number thus forcing it to do this just click on the S button The operator can be prompted for serial number input using the SNINPUT keyword It is possible to avoid that bad unit increases the serial number using the INCREASEONBAD keyword Set INCREASEONBAD 0 if you want that only good units participate to serial number report statistical and autosave management 38 Chapter 14 Quality Control The operator under her or his judgement can force the final result of a bad test if the keyword PROMPTFORGOOD 1 is used 14 7 6 THE SKIP LAST BUTTON When a QC test is finished it is also possible to null its result pressing the Skip Last gt button All information saved with the test will be erased comprising serial number increment and statistical data The production report will mark the unit as SKIPPED Chapter 14 Quality Control 39 14 8 INTERACTING WITH EXTERNAL HARDWARE The interaction with an external hardware gives CLI Owin the possibility of realizing semi or fully automatic production lines QC tests Several keywords have been introduced to implement this functionality see to reference section for a complete listing 14 8 1 INPUT SENSITIVITY AND OUTPUT VOLTAGE CONTROL As we have a
15. You should obtain a straight line as in Fig 14 23 Save this measurement as Loop mls 22 Chapter 14 Quality Control BI MLS Frequency Response of x AEE L BO Ha zjev sjJunsmoothed 5 100 1k 10k Hz 20k 180 0 Fiename loop mis CHA dBY Unsmoothed 48kHz 16K Rectangular Start 0 00ms Stop 341 31ms FreqlO 2 93Hz Figure 14 23 Now open the QC control panel Press N we are starting a new script Press Ctrl E to exit edit mode and then press L to enter Limits Text mode Input the following frequency masks as limits UPPER LIMIT DATA 20 4 2 30 4 7 15000 4 7 20000 4 2 LOWER LIMIT DATA 20 ud 30 Del 15000 t 20000 52 Press F2 and save the limits file as loopmls lim Click now on the at script button and then click on the capture button Your blank text display should now be filled with your first QC script MLS OUT 0 IN 0 0 REFER ENC E LOOP MLS LIMITS LOOPMLS LIM Click on the TH go button the QC processor should execute a QC test performing an MLS measurement displaying it together with the defined limits everything as in Fig 14 24 the text display should now present information on the executed test Chapter 14 Quality Control 23 BR CLIO
16. automatic lines or operators who don t need to take particular actions with respect to the test result 18 Chapter 14 Quality Control To activated the QC Result panel from within the QC script use the DI SPLAY 0 keyword Note for maximum QC test speed use the QC Result display and don t show single measurements as the display of a graphical objects and measurement curves usually employs a lot of processor time The QC Result panel can be forced to appear at the end of the QC sequence pressing the ag button 14 4 5 THE QC BANNER fg CLIO ELECTRICAL amp ACOUSTICAL TESTS lel x File Analysis Controls Window Help SAAB MR Ts 8 G 008 vG v t sg H Multi Meter ENN Ellen mer mr oe Figure 14 21 The QC Banner is managing information and messages given to the operator while in Interactive mode Chapter 14 Quality Control 19 14 4 6 QUALITY CONTROL MENU AND SHORTCUTS fg CLIO ELECTRICAL amp ACOUSTICAL TESTS Figure 14 22 Figure 14 22 shows the Quality Control menu accessible from the Analysis menu Here below we list also all the available Hot Keys ESC or T Exits the QC test sequence End Exits the QC test sequence in Interactive mode SpaceBar Continues the QC test sequence in Interactive mode Starts a QC test Equivalent to ti Skip last executed measurement Equivalent to w Input serial number Equivalent to Du Show Report E
17. defaults to 1 i e MANUAL MESSAGEONBAD Text to be displayed when unit performs bad If omitted defaults to BAD MESSAGEONGOOD Text to be displayed when unit performs good If omitted defaults to GOOD OPENSERIAL Opens the QC COM port for serial communication See 6 3 6 for RS 232 settings See also SERIALMONITOR OUT Sets the generator output level with OUTUNITS defined under GLOBALS OUTQCBOX Sets the generator output level taking into account QCBox gain with OUTUNITS defined under GLOBALS This is the level that will be present at QCBox output OUTUNITS Sets the unit of measure of the output level It is possible to set dBu dBV or V If omitted defaults to dBu PHANTOM 1 Switches phantom power supply on 0 Switches phantom power supply off If omitted defaults to 0 Valid trough all the QC test sequence PROMPTFORGOOD 1 Prompts when unit is bad for user acceptance and overrides result 0 No prompt when unit is bad If omitted defaults to 0 i e no prompt REPETITION Number representing the frequency of execution of the cyclic script SAVEBINARY 1 saves also in binary format if SAVETEXT 1 Ignored if used alone Applies Chapter 14 Quality Control 61 to all the measurements If omitted defaults to 0 Remember that if nei ther SAVETEXT nor SAVEBINARY are specified the default format is binary SAVEFOLDER Forces the name of the autosave directory If omitted the default autosave directory is SCRIPT
18. inside the text display after the last line of text clicking now as before on the capture button the following lines should be added and you are ready for this new QC test MET OUT 0 0 IN 0 REFERENCE LOOP MET LIMITS LOOPMET LIM Pressing now Go inside QC executes this two measurements QC test sequence Fig 14 26 shows the test at its end Figure 14 26 This concludes our first approach to QC script writing and debugging All the files necessary to study this lesson are furnished within the DATA MY FIRST OC directory under the CLI Owin installation directory The loop qc script is doing exactly what just described with a difference measurements are performed in interactive mode just load it and run it to feel the differences Chapter 14 Quality Control 25 14 6 NOTES ON LI MI TS CURVES As previously outlined the QC processor needs limits data in order to perform the required checks These data are saved within the limits files and usually represent a frequency mask for frequency response and impedance tests but they can also define a single value check like for example a Qms test When dealing with frequency checks the options defined affect the way the frequency masks are calculated the way data are displayed on screen and the way the result is checked It is also possible to add an average or single frequency level check that concur to the final result Fig 14 27 shows us the procedure for calcula
19. the specified tolerance Since the perfect device has still to be build it is not possible to use relative limits from a real life measured reference 2 The IEC specifies a response in term of a 0 dB at 1kHz The absolute level at 1kHz is however left to the test procedure As we want to perform the test near the highest level the device is able of accept we need to use the PROCESS feature to shift the real measure to the specs level 3 Changing in switches position is required during test We have therefore to use the INTERACTIVE feature 4 A level regulation is required to align the gain at 1kHz with and without filter This brings in the LOOP feature of the MET multimeter test 5 Its very difficult for the operator to set switch accordingly to the next test to be performed The PERFORM and MESSAGE feature greatly simplifies this avoiding errors The QC script reported here with comments allows the check of the filters response against Type 1 tolerance specification It also check for 0 2 dB gain tolerance of the gain switch in both position As an additional features allows within the test to adjust a variable gain trimmer that has to be settled this procedure LOOP also ends with a check of the adjusted level to be within 0 2 dB At every level check a distortion test THD defined in the LEV1 LIM file is performed As a general rule a QC procedure is defined from one QC file qc extension and several limits file li
20. when encountering these keywords In the previous paragraph you can see also the possibility of mixing time delays with signals definitions in order to generate pulses 14 8 7 PARALLEL PORT SIGNALS MANAGEMENT The TTL signals generated with the active parallel printer port of the PC may be interactively controlled by means of the External Hardware menu recallable with Shift F4 After opening this box press the Direct TTL Control button o and you obtain the control panel shown in fig 14 43 To get TTL signals operation please select a parallel port among the available ones ey fun d Direct TTL Controls Output Input r Bid E Bit F Bitl Bi5 T B Bie IV Bit3 VW Bit 1 184 Set Bits Figure 14 43 The Direct TTL Controls dialog lets you set the status of the eight output bits using the appropriate check boxes while triggering it with the Set Bits button a decimal representation of the output binary word is also present On the left side it is reported the status of the input start bit The pinout of the standard parallel port is shown in fig 14 44 note the eight output bits and the start trigger pulse in input Figure 14 44 44 Chapter 14 Quality Control 14 8 6 RS 232 SERIAL PORT CONTROL During QC execution it is possible to control serial devices like label printers connected via an RS 232 link to your PC You can select and configure a COM port for QC control within the File gt Setup gt Q
