AT-LA 500 USER MANUAL
Contents
1. By clicking on the Current Graph control the actual visualization area will be printed Otherwise the Print Range can be selected by the user by entering the initial Time or Sample Number From control and the final sample To control depending on the x axis scale The number of pages where the selected graph will be printed can be selected by entering its value in the Number of Pages control By clicking on the Print key it 1s possible to open a Print Preview window where self explaining print options can be selected Waveform Window Properties Pressing the button EK Waveform Graph Properties tab will be opened Waveform Graph Properties Background color Grids color Cursor List Major grid Minor grid X Grid Cursor color Tie Waveform height Minor grid A Pixels 1 RELEASE 2 0 FEBRUAR Y2006 47 AT LA500 USER MANUAL AT LA NAVIGATOR It is possible changing the background color cursors color grids color selecting T the grids will disappear Waveform height control will change the signal height on the graph Other common functions It allows dragging the graph Shows the Navigator on foreground XE IS e Rename a Window In the Workspace Navigator select the name of the window to be renamed click on it with the right mouse key then select Rename and insert the new name e Remove a Window In the Workspace Navigator select the name of the window to be removed click on it2. Active Technologies S r l WWW activetechnologies it AT LA 500 USB Logic Analyzer USER MANUAL RELEASE 2 0 FEBRUAR Y2006 AT LA500 USER MANUAL CONTENTS Contents INTRODUCTION aia a 5 SS A A M dp adu eeu E 5 OPERATING PRINCILEES a ri e 5 GETTING TARTED c M M 7 HARDWAREREOUIBEMBNES 2 5 a a a a a a a a a a a an IDE 7 MIRNA SS LENTE A EET E AE EEE N EE E E E 7 DIPPOSTOT TOOUIVOIONLS ao 7 INSTRUMENT DESCRIPTION ccce aaa a D MD PR a M M M a N 8 PROLES DESCRIPTION xsaccsupasesnasiasdasanotewanananacesscoasnsauicaauwaeaseuoaanaceaaesceareaaaauadawabatecausnsacese OS URS Id Uu MD CI CA I ED LE OUR DL DUE 10 INSTRUMENT DIS CONNEGTO Noites Sa i est U f eol OE 11 PROLE CONNECTION ado on cite vsssotenensanciaiseomsusnaroes 12 SOPIWARE LOADING irrita ctricos saaresentoremmear eite GERA USE 13 GUIDE TO THE FIRST ACQUISITION cccscccsccsccsscsscesccscescescesscsscsscescessescesscsscescescescessessesscscessessessessesscscescessessesseeseuss 15 PPODE CONNCCIO Nil 15 SO WIEN NASA aca 15 Usime Me Wizard do FOedie d DEOJOCI accu A a 15 RUIT TIT E AAA o AAA AOE eT Trey EOD E 18 ATSLASUUNAVIGATOR lt lt iris 20 MENU BAR aaah rs acta leet eee chase aac e as 21 n E E ES PORT Ee NENT E NET OER e 21 TO ices ctn MU as I c ccu Ce 21 SN E PE PEE 24 A PHE 21 COMMAND BAR ET T UT E E A EO A N 22 Wors POCE ICON
3. LA500 is used signals are associated by default to channels belonging to LA 0 e Pod assignment It allows selecting a signal or a bus to be modified e Added Signals It summarizes all the association performed a Settings Added signals DEC 1 SC Address RENT JE Se Data Fannt Waveform color Data ELTON JiData 6 5 JiData 5 Channel selection JiData 4 PETT Mi JiData 3 A Sl Data 2 Ji Data i Ji Data 0 t T xD add cancel Apply 2 To add a signal or a bus click on the New key or deselect the Added signals tree enter all required parameters name color bus width radix and channel then click on the Add key To remove a signal or a bus it must be selected on the Added Signals list and then click on the Remove key To modify a signal or a bus it must be selected on the Added Signals tree When the selected parameters have been modified click on the Apply key to make active all the modifications Note the definition of a bus formed by more than 32 signals may cause visualization problems RELEASE 2 0 FEBRUARY2006 29 AT LA500 USER MANUAL SETTINGS Channels This tab summarizes all associations created between channels and signals a Settings 2 lA 8 Ch 6 LA 0 LA 0 in the L A column is the default when a single AT LA500 is used It is possible to remove the association between a signal and a channel by selecting the appropriate list row and by clicking
