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Lindos Lin4WinXP User Manual

1. 44 Appendix B New Features If you are upgrading from an earlier version of Lin4WinXP previously Octolin the new features are listed below 1 54 New in V2 0 1 MiniSonic support added 1 55 New in V5 10 1 Support for multiple graph types added New options for each graph type Quick Scale buttons added to toolbar Quick sequence box added Redraw problems fixed Graph cursor added to Big Graph Viewer oy ton 1 56 New in V5 24 1 Save options 2 Tolerance options 3 Quick tolerance buttons added to toolbar 4 Upload to test sheet database facilities 5 MiniSonic phase plot support 6 MiniSonic delay measurement support 7 Heading and comments systems revamped 8 New MiniSonic sequence definition facilities 9 Save web page option 10 Automatic Userkey file downloading 1 57 New in V5 30 1 Frequency response graphs comparison tool 2 Results cut and paste capability 3 New normalising options text graph 4 Grid line width option added 45 Appendix C File Formats All future software will adhere to these file formats which have been carefully designed to be extendable and transportable between operating systems If you write your own software to generate such files you are strongly urged to use these formats The formats described here are also compatible with the results format described in Lindos application note 17 Paul Skirrow third Edition 31 Aug 93 Whenever plain ASCII text appears in a file the lines a
2. Device Seq Tol Options Window Help l x MWS 26 oe ot BARRE KD ean LINDOS AUDIO SEQUENCE TEST Lindos LA188 Control SOURCE 8881A LA162 8881 U6 5 87 Jul 95 63 35 PH SEGHENTS TRCINZ TRCIN Demonstration Results FREQUENCY RESPONSE R 16dB 30Hz 0 44 0 41 40Hz 0 38 0 32 5 Hz 0 30 0 36 63Hz 0 25 0 33 100Hz 0 16 0 15 125Hz 0 06 0 15 250Hz 6 66 0 04 5 08Hz 6 66 0 04 1kHz 6 66 6 66 2kHz 0 04 0 02 4kHz 0 07 8 18 3kHz 0 07 0 34 8kHz 0 09 0 54 10kHz 0 13 0 80 12 5kHz 0 04 1 05 14kHz 6 66 1 20 F EEE D EA T E A E E E BN E E E E 15kHz 8 02 1 33 60 100 200 500 10k 20k 1 kHz 86 09 1 65 48kHz 0 52 2 36 FREQUENCY RESPONSE R 104B left 20kHz 1 81 4 02 FREQUENCY RESPONSE R 104B right TEST LEVEL OUT T 84dB 0 22 6 86dBu NOISE CCIR 468 4 Q Pk rel N PK WID 96 8 90 2 PK UNW 103 1 86 0 MN WTD 97 1 90 4 CROSSTALK rel C 8dB 4OHZ 112 8 87 166Hz2 105 7 89 315HzZ 112 6 82 1kHz 114 7 73 3kHz 110 6 58 10kHz 107 9 54 DISTORTION I 8dB 166 8 86 8 89 Results may be saved using the File Save menu or by clicking on the Save button the floppy disc icon Ctrl O and Cirl S can also be used to access the open and save dialogs quickly 1 7 Results Display Sequence results are shown in a window with the graphs beside th
3. E A unts Worldpay Cur Con Reg G Coop Arba Fauts Google j Tel 44 0 1394 380307 Fax 44 0 1394 385156 E mail info lindos co uk Lindos Electronics Saddlemakers Lane Melton Woodbridge Suffolk IP12 1PP UK Home Pricing Products Downloads Articles 7 Test Sheet Database Distributors Testit Welcome to the Lindos Test Sheet Database 24 June 2005 Anyone can view a results sheet by simply clicking on the links below view as html To contribute to the database assuming you have a Lindos unit first click New Account to register with the database Then use the upload feature available in Lin4Win versions 5 16 and above to publish your results Use the search facilities below to find particular results sheets Listings can be sorted by Make Model Equipment Type and Owner who published the sheet Textual searches can be made using the search bar below for example typing Cassette and either clicking GO or pressing return will list all the result sheets for cassette decks Use the view menu to select the layout and format of the data Click the Go button to make the new settings take effect View full Sort by Make Search Go Login New Account Help CELESTION SL 600 new Speaker EXCELLENT small speaker On back on quilt front Click link to view as html Pete Skirrow 200mm off grass No EQ applied mic slightly above Merry Halfspace Mic tweeter axi
4. The volume may be changed by dragging the slider or by clicking to the left or right of it to decrease or increase the volume The Automagic option can be enabled to make the software automatically set some obvious options For example when measuring crosstalk it will automatically change the output channel if the input channel is changed and when measuring distortion it will automatically choose the relevant distortion option if the LA101 frequency is changed 26 Special LA100 Frequency Sweeps 1 36 Running a Frequency Sweep Choose Frequency sweep from the Device menu or click on the SWP button to display the frequency sweep controls ia Graph iewer Ka azi iol x 20 50 100 200 500 4k 2k 5k 10k 20k FREQUENCY RESPONSE U OdB left n i Ri x FREQUENCY RESPONSE U OdB right a Frequeniiga 10 x Type U 20 20kHe 5s 7 Frequency Hz Left dB Right dB 5787 a Be Level DN eee IV Repeating dP adar C C Bi J 20 20kHz filter gt gt id bad Biog MV Show big graph 3rd fine Normalised to 1kHz p Sweep Cancel Stop Frequency sweeps can be run as part of an automatic test sequence and most of the supplied test sequences include a frequency sweep test but it is often more convenient to use the Frequency sweep menu especially as it allows repeating sweeps Th
5. clicking the Seq or Setup buttons on the Control panel by choosing Seq Run seq from the Menu bar or by clicking the SEQ button on the toolbar on the main The sequence can be specified using any of the following methods 1 Choose a Sequence bank from the drop down bank menu and then choose a sequence from the drop down sequence menu 2 Click in the Sequence field and enter a sequence number Note that 13 sequence numbers 1 10 are used defined sequences 11 20 are the Lindos defaults etc 3 Click in the Sequence field and enter the segment For example TRCINZ could be entered directly in to this field Note that the 10 user defined sequences in the LA101 will be preserved and not overwritten Click the Run button to make the LA100 run the specified sequence If the sequence fails or an error occurs refer to the troubleshooting section in appendix A Various sequence options may be specified before running the sequence The Channels buttons can be used to make the test sequence run on the left right or both channels Note that the left input of the LA102 is always used to decode FSK so the left LA102 input must always be connected even if the test is only being performed on the right channel of a system See section 3 11 on page 48 of the Lindos LA100 manual for more details Monitor volume can be used to set the volume of the LA102 loudspeaker but it cannot be adjusted once the sequence is running 22 22kHz filter switch
6. current state Clicking on Left or Right turns that channel on or off while clicking Mute turns both channels off or restores the previous state if they are already muted When a channel is off the output is muted and terminated through a resistor so the output impedance is not affected 23 1 27 Keyboard Shortcuts The following keyboard shortcuts work when the panel is selected as the current window F1 Frequency down 3 octave steps or fine if shift is held F2 Frequency up 3 octave steps or fine if shift is held F3 Level down 1dB or fine if shift is held F4 Level up 10B or fine if shift is held F5 Range down F6 Range up Alt L Measure left channel Alt R Measure right channel 1 28 Frequency Phase and Level Measurements The Level Frequency and Phase measurements are updated in real time to show the values that the device is measuring Note that when using an LA100 the Frequency and Phase measurement can be enabled or disabled by using the Freq button see section 1 33 for further details When measuring level using a MiniSonic the Left and Right channels are measured simultaneously and displayed as two separate bar graphs and two numeric values The LA100 however only measures level on one channel unless Level option 4 is selected in which case both channels will be displayed Since this requires rapid switching of the channel relays the update rate is rather slow When using an LA100 or when measuring Noise Crossta
7. future logins Anyone can set up an account and immediately upload results sheets the uploaded test results will become public once the account has been approved by Lindos 1 51 Uploading Test Results After testing an item of equipment using the most appropriate test sequence the Equipment Type details and comments should be entered by double clicking on the results text see section 1 43 Comments should be constructive and aimed at helping the manufacturer as well as the user Lindos will remove any entries it considers unsuitable Users can edit entries they created but cannot edit other user s entries Select the results sheet to be uploaded by clicking on it and then click on the world icon at the right of the toolbar to open the Login window w Login Online Test Sheet Database x Contact Name J oe Bloggs J Remember username and password UserName fioe Batch publish Password vi Enter your username and password then click Publish If you don t have an account click Open Database then New Account on the webpage Open Database Cancel Publish Enter your contact name to be shown in the database and the user name and password that were used to create the account and click Publish to upload the results Progress messages will be displayed as the results are 41 uploaded This process should take only a few seconds using broadband or 30 seconds on a modem lf Remember username and pa
8. is not responding Ensure that the LA100 or MiniSonic is plugged into a serial port and check the Comms settings on the Options menu If using an LA102 set the baud rate configuration B7 9600 baud as follows hold ON OFF and press 2 press PAGE or dB gt until the cursor is under the letter R and then press 2 to select 9600 baud Repeat this process on the LA101 Although the LA100 Control software will attempt to communicate at all possible baud rates there are some slow baud rates that the PC cannot use LA102 responds but LA101 doesn t and sequences fail Ensure that both units are connected and that they both display REMOTE 9600 when under PC control If the LA101 displays a different number then set its baud rate configuration as described above Serial Port COIMx is Not Available The program has been configured to use a serial port which is not fitted or which is in use by another program LA100 needs a firmware update This program will only work with LA100 units fitted with V6 0 or later firmware Please contact Lindos Electronics for a firmware update if you see this message The LA100 serial number and version number are displayed on the LCD when the unit is switched on LA100 is in use This error indicates that the LA100 is already being used by another part of the program If this occurs use the Reset Comms entry on the Device menu to clear it If this fault can be repeated please report it to Lindos Electronics