21. 28 14 6 3 ALIGNED MASK une e Ee ege 30 14 6 4 FLOATING LIMITS VS FLOATING CURVES iiscinscaterrsrtaneanercancensentanannesientannatianneixcunts 31 Ee E BE Ge Eer 32 14 6 6 SINUSOIDAL HARMONICS CHECK pusi risemmansuinmjndsboianenninprdesneambakemedesskedu sa n 33 14 6 7 MULTIME TER UMTS FLES seende 34 14 7 MANAGING PRODUCTION BATCHES Lunsj id bguidensitnmne 35 14 7 1 DIRECTORIES CREATED BY GUOWIN OG EE 35 14 7 2 PRODUC MON REPORT EE keegesegehgegeba ege atesi 36 12 73 AUTOS ED DATA E 37 14 7 4 WYSIWYG OPERAT ION EEE EE cerca santacstaeaneecedats 37 14 7 5 STATISTICAL INFORMATION ON MEASURED DATA 38 14 76 SERIAL NUMBER COHERENCE a sincaisnctdcnccesuinntevne docntdsaconewutaecdsnetaacansmoustteeatuabaaoiwctaes 38 14 7 6 THE SKIP LAST BUTTON vurdera 39 14 8 INTERACTING WITH EXTERNAL HARDWARE icevccassiasstaccastvecaunetniasuandvergaeneeddaneabivensaeneiaes 40 14 8 1 INPUT SENSITIVITY AND OUTPUT VOLTAGE CONTROL An 40 148 280 01 DG OUTPUT CONTROL emmekeeeeketk aneres eege 40 14 8 3 CLIOQC AMPLIFIERSSWITCHBOX CONTROL ee keegtezerseterebeugaegeggegeegeegte eeger 41 14 8 4 EXTERNAL TRIGGER E 41 14 8 5 SIGNALS GENERATION E 42 14 8 6 TIME DELAYS GENERATION sisacivarcrnisattccsboceuareseconcdsatialetddes cepteisnccaccatamcaouinaseideaateeaunt 43 14 8 7 PARALLEL PORT SIGNALS MANAGEMENF RE 44 14 8 6 15232 SERIAL PORT CON EE 45 14 9 LEARNING CLIOWIN QC WITH EE 46 14 9 1 EXAMPLE 1 QG OFA MICROPHONE PREAMPLIFIER neeese 46 14 9 2 EXAMPLE 2 THE AMPLIFIERS SW
22. ATA 200 SC 300 2 10000 2 15000 D i NN DANN UW The align point in the example 90dBSPL 5000HZ is used both to build the frequency mask that is specified relative to it and to identify the frequency at which to perform the level check 30 Chapter 14 Quality Control BJMLS Level 0 22d8 GOOD LD pe EPC GA JG mes Aii2cctave SS EHH AEA Un BIMLS Level 0 22d8 GOOD mee ER o Ir ALTON POINT 90dBS Lesopons ED TO CALCULATE 70 0 108 0 60 0 180 0 100 1k 10k Hz Figure 14 34 Fig 14 34 shows an mask aligned to the point 90dBSPL 5000Hz The level check means that the value of the measurement at 5000Hz is 0 22dB higher than the align point The measured curve is shifted of this value to pass exactly at 90dBSPL at 5000Hz then the frequency check is performed see also 14 6 4 The level shift means that the curve is displayed with a level different from the measured one Refer also to Fig 14 19 14 6 4 FLOATING LIMITS VS FLOATING CURVES When an average or single frequency level check is defined 14 6 2 or 14 6 3 it is possible to define floating limits instead of floating curves using the FLOATING keyword RELATIVE FLOATING LEVEL UPPER 3 LOWER 3 UPPER LIMIT DATA 200 5 300 2 10000 2 15000 5 LOWER LIMIT DATA 200 5 300
23. C panel see 6 3 6 The following script can be used to print a label at the end of a QC test if the result of the test is good the printing commands refer to a Zebra Z4M printer GLOBALS OPENSERIAL 1 SERIALMONITOR 1 IF ALL GOOD SERIALOUT XA LH40 100 F020 10 AD FD SERIALNUMBER FS XZ Note the SERI ALNUMBER acronym that is used to output the current serial number Itis possible to activate mainly for debugging purposes a monitor window that echoes RS 232 activity to do this use the SERIALMONITOR keyword QC RS 232 Monitor x OUT 4 LH40 100 F020 10 AD FD2 FS xZ The same text output in the above example could be saved in an ASCII file and loaded with the SERIALOUTFILE keyword IF ALL GOOD SERIALOUTFILE SERIAL TXT e Chapter 14 Quality Control 45 14 9 LEARNING CLI OWIN QC WITH EXAMPLES 14 9 1 EXAMPLE 1 QC OF A MI CROPHONE PREAMPLIFIER INPUT A CLIO gm OUTPUT B Input PRE 01 Preamplifier Output Figure 14 45 This example is taken form our internal QC procedure for the PRE 01 Microphone Preamplifier Figure 14 45 shows the connections required The PRE 01 features three weighting filters and two gain positions This test is a representative case of the following requirements 1 The limits are ABSOLUTE as they are taken from the IEC tables for
24. CLIO ELECTRICAL amp ACOUSTI CAL TESTS N WN AVANE NAA ME 5 KN QC Software extension User s Manual AUDIOMATICA O Copyright 1991 2004 by AUDIOMATICA SRL All Rights Reserved January 2004 IBM is a registered trademark of International Business Machines Corporation Windows is a registered trademark of Microsoft Corporation CONTENTS K e TER Ae ei 5 141 INTRODUCTION eee Oase i 5 14 2 FEATURES OF CLIOWIN RE 5 14 2 1 THE OPERATOR S POINT OF WEE Ebene 6 1422 THE ENGINEER S POINT OF VIEW sst eegen 7 14 23 THE COMPANY S POINT OF VIEW vunne eege iate ee 9 14 3 THE QC SOFTWARE OPERATION eugegteggteagsgeegterergbeg tbeeneerggbeagbeeeaagarhtgegeng 10 14 4 THE OG CONTROL PANEL eee 14 14 41 TOOLBAR BUTTONS sasincsconciscndccnasrwaccardesqetantatsadeaudsasescuesiecaauan sautaccaluncaoudeusetaeaexmeatne 14 144 2 THE OG REPORT FAB gies deiere deser 16 14 4 3 REVIEWING A MEASUREMENT RE 17 14 44 TRE QC RESULT E EE 18 14 45 THE OC BANNER eebe eebe Seege EENEG 19 14 4 6 QUALITY CONTROL MENU AND SHORTCUTS sicsincustiinietiontincsntrsrnmcnnasnietn 20 14 4 7 QC REGISTERED FILE ETENSIONS Lue asemmspenmmngine 21 145 MY FRSTOG SCRIP T arraio iea ease 22 14 5 1 WHAT TO KNOW ABOUT QC SCRIPTS ssssicacccctivaiussatomacaresorsesdunttearasiovesmuuanrsccadencaou 22 14 5 2 HOW TO WRITE MY FIRST QC SCRIPT getest Date ergett 22 4 IN TE TENT GUN Leke 26 14 6 1 ABSOLUTE VS RELATIVE FREQUENCY LIMITS sinnene smeden 27 14 6 2 AVERAGE LEVEL CHECK EE
25. DIR AUTOSAVE if no batch name is defined otherwise it is SCRIPTDIR BATCH where BATCH is the name of production batch If you desire to save files in the script directory itself use the particular syntax SAVEFOLDER i e leave blank the right part SAVEONGOOD 1 Autosaves all measurements if global result is good Applies to all measurements 0 Does not perform autosave If omitted defaults to 0 If you want to autosave also in case of bad measurement add the keyword SAVEONBAD 1 under GLOBALS SAVEONBAD 1 Autosaves all measurements if global result is bad Applies to all the measurements 0 Not active If omitted defaults to 0 Refer also to SAVEONGOOD and AUTOSAVE SAVETEXT 1 saves ASCII file instead of binary format Applies to all the measure ments 0 saves files with normal binary format If omitted defaults to 0 SERIALMONITOR 1 Activates the RS 232 monitor panel during QC execution 0 Does not activate the RS 232 monitor panel If omitted defaults to 0 STARTSIGLOGIC Defines the logic of the external trigger signal 1 is active high 0 is active low If omitted defaults to 0 i e active low STATISTICS 1 Enables statistical data files generation 0 Disables statistical data files generation If omitted defaults to 0 STATFILESRES Number of data lines present in statistical frequency files maximum is 2048 TITLE Text used as the second title of the QC control panel Usually a description of the test WY
26. ESERIAL Closes the QC COM port after serial communication Chapter 14 Quality Control 65 DCON 1 sets DC voltage superimposed to channel A output active 0 sets DC voltage to 0 If omitted defaults to 0 DCV Value of output DC voltage to be set see DCON DCVQCBOX Value of output voltage to be set see DCON taking into account QCBox gain This is the DC voltage that will be present at QCBox output DELAY Value in milliseconds of a pause to be performed EXPORTGRAPHICS Exports the current measurement to a graphical file The same file naming convention used for data files is used EXTERNAL Name of an executable file to be launched See also PARAMETERS and WAITCOMPLETION IN Sets the input sensitivity if omitted autorange is activated MESSAGE Text to be displayed in a prompting message to the user MESSAGE2Second line of text to be displayed in a prompting message to the user MESSAGE3BThird line of text to be displayed in a prompting message to the user MESSAGE4Fourth line of text to be displayed in a prompting message to the user OPENSERIAL Opens the QC COM port for serial communication See 6 3 6 for RS 232 settings OUT Sets the generator output level with OUTUNITS defined under GLOBALS OUTQCBOX Sets the generator output level taking into account QCBox gain with OUTUNITS defined under GLOBALS This is the level that will be present at QCBox output PARAMETER1 String to be passed as first parameter t