4. it can be forced manually by clicking on the Force Trigger key during data acquisition If the sampling frequency is very low or if an external clock is used whose trigger condition is no longer verified data acquisition may stop or it can proceed very slowly and the message Filling Memories may remains visualized for a long time Use of the STOP key Data acquisition may be stopped at any time by pressing the STOP key If the STOP key is pressed before a trigger event occurred data acquisition is automatically terminated If the STOP key 1s pressed after a trigger event occurred for instance to abort a too slow memory filling data already acquired will be transferred to the PC for their visualization and or storage Tips Some tips allow improving data acquisition e Electrical contacts must be checked when connecting probes e Connect as many grounds as possible to the system under test All grounds are connected together therefore it 1s important to check all ground connections to avoid short circuits e Once probes have been connected check the input status on the Channels Status window to verify that the visualized behavior corresponds to the expected one e When active probes are used set the threshold level to a value suitable to the signal nature RELEASE 2 0 FEBRUARY2006 38 AT LA500 USER MANUAL AT LA NAVIGATOR e If data acquisition is performed in the State Analysis mode it is convenient to use active pr
5. 25V e LVCMOS 3 3 1 65V e LVDS 100mV The appropriate value can be selected by means of the Threshold Presets menu ring and then the Set all key must be pressed Note if an active probe is not connected to a Pod it is not possible to set a specific threshold voltage for the corresponding banks RELEASE 2 0 FEBRUARY2006 35 AT LA500 USER MANUAL SETTINGS Data Acquisition Channel Status Once one or more probes have been connected to the system under test the logic level of each input can be examined in real time This feature is activated by clicking on the Ga key in the Signal Navigator or from the Windows menu Inputs Status Windows command The opened panel is formed by two tabs Channel View and Waveform View Channel View oa Channels Status In the Channel view tab the status of each input is represented in real time by means of three symbols It indicates that a voltage below the threshold value is present on the corresponding L channel ES It indicates that a commutation is present on the corresponding channel rising or falling edge H Itindicates that a voltage above the threshold value is present on the corresponding channel RELEASE 2 0 FEBRUAR Y2006 36 AT LA500 USER MANUAL AT LA NAVIGATOR By positioning the mouse pointer on a channel icon a tooltip appears indicating the name of the signal associated to that channel If no signals have been connected to that channel the U
6. on the Remove Assignments key An association can be modified by selecting the appropriate list row and entering the new channel by using the menu ring All modifications become active by clicking on the Apply key RELEASE 2 0 FEBRUARY2006 30 AT LA500 USER MANUAL SETTINGS Triggering All trigger levels and conditions necessaries for data acquisition can be set in this tab s Setti ngs Level 4 ConditionA Me EE ES Level AIF A then Trigger Else if B then Jump to Levell J Levelt A IF A then Jump to Level B Else if B then Jump to Level E af Level AlF a then Trigger B Else if B then Jump to Level3 E JU Level3 AIA then Jump to Level4 B Else if E then Jump to LewelO Jf Levels 81 IF A then Trigger B Else if B then Mone d 3 54 o Edge AND Level Trigger when Equal E If more than one instrument are connected together by means of the AT XSS Expansion Bus the user can select the instrument where to set the trigger by using the menu ring Set trigger on Note the trigger event will be always generated evaluating only one of the connected instruments For a better acquisition is suggested to set the trigger settings on a middle positioned Logic Analyzer Trigger Levels AT LA500 permits to edit up to 31 trigger levels which are represented with the symbol Jf in the tree positioned on the left side of this tab To add a trigger level click on Add Level