9. lt Q gt Function Level Noise Crstk Dist WE M fans 2100 a Level LA100 5077 V6 7 Autorange Peak Hold Level 8 0046 f Input Impedance 10k 600 Norn Rel eel Monitor volume Phase degrees Default Save Delete This panel shows the oscillator settings in the top half of the window and the measurement options and measured values in the bottom half Many of the buttons and icons provide help if you move the mouse pointer over them and the help often gives details of keyboard shortcuts as well as explaining what they are for 1 23 Measurement Options The five Function buttons select the current function and most provide several options which can be selected from the drop down menu or by entering the option number into the box provided For example when using the LA102 Noise option 1 provides a CCIR Weighted quasi peak measurement whilst Noise option 8 provides an A weighted measurement The measurement function may be selected by clicking on one of the 5 function buttons These are Level Noise Crosstalk Distortion and W amp F for the LA102 When used with a MiniSonic a PPM Peak Programme Meter 22 button is provided instead of W amp F The options for each function are listed in chapter 2 of the LA100 manual and chapter 3 of the MiniSonic manual 1 24 Setting Frequency and Level The output frequency and level are set using th
10. may be zero When reading results files unknown packets must be skipped using the values of n and m to skip over the unwanted lines and binary data bytes respectively 1 64 The Graph Packet The Graph packet has the following packet header Graph format 5 m xunits yunits handle x1 49 x2 s The keyword Graph indicates that this is a graph packet and the format indicates which graph format is used 0 Linear X and Y axes 1 Logarithmic X linear Y axes 2 Linear X logarithmic Y axes 3 Logarithmic X and Y axes 4 Bar chart If the format is not 0 3 then the whole packet must be ignored Only formats 2 and 3 are used by current software m is the number of bytes of binary data that follow xunits and yunits are strings representing the units to use when labelling the graph For a logarithmic frequency sweep these would normally be Hz dB respectively and for a time plot they would be s dB handle is a number representing the graph handle and is used to link the relevant part of the results text with the graph This handle can be used to loop up the test title see section D 5 x1 and x2 represent the first and last values to plot on the x axis For a 20Hz to 20kHz sweep these values would be 20 2000 s is the number of samples in the packet This is typically 256 for a LA100 generated frequency sweep but other the values will occur for other results graphs The actual graph data follows using 2 bytes per sample i e m
11. on the far right of the toolbar and press return The MiniSonic will immediately run and receive the sequence returning the results when completed No progress confirmation is provided in Lin4dWinXP when used this way but it provides a very quick way of performing tests In many test situations you may never need to open the Control Panel at all Note that an option in Options MiniSonic is provided to control whether or not the Control Panel is opened on start up Open the Control Panel and click Seq The drop down menu below the function buttons will show SEQ1 Sweep u and the sequence text box will display u Use the drop down menu to select a pre defined sequence and click Run or press return Multiple sequences and repeating sequences can be run using the following commands n Repeat section between characters n times lt n Repeat all sections n times note that a stop button appears on the control panel For example u lt will produce sweeps indefinitely and the frequency response results will be updated on the computer immediately after every sweep n u 2h will produce nuuh as will n u u h h u 2 lt 2 will produce huuhuu Note It is not currently possible to include tone burst sequences using these commands This will be corrected in a future MiniSonic firmware update 15 1 14 Creating User Sequences Editing a pre defined sequence in the sequence text box creates a user defined sequence
12. the Lindos DSK2 DSK4 Lin4Win v2 1 or Lin4Win2000 software should already have suitable leads which for older units are 9 pin D plug to 5 pin domino DIN 3m long 5 pin domino DIN to 5 pin domino DIN 1m long The LA100 MKS interfaces using two standard D type to D type RS232 leads which are supplied with all new and upgraded units Plug the 9 way D plug into the PC serial port labelled SERIAL or COM1 and plug the other end into the LA101 or the LA102 If the computer has a 25 way serial port you will need an adapter plug or a different lead The other lead should then be used to connect the LA101 and the LA102 together The two serial interface sockets on each unit are connected in parallel so it doesn t matter which one is used but note that when using domino DIN leads the notch should be towards the left when looking in to the socket most LA100 units have a keyed socket but a few were shipped with non keyed sockets You can connect the LA100 to COM2 COM3 or COM4 if COMI is already used but a Communications Settings zioz you will need to change the Comms port eer serial port option by clicking G1 Co C3 C4 on Comms Setting from the Options menu which can be found at the top of the main results window OK When the LA101 and LA102 are daisy chained like this the LA102 provides the handshake signal back to the computer This means that the LA101 can be disconnected and the LA102 used by itself with the comput
13. to use a non proportional font such as Courier or FixedSys to ensure that the columns line up correctly 1 20 Saving Graphs Graphs can also be saved as metafiles Choose the Save Graph option on the File menu and save the file in the normal way This will save a Windows metafile with a WMF extension and this graphic file can then be loaded into another program such as Microsoft Word The graph is saved exactly as it appears so you should ensure that the correct graph options have been set before saving the graph see chapter 4 1 21 Saving Results as HTML Choose the Save as HTML option from the File menu and save the file in the normal way An HTML file and a GIF file with the same name will appear in the chosen directory The GIF which contains all the graphs is outputted with 256 colours and at a resolution of 72 dots per inch 21 Control Panel 1 22 Overview Click on the Panel button or choose Panel from the Device menu to open the measurement Control Panel 8 14100 Control Panel r Oscillator Output Frequency presets Level presets 200 400 arsk ek 1 4 so wf of Lindo 100 315 1k 6 3k 10k 50 30 10 10 18 Output Impedance gt Frequency Hz aein Level dB 10ohmXLR I Show true frequency 600ohm jack lt gt a gt JV Automagic lt gt lt gt Mute J ZC 600ohm load 3rd fine 0 01 m Measuring Set Level Zoom Range
14. will always be 2s with the first sample corresponding to x1 and the last corresponding to x2 If a linear x axis is in use format is 0 or 2 then the points represent samples at equal intervals If a logarithmic axis is in use format is 1 or 3 then the samples were made using a pseudo log scale A logarithmic scale will give reasonably accurate results but for best results the LA100 pseudo logarithmic scale should be used see LA100 manual for details Each sample is 2 bytes integer byte first followed by fractional byte using two s complement fixed point binary This is the same format that the S 50 command generates see page 146 of LA100 Manual for more details See the example results files provided for an example For example a typical graph packet header will look like this Graph 1 5 512 Hz dB 1 20 20000 256 This will be followed by 512 bytes of binary sweep data Other graph packets may follow and note that a stereo frequency sweep will produce two graph packets Lin4Win2000 results files require each line of the graph header to be prefixed with a null character followed by the character that has an ASCII value equal to the number of characters on the line Note that these are non printable characters and they will appear in a text editor as For example 5 512 ASCII 0 5 53 44 53 49 50 1 65 The Tolerance Packet Tolerances can be saved with results sheets by specifying a
15. Comments Excellent Freq Response This is a two head machine measured during record Note the slight phase error due to head misalignment both heads are m Page borders Test style and spacing Screen Fikedsys 12 point Screen font Printer Courier New 10 point Printer font m Vertical space between segment results point r Distortion units r Level units pioc i ri Dea dd CZ dBu C dBY Black and white Iy Cancel OK The Results Format window is used to set print options and other results options When OK is clicked the options are applied to the results sheet that is in focus and saved to disk as the default options for use when the program is next loaded The four boxes available labelled Equipment Make Model Type and Settings can be used freely to contain any text Users are urged to fill them in as indicated especially when publishing results to the Lindos Test Sheet Database because the database organises uploaded files automatically using these entries The first three entry boxes are combined onto the first line of the results header with the test conditions on the second line A typical entry might read Lindos LSC24 AD DA Converter on the first line followed by 44 1kHz 16bit Noise Shaped A further box in the Results header group is labelled Comments and this can hold a large paragraph of text which appears below the column of figures o