27. Fs Cms Bl and ZMin having fixed the mechanical mass Mmd value TSPARAMETERS REDC 6 2 DIAMETER 110 KNOWNMMD 10 7952 QOTSUPPE OTSLOWE FSUPPER FSLOWER CMSUPPEI R R CMSLOWE I BLUPPEI BLLOWER ZMINUPPE ZMINLOWE 32 Chapter 14 Quality Control 14 6 6 SI NUSOI DAL HARMONI CS CHECK When executing sinusoidal frequency response measurements it is possible to activate quality control checks over single harmonic responses from the second to the fifth This QC operation will be defined in the relative limits file as in the following example UPPER LIMIT DATA 1000 106 2000 116 5000 116 7000 96 LOWER LIMIT DATA 1000 89 2000 99 4000 99 6000 80 3 UPPER LIMIT DATA 300 70 500 90 2000 90 5000 70 4 UPPER LIMIT DATA 200 53 400 68 1300 79 1900 79 2500 77 5300 77 6300 67 In this example we defined a check on the third and fourth harmonic with an upper limit only It is possible to define also the lower limit but usually this is not the case The complete listing of the applicable keywords is in the reference section Fig 14 35 shows the sinusoidal control panel after the test defined with the above limits file EI Sinusoidal Response GOOD 3rd GOOD 4th GOOD ce OP eee faes 130 0 KREE
28. IF ALL GOOD IT 1 ITVALUE 1 PERFORM IT 0 m r nu W W W 42 Chapter 14 Quality Control BITVALUE DELAY 200 31 PERFORM BITVALUE 0 This example defines a signal high on bit 3 if the MLS test performs bad a signal high on bit 1 if all the tests are OK and an unconditioned pulse of 200 ms on bit 0 that may be used to signal the end of the QC test sequence Referring to Figure 14 42 we can see the time signal of the three bits in the two possible cases A and B in case A the MLS test performed bad and in case B good bit 3 bit 1 A bit 0 load start FFT MLS end ready setup bad bad for next bit 3 bit 1 B bit 0 load start FFT MLS end ready setup good good for next Figure 14 42 In the example shown each single bit of the parallel port was controlled separately by means of the BIT and BITVALUE keywords it is also shown how to simultaneously control the 8 bits with the 8BITVALUE keyword In the next example the value of 33 decimal is directly output thus setting bits 0 and 4 to one and all the others to zero PERFORM 8BITVALUE 33 lav 14 8 6 TI ME DELAYS GENERATI ON It is possible to define a time delay in any point of a script file with the following definition PERFORM DELAY 200 IO Chapter 14 Quality Control 43 In this example the QC sequence waits for 200 millisecond
29. IFFERENCE active i e divided by the reference than the saved file will be divided by the reference if wysiwyg is active otherwise no 14 7 5 STATISTICAL INFORMATION ON MEASURED DATA Statistical information characterizing the production can be obtained by CLI Owin using the STATISTICS keyword under GLOBALS CLI Owin will save under the report directory the following files One file named data table txt with statistical informations on all the measured parameters One file named avg testnumber txt per each response test defined containing the average response for that test One file named sdmax testnumber txt per each response test defined containing the average response plus two times the standard deviation for that test One file named sdmin testnumber txt per each response test defined containing the average response minus two times the standard deviation for that test The statistical files keep track of the all the units saved within a batch even if the production is stopped and then restarted Let s now see how the data table txt looks like supposing the same case of 14 7 2 after two tests we would have the following SN Voltage THD 101 0 775 0 006 102 0 775 0 006 Avg 0 775 0 006 SDMax 0 776 0 006 SDMin 0 775 0 006 The other response files representing average and standard deviation curves may be imported within each control panel with the Import feature recallable with Shift F3 14 7 6 SERI AL
30. IT N41 GOOD 17 27 48 LIMITS LOOPMET LIM 1 Soop MLS Response GOOD GOOD MET Voltage 0 774vrms GOOD HD 0 004 GOOD Figure 14 6 It is possible to capture the active measurement the check masks can also be input in a visual manner drawing limits over the measurement debugging is helped by an internal corrector MLS Frequency Response Figure 14 7 8 Chapter 14 Quality Control 14 2 3 THE COMPANY S POINT OF VIEW CLI Owin for quality control executes line testing in a fast accurate and reliable manner Its flexibility permits easy handling of trade offs between parameters like speed and accuracy matching always company s needs The autosaving and exporting capabilities together the complete result reporting give instant access to the production parameters and statistics even during its operation The production batch is fully managed while preserving serial number coherence File Edit View Go Favorites Help er ajy ajaj x S Back Forward Up Cut Copy Paste Undo Delete Properties Address fa C clio2000gemanual my first qc REPORT bd bd f D I GA a bd bd D 23 05 02 40 17 27 43 txt Text Document D d ei e bd D ei So bd ei ei Modified 23 05 02 17 27 UE UE UE bd ei ei bd d ei ei a bd bd ei ei D
31. ITGHBOX UNDER Q essin 49 14 9 3 EXAMPLE 3 A FOUR WAYS CROSSOVER sunset nie 51 14 9 4 EXAMPLE A A MEDIUM SIZED PRODUCTION OF A 130M DRIVER eee 53 14 9 5 EXAMPLE 5 A LARGE SIZED PRODUCTION OF A 2CM TELEPHONE DRIVER 55 14 9 6 EXAMPLE 6 A CYCLIC SCRIPT USED TO MANAGE MY ROGERS LS3 5A TWO WAYS LOUDSPEAKER PRODUCT ION EE 57 14 10 QC SCRIPT SYNTAX REFERENCE egeten deeg Edge eege 60 14 10 1 KEYWORDS FOR GENERAL SETTINGS ca scocstaicccssrcasancniestonsattaaunsivceaunmustovestenedure 60 14 10 2 KEYWORDS FOR MEASUREMENTS SETTINGS oseere 63 14 10 3 KEYWORDS FOR CONDITIONAL EXECUTION sitcinstenarndasascdstwadermnsnesseiararadsscatebaties 65 14 10 4 KEYWORDS FOR HARDWARE CONTROL ssiccccectetctersicierciaivenenieitirenas 68 14 105 OTHER KEYWORDS risers EENEG 69 14 10 G KEYWORDS USED IN LIMITS FILES ecegegeieetieeege reen Eegen 70 14 QUALI TY CONTROL 14 1 INTRODUCTION The Quality Control software extension for CLI Owin is a powerful suite for executing state of the art production line testing CLIOwin QC implements all the measurement techniques found in the CLI Owin standard software adding a versatile script processor that handles the test sequence most appropriate for your needs CLIOwin QC is able to test the production of loudspeakers drivers microphones amplifiers and of any other electroacoustic device CLI Owin QC can interact with external hardware or production line controller with PC peripherals with netwo
32. IVE keyword is not specified FLOATING If present forces floating limits curves RELATIVE Defines a relative limit file LEVEL Starts a section defining a check on the sensitivity of the measured curve ALIGNFREQ Align frequency for the sensitivity check Valid only when ALIGNLEV is specified and it is not ALIGNLEV REFERENCE See below ALIGNLEV Align level forthe sensitivity check If itis specified ALIGNLEV REFERENCE then the sensitivity check is against the average level of the reference in the band defined by the frequency mask used for the response check If omitted defaults to ALIGNLEV REFERENCE LOWER Lower limit for the sensitivity check UPPER Upper limit for the sensitivity check TSPARAMETERS Starts a section defining a Thiele amp Small parameters check REDC Value in Ohms to be input representing the DC resistance of the voice coil REDC must always be specified DIAMETER Input value in mm specifying the driver diameter It is needed only when testing Cms Mms Mmd BI Vas dBSPL or ZMin used with one of the fixed parameters KNOWNMMD or KNOWNMMS or KNOWNCMS You must specify only one fixed parameter KNOWNMMD Input value for the fixed Mmd parameter It is needed only when testing Cms Mms Mmd BI Vas dBSPL or ZMin KNOWNMMS Input value for the fixed Mms parameter It is needed only when testing Cms Mms Mmd BI Vas dBSPL or ZMin KNOWNCMS Input value for the fixed Cms parameter It is n
33. LE5 directory under the installation directory 56 Chapter 14 Quality Control 14 9 6 EXAMPLE 6 A CYCLIC SCRIPT USED TO MANAGE MY ROGERS LS3 5A TWO WAYS LOUDSPEAKER PRODUCTION This example describes a hardware and software setup to do quality control over a production of loudspeakers units the responses taken come from our samples of Rogers LS3 5A speakers The hardware setup is shown in Fig 14 50 Mic No 1 Mic No 2 From CLIO CLIOQC Ampli SwitchBox ISense To CLIO Speaker far field near field Figure 14 50 As you can see we employ a CLI OQC Amplifier amp SwitchBox that connects two measuring microphones one for near field response and the other for far field response The internal switcher is used to configure impedance with current sensing or frequency response measurements and to select the correct microphone The quality control of such a production relies on what is called a reference loudspeaker i e a unit which is kept aside the line and retested regularly to give reference data curves for the units under test These data trace environmental conditions To accomplish the recurrent operation of testing the reference loudspeaker CLI Owin QC implements what is called the cyclic script i e a QC script that is launched by the main script on a timed basis and executed once When the cyclic script is launched the operator is prompted and the reference unit must be placed on the l