7. the Search Forward hn key or on the Search Backward iii key The Search Cursor will move to the found value Export Data This function permits to export as text file the data visualized on the Data Window AF39 e Press the button Export Data to File 8 e On the window Export Data To File insert the sample range to export increasing the number of samples to export will automatically increase the cpu elaboration time and the hard disk space needed e Press Start e Insert the file name Export Data To File Begin Sample Numb UT TOF Please insert the data range you want to export to bet file End Sample Number Warning large data range mm increases the elaboration time and r the disk space used F a RELEASE 2 0 FEBRUARY2006 53 AT LA500 USER MANUAL AT LA NAVIGATOR Data Window properties Press the button EX and the Properties window will be opened Column Data Window Search Definition Column Marne ET Radix E hg Column Color On the Column tab it 1s possible to change every single column properties like the color Column Color the data radix Radix and the width Width On the Data Window tab the user can change the table background color Background color cursors and markers color Cursor color and the color scheme The Search Definition tab refers to the search settings of the Search paragraph Other common functions It allows adding one or more existing columns on the tab
8. 0 USER MANUAL SETTINGS Command bar The command bar is made of 5 keys whose functionality depends on the active panel Workspace o Signal Navigator Workspace icons 5 It allows creating a new project It allows opening an existing project It allows saving the current project Il allows launching the Wizard for the guided creation of a new project BN B It allows launching the software guide Signal Navigator icons Tin It allows visualizing the status of inputs in real time It allows configuring AT LA500 and the signals It allows launching the window for the management of multiple AT LA500 It allows opening a new Waveform Data or DAC Window Y El 1 l N It starts the data acquisition RELEASE 2 0 FEBRUARY2006 22 AT LA500 USER MANUAL SETTINGS Workspace This area contains a list of e all windows Waveform Window Data Window e DAC Window that have been opened for the current project e all saved settings e all saved acquisition BS Projec al Hu Waveform Windows E Waveform Window 1 j Ir Waveform Window 2 isa Data Windows ili Data Window 1 a DAC Windows DAC Window 1 bn e Settings Ld Acquisitions Note if the current data acquisition has not been saved a new data acquisition overwrite the current one The same condition applies for the current AT LA500 settings Tips e By double clicking with the mouse left button on a Waveform
9. 6 3 AT LA500 USER MANUAL CONTENTS NAAA 45 CONCH alas aa 46 FAME WAY O a A adas 47 Waveform WindoW ETODE MES ai iaa 47 COUPE COMMON UNCINONS aaa 48 SIGNAL NAVIGATOR BUNCIIONS upon id 49 Adda SUGNAL OF a Group Of D1 CIOS dis 50 DATA WINDOW aicaticu ana etis EM etc lot id thoudanees 51 AS a e 51 Ly SUVS TUO TO MESA NS dos 52 COMO LC Ca TOP T aE unto etl tuU E td eu sp Sue ELE Ee Eee E Sep Eid esci qa eus 52 DOG MRE ORC tantu Au MD RM ALLEM e M ERE ES qu IEE Er E 52 A Tp E 53 Data Window Proper TUS a teu Na enti aaa 54 Other COMMON JUN ON e EE OLD 54 DAVID S 55 CUT SOV n T TP een eaeed 56 IS TES CES CESTO TUCU UDC Sd co 56 GOTO or Ma AAA 56 PUNE PAC WAV Cf OVI m AAA AAA AAA AAA A P 57 DAC Window TOPET EN ii sii Caan wales Gene AAA A A Dome bu AAA 58 OLIVET COTTA OW JUNCTIONS AAA AAA AAA EA AAA AA A a Sg RGN AAA SES 58 ATASS EXPANSION DS dd 60 POL XO SS EXPANSION BUS PLUGIN a ia A AA rU usd a ur adds 60 Remove anr AT LAJU a a asa 62 Ada A T LAJO us xsara Matta Meu iue Moda avert eegte rename iocos em ed eodd 62 RELEASE 2 0 FEBRUARY2006 4 AT LA500 USER MANUAL INTRODUCTION Introduction Overview AT LA is an instrument able to acquire digital data through 36 channels divided in 4 banks of 9 channel each and to visualize their time behavior thanks to the dedicated software AT LA is available in different configurations depending on th