16. D dB buttons 23 Defaults 15 31 Direct trigger 29 Distortion measurement 24 Distortion units 36 E Edit Tolerance button 18 Error checking 38 F File formats Freq button Frequency display measurement presets 23 24 26 27 28 Frequency response graphs comparing overlaying Frequency sweeps FSK Function buttons G GET button GIF resolution Grade A Grade B Graph handles Graph options graph range Graph Viewer Graphs absolute distortion bar chart noise against time overlaying plotting separately Grid colour Grid density H HTML 14 29 10 31 46 25 48 23 23 33 16 27 47 22 21 I Output level 23 Input channel 26 P Input impedance 26 Packet data 49 K Panel settings 25 Phase 24 Key 6 32 PPM Peak Programme Meter 22 Key shortcuts 52 38 Keyboard shortcuts 24 Preset buttons 23 programming 23 swapping 23 L Printing 19 Labels 32 Large Graph Display 16 Q Level 23 26 27 34 38 presets 23 Quality 19 Limits 33 R M Read results 14 MDI T Reading results 12 13 Measurement options 22 Receive 14 Microsoft Word 20 Remote display 39 Monitor volume 14 26 Remove Tolerance button 19 Multi document 7 Repeating frequency sweeps 28 Mute button 23 big graph option 28 Reset button 25 Results N files 9 46 manipulation 10 Normalise 34 Results Format 35 dBSPL 34 Results sheet 35 to source level 34 to test level 34 S O Save options 19 Lin4Win2000 36 Options men
17. Lindos Lin4dWinXP Support Software for the LA100 MS1 and MS10 Audio Analysers User Manual First Edition Written by Chris Skirrow and Paul Skirrow Contents 1 Getting Started 1 1 Introduction 1 2 Installing the Software 1 3 Connecting the LA100 1 4 Connecting the MS1 MS10 1 5 Basics 2 Sequence Handling 2 1 File Handling 2 2 Results Display 2 3 Results Manipulation 2 4 Comparing Frequency Response Graphs 2 5 Reading Results from the LA102 2 6 Reading Results from the MiniSonic 2 7 Running LA100 Sequences 2 8 Running MiniSonic Sequences 2 9 Creating User Sequences 2 10 Large Graph Display 2 11 Tolerance Testing 2 12 Printing Results 2 13 Displaying Multiple Results 2 14 Exporting Results via the Clipboard 2 15 Saving Graphs 2 16 Saving Results as HTML 3 Control Panel 3 1 Overview 3 2 Measurement Options 3 3 Setting Frequency and Level 3 4 Frequency and Level Presets 3 5 Setting the Output Channel 3 6 Keyboard Shortcuts 3 7 Frequency Phase and Level Measurements 3 8 Distortion Measurement 3 9 Zoom Button 3 10 Reset and Close Buttons 3 11 Saving the Panel Settings 3 12 Bar Graph Speed 3 13 Changing the output waveform 3 14 Panel Features Specific to the LA100 4 Special LA100 Frequency Sweeps 4 1 Running a Frequency Sweep 4 2 Stopping a Repeating Sweep 4 3 Frequency Response Results 4 4 Notes and Precautions 5 Options 5 1 Options Menu 5 2 Comms Setting 5 3 Graph Opti
18. RCE HS18 U2 9 With short grill fitted 28 Jan 65 64 47 PH FREQU RESP 8dB 28 SEC s 26Hz 2 50 1 50 i hone s75 5 87 EHEH the results sheet some 20 87 0 75 S that you want the 315Hz 6 62 6 37 bii mH akoiy 0 0c 10 68 HH results to appear 16k6 0 12 3 25 on to the fore by clicking on its title bar Click Insert to insert the result o 12k5 0 88 2 62 2 14k 2 00 2 00 16k6 8 38 2 62 N 20k 0 38 0 50 6 1 s 0 2i ae EEE 25k0 8 12 1 12 HH FREQUENCY RESPONSE DIFF Tet Al 0 60 100 200 COHHENTS FREQU RESP 04B 20 SEC s left FREQU RESP 04B 20 SEC s right Note the 3dB peak centred on 12k Depending on caused by the resonance of the short grill This is fine for 10 the settings in the hair use but use the longer t t HHH HH grill for lapel use ci a os TL Coon Cite I either one or two Red plot is DPA4060 t Blue plot is Lindos MM3 47 new graphs will appear at the bottom of the results sheet See separate result without grill j i J ee ee Ps t WEEN Hh i 104 i TUT i 20 60 100 200 500 1k 2k Sk 10k 20k FREQUENCY RESPONSE DIFF left soe aa gc ae das ac gaa ek Gaaan aaa dae aa 11 1 10 Reading Results from the LA102 Use the Device menu to read results f
19. User Sequence will appear selected on the drop down menu To store the sequence for future use rename the sequence by typing over the User sequence text and clicking Seq The new user defined sequence will appear selected in the list To edit a user defined sequence select the sequence from the drop down menu and type the new list of segments into the sequence text box The list of segments displayed on the menu will automatically update To rename a user defined sequence type the new name over all of the text in the menu box and click Seq To delete a stored sequence remove all of the characters from either of the boxes and click Seq To save user defined sequences for future use name and Save the panel setup at the bottom of the Control Panel Note that this also saves the frequency and level presets see section 1 25 for further details 1 15 Large Graph Display Click on the Graph full size graph button after single clicking on a graph or double click on the graph itself to display a large full screen gan together with a frequency level amp Graph Viewer ia display which allows the precise level to be read for any frequency The frequency may be changed by typing a new frequency into the frequency box by using HH eee the up down buttons to i T E change it in third octave eee RESPONSE NI A040 natt or fine steps as on the LA101 or MiniSonic or moo e ee by
20. affect on OdB sweeps but a sweep at 10dB would be normalised so that it passed through 10dB on the graph at the specified frequency This can be useful when overlaying all of the frequency response plots on a single graph but note that this is only available on the LA100 and relies on the figure displayed on the results sheet after the segment letter which is only present when a segment level specification has been used e g TU 10 Normalise to test level causes each set of frequency response results to be normalised to the test level as measured by the unit if a test level result is available 1 42 3 Graph Options Other Tabs The options on the other tabs allow the appearance of additional MiniSonic graphs to be changed The X range Y range Height Width and grid density options behave exactly as described in the previous section The Normalise and Overlay All graphs options are not available The distortion bar chart tab includes the option Show Grades Un ticking this option will remove the grey Lindos grading zones from the distortion bar chart 34 1 43 Results Format The Results Format window can be opened by double clicking on the text in a results window or by using the Options Results options menu w Results Format loj xj Results header Equipment Make DENON DENON DR M24HX Cassette Deck Equipment Model DR M24HX Equipment Type Cassette Deck xl Tie RECREPLAY Doby B TDKSAX
21. annels in one of the following formats n Value must be less than or equal to n tn Value must be 0 n nm Value must lie between n and m space or sign separate n amp m n m Value must be ntm Any of these forms can be followed by a difference specifier lt d Channels or registers must match within difference d Note that the first form would normally be used for distortion noise or crosstalk results which must normally be below a certain limit but there is usually no lower limit they cannot be too good The second form n would normally be used for frequency response speed error or phase results which should ideally be 0 although the third and fourth forms are often used for frequency response results where different upper and lower limits can be useful eg 2 3 n m and d may be positive or negative although the sign is optional Most tolerance limits tend to be whole numbers although decimal places are allowed In fact each value may be specified to a resolution of 0 0001 in the range 9999 9999 to 9999 99 the fractional part can be omitted for whole 17 numbers The units that are used depends on the test segment For example frequency response results will be in dB while phase results will be in degrees Choose Apply tolerance from the Tolerance menu item to apply a tolerance to the displayed results Choose Edit Transfer tolerance or click the edit tolerance button on the toolbar to start the toleranc
22. ber of memories is also reduced if the number of compartments per memory LA102 configuration C has been increased See the LA102 manual and V6 3 V6 5 update sheet for details Attempting to read from a results memory that isn t available will give a warning message 1 11 Reading Results from the MiniSonic Click the Get button on the Control Panel to read results from a MiniSonic The read process will take no more than one second and will read the test results from the last sequence test whether it was run directly on the MiniSonic or under computer control The MiniSonic V3 0 can at present store one set of results in its memory and the results are preserved if the unit is turned off 1 12 Running LA100 Sequences The simplest way to run a sequence is to enter a list of segments e g TRINCZ into the text box provided on the far right of the toolbar or to the right of the status box on the Control Panel and press return The Run Sequence window will then open and messages confirming the progress of the sequence will be displayed Once the sequence has completed the results will be retrieved and displayed automatically aeix Sequence bank Lindos defaults b Sequence ji General tape tesi v m Channels Monitor volume C Let C Righ Both I Setto 22 22kHz filter JV Read results I Open save box Test level dBu fo M Sendonly f Receive only Comment eats The Run Sequence window can be opened by
23. clicking over the PPS graph with the mouse and fine Normalised to 1kHz All of the frequency response graphs in the results can be overlaid and plotted on the large graph by selecting Overlay All from the Graph Options window see section 1 42 If any are not visible then they probably fall outside of the graph range and may be displayed by changing the graph scale in the Graph Options window The MiniSonic can produce graphs of noise against time segment I and of level against level segment h The up down buttons in the Graph Viewer 16 provide one second and one dB steps respectively for these graphs and the fine buttons step up and down point by point The MiniSonic can also plot phase against frequency segment z A large number of graph options are available to change the size grid density scale colour and overlaying of graphs These options are accessed by clicking on the Graph Options button or via the Options menu see chapter 4 for details 1 16 Tolerance Testing The tolerance testing system is based on the Lindos format described in chapter 5 of the LA100 manual and section 8 8 of the MiniSonic manual but it has been extended to allow distortion limits optionally in rather than dB The Tolerance Definition For every result value recorded by a test segment there can be a corresponding tolerance string Each tolerance string can specify an upper value or a range and a maximum allowed difference between the two ch