34. OMPANY Text used as the first title of the QC control panel Usually the company name DCON 1 sets DC voltage superimposed to channel A output active 0 sets DC voltage to 0 If omitted defaults to 0 DCV Value of output DC voltage to be set see DCON DCVQCBOX Value of output voltage to be set see DCON taking into account QCBox gain This is the DC voltage that will be present at QCBox output DELAY Value in milliseconds of a pause to be performed DISPLAY 1 displays the result of each measurement 0 executes all the measurements without displaying If omitted defaults to 0 i e NOT DISPLAY DISPLAYONBAD 1 displays the measurement if bad Applies to all the measurements 0 Not active If omitted defaults to 0 DISPLAYTI ME Approximate time of display in ms when in DISPLAY mode 60 Chapter 14 Quality Control IN Sets the input sensitivity if omitted autorange is activated INITIALBITS 8 BIT binary value that will be output at startup before QC script execution INCREASEONBAD 1 Increases serial number when unit is bad 0 Does not increase serial number when unit is bad If omitted defaults to 1 i e increases on bad INTERACTIVE 1 displays the result of each measurement and prompts 0 executes all the measurements without prompting If omitted defaults to 0 i e NOT INTERACTIVE MANUAL 1 starts the QC sequence manually pressing Go 0 the sequence is started by an external trigger signal If omitted
35. SIWYG Enables wysiwyg processing 1 0 Disables wysiwyg processing If omitted defaults to 0 62 Chapter 14 Quality Control 14 10 2 KEYWORDS FOR MEASUREMENTS SETTINGS FFT Starts a section containing the definition of an FFT measurement MLS Starts a section containing the definition of an MLS measurement SIN Starts a section containing the definition of a Sinusoidal measurement MET Starts a section containing the definition of a Multimeter measurement ACQUISITIONDELAY Approximate time in milliseconds that is expected before executing the measurement after switching the generator on Valid only for FFT and Multimeter measurements COMMENT Input a comment used by the report files DCON 1 sets DC voltage superimposed to channel A output active 0 sets DC voltage to 0 If omitted defaults to 0 DCV Value of output DC voltage to be set see DCON DCVQCBOX Value of output voltage to be set see DCON taking into account QCBox gain This is the DC voltage that will be present at QCBox output DISPLAYONBAD 1 displays the measurement if bad 0 Not active If omitted defaults to 0 IN Sets the input sensitivity if omitted autorange is activated LIMITS Name of the limits file LOOP 1 Loops the current Multimeter measurement to let the user perform an adjustment on the unit under test 0 Executes the Multimeter measurement and exits If omitted defaults to 0 MODE DIFFERENCE Executes the measurement referring i
36. a correct comment line COMPANY MY COMPANY this comment is not allowed With these brief notes clear you are ready to write a QC script 14 5 2 HOW TO WRITE MY FIRST QC SCRIPT You may write your script with any text editor that stores plain ASCII files usually txt ones like Notepad the only thing you should remember is that QC scripts must have the qc extension while limits files the lim extension the common behaviour of Windows to hide registered files extensions renders this action sometimes difficult It is not uncommon to believe to have saved a file with say the name myfile qc where you tried to force the extension and then find it actually saved as myfile qc txt because the text editor automatically appended the registered extension You may write your script directly editing it within the QC control panel text display in this case the extension management is guaranteed by CLI Owin and you will be able to use some tools like measurements capture that are of help during everyday job Doing like this it is possible to immediately test the script pressing Go Let s now write our first QC script Have your CLIO system in the same situation as when you perform system calibration output A connected to input A see chapter 3 for details Don t connect any external device to the system Set output level at OdBu and input sensitivity at OdBV see Chapter 5 for details Have default settings loaded Open MLS press Go
37. d a Thiele amp Small parameters check see 14 6 4 A frequency limit file can be applied to an MLS Sinusoidal or FFT test To define a limits file for a Multimeter measurement see later 14 6 2 AVERAGE LEVEL CHECK The following limits file defines an average level check inside the same relative frequency limit shown before RELATIVE LEVEL UPPER 3 LOWER 3 UPPER LIMIT DATA 200 5 300 2 10000 2 15000 5 LOWER LIMIT DATA 200 D 300 2 10000 2 15000 5 When a level check is defined inside a limits file the QC result is actually a combination of two separate checks one is the frequency behaviour of the measurement compared against the frequency mask the second is a level check which compares the average level of the measured curve with the average level of the reference The levels are calculated averaging in the frequency band defined by the limits Fig 14 31 shows such a situation the title of the measurement control panel reports the level check 28 Chapter 14 Quality Control BIMLS Level 0 09dB GOOD oy x cay e eH me B3MLS Level 0 09dB GOOD im Eom ear G 26 nN NT FREQUENCY BAND USED LCULATE LEVEL 70 0 108 0 60 0 180 0 100 1k 10k Hz Figure 14 31 The level check shown means that the value of the measurement averaged in the band shown is 0 09dB
38. e it is possible to make a polarity check within a MLS frequency response measurement or make a T amp S parameters check within an impedance measurement The following script adds the polarity check to the former MLS test MLS REFERENCE MYREFERENCEFILE MLS LIMITS MYLIMITSFILE LIM POLARITY 1 12 Chapter 14 Quality Control CT S LOAD EXECUTE SET QC LOAD LIMITS REFERENCE OPTIONS FILE E gt MEASUREMENT BAD CALCULATE OPTIONAL l4 OPTIONAL PARAMETERS LOOP READY FOR PERFORM MEASUREMENT OUTPUT Figure 14 12 Here is a list of the parameters that can be calculated within each measurement MLS Average or single frequency level Polarity T amp S parameters FFT Average or single frequency level Sinusoidal Average or single frequency level 2nd harmonic response 3rd harmonic response 4th harmonic response 5th harmonic response T amp S parameters Chapter 14 Quality Control 14 4 THE QC CONTROL PANEL Aam o 1 s B DB IGERD Sava 4 GLOBALS COMPANY MY COMPANY TITLE MY QUALITY CONTROL DISPLAY 1 INTERACTIVE 1 SETLOOPA REFERENCE LOOP MLS LIMITS LOOPMLS LIM REFERENCE LOOP MET LIMITS LOOPMET LIM Filename loop ge Figure 14 13 Figure 14 13 shows the Quality Control panel that is composed by a toolbar similar to the other CLI Owin panels plus a tex
39. eeded only when testing Cms Mms Mmd BI Vas dBSPL or ZMin FSLOWER Lower limit for Fs FSUPPER Upper limit for Fs QELOWER Lower limit for Qes QEUPPER Upper limit for Qes 70 Chapter 14 Quality Control QMLOWER Lower limit for Oms QMUPPER Upper limit for Qms QTLOWER Lower limit for Qts QTUPPER Upper limit for Qts CMSLOWER Lower limit for Cms CMSUPPER Upper limit for Cms MMSLOWER Lower limit for Mms MMSUPPER Upper limit for Mms MMDLOWER Lower limit for Mmd MMDUPPER Upper limit for Mmd BLLOWER Lower limit for BI BLUPPER Upper limit for BI VASLOWER Lower limit for Vas VASUPPER Upper limit for Vas DBSPLLOWER Lower limit for dBSPL DBSPLUPPER Upper limit for dBSPL ZMINLOWER Lower limit for ZMin ZMINUPPER Upper limit for ZMin UPPER LIMIT DATA LOWER LIMIT DATA Start a section containing the frequency mask used for the QC check The frequency mask has to be defined as a list of N couples like Frequency_1 Value_1 Chapter 14 Quality Control 71 Frequency N Value N In the case of a multimeter measurement contains several measured parameters value It is possible to load frequency data from an external ASCII text file using the FILE keyword FILE Name of a text file containing a frequency mask definition FREQUENCY Executes a frequency check Valid for a multimeter measurement IMD Executes an intermodulation distortion check Valid for a multimeter measureme