10. ASE 2 0 FEBRUAR Y2006 42 AT LA500 USER MANUAL AT LA NAVIGATOR Waveform Window The Waveform Window allows analyzing acquired data in a graph containing digital waveforms Single signals are visualized as digital signals while grouped signals are represented as buses Selected Cursor 1 Selected Cursor 2 ww Wave orm Window 1 Data 7 Data amp Data 5 Data 4 Data 3 Data 2 Data 1 Dats 0 Time or Sample Number can be used as x axis scale If a Time scale was selected it is possible to switch at the Sample Number scale by pressing on the key The key icon will automatically change to and by clicking on it the Time scale will be switched to Time Note If a Waveform Window is opened before a data acquisition signals and their names will be not visualized After the first data acquisition signals will be visualized normally Note Signals that have not been associated to any channel are constantly visualized at a low level RELEASE 2 0 FEBRUARY2006 43 AT LA500 USER MANUAL AT LA NAVIGATOR Cursors Cursors are useful to identify and enlighten data that therefore may be recognized or found easier In addition cursors can be used to measure and to analyze acquired data Menu ring Cursor I Selected Cursor 2 contain the list of all cursors added in the graph selecting a 1 cursor and pressing the button Ade the graph will be centered on the selected cursor Selected Cursor 2 Selected
11. Cursor 1 Go to selected target Position Position Delta Las ea Waveftorm Window gt All windows allocate a default cursor called Search Cursor that is moved automatically during a data search operation The user however can create remove as many cursors as needed ej gt Add a cursor Click on the ah key A new cursor will be added to the visualization area that will be centered on this new cursor The cursor name is incrementally assigned by the system The list of available cursors in the Selected Cursor I and Selected Cursor 2 menu rings will be automatically updated e Removeacursor Select the cursor to be removed in the Selected Cursor 1 menu ring and click on the LY key The list of available cursors in the Selected Cursor 1 and Selected Cursor 2 menu rings will be automatically updated The Search Cursor cannot be removed e Move acursor Drag on the selected cursor RELEASE 2 0 FEBRUARY2006 44 AT LA500 USER MANUAL AT LA NAVIGATOR Using cursors to measure The difference between two user selected cursors in automatically measured and shown The difference scale depends on the selected x axis scale for Waveform Window Time scale or Sample Number scale by pressing the button The difference is calculated as Position of Selected Cursor 2 minus Position of Selected Cursor 1 Therefore the two specific cursors to be used for difference calculation must be selected in the Selected
12. Cursor I and Selected Cursor 2 menu rings respectively Any time one of the two selected cursors is moved their difference 1s automatically updated and shown in the Difference indicator In the Waveform Window when the Time scale is chosen for data visualization it is possible to A calculate the difference also in terms of frequency by clicking on the key The icon key will 1 switch automatically to a and the difference will be calculated in a Sample Number scale By 1 clicking on the a key the difference will be calculated again in a Time scale Go To Selected Target The Go to selected target menu ring allows selecting the position where the Search Cursor is going to be moved within the visualization area The possible options in the Go to selected target menu ring are e Trigger the Search Cursor is moved to the trigger event and the visualization area is centered on it e Selected Cursor 1 the Search Cursor is moved to the position of the cursor selected in the Selected Cursor 1 menu ring and the visualization area is centered on it e Selected Cursor 2 the Search Cursor is moved to the position of the cursor selected in the Selected Cursor 2 menu ring and the visualization area is centered on it e Begin the Search Cursor 1s moved at the acquisition begin and the visualization area starts with the acquisition begin e End the Search Cursor 1s moved at the acquisition begin and the visualization area end