24. d recalled and the settings last used will be restored when the program is next loaded To save the current state of the panel enter a name for the settings into the dropdown menu in the bottom left corner of the window and click the Save button The frequency and level presets are saved as well as the sequence definitions and input and output impedance settings The current frequency level and channel settings are not saved The Delete button allows the current panel setting selected in the drop down menu to be deleted 1 33 Bar Graph Speed The bar graph shows the current level just like the bar graph on the LA102 or MiniSonic However when using an LA102 the bar graph on the computer display will not be as responsive as the bar graph on the LA102 itself due to communication delays over the serial link When using a MiniSonic the computer display will be much more responsive thanks to the MiniSonic s synchronised continuous data streaming system named SyncLink which updates the level information 110 times a second This is fast enough to avoid obvious beating with the screen refresh rate typically 60 75Hz When using either unit the Freq button toggles frequency and phase measurement If turned on the frequency and phase are measured and displayed but this will make the bar graph less responsive Turn Freq off to make the bar graph more responsive 25 1 34 Changing the output waveform The waveform type can be selected using
25. e FREQUENCY RESPONSE U 04B left FREQUENCY RESPONSE U 04B right FREQUENCY RESPONSE U 84B left Select Overlay All from the FREQUENCY RESPONSE U 8dB right frequency response tab on the Graph Options window to overlay multiple graphs To delete a segment single click the segment text and press delete A message box will appear asking you to confirm the deletion 10 1 9 Comparing Frequency Response Graphs When testing microphones or equipment in a system with a known response error it can be useful to add graphs or subtract one graph from another Click on the graph comparison icon on the toolbar to open the Graph Comparison window x Drag and drop the segment headers of the graphs onto the boxes labelled segment A and segment B Note that the same segment can be dropped r Segment Drag and drop graphical segment header here r Segment B Drag and drop graphical segment header here onto both boxes and that this A creme i eft C Left facilitates the comparison of one C Right C Right channel with another from the same Both i graph see DPA4060 microphone C Swap Swap results below Left selects the left channel for comparison Right selects the right channel Both selects both channels Swap will swap the channels over Select the form of comparison required A B or A B then bring LINDOS AUDIO SEQUENCE TEST DPA DPASG6B Microphone SOU
26. e editor The Apply button provides a way of testing tolerances as you edit them When clicked the tolerance will be applied to the results sheet that was last selected Try loading a tolerance file supplied with the software in C Program Files Lin4dWinXP Tolerances It is advisable to make a copy of the tolerances directory elsewhere for your own use before making any changes w Tolerance editor 5 x The File menu allows SELF TEST 93 tolerances to be U O 15 4 1 4 O5 555555554 108 saved or opened in i ie7 105 the tolerance editor tse so Tolerances can also 28 86 76 be applied by dragging and dropping them onto a results sheet which will also open the tolerance editor for ease of editing It is also permissible to J edit tolerances in a text editor as they are just text files Apply Tot 1 Tolerances can be sent to or read from the LA102 by clicking Send or Read in the tolerance editor Progress and confirmation messages for the read and send operations are displayed in the bottom left corner of the window The quick tolerance icons on the toolbar offer two user tolerances and two Lindos grading tolerances for instant application The action of the user tolerance buttons can be set up using the Tolerance Options window click Options Tolerance options see section 1 45 for further details 18 The Grade A and Grade B Tolerance buttons on the toolbar apply the Lindos defined quality g
27. e frequency sweep mode uses standard frequency sweep segments and the type may be chosen from the drop down menu Note that the initial letter refers to the LA100 segment letter see LA100 Manual pages 39 and 70 and the different segments cover different frequency ranges and durations 27 The level in dBu and the output channels can also be set before running the sequence and correspond to the LA100 test level and sequence channel see LA100 manual sections 3 7 page 45 and section 3 11 page 48 respectively Note that two channel sweeps will take twice as long as single channel ones so it helps to set single channel operation wherever possible The sweep is always generated on both channels the channel setting determines which channels should be measured The Repeating button determines whether the sweep will repeat continuously or just run once To run the sweep click on the Run sweep button The computer will initialise the LA100 and run the sweep preceded by a test level segment to determine the headroom required The results will be displayed when the sweep finishes and another sweep will start at the same time if repeating sweeps are being generated If the Big graph option was selected the frequency sweep will be plotted on a full screen graph otherwise it will appear in a normal results window with the usual sequence heading and frequency response table If the sweep fails or an error message appears refer to the troublesho
28. e text as on an LA102 printout This window can be scrolled up and down using the standard Windows scroll bar scroll buttons or wheel mouse It can also be scrolled with the Page Up and Page Down and cursor up down keys Graph options can be used to change the size scale colour normalisation or style of the graph as described in section 1 42 To change the graph options click on the Graph Options button or choose Graph Options from the Options menu The new options will be applied to all graphs in the current results window as well as to new results windows that are opened but other results windows will not be affected 1 8 Results Manipulation Each segment displayed on a results sheet can be copied to another results sheet by dragging and dropping the segment text The drag can be initiated anywhere on the segment s text and a dashed bounding box will appear around the text Drop the box onto another segment s text and the segment will be inserted below the segment it was dropped on unless the segment being copied is already on the results sheet This is useful for overlaying multiple frequency response graphs that were generated with different sequence runs adding power to 20 60 400 200 500 Ak 2k 5k m 20k soe FREQUENCY RESPONSE U 8dB left MiniSonic in particular as it can wa PREHUENGY RESPONEE Dus bieHiHI only normally plot one respons
29. e up down buttons The 3rd buttons change the frequency in third octave steps 1000Hz 1250Hz 1600Hz 2000Hz etc while the fine buttons change the frequency in fine steps 32 steps per octave on the LA102 or 12 steps per octave on the MiniSonic Similarly the dB buttons change the level in 1dB steps while the fine buttons change the level in 0 01dB steps on the LA102 or 0 5dB steps on the MiniSonic Typing new values into the fields and pressing return also changes the frequency and level Note that the Lindos oscillators can only generate certain specific frequencies and the closest frequency available will be used If True frequency is selected the actual frequency being generated will be displayed otherwise the frequency will be rounded to the nearest third octave when it is changed with the third octave buttons 1 25 Frequency and Level Presets The ten frequency and ten level presets can be used to set a particular level or frequency with a single mouse click The preset buttons can be assigned other frequencies or levels by manually setting the frequency or level and then holding the Ctrl key while clicking on the preset button or by clicking and holding the preset button for two seconds The button will turn yellow to confirm the change To swap two presets drag and drop one onto the other 1 26 Setting the Output Channel The Left Right and Mute buttons are used to select the output channels and the yellow highlight indicates the
30. er The results value may also have a units suffix such as d for degrees or for percent 1 62 Graph Handles Frequency sweep segments will normally generate graphs as well as text The graph data follows in a graph packet see below and a graph handle is used to indicate which graphs are associated with each test 48 In such cases the title line has one or more characters at the end of the line each followed by the graph handle For example if frequency sweep R generated two graphs with graph handles 1 and 2 then the title line would be FREQUENCY RESPONSE R 10qB 1 2 It is best to remove this suffix when displaying the results to aid clarity but always store them in results files 1 63 Packet Data The packet data is optional and will normally only occur in results files that contain graphs or tolerances An end of text ASCII 26 character is used to mark the end of the ASCII text section and the start of the packet data This is followed by one or more data packets each starting with the following two lines which form a packet header type format n m type is a case insensitive string specifying the packet type while format is a number representing the format n indicates the number of lines of text in the packet header not including these two lines while m is the number of bytes of binary data that follow Each line of text in the header is terminated with a CR ASCII 13 character and n and m