40. have been calculated in Fig 14 15 we see written Level 0 37dB GOOD which reports the result of an average level check done on the measured MLS frequency response 14 4 2 THE QC REPORT PANEL QC Report AUDIOMATICA FIRENZE ITALY PB 4281 QUALITY CONTROL DATE 30 05 02 INITIAL SN 1 TOTAL TESTS 6 GOOD 5 BAD 1 ol TEST REPORT UNIT N 6 GOOD 9 21 34 UNIT N 5 GOOD 9 21 24 ER UNITN4 BAD 9 21 16 1 GOOD SIN CHA LOOP 2 GOOD MET CHA LOOP G BAD SIN CHB LOOP Response BAD Levet 105 360B BAD C clio2000 data pci UTOSA VE 3 sin 4 BAD MET CHB LOOP UNIT N 3 GOOD 3 21 07 sl Figure 14 16 The QC Report panel serves as an interactive tool of great help for inspecting a production while it is tested it is composed by two tree views named STATISTICS and TEST REPORT that handles all the information pertaining to your QC session ina very compact form The QC Report panel can be kept open during the tests and it accompanies the work in a really effective visual form Under STATISTICS you find information about QC test and Company names Date of the first unit tested 16 Chapter 14 Quality Control Name of the production batch First serial number tested Total number of units tested number of goods and bads Under TEST REPORT you find information about DUT test result with serial number and time of production Single tests results Name of the saved files The QC Report panel is also the s
41. higher than the reference average level in the same frequency band The measured curve is shifted of this value and then the frequency check is performed see also 14 6 4 The level shift means that the curve is displayed with a level different from the measured one Refer also to Fig 14 19 As two separate checks are done there may be two distinct cases when a unit results bad The following figures try to explain these two cases Figure 14 32 shows us the case when a unit is testing bad because the frequency behaviour is not good while the average level is OK BJMLS Level 0 15d8 GOOD ioj x eee cs fes f2 octave B3IMLS Level 0 15dB GOOD ii Bos G 10 0 N Figure 14 32 Figure 14 33 instead shows us the case when a unit is testing bad because the average level is not good while the frequency behavior is OK Chapter 14 Quality Control 29 BRMLS 1 Level 5 82dB BAD ioj xi en oe cs mes f2 octave BJMLS Level 5 82dB BAD ADLET TUG 100 1 _ Figure 14 33 14 6 3 ALI GNED MASK The following limits file defines a single point level check with a frequency mask aligned to it ABSOLUTE LEVEL UPPER 3 LOWER 3 ALIGNFREQ 5000 ALIGNLEV 90 UPPER LIMIT DATA 200 300 800 1000 3000 4000 7000 15000 8 LOWER LIMIT D
42. i or met created within its relative menu it contains most of the settings needed to fully configure your measurement As CLI Owin resets the measurement control panel to the settings of the file loaded from disk the QC processor does the same job in this easy but effective way of operating you will be sure that for example the sampling frequency of your QC MLS measure will be the one you chose or the display settings will be the same as when you Saved the reference file And all this is defined inside the QC script with a single text line REFERENCE myreferencefile mls where we imagined that you gave the name myreferencefile to a saved MLS measurement The Limits File is a text file lim extension defining the frequency mask or quantities needed to check the executed measurement The syntax used is the same as the QC script A Limits file can be as simple as UPPER LIMIT DATA 100 5 500 3 5000 1 10000 Fo LOWER LIMIT DATA 100 5 500 o 5000 1 10000 5 In principle nothing else is needed to define the basic measurement here is an example of a section of a QC script defining a MLS measurement MLS REFERENCE MYREFERENCEFILE MLS LIMITS MYLIMITSFILE LIM While performing a QC measurement CLIO can calculate more parameters from the data acquired and have these parameters to concur to the final result As an exampl
43. iew and interact with the test sequence during its execution 6 Chapter 14 Quality Control 40 FG d TITT 1 III T IT 1k 20k 20 100 10k Hz Figure 14 3 Complete test information and report are always presented to the user MY COMPANY MY QUALITY CONTROL DATE 23 05 02 INITIAL SN 1 TOTAL TESTS 26 GOOD 26 BAD 0 EST REPORT T N 40020282 GOOD 17 49 30 GOOD MLS Response GOOD GOOD MET age 0 774 rms GOOD THD 0 004 GOOD UNIT N 40020281 GOOD 17 49 28 IT N 40020280 GOOD 17 49 26 IT N 40020279 GOOD 17 49 25 UNIT N 40020278 GOOD 17 49 23 e EI UNIT N 40020277 GOOD 17 49 21 Figure 14 4 14 2 2 THE ENGI NEER S POINT OF VI EW As the QC is integrated inside the CLI Owin software no new user interface has to be learned by the engineer who has experienced CLIOwin inside her or his research laboratory A quality control test relies on real measurements saved on disk and ona simple text script Figure 14 5 Chapter 14 Quality Control 7 Defining a QC script is easy as it takes writing only few descriptive lines of text no programming languages or complex instructions are involved Bn ELECTRICAL amp ACOUSTICAL TESTS GLOBALS COMPANY MY COMPANY TITLE MY QUALITY CONTROL IDISPLAY 0 INTERACTIVE 1 Epy STATISTICS RR my COMPANY MY QUALITY CONTROL DATE 23 05 02 REFERENCE LOOP MLS INITIAL SN 1 LIMITS LOOPMLS LIM TOTAL TESTS 1 GOOD 1 BAD 0 bi TEST REPORT REFERENCE LOOP MET ERC UN
44. ine The three keywords used to define this operation are CYCLIC REPETITION and CYCLICFIRST under GLOBALS CYCLIC defines the name of the cyclic script this file must reside inthe same directory of the calling one REPETITION defines after how many units it is run we put 4 in the example only for letting you test it this number is chosen after evaluating the particular condition of the production line CYCLICFIRST which in the example is commented away tells the software to execute the cyclic script before Chapter 14 Quality Control 57 the first run of the main script this is useful to set known conditions at the beginning of a QC session GLOBALS CYCLIC ROGERSCYCL QC CYCLICFIRST 1 REPETITION 4 OUT 0 IN 20 The rest of the main script for producing my LS3 5As deals with the three actual measurements for testing nearfield farfield and impedance data the first two are done with MLS the third with Sinusoidal Before each measurement definition the relative commands that set the correct function of the Amplifier amp SwitchBox note that the impedance is done in ISense mode SETINPUT2 MLS REFERENCE NEARFIELD MLS LIMITS NEARFIELD LIM SETINPUTI1 MLS REFERENCE FARF IELD MLS LIMITS FARFIELD LIM SIN OUT 6 0 IN 30 REFERENCE IMPEDANCE SINI
45. ions The typical example is the reference loudspeaker tested every 100 production units have passes the QC test LOAD QC SCRIPT SHOW MEASUREMENT IF DISPLAY WAIT FOR USER MANAGE MODE OR TRIGGER TO PERFORM AUTOSAVE OR RESULT START QC TEST MEASUREMENT AUTOEXPORT GOOD SHOW AND PROMPT IF INTERACTIVE YES MODE EXECUTE SHOW CYCLIC SCRIPT Si ge ENR DISPLAYONBAD REPORT TAKE USER STATISTICS DEFINED amp BATCH ACTIONS MANAGEMENT CONDITIONED BY THE RESULT OF THE SINGLE MEASUREMENT TAKE USER QC TEST DEFINED BAD ACTIONS CONDITIONED BY THE RESULT OF ALL QC TEST MEASUREMENTS GOOD YES Chapter 14 Quality Control 11 YES NO ALL RESULTS GOOD MEASUREMENTS Figure 14 11 The third diagram in Fig 14 12 shows us how the single QC measurement is performed As said before CLI Owin QC relies on the measurements present in the standard version of the software the possible measurements within QC are MLS MLS FFT FFT Sinusoidal SI NJ and Multimeter MET we have now put in evidence the keywords that define the tests inside the script To understand this operation we must define two files the Reference File and the Limits File these files are the heart of the QC operation together the QC Script they contribute to define all the parameters of the single measurement The Reference File is a standard CLI Owin measurement file extension mis mis fft sin sin
46. ith normal binary format If omitted defaults to 0 SAVETEXTPARAM Controls the number of saved frequency points valid only for MLS 0 saves 256 points 1 saves 512 points 2 saves 1024 points 3 saves 2048 points If omitted defaults to 0 i e 256 points 64 Chapter 14 Quality Control 14 10 3 KEYWORDS FOR CONDI TI ONAL EXECUTION PERFORM Starts a section always executed unconditioned by the result of the preceding measurement See below for the keywords possible within IF LAST GOOD IF LAST BAD Starts a section conditioned by the result of the preceding measurement IF parameter GOOD IF parameter BAD Starts a section conditioned by the result of one particular parameter measured during the preceding measurement Parameter can be one of the following 2HARMONIC 3HARMONIC 4HARMONIC 5HARMONIC FREQUENCY FS IMD LEVEL POLARITY QTS QES QMS RESPONSE PRESSURE THD VOLTAGE IF ALL GOOD IF ALL BAD Starts a section conditioned by the global result of the QC sequence Note The following keywords apply to any kind of section for conditional execution BIT Number of the bit to be singularly controlled with BITVALUE BITVALUE Status 1 or 0 of the bit defined with BIT 8BITVALUE 8 BIT decimal value to be output by the currently selected parallel port ABORT Stops the script execution after executing all keywords in the current section Result is forced bad See also STOP CLOS