13. E 2 0 FEBRUARY2006 32 AT LA500 USER MANUAL SETTINGS If no trigger conditions on logic levels have been set for any signal the trigger conditions on logic levels are always considered as verified The trigger condition set on logic levels is useful when the trigger event must be detected for a specific pattern By using the Level Condition menu ring it is possible to select among several conditions for trigger events on logic levels e Trigger when Equal The trigger event occurs when the state of the evaluated signals is equal to the specified pattern e Trigger when Not Equal The trigger event occurs when the state of the evaluated signals is different from the specified pattern e Trigger when Changed The signals selected for a trigger event on logic levels are examined when data acquisition starts These sampled values will constitute the reference pattern The trigger event occurs when the state of the selected signals is different from the reference pattern The conditions chosen by the user on logic levels are ignored AT LAS00 will simply use the information related to which channels are to be examined for trigger detection Relationship between trigger conditions A relationship between trigger conditions on edges and trigger conditions on logic levels can be set by the user by using the Trigger condition menu ring Several options are available e Edge OR Level A trigger condition occurs when one between an edge
14. FEBRUAR Y2006 56 AT LA500 USER MANUAL AT LA NAVIGATOR Print DAC Waveform Press the button gt Print Manager window will be opened Print Manager a x Print Range som JM o EN m A Number of Pages J Current Graph Print Cancel e Select the graph range that you want to print e Change the number of pages to print e Press Print for the print preview and printing the DAC Window fai Al Print Preview Prep Mame Progen 1 LL Vm NES Li TCR a al i A z A A Jolm 1 9547 35 555 Se 516 31 643 311 04 35 606m 35 5588 35 87 35507 35 01 Time f RELEASE 2 0 FEBRUARY2006 57 AT LA500 USER MANUAL AT LA NAVIGATOR DAC Window Properties Press the button ER DAC Window Properties will be opened DAC Window Properties Major grid Minor grid Major grid Minor grid It 1s possible to change the background color Background color cursors color grids color X Axis allows to change from sample visualization to time visualization Lower Value and Upper Value allows setting Y Axis scale Other common functions JB Permits Zoom in zoom out zoom fit zoom auto Allows dragging the graph Shows the Navigator on foreground H Sl lE rm wu Changes X axis data visualization RELEASE 2 0 FEBRUAR Y2006 58 AT LA500 USER MANUAL e Rename a Window e Remove a Window e Save a Window RELEASE 2 0 FEBRUAR
15. MANUAL SETTINGS LA Properties This tab contains the description of the basic characteristics of the connected instruments and it allows setting the threshold levels for each bank only for probes supporting this option E Settings t LA O w 500 MHz zM Samples 0 0 Passive Probe Active Probe i 1 5 x r Set all When a single AT LA500 is used the LA Number menu ring is stuck at the default value LA 0 The visualized information are e Maximum sampling frequency allowed by the instrument e Memory depth available for data acquisition e Firmware version e Probe type connected to Pod A e Probe type connected to Pod B e Device status a green led indicated a correct operation The threshold for each bank can be set manually by writing its value in V steps of 20 mV in the corresponding control Depending on the probe type the threshold voltage must be confined in a range automatically set by AT LA500 when the probe is plugged in Furthermore it 1s possible to set all thresholds to the same value by entering the selected value in the Set All to control and by clicking on the Set key In addition for sake of simplicity some threshold voltages are already available for the mostly used logic families e TTL 1 5V e CMOS 2 5V RELEASE 2 0 FEBRUAR Y2006 34 AT LA500 USER MANUAL SETTINGS e ECL 1 3V e PECL 3 7V e LVPECL 2V e LVCMOS 1 5 750mV e LVCMOS 1 8 900mV e LVCMOS 2 5 1