31. er However if the LA101 is to be used on its own a dummy handshake plug must be plugged into the unused socket on the LA101 to return the computer s own handshake a domino DIN plug with pins 2 and 5 connected together is available from Lindos on request No special settings are needed in the LA100 Lin4WinXP will automatically detect which baud rate the LA100 is set to and reconfigure it for 9600 baud When the LA100 is connected to the computer its own keyboard can still 5 control it The computer will take over and disable the LA100 keyboard when it needs to but it will return the LA100 to manual mode as soon as it has finished If the LA100 is ever left in REMOTE mode tap the ON OFF key briefly to put it into manual mode but this shouldn t be necessary 1 4 Connecting the MS1 MS10 All MiniSonic devices are supplied with Lin4dWinXP and a D type to D type RS232 lead Connect the female D type to the PC s serial port and the male D type to the MiniSonic s RS232 port Take care to not plug into the audio input or outputs as this will cause the UniSon PowerBus to become shorted resulting in a loss of power from the unit The MiniSonic s power circuits are internally protected so no damaged will be caused should this accidentally occur The MiniSonic can be connected to COM2 COM3 or COM4 if COM1 is already used but you will need to change the serial port option from Options Comms Setting on the menus listed at the top of t
32. ermine the graph width and height in cm This setting affects graphs on the screen and on the printer but the actual screen size will also depend on your monitor size and screen resolution it is a good indication of the size though Separate graphs causes each graph to be plotted on a separate graph Overlay L R pairs causes L R pairs of frequency response plots to be plotted on the same graph but a different graph is used for different frequency 33 response segments Overlay All will plot all of the frequency response plots on a single graph If any frequency response plots seem to be missing check that the Y range is large enough to include them or for frequency response graphs enable normalising Note this button is only visible when viewing LA100 results sheets Normalise determines whether absolute frequency response graphs are plotted or whether they are normalised to make them pass through OdB at a particular frequency 315Hz 400Hz or more commonly 1kHz These options also recalculate the figures displayed in the frequency response listing The dBSPL 100dB option is for use with microphones calibrated to give OdBu in for 100dBSPL and is useful for displaying loudspeaker measurements in dBSPL sound pressure level rather than as the microphones output level in dBu Normalise to source level causes each set of frequency response results to be normalised to the level at which it was generated rather than OdB This has no
33. es in a band pass filter to reject low and high frequency noise outside of the audio bandwidth It will affect the LA102 frequency response slightly near these frequencies but the effect is minimal Read results is normally enabled to make the computer read the results as soon as the sequence has finished The results are displayed in a new results window Open save box causes a dialogue box to be opened allowing the results to be saved to disc as soon as they have been read This is convenient when performing a large number of tests as it saves time in opening the save menu for each test Test level determines the level at which the sequence will be run All of the test segments will be relative to test level and the FSK will also be at test level See section 3 7 on page 45 of the LA100 Manual The Send only and Receive only buttons should be used if a sequence is being generated but not received or vice versa for example when testing a 14 communications link or when making a test tape The Comment field can be used to enter a comment which is then stored with the test results and displayed in the results header Note that comments can be entered edited after the results have been read Double click on the results text to bring up the Results Format window The Defaults button restores all of the other settings to their defaults 1 13 Running MiniSonic Sequences Enter a list of segments e g nurqlz into the text box provided
34. h are drawn 31 1 42 1 Graph Options General Tab aix Distortion Bar Chart Phase Plot Headroom Plot General Frequency Response Noise Plot cles m Tol Mask Lett J row con Let2 J Rione Ij Arrows Lets P ris C Le Let4 _ Rights C Mask I Lets E rights E pLabeis Grid colour O Arial Background JV Show key Font M Grid Format Line thickness j8 Iy Cancel OK Left1 Right1 etc These colour boxes are used to specify the colour of each plot Left1 is used to plot the left channel for the first graphical segment Left2 is used to plot the left channel for the second graphical segment etc Click on one of the boxes to change its colour using the standard Windows colour picker The Grid colour can also be changed in the same way The Line thickness setting alters the thickness of the grid This can be useful with some laser printers for which the default line thickness is too narrow The Labels option controls the font and font size used for labelling See appendix C for details of the Windows font picker Show key causes a key to be drawn below the graph indicating which colour represents which graph It can be turned off to save space Mask determines whether the tolerance limits will be plotted over the graphs 32 when a frequency response tolerance is in use Arrows causes small arrows to be plotted showing each tolerance limit Lines causes the
35. he main results window 1 5 Basics Double click on the Lin4WinXP icon to start the program and after a few seconds the main window and the Control Panel will open If the computer has a firewall installed it will probably prompt whether to allow Lin4WinXP to access the Internet Lin4dWinXP needs Internet access to publish test results to the Lindos web site and to download updates but it will function without Internet access if you wish to keep blocking it Refer to your firewall documentation for further details If no device is present the status bar at the bottom left of the control panel will turn red and flash the message No unit Connected no handshake on COM1 Return to the previous section if this occurs or see appendix A if you suspect baud rate problems Once a connection is established the panel message will change to show the device connected along with its serial number and firmware version For example LA100 5077 V6 7 or MiniSonic 0001 M3 0 The software requires a licence keyfile to function fully with an LA100 unit MiniSonics units work in full with all versions straight away If the LA100 is not licensed a message will appear offering to connect to the internet and download the latest Userkey file or continue in demonstration mode The Userkey file contains a list of all the currently licensed LA100s If the PC being used doesn t have an Internet connection the Userkey dat file can be download man
36. ications and its contents may be viewed using the Windows Clipboard Viewer application Items put on to the clipboard will remain there until overwritten by another item or until Windows is shut down To copy a set of results to the clipboard click on the Copy to clipboard button This will copy the current results text as plain ASCII text and the graphs as a single Windows metafile NB text works but graphs currently have a problem These can now be pasted into another application by using its Paste from clipboard button If multiple sets of results are loaded ensure that the correct results are selected before using the Copy to clipboard button Some applications will only be able to handle one type of data For example Microsoft Write cannot handle pictures so it will only paste the results text Most word processors can handle text and graphics metafiles although separate paste commands are needed to paste each item For example in Microsoft Word the Paste button will paste the results text but the Paste Special command on the Edit menu can be used to paste the metafile graphs into a Word document The graph can now be resized or cropped in 20 Word by dragging or shift dragging the corners of the bounding box Since the graph is exported as a Windows metafile it can be scaled and printed without losing any quality and without requiring excessive amounts of memory When results text is pasted into a word processor it should be set
37. lk or Distortion with either unit only a single channel is measured and the L and R buttons may be used to select which channel is measured 1 29 Distortion Measurement When measuring distortion the level is displayed in dB relative to the measured level of the fundamental It is also displayed as a percentage Both the MiniSonic and the LA102 measure the level of the fundamental briefly when the Dist button is clicked for use in deriving a relative reading so it is important that the Dist button is clicked again to re measure the fundamental if its level changes It is a good idea to click on the Dist button if in any doubt 1 30 Zoom Button The Zoom button expands the bar graph scale and the Range buttons change the bar graph range as well as locking the current range The 24 Autorange button toggles autoranging Autoranging is automatically disabled if one of the Range buttons is used 1 31 Reset and Close Buttons The Reset button resets the unit and restores the default output frequency and level The Close button closes the control panel If using an LA100 it also puts the LA100 back into manual mode thus allowing the LA100 s own front panel buttons to be used 1 32 Saving the Panel Settings The current settings in the Control Panel can be saved as a named panel setting This can be particularly useful when production testing where set levels or frequencies are repeatedly needed Several settings can be saved an