47. lready seen it is of fundamental importance to correctly set CLIO s input sensitivity and output level see 5 4 The IN and OUT keywords are used for this The script below sets the input sensitivity at 10dBV and output level at OdBu These numbers directly appear also in the main tool bar of CLI Owin IN 10 OUT 0 The OUTUNITS keyword can be used under GLOBALS to define the output level unit of measure you may choose either V dBV or dBu default is dBu To output 1V simply write GLOBALS OUTUNITS V OUT 1 Ifyou feed the output to a power amplifier the resulting signal at amplifier terminals will be amplified by the gain of the amplifier It is possible to take this effect into account and specify the output level directly at the amplifier in the particular case you are using a CLIOQC Amplifier amp SwitchBox The following script can be used to set 2 83V at the output of the amplifier GLOBALS OUTUNITS V OUTOCBOX 2 83 14 8 2 SC 01 DC OUTPUT CONTROL The SC 01 Signal Conditioner has the capability of superimposing a DC voltage to the generated signal see 5 4 It is possible to manage this DC voltage with the DCON and DCV keywords The script below sets a 0 5V DC at SC 01 channel A output PERFORM DCV 0 5 DCON 1 If you feed the output of the SC 01 to a DC coupled amplifier the resulting DC voltage if present at amplifier terminals will be amplified by the gain of the amplifier It is possible
48. m extension declared in the qc file Process files mpro or spro are also involved here and these are the only ones not specifically QC related It is a good idea to dedicate a directory for each QC test The files involved here are PREOL OG 46 Chapter 14 Quality Control LEV1 LIM A LIM B LIM C LIM ASHIFT SPRO You can find them in the DATA EXAMPLE1 directory under the installation directory GLOBALS INTERACTIVE SAVEONBAD 1 COMPANY AUDIOMATICA S R L FLORENCE TITLE PREO1 TEST PROCEDURE MESSAGE FILTER OFF DIP ON OFF OFF OFF PERFORM MESSAGE FILTER ON D IP ON OFF OFF OFF vs SG I ENCE FILTER LIMITS LEV1 LIM LOOP 1 PERFORM MESSAGE FILTER ON MET OUT 17 56 IN 10 D IP ON OFF OFF ON REFERENCE FILTER LIMITS LEV1 LIM SIN OUT 10 IN 10 REFERENCE A SIN LIMITS A LIM PERFORM MESSAGE FILTER ON SIN OUT 10 IN 10 D PROCESS ASHIFT SPRO IP OFF ON OFF ON Chapter 14 Quality Control 47 REFERENCE A SIN LIMITS B LIM PROCESS ASHIFT SPRO
49. n of loading the QC script from disk that begins our quality control session then CLIO waits that the user or an external trigger for example a TTL signal from the automation controller gives the actual start to the QC test the measurements defined are then executed in sequence until the last is reached the result of the test is given by the sum of all the checks done inside the test sequence it is good only is all checks gave positive result the QC test ends updating report and statistics while managing the production batch the next device can then be put under test To proceed further it is advisable to go into a greater detail of the former block diagram this is done in Fig 14 11 and 14 12 Fig 14 11 zooms the entire QC test sequence adding the blocks in red while Fig 14 12 zooms the Perform Measurement single block the blue one Three different operating modes are here outlined the DISPLAY mode the INTERAC TIVE mode and the DISPLAYONBAD mode If none of these modes is active the QC test proceeds without any measure ment shown with simple go no go masks as in Fig 14 1 If DISPLAY mode is active then the executed measurements are shown and persist on the screen for a definable amount of time the test automatically proceeds until the end Fig 14 2 depicts such a situation 10 Chapter 14 Quality Control If INTERACTIVE mode is active the executed measurements are shown and then the software prompts for user input The
50. nt PRESSURE Executes a sound pressure level check Valid for a multimeter measurement THD Executes a total harmonic distortion check Valid for a multimeter measure ment VOLTAGE Executes a voltage check Valid for a multimeter measurement 2 UPPER LIMIT DATA 2 LOWER LIMIT DATA 3 UPPER LIMIT DATA 3 LOWER LIMIT DATA 4 UPPER LIMIT DATA 4 LOWER LIMIT DATA 5 UPPER LIMIT DATA 5 LOWER LIMIT DATA Start a section containing the frequency mask used for the QC check of the single harmonics of a sinusoidal frequency sweep The presence of the relative section defines the QC check The frequency mask has to be defined as a list of N couples like Frequency_1 Value_1 Frequency_N Value_N It is possible to load frequency data from an external ASCII text file using the FILE keyword FILE Name of a text file containing a frequency mask definition 72 Chapter 14 Quality Control REFERENCE DATA Start a section containing the frequency response used as reference if present substitute data taken from the reference file as defined in 14 3 The frequency mask has to be defined as a list of N couples like Frequency_1 Value_1 Frequency_N Value_N It is possible to load frequency data from an external ASCII text file using the FILE keyword FILE Name of a text file containing a frequency mask definition Chapter 14 Quality Control 73 74 Chapter 14 Quality Control
51. o the executable defined with EXTERNAL Some parameters relative to the QC tests can be passed with the following acronyms SERIALNUMBER passes the current serial number RESULT passes the current result LASTRESULT passes the last test result GLOBALRESULT passes the global test result PARAMETER2 String to be passed as second parameter to the executable defined with EXTERNAL See also PARAMETER1 above PARAMETER3 String to be passed as third parameter to the executable defined with EXTERNAL See also PARAMETER1 above 66 Chapter 14 Quality Control PARAMETER4 String to be passed as fourth parameter to the executable defined with EXTERNAL See also PARAMETER1 above PRINT Prints the current measurement The default Windows printer is used SERIALOUT ASCII text to be sent to serial device You may use some acronyms preceded by SERIALNUMBER is translated in the current serial number DATE is translated in the current date TIME is translated in the current time SERIALOUTFILE Name of an ASCII file containing text to be sent to serial device STOP Stops the script execution after executing all keywords in the current section Result is unaltered See also ABORT WAITCOMPLETI ON 1 The QC script wait for the external program to end before continuing execution 0 The QC sequence continue without waiting If omitted defaults to 0 Chapter 14 Quality Control 67 14 10 4 KEYWORDS FOR HARDWARE CONTROL
52. ounts for A Frequency response measurement B Sensitivity check C Impedance measurement D T amp S parameters check E Batch management with statistics F Autosaving of all measured drivers GLOBALS COMPANY MY COMPANY TITLE 133MM DRIVER QUALITY CONTROL AUTOBATCH 1 STATISTICS 1 AUTOSAVE SETINPUTI SIN OUT 0 0 IN 10 REFERENCE RESPONSE SIN LIMITS RESPONSE LIM Chapter 14 Quality Control 53 SIN OUT 0 0 IN 10 REFERENCE IMPEDANCE SINI LIMITS IMPEDANCE LIM Inside the RESPONSE LI M file we find the section defining the sensitivity check LE UPPE LOWE S EL R 3 R 3 EL 2 Inside the IMPEDANCE LI M file we find the section defining the T amp S parameters check with the KNOWNMMD keyword we implements the simplified estimation method fixing the driver s mass value The parameters tested are Fs Qts Vas Bl Cms and Zmin TSPARAMETERS REDC 3 DIAMETER 133 KNOWNMMD 19 75 FSUPPER 55 FSLOWER 45 OTSUPPER 0 6 OTSLOWE BLUPPEI BLLOWER ZMINUPPE ZMINLOWEI VASUPPER VASLOWER 1 CMSUPPEI CMSLOWE You can find the files of this example in the DATA EXAMPLE4 directory under the installation directory 54 Chapte
53. ows information about the executed tests Ku fin Script Text display mode captures the active measurement generating a piece of script file relative to the currently loaded reference and limits files The text is inserted at cursor position As an example the following text is generated in the assumption that you have MLS open with the active measurement saved as myreferencefile mls and that you have loaded the mylimitsfile lim inside QC also captured are output level and input sensitivity here assumed to be 0dBu and 0dBV respectively MLS OUT 0 0 IN 0 REFERENCE MYREFERENCEFILE MLS LIMITS MYLIMITSFILE LIM I fin Limits Text display mode captures the limits file of the active measurement loading it inside the QC display FgyCreates the frequency curves relative to the limits file under editing and shows them in the active measurement control panel _ Enables the Draw Limits controls that let you visually input the frequency limits directly drawing on the active measurement control panel Fig 14 14 shows the MLS control panel with the Draw Limits controls on the top Clicking on one of the two buttons starts drawing of the relative limit curve to finish input double click on the last frequency point Note it is mandatory to input points from left to right
54. pci Data My gqc My Batch 101_1 mls 2 GOOD MET Voltage 0 775Vrms GOOD THD 0 006 GOOD C Program files Audiomatica Cliowinpci Data My gqc My Batch 101_2 met The files serialnumber txt describe the single QC test and look like this 1 GOOD MLS Response GOOD 2 GOOD MET Voltage 0 775Vrms GOOD THD 0 006 GOOD 06 06 02 6 46 24 UNIT N 102 GOOD 14 7 3 AUTOSAVED DATA FILES Again supposing we are in the situation of the preceding paragraph let s see how data files are saved As it can be seen from the report files our QC test consists of a MLS and a Multimeter measurement As the MLS test is defined before the Multimeter inside the script then it assumes number 1 as single QC test while the Multimeter test assumes number 2 this is already clear from the report files above After two units tested we find the following measurement files 101_1 mls 101_2 met 102_1 mls 102_2 met As you see the QC single test numbering is integral part of the name of the autosaved data file 14 7 4 WYSI WYG OPERATI ON Wysiwyg i e what you see is what you get operation is the way the QC processor saves and exports data files while executing quality control Setting WYSI WYG 1 under GLOBALS results in files saved as you see them on screen with all the processing Chapter 14 Quality Control 37 peculiar to QC applied For example if a frequency response is executed with MODE D
55. quivalent to E New QC script Equivalent to Edit QC script Equivalent to F2 Saves QC script Equivalent to f 20 Chapter 14 Quality Control CTRL E Ends an editing session while inside the text display CTRL C Copy selected text CTRL V Paste selected text CTRL X Cut selected text CTRL Z Undo redo text input Q Show QC script Equivalent to qt L Show Limits Equivalent to l I Show Information Equivalent to H Hide Limits Equivalent to W M Release measurements Equivalent to i r 14 4 7 QC REGISTERED FILE EXTENSIONS CLI Owin Quality Control registers the following files extensions beyond the ones already registered by CLI Owin QC script files QC Limits files Chapter 14 Quality Control 21 14 5 MY FIRST QC SCRI PT 14 5 1 WHAT TO KNOW ABOUT QC SCRIPTS A quality control script is a text file that stores information in logical groupings called sections Each section is initiated by a bracketed keyword in the form keyword Within each section QC definitions are stored in named keys Keys within a section take the form keyword value For example the section called GLOBALS defines several settings useful all along the test sequence GLOBALS COMPANY MY COMPANY TITLE MY QUALITY CONTROL BATCH MY PRODUCTION BATCH NAME It is possible to input comment lines initiated by a semicolon It is not possible to start a comment after a keyword this is
56. r 14 Quality Control 14 9 5 EXAMPLE 5 A LARGE SI ZED PRODUCTION OF A 2CM TELEPHONE DRIVER Out CLIO Personal Computer LPT Bit6 Bit 7 PASS FAIL READY START PRODUCTION LINE AUTOMATION ere SYN GOD BAD Figure 14 49 We describe here the quality control test of the production of a 2cm telephone driver The test setup in Fig 14 49 shows us a fully automatic test environment where CLIO is interacting with a production line automation controller The automatic interaction is instructed with the MANUAL keyword which tells the QC processor to start when triggered by the external automation on the other end the signals generated by CLIO tell to the automation controller the result of the test and the ready status GLOBALS MANUAL 0 INITIALBITS 0 OUT 3 0 IN 10 MLS REFERENCE RESPONSE MLS LIMITS RESPONSE LIM POLARITY 1 r IF ALL GOOD Chapter 14 Quality Control 55 D D HoH lt Il DP I d G Sal ll Oo kal D 1 bd gt UO UJ T I f HH ll IFI ITVALUE 0 D ge ll E UJ H lt gt z UE 1 MW D cc J J d H II CH You can find the files of this example in the DATA EXAMP
57. r Input Lo Figure 14 47 The test setup of Fig 14 47 shows us the application of an 8 input CLIOQC Model3 Amplifier amp Switchbox to assess the quality of a production of a 4 ways crossover The following self explaining script implements the procedure required to tests the frequency response of each way to be noted are the unique input and output settings under GLOBALS GLOBALS COMPANY MY COMPANY TITLE 4 WAYS CROSSOVER QUALITY CONTROL OUT 0 0 IN 10 SETINPUT1 MLS EFERENCE LO MLS IMITS LO LIM Kl H SETINPUT2 MLS REFERENCE MIDLO MLS LIMITS MIDLO LIM SETINPUT3 MLS REFERENCE MID MLS mH IMITS MID LIM Chapter 14 Quality Control 51 SETINPUT4 MLS REFERENCE HI MLS LIMITS HI LIM You can find the files of this example in the DATA EXAMPLE3 directory under the installation directory 52 Chapter 14 Quality Control 14 9 4 EXAMPLE 4 A MEDI UM SIZED PRODUCTION OF A 13CM DRIVER INPUT A CLIO Zon OUTPUT B From CLIO CLIOQC Ampli SwitchBox DUT ISense e To CLIO Mic Speaker TT Figure 14 48 We describe here the quality control test of the production of a 13cm woofer Fig 14 48 This procedure acc
58. rinter port This operation is controlled by the External Trigger button 77 in the QC control panel and by the MANUAL keyword inside the QC script Fig 14 41 shows a foot pedal switch and diagrams its connection to the PC to obtain the control of the QC test PC LPT Stat KSE Figure 14 41 Chapter 14 Quality Control 41 The QCBox Model4 has a dedicated input PEDAL IN that can be used to connect the external foot pedal or trigger signal The following lines are needed inside a script file to enable a switch or externally generated TTL signal to start and continue a QC measurement GLOBALS MANUAL 0 Please refer to 14 8 7 and to the commands reference for more details on TTL input signal management 14 8 5 SIGNALS GENERATI ON It is possible to define the status of the bits of the active parallel port thus generating TTLsignals controlled by the software the following is a list of the kind of signals possible signals output at startup INITIALBITS signals conditioned by the result of a single measure IF LAST GOOD IF LAST BAD signals conditioned by the global result IF ALL GOOD IF ALL BAD unconditioned signals PERFORM Let s see an example of generation of external signals conditioned by the result of the measurement GLOBALS INITIALBITS 0 FFT MLS IF LAST BAD BIT 3 BITVALUE 1 DELAY 200 IF LAST GOOD BIT 3 BITVALUE 0 DELAY 200
59. rk or with custom written software to realize a fully automatic line test 14 2 FEATURES OF CLIOWIN QC CLIOwin QC is exceptionally powerful as it relies on the power of CLIOwin Some of the measurements possible Frequency response with MLS Impedance with MLS Polarity Frequency response with Sinusoidal Sweep Impedance with Sinusoidal Sweep Single harmonic response with Sinusoidal Sweep Narrowband FFT analysis with definable stimulus T amp S parameters Sensitivity Frequency THD IMD Noise The application of single measurements or the combination of more give the best answer to complex topics like rub amp buzz testing Some of the QC management features are better explained starting from the various subjects taking part to this complex operation and from their points of view The operator working on the line The quality control engineer responsible for production line operation The company and its managers controlling the overall process Chapter 14 Quality Control 5 14 2 1 THE OPERATOR S POINT OF VI EW A quality control test can be controlled by simple Go NoGo masks letting even the least experienced operator work without problems and with a zero time learning curve AUDIOMATICA CLIO QC PROCESSOR Figure 14 1 A more complex operation foresees the continuous display of the measurements executed until the reaching of the final result B eT Figure 14 2 A third possibility is to v
60. sequence is not continued until the user executes particular actions It is also possible to loop certain measurements for D U T tuning see Fig 14 12 Fig 14 3 depicts such a situation If DISPLAYONBAD mode is active then the executed measurements are shown only if their result is not good The sequence is stopped for user acceptance Fig 14 11 shows also the Autosave management which is of great importance for controlling the production and characterizing a batch This feature is completely user definable allowing for binary or text files operation conditioned by the test result coherence with serial number and single test number the operator can also be prompted for file name input Two blocks are devoted to the execution of particular actions conditioned by the result of the single test or the result of all tests Among these we find messages to the operator print of the measurement execution of custom written software generation of TTL signals to manage automatic lines pause for a predefined amount of time stop the sequence The last red block right before the end of the QC test represents the Cyclic Script The cyclic script is a particular sequence of QC operations described and saved ina script file that is executed regularly after a certain number of QC tests have been executed this is useful for retesting reference quantities that characterize the entire process and maintain traceability to environmental condit