38. loured lines they will be plotted using thin lines using a different line style 1 44 Save Options The Save in Lin4Win2000 format tick box allows LA100 results sheets to be saved for use with Lin4Win2000 an earlier version Save Tolerances saves the tolerance string applied to a results sheet along with the results sheet data When the results sheet is next loaded the tolerance is automatically applied 1 45 Tolerance Options 36 Tolerance Options az loj x Tol Options Always apply current tol file defaults to user tol 1 K Set user tolerance 1 C Octopus Octolin Source tolerances ms10 tol aK Set user tolerance 2 C Octopus Octolin Source tolerances S elfT est tol Cancel Selecting Always apply current tolerance file will cause the tolerance file last applied to a results sheet to be applied to every results sheet loaded from disk unless the saved file has a tolerance saved with it or read from a unit Note that when the software first loads user tolerance 1 will be applied if this option is ticked The Set user tolerance buttons allow the action of the quick tolerance icons on the toolbar in the main results window to be set up Click to open a file dialog box which allows selection of the tolerance file that is to be applied by the corresponding toolbar button 37 Other Features 1 46 Command Window A Command Window can be opened by choosing Command Window from the Device menu I
39. n the left hand side of the results sheet It is suggested that this be used to 35 make comments on any faults good features or peculiarities that others might be interested in Page Borders may be specified in cm to ensure that the printout has a large enough border for punching or binding Font size for the results text may be set independently for the screen and printer It is often useful for reducing the font size to ensure that the results will fit on the paper or the screen Font name may be set independently for the screen and printer but only fixed pitch fonts are available such as Courier Terminal or FixedSys otherwise the results columns would not line up Note that these options do not affect the graph labelling as the label font size is set in the Graph Options see section 1 42 1 Space between segment results can be used to add a small gap between each segment A value of 4 points is recommended note that 1 point is 1 72 inches and this is the default Distortion units may be set to dB or as required 40dB is 1 60dB is 0 1 and 80dB is 0 01 This will apply to all distortion results and also tolerance specifications The tolerance must be defined in dB but it will be converted to for the results display note that printouts made directly from the LA102 always show distortion tolerances in dB Black and White can be used to produce black and white printouts Instead of plotting graph traces using co
40. nt letters into the Quick Sequence box on the toolbar through the menus or via the control panel Note that all MiniSonic segments are lower case letters and the majority of LA100 uppercase If connection to the device proceeded smoothly as described above try entering U or u and pressing return Assuming that a signal path is available between the output and input the device will immediately run and receive a stereo sweep It is also worth noting that the MiniSonic can communicate with an LA100 i e entering U with a MiniSonic 7 connected will produce an LA100 sweep and will generate and receive some LA100 segments see section 4 6 of the MiniSonic manual for further details Sequence Handling 1 6 File Handling Use the File menu to load or save results Results files have a RES file extension and are typically just 2K bytes in size Sample Results and Tolerance files are provided with the software in directories named Results and Tolerances which can be found in the directory that the software was installed to normally C Program Files Lin4WinXP Results files can be loaded by clicking on Open in the File menu or by dragging and dropping them into the main window Please see appendix C if you are new to Windows The results will be displayed in a new window Use the Open menu eniry to load the demo res results file E Lin4 WinXP Sequence Results from C Program Files Lin4 WinXP demo res i File
41. ntrol is removed from the panel 30 1 42 Graph Options The Graph Options window can be opened by clicking on the Graph Options button on the toolbar or through the Options Graph Options menu ixi Distortion Bar Chart Phase Plot Headroom Plot General Frequency Response Noise Plot mx range Auto Min Mic C Manual Max Width om Height cm e Y range C Separate Graphs R C Range ange 20 Overlay L R pairs Limits Min 10 Max 10 C Overlay All Normalise m Grid Format X Grid Density Y Grid Density Absolute I Totestlevel C Off C of C 70Hz IV To source level C 315Hz dBSPL 100dB Coarse Coarse C A00Hz Standard Standard Fine C Fine Q ilie 3 15kHz Defaults Ty Cancel The tab buttons provide access to the options for different graph types The General tab and the Frequency Response tab are always available but the other options are only available when handling MiniSonic test results they are not available with LA100 test results The Defaults button restores the default graph options The Try button redraws the relevant graph with the options as they are selected It doesn t save the new settings though so the Cancel button can be used to cancel the changes and revert to the previous settings OK accepts the changes and uses them for the current results sheet and also for subsequent results sheets whic
42. on from the front panels so existing users should find it easy to use The Windows software provides many more options with a simpler user interface Graphs can be printed as large as the printer will allow and a rich set of options allows the colours styles and overlays to be controlled Tolerance masks can be shown on the graphs and the grid density and labelling can be easily adjusted This manual refers to Lin4dWinXP v5 30 Please refer to accompanying update sheets or to the ReadMe file on disc if you have a later version If you are upgrading from an earlier version refer to appendix B for a list of new features If you are new to Windows refer to appendix C for an explanation of the common dialog boxes Please send any comments suggestions or bug reports to Lindos Electronics 1 2 Installing the Software Put the supplied CD into a Compact Disc Drive and double click on the drive icon in My Computer or an equivalent short cut Double click on the Setup file to install Lin4WinXP on your hard disc If you encounter any problems installing the software restart the computer ensure that no other applications are running and try again The software will work with Windows 95 98 NT3 NT4 2000 ME or XP To run Lin4WinXP click on the Windows Start button follow the programs menu arrow and click on the Lin4WinxXP icon 1 3 Connecting the LA100 The full software pack normally comes without connecting leads Users upgrading from
43. ons 5 3 1 Graph Options General Tab 5 3 2 Graph Options Frequency Response Tab 5 3 3 Graph Options Other Tabs 5 4 Results Format 5 5 Save Options 5 6 Tolerance Options 6 Other Features 6 1 Command Window 6 2 Tone Bursts 6 3 Remote Display LA100 only 7 Uploading to the Test Sheet Database 7 1 Introduction 7 2 Creating an Account 7 3 Uploading Test Results 8 Appendix A Support amp Troubleshooting 8 1 Technical Support and Other Help 8 2 Diagnosing Problems 9 Appendix B New Features 9 1 New in V2 0 9 2 New in V5 10 9 3 New in V5 24 9 4 New in V5 30 10 Appendix C File Formats 10 1 Sequence and Tolerance Files 10 2 Results Files 10 3 Results Header Lines 10 4 Results Text 10 5 Graph Handles 10 6 Packet Data 10 7 The Graph Packet 10 8 The Tolerance Packet 11 Appendix D Key Shortcuts Index Getting Started 1 1 Introduction The Lin4WinXP software enables a PC with Windows to control the Lindos LA100 MS10 or MS1 Audio Analysers via a serial link It provides a simple way of accessing the standard features using a graphical user interface rather than operating the units from their front panels Automatic test sequences and frequency sweeps can be run under computer control and the results displayed printed uploaded to the Lindos Test Sheet Database for public viewing or saved to disc Tolerance testing allows all results to be checked against pass fail tolerances This all works in a similar way to operati
44. oting section in appendix A 1 37 Stopping a Repeating Sweep To stop repeating sweeps click on the Stop button The sweep will not stop immediately but when the next sweep or pair of sweeps has finished because the computer cannot interrupt the LA100 when it is running a sweep 1 38 Frequency Response Results If the Big Graph option was selected the results will now be available in a standard results window as well as a large graph If the Big graph option was turned off the results can be viewed full screen by double clicking over the results graph in the usual way Frequency response results behave just like any other sequence results and may be saved printed or tolerance checked in the usual way see chapter 0 Lin4WinXP can still be used while repeating sweeps are running although the system will freeze occasionally when the results are read from the LA102 28 The frequency in the Large Graph window may be changed by entering a new value or by using the up down buttons or by clicking over the point of interest 1 39 Notes and Precautions As with normal sequences the left channel must be connected even if the right channel is being measured as the left channel carries the FSK which the LA102 uses for synchronisation When testing sharp filters or other systems which block the FSK connect the L channel directly between the LA101 and the LA102 and connect the right channel through the device under test see LA100 man
45. rading system Lindos Grade A suggests a level of quality that produces no perceptible degradation whatsoever for most listeners in blind A B testing under the very best listening conditions It is close to what would be expected from optimal CD quality Lindos Grade B represents a level of quality that most people most of the time would find near perfect The best compact cassette decks will meet this grade using Dolby C or possibly Dolby B Tolerances can be removed by clicking the Remove Tolerance button on the toolbar The Options Save options menu provides an option to save the tolerance information with the results file and by default this is turned on When the results sheet is next loaded the tolerance will be automatically applied Use the edit tolerance button to extract a tolerance from a saved file or to edit an applied tolerance When a tolerance is applied to segments with graphical results the limits are marked on the graph with blue arrows These can be changed to lines or removed using the graph options settings see section 1 42 1 1 17 Printing Results Use the Print option on the File menu to print the test results Printing uses a Windows printer driver that must have been set up as explained in the Windows manual Any Windows compatible printer can be used including Postscript and colour printers Colour graphs will be printed on colour printers but monochrome graphs can be printed ins