61. t display area that is used either for editing the QC files QC script and Limits file or for showing information about the QC test When the QC display handles file editing it has a white background while when showing information it is lightly coloured 14 4 1 TOOLBAR BUTTONS Tei Starts a OG test Enables tracing of the QC script during execution If pressed during test execution the QC control panel is not minimized and remains visible showing the current script section under execution fmalrorces the QC result panel to be displayed after tests completion Refer to 14 4 3 for more details a Enables external trigger This button overrides the setting in the script MANUAL keyword See 14 8 2 and the commands reference for more details w Skips the last measured unit Sn Used to input the current device serial number EI Recalls the QC Report panel Refer to 14 4 3 for more details A Starts a new QC script editing session The text present is cancelled Edit the current text 14 Chapter 14 Quality Control Ki mmediately saves the current text as Script or Limits file at Enters the Script Text mode The QC display presents the currently loaded QC script file irEnters the Limits Text mode The QC display presents the currently loaded Limits file Enters the Information Text mode During tests the QC display shows the current QC script section under execution When the test sequence is finished the QC display sh
62. t to the reference file Valid only for MLS and Sinusoidal measurements NORMAL Executes the measurement normally If omitted defaults to NORMAL OUT Sets the generator output level with OUTUNITS defined under GLOBALS OUTQCBOX Sets the generator output level taking into account QCBox gain with OUTUNITS defined under GLOBALS This is the level that will be present at QCBox output POLARITY 1 Executes a polarity check Valid only for an MLS measurement O Not Active If omitted defaults to 0 PROCESS Name of a process file to be applied to the test Valid only for MLS and Sinusoidal measurements Chapter 14 Quality Control 63 REFERENCE Name of the reference file SAVEBINARY 1 saves also in binary format if SAVETEXT 1 Ignored if used alone Ifomitted defaultsto 0 Remember that if neither SAVETEXT nor SAVEBINARY are specified the default format is binary SAVENAME Name of the file to be saved SAVEONBAD 1 automatically saves the current measurement if bad 0 Not active If omitted defaults to 0 Refer also to AUTOSAVE SAVEONGOOD 1 Autosaves the current measurements if result is good 0 Does not perform autosave If omitted defaults to 0 If you want to autosave also in case of bad measurement add the keyword SAVEONBAD 1 SAVEPROMPT 1 Prompts the user for file name input 0 Autosaves without prompting If omitted defaults to 0 SAVETEXT 1 saves ASCII file instead of binary format 0 saves files w
63. tarting point for reviewing a saved measurement as described below The name of the saved file is a sensible area where you can double click to review the measurement 14 4 3 REVIEWING A MEASUREMENT During a QC tests session it is possible to review a measurement that has been saved to disk This is important when for example trying to understand why a measurement went bad As we saw before the QC report panel indicates all the name of the files that have been created during the test execution under the relative serial number and single test number 1 GOOD SIN CHA LOOP 2 GOOD MET CHA LOOP 3 BAD SIN CHB LOOP 4 BAD MET CHB LOOP Voltage 85 02dBY BAD Frequency 151Hz BAD THD 61 101 GOOD C clio2000data poWQUTOSA YEW A met UNIT N 3 GOOD 9 47 23 Figure 14 17 As soon as a QC sequence is terminated simply open the tree view of your interest identify the measurement you want to inspect and double click on its name Fig 14 17 CLIO loads the measurement as if it were performed inside the running QC together with its pertinent limits and executes all the calculations defined in the QC script ending with the result check and display Fig 14 18 describes such a process compare it with Fig 14 12 DOUBLE CLIK LOAD ON REPORT LOAD LIMITS REFERENCE TREE VIEW FILE FILE UNIT N 4 BAD 9 47 32 4 4 7 LOAD MEASUREMENT FROM DISK BAD DISPLAY
64. the script CLIOwin automatically creates one or more directories under My qc There are four cases depending on the option you set 1 No Autosave is active A Batch is not defined CLI Owin creates the Report directory where all the production report files are saved Fig 14 37 shows this situation 2 Autosave is active A SaveFolder is not defined A Batch is not defined CLI Owin creates the Report directory where all the production report files are saved It also creates the Autosave directory where all data files are saved Fig 14 38 shows this situation E Program Files Ba Program Files CC Audiomatica a Audiomatica GC CH Cliowinpci 71 Clowinpei I EH Cal OH Cal G9 Data GC Data GC My ge D My qc of Autosave a Report a Report CJ Help of Help i CJ Signal I OJ Signal Tables CJ Tables 2 Temp sf Temp Figure 14 37 ET 14 38 3 A Batch is defined and is named My Batch A SaveFolder is not defined CLI Owin creates the My Batch directory where all the production report and also data files are saved Fig 14 39 shows this situation 4 A SaveFolder is defined and is named My Savefolder CLI Owin creates the My Savefolder directory where all the production report and also data files are saved Fig 14 40 shows this situation Chapter 14 Quality Control 35 Ao Program Files Program Files Aa Audiomatica CC Audiomatica B Clowinpei GC Cliowinpei 0 Cal i OC UO Data I DI Data
65. ting the frequency mask after the limits file is loaded into memory You can see that the frequency data saved under UPPER LIMIT DATA and LOWER LIMIT DATA are treated differently if the limits is absolute or relative see 14 6 1 or if an align point is defined see 14 6 3 LOAD LIMITS FILE GET REFERENCE DATA os CALCULATE LIMITS CURVES GET ALIGN POINT DATA Moe Figure 14 27 Fig 14 28 shows us the way a frequency check is performed and the measurement is presented on screen You may appreciate the presence of an average level check see 14 6 2 ora single point aligned level check see 14 6 3 that concur to the final result When a level check is defined either the measured curve or the limits curves are shifted if presented on screen in this way it is possible to appreciate the frequency behaviour of the measured curve without the effect of a difference in sensitivity which is checked apart AVERAGE NO LEVEL CHECK S SHIFT MEASUREMENT CHECK SHIFT LIMITS CURVES Me ne YES YES CALCULATE LEVEL ALIGN POINT Keier NO CALCULATE LEVEL IN LIMITS BAND VW y Figure 14 28 26 Chapter 14 Quality Control As a final but not least important note on how to define a limits file it is possible to input the frequency mask as a text file as below UPPER LIMIT DATA FILE UPPER TXT LOWER LIMIT DATA FILE LOWER TXT
66. to take this effect into account and specify the DC voltage directly at the amplifier in the particular case you are using a CLI OQC Amplifier amp SwitchBox The following script can be used to have 5V DC at the output of the amplifier 40 Chapter 14 Quality Control PERFORM DCVOCBOX 5 DCON 1 14 8 3 CLI OQC AMPLI FI ER amp SWI TCHBOX CONTROL Using a CLI OQC amplifier amp switchbox it is possible to setup powerful QC environment like the one depicted in the example 6 see 14 9 6 where it is shown the simultaneous control of near and far field responses and impedance Custom controls have been implemented to easily control all the internal functions of this unit SETINPUT1 Selects input 1 of the CLI OQC Ampli amp SwitchBox SETINPUT2 Selects input 2 of the CLI OQC Ampli amp SwitchBox SETINPUT3 Selects input 3 of the CLI OQC Ampli amp SwitchBox SETINPUT4 Selects input 4 of the CLI OQC Ampli amp SwitchBox SETINPUT5 Selects input 5 of the CLI OQC Ampli amp SwitchBox SETINPUT6 Selects input 6 of the CLI OQC Ampli amp SwitchBox SETINPUT7 Selects input 7 of the CLI OQC Ampli amp SwitchBox SETINPUT8 Selects input 8 of the CLIOQC Ampli amp SwitchBox SETIMPEDANCE Selects impedance mode of the CLIOQC Ampli amp SwitchBox SETISENSE Selects Sense mode of the CLIOQC Ampli amp SwitchBox 14 8 4 EXTERNAL TRIGGER It is possible to trigger the QC tests sequence with an external TTL signal wired to the PC parallel p

CLIOwin 6.5 QC Software Extension User`s Manual

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