46. re terminated with CR carriage return LF line feed or CRLF pairs In DOS and Windows the CRLF pair is used but it is important that all software can handle text with any line terminator as other operating systems use different terminator BBC and Macintosh computers use CR while Unix and RISC OS systems use LF See the supplied master disc for some sample files 1 58 Sequence and Tolerance Files Sequence and tolerances files have the extension SEQ or TOL respectively and they hold a single sequence or tolerance definition per file The definitions may extend over several lines and my include spaces The line terminators and most spaces are removed when the sequence or tolerance is sent to the LA100 1 59 Results Files Results files have a res extension and are used to store results from sequence tests frequency sweeps data logs and automatic test procedures The first part of the results file holds the complete results text as seen on the printout or in the results window This is plain ASCII text using CRLF line terminators but see the note above about handling CR and LF line terminators The second part is optional and is used to hold graph data and other information in separate packets a mono sweep is held in a single packet The packet header is in ASCII text but the actual data is held in a compact binary form to keep the files small Tolerance information which is also optional will appear after the graph packet
47. rily intended for testing meters PPM CCIR etc on other equipment Various short bursts of specified durations are used to ensure that the meter reaches its correct target level Note that tone burst generation segments are also provided for this purpose 38 1 48 Remote Display LA100 only The remote display option on the Device menu shows a live copy of the LA102 LCD on the computer screen This will be updated in real time and the LA102 may be used as normal using the front panel buttons although it may operate a little slower than usual The remote display can be re started by double clicking over the Remote Display window or by using the Remote Display menu option again When the window is closed the LA102 will return to normal operation is LA102 Remote Display Be 15 x LEWEL lOks L KAS 2 100kKHz g IDO1Hz 0 01dEu 5 o 5 This can be useful for write ups demonstrations and teaching purposes 39 Uploading to the Test Sheet Database 1 49 Introduction Lindos Electronics maintains an on line database of test results for a wide range of equipment which can be viewed at http www lindos co uk or by clicking on the world icon on the toolbar and then clicking the Open Database button FlexiData cgi SOURCE Results Microsoft Internet Explorer File Edit View Favorites Tools Help Address fa http www lindos co uk cgi bin FlexiData cgi SOURCE Results ai gt Go Q x 7 x
48. rom the LA102 This will read the results from the last sequence test whether it was run directly on the LA100 or under computer control The LA102 has 6 Read Sequence Results oe x results memories r Read from memory number numbered 0 to 5 and memory 0 is always C EES INE EE S S used to hold new results The LA102 can be used to store up to 6 sets of results by Comment pressing 2 and then a memory number to store the current results from memory 0 in one of the other Cancel memories Test results volatile memory so they are preserved if the LA102 is turned off Auto advance memory number are stored in non A comment to be held with the results can be entered into the space provided and the date and time will automatically be added to the results header Comments can also be added edited after the results have been received loaded by double clicking on the text see section 1 43 for further details Click on the Read button to read the results this should take about 4s but will take longer on slow computers or for large results files containing many frequency response sweeps If this fails refer to the troubleshooting section in appendix A Technical note Since the LA102 memory is shared and used for different purposes the number of results memories is sometimes reduced In particular results memories 4 and 5 cannot be used when user defined tolerances are held in the LA102 and the num
49. s Again this is plain ASCII text using CRLF line terminators but see the note above about handling CR and LF line terminators 1 60 Results Header Lines The first few lines of the results text up to the first blank line contain file header information Subsequent lines represent the body of the results The first line of a results file is the title which indicates where the results came from For example LINDOS AUDIO SEQUENCE TEST The rest of this line can contain a 42 character heading starting at character position 32 i e spaces are used to pad up to this position It will be filled in by the LA102 if the user has defined a heading in the LA102 The second line carries details of the sending and receiving systems The word SOURCE is followed by the source ID see section 4 3 page 67 LA100 Manual as received from the LA101 in the FSK segment This is followed at character position 32 by the text LA102 and the measuring set ID the serial number and internal software version number SOURCE 00012 LA102 0518 v6 5 The third line contains the word SEGMENTS one or more spaces and a list of segments received on each channel the lists are separated by one or more spaces SEGMENTS TX TX Subsequent header lines may be used for comments and a blank line is used to indicate the end of the header text It is recommended that the comments be restricted to 4 lines but there i
50. s AL is 100dB SPL ie TL 89 65dB 1kHz Click here to download Lin4Win file 1m CELESTION SL 600 new Speaker EXCELLENT SMALL SPEAKER Click link to view as html Pete Skirrow On back on quilt front 300mm off ground Lindos EQ1 in eke Half Space power amp LF boost 10dB gain set on mic ie AL is Click here to download Lin4Win file Response with 90dB SPL so TL is 78 25 dB SPL 1kHz cone just Lindey EQ1 limits at 20Hz CREATIVE Nomad 3 sew MP3 Player Excellent Quality Almost GradeA but for level Note Clidclinkto view as htm Pete Skirrow phase shift indicating a single time shared DAC Rather Click here to download Lin4win file 128 kb s test file AL fiddly to use and upload to prefer SD flash card player 18dBFS for easy organisation of music files by drag and drop without special software Cvnallant masta ahut anail hutha Laes E T i intenet The site is for all audio equipment professional or consumer including video equipment MP3 players camcorders etc Users are invited to contribute their own test results for equipment and the Lin4WinXP software provides an upload facility to send test results to the Lindos Test Sheet database 1 50 Creating an Account Before uploading test results it is necessary to create an account on the database Click New Account on the database web page and set up an account by following the instructions and filling in the form Make a note of your username and password for
51. s no limit A blank line should always follow the header lines and must be totally empty A line containing a single space is not regarded as being blank this allows multiple comments to be separated by a line containing a single space Tab characters are not used 1 61 Results Text 47 The actual results follow with a section for each test usually each test segment Each section has a title line giving the title of the test and the test name in square brackets For Lindos test segments the test name is simply the segment letter Title lines can be detected by looking for the square brackets Subsequent lines up to the next title line contain results for that test segment For example TEST LEVEL OUT T OdB 0 11 2 65dBu DISTORTION 2f 22k D 8dB 100Hz 12 28 73 0 1kHz 94 3 91 4 6 3kHz 1228 STTS PHASE mean Z 40Hz 0d 100Hz ld 1kHz 4d 6 3kHz 7q 10kHz 37d 15kHz 28d The precise format of the results lines is 8 character measurement title 7 characters containing the L channel results 2 spaces 7 characters containing R channel results Any other text The values are right justified in the 7 character field width but the decimal points may not be aligned as some values may use more decimal places than others test level and frequency response results have 2 decimal places distortion crosstalk and noise have 1 phase results have no decimal places W amp F results have a variable numb
52. ssword is ticked the login details will be saved for use next time the program is loaded Batch publish allows all of the results sheets that are currently loaded into Lin4WinXP to be published at once Open published results sheet opens the results sheet after it has been uploaded as confirmation in the default web browser set for the computer The Open Database bution launches the computer s default browser and opens the Test Sheet Database from the Lindos website 42 Appendix A Support amp Troubleshooting 1 52 Technical Support and Other Help For technical support please contact Lindos Electronics by phone email or fax contact details are given on the back cover Note that many of the dialogue boxes provide help if you move the mouse pointer over a button or an icon and the help often gives details of keyboard shortcuts as well as explaining what the item is for Please refer to the Lindos LA100 or MiniSonic manual for full details of the measurement functions sequences and other features 1 53 Diagnosing Problems If LA100 communication fails check the error message LA100 is busy or not connected This means that the serial port CTS handshake line is busy Ensure that the LA102 is turned on and connected to the correct serial port note that an LA101 cannot be connected by itself without a dummy handshake plug Choose Comms setting from the Options menu and ensure that the correct serial port is configured Unit
53. t allows commands to be entered and displays the responses of the unit The Error checking facility automatically checks for LA102 errors after every command and displays an error message as appropriate This facility can be used to control the LA100 or MiniSonic remotely giving full access to all of their facilities although its use is rather limited as it is usually easier and simpler to use the sequence or panel modes It can also be useful to try out commands when writing software to control a Lindos device 1 47 Tone Bursts Select Tone Burst from the Device menu or click on the TB fiw Tone Burst x button to open the tone burst He window Frequency Enter the Frequency Duration and Level ieh i the Tone Daou a Burst button to generate the tone burst These tone bursts are very pS accurate as the device handles the timing rather than the computer and the duration may be specified to a resolution of 0 ims in the range 0 1 to 6553 5ms when controlling an LA100 or to a resolution of 1ms in the range 1 255ms on a MiniSonic Level Tone bursts always use sine waves beginning at a zero crossing They can be made to finish on a zero crossing by setting a duration which corresponds to a whole number of cycles at the specified frequency but remember that the device may not be able to generate the precise frequency that is entered see page 184 of the LA100 manual for a full list of LA101 frequencies Tone bursts are prima
54. tead by changing the Printer driver colour setting or by changing the graph options Many other options are available to control the margins headings and text size of the printed results See sections 1 42 and 1 43 for details 1 18 Displaying Multiple Results Every time a new results file is loaded a new window is created but this is not immediately apparent as it will fill the main window obscuring the previous 19 results Use Cirl Tab to cycle through results this brings an earlier results window to the fore Ctrl Shift Tab cycles in the opposite direction Windows can be re arranged using the Windows menu The Cascade option will stack the windows so that the title bar of each window is visible The Tile option will show fit all of the results windows in to the main window reducing them as necessary The usual Windows controls can be used to maximise minimise or iconise windows and if results windows are iconised the icons can be neatly positioned using the Arrange icons menu item At the bottom of the menu a list of the available results windows enables a particular set of results to be selected To close and remove a set of results simply click on the close box but note that this version will not warn if the results haven t been saved 1 19 Exporting Results via the Clipboard Results can be copied to the Windows clipboard and pasted into other documents The clipboard is used to hold items being moved between appl
55. the Waveform drop down menu The LA100 can generate sine square triangular and saw tooth waves as well as DC The MiniSonic can generate sine waves and 1kHz 5kHz or 10kHz square waves 1 35 Panel Features Specific to the LA100 The LA101 output impedance can be set using the 100hm 75ohm or 600chm buttons Note that the output impedance of the rear XLRs is always 10ohms and that the front jacks are always 75ohm unless 600o0hm is selected this limitation applies when using the LA101 without a computer see section 2 21 on page 30 of the LA100 manual The ZC 6000hm option boosts the output level by an amount dependant on the selected output impedance to generate the selected level into a 6000hm load For example when using 6000hm output impedance selecting ZC 600ohm will increase the output by 6 02dB The Input Impedance buttons allow the input impedance to be switched between 600ohm or 10kohm The panel bar graph shows the measured level and always shows the same value as the numeric display unlike the LA102 bar graph which always shows the absolute level being measured For example if when measuring distortion on a 8dB tone the normalised distortion is 40dB then the bar graph and the numeric display will both show 40dB whereas the LA102 bar graph would show the absolute level 32dB The L and R buttons are used to select the input channel The Monitor volume slider controls the level of the LA102 s built in loudspeaker
56. tolerance packet at the end of the file The tolerance packet has the following packet header TOL The header should immediately follow the last graph packet no separating characters should be used The text following the comma contains the tolerance definition see section 2 8 for details on how to define a tolerance 51 e g TOL MS10 Self Test wt 1 0 1 25 0 1 0 livest Sy 5462554 15 55 eA Sy ese n 78 m 60 r 55 65 c 75 70 68 1 65 z 20 20 20 Appendix D Key Shortcuts There are several key shortcuts and most are listed on the relevant menus and buttons In the results window Ctrl O Ctrl S Ctrl P Ctrl Q Page Up Down Cursor up down In the Control Panel 52 F1 F2 F3 F4 F5 F6 F7 F8 F9 Alt L Alt R Open new results Save results Print results Run sequence Scroll results up down by a page Move results up down by a line Change frequency hold shift for fine Change level hold shift for fine Change range Left output on off Right output on off Mute both output channels restore outputs Select Left input Select Right input Index A Auto magic Autorange button B Bar graph Baud rate configuration Big Graph C CCIR CCIR Weighted CD Clipboard Close button COM port Command Window Comment Comms Connecting leads 26 25 38 22 19 20 25 30 38 15 5 6 30 43 44 5 Control Panel 6 13 15 22 23 25
57. tolerance points to be joined by straight lines but note that tolerance checking is still only applied at the specified frequency points i e the points listed in the frequency response table beside the graph Mask is used to change the tolerance mask colour Click on it and choose a colour from the standard colour picker 1 42 2 Graph Options Frequency Response Tab The Frequency Response tab controls the scaling and layout of Frequency Response graphs X range determines the scale used on the X axis If Auto is enabled the scale is chosen automatically for each graph If Manual is chosen the minimum and maximum values may be entered manually This can be used to zoom in on a particular frequency range Y range determines the scale used on the Y axis If Range is enabled then the range can be entered in dB in the range box This is a sliding range automatically chosen to include the peak level in the graph but extending over the specified range Selecting Limits allows the upper and lower limits to be specified manually These limits will be applied to all of the graphs so they should only be used when the graphs are all around OdB i e when normalisation is being used Grid density controls the number of horizontal or vertical grid lines Setting it to Coarse will reduce the number of grid lines while setting it to Fine will increase the number the actual number of grid lines is determined automatically Width and Height det
58. u 30 tolerances 36 Output channel 23 Segment Output frequency 23 spacing results 36 Output impedance 23 26 Send 14 18 2 Sequences 9 LA100 13 MiniSonic 15 repeating 15 user defined 14 16 Serial port 30 Sine waves 38 Software update 44 SWP button 27 SyncLink 25 T Technical support 43 Test level 14 Test results 7 15 19 Test sheet database 35 41 creating an account 41 introduciton 40 open database 42 uploading test results 41 Tolerance 4 9 17 19 36 46 always apply 37 arrows 33 definition 17 editor 18 graphical representation 19 33 mask 32 options 36 45 packet 51 set user tolerance 37 string 17 Tone bursts 38 Tool bar 7 Troubleshooting 43 True frequency 23 Try button 31 U Up down buttons 16 23 Userkey file 7 V Version history WwW Waveform Width Windows menu Windows metafile Word processors X X range Y Y scale Z ZC Impedance correction Zero crossing Zoom 45 26 33 20 20 21 20 33 33 26 38 24
59. ual page 49 Enabling direct triggering on the MiniSonic allows the sequence information to be passed to the measuring set internally see page 9 of the MiniSonic manual 29 Options 1 40 Options Menu The Options menu can be used to set various choices which determine the style of the results and also the default behaviour of various operations When an option is changed and okayed the effect is immediate and the current option settings are saved to disc as the default settings so they can be used every time the program is run 1 41 Comms Setting Most PCs have at least one serial port labelled COM1 If this is already being used the LA100 may be connected to another serial port by setting the COM port number here extra serial ports can usually be added by plugging in low cost expansion cards A USB to serial converter can also be used in which case the COM port to which it has been assigned will need to be established from the Windows Device Manager Start Control Panel System Hardware The baud rate and other communication settings are handled automatically r Comms port 1 C4 by the program and need not be set see appendix A if you suspect baud rate problems When Lin4WinXP detects the presence of either a MiniSonic or LA100 the device type is automatically detected and the software customises itself accordingly For example the MiniSonic s monitor volume cannot be controlled remotely so the co
60. ually from www lindos co uk lin4win html and copied over the existing Userkey dat in the Lin4WinXP installation directory normally in C Program Files The tool bar at the top of the main window provides the following functions 9 gt O nN g QAN e L ao PPS CY lt 8 AS EE EF SESS FEC PEE L 5 S EE SSS LEE SIS S LE EOSE CL Sve SF SLE SF FS LLL SC SE VV S EC SF e XQ AUF 0 PP O SS E E CIN Ce SI SIE SR EN SS ol LP oF LC O O ee N VY FM ao g S L X S FS SL AAAA E amp S SS A D g S S R X AAAA LK S IS KKM PFEF SMFS CFE TO SHS S50 hS 1 o0 g aa a These buttons apply to the graph last selected A single click on a graph will select a graph A double click will display the graph in the Graph Viewer Audio test results are displayed in the main window which uses a multi document interface MDI to enable multiple results to be displayed in sub windows within this main window The test results may be from automatic test sequences frequency sweeps data logging or test procedures It doesn t matter how they were generated as they are all treated in the same way All of the program s features can be accessed from the menus The button bar and control keys also give quick access to the common features for example Cirl P to print Ctrl S to save Ctrl O to open a file etc Some common operations can also be accessed by double clicking over the graph or text results Sequences can be run by entering a list of segme

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