16. OR Cursors Cursors are useful to identify and enlighten data that therefore may be recognized or found easier In addition cursors can be used to measure and to analyze acquired data Menu ring Cursor 1 Selected Cursor 2 contain the list of all cursors added in the graph selecting a cursor and pressing the button _t_ the graph will be centered on the selected cursor e Drag on the selected cursor to move it e Press the button A to add a cursor the cursor will be automatically placedone the graph center e Press the button to remove the selected cursor on the Selected Cursor menu ring Using cursors to measure Delta indicator shows the difference in sample or time Delta X and in Volt Delta Y between selected cursor position and selected cursor 2 position Selecting Delta X will be in samples otherwise in time Move the cursor Selected Cursor 1 to the position that you want to measure Get the position of the Selected Cursor 1 Move the cursor Selected Cursor 2 to the position that you want to measure Get the position of the Selected Cursor 2 Get the difference between the two selected cursors Go To Selected Target The Go to selected target menu ring allows selecting the position where the Search Cursor is going to be moved within the visualization area e On the menu ring select the Trigger option e Press the button Go to ele e The Search Cursor will move to the Trigger event RELEASE 2 0
17. S mirano EE 22 SPONOL IN VELO FL CONS AA A A A A an 22 WOPR SPACE MO A oat Deny Ace MO re SUR C O ae 23 SIGNAL INAV IGE OR rp tektites ETUR 29 104 ND GS e Po E E N S E TE IN A E E A N TEO 26 SANTE CN TE T TEUER A EA 26 Tung ANGIY SUS iaa iaa 26 NUNCA SUS T 27 POW AMEE ORI More RES a EE a E A E EEE 29 Quo QNID a daa 30 TRIGGERING oinn oia 31 JUAN EAT lada 31 PAPES ANALES denis diis i vetu A dias 92 CONDOS OI CG OCS aout a E t ERE a em rU eese M HIM A MU E e E UE 22 CONGIMIONS CHAO CIC IOV CUS usse Cu es e es eee s c e pte dc M cM UM LIN IE E 32 Relanonship Detweem trigser CONGILIONS sene eue e cun acp does e chr Ie pa d mee Re 33 ERE uM EU NIMM M M M M E RM M ME a E LT 33 I PROPERTIES c T E E 34 DATACACOUISETION Si vtov eoeaee ve vina e ocevae e eor eve abre ed eU dU N E koc elus dea viet ctis A ao ces CHE Toe 36 CHAWNEIBSSTATUSiS dic os 36 SUDAN PTE H A 36 JY T A A M Sy STAR PA DA TAA OUTS IO Na duties 38 DATA VISUALIZA TION De A A M 40 CREATE ANEW WINDOW eise uei A A bene UM qe ME seven epic IM RD Ee or ats IUE 40 OPEN ANCEXIS LING WIND ceto aeter a 42 WAVE TORM M INDON ionassutui dtes sient tud t cp M tUi M EL RU M s MAS eU Lote 43 CI SOS e PARE cr EIT LM M LM ML LM IM LI LI ME IE 44 USNE CHESOPS TOWHROOSUTO S e RR ED dm ici 45 RELEASE 2 0 FEBRUAR Y200
18. Type the project name indicator of the Project Wizard panel write Projectl If necessary modify the selected directory Click on the Next key Projectl E i Ci My Projects e Inthe Sampling Method indicator of the Choose the sampling method panel select Normal Timing Analysis e click on the Next key e In the Sampling Rate indicator of the Normal Timing Mode panel select a frequency at least 324 times higher than that of the signal to be acquired then click on the Next key e Inthe Waveform Name indicator of the Define channels connections panel write Signall in the Bus Width indicator select 1 in the Radix indicator select Binary Finally select a color for instance yellow by clicking on the Waveform Color indicator then click on the Next key RELEASE 2 0 FEBRUARY2006 15 AT LA500 USER MANUAL GETTING STARTED Signali Binary Select Signall in the table of the Define the channels conntections panel and verify that it is associated to the channel O of AT LA then click on the Next key In the Add Another Waveform panel since no other signals are to be added click on the Next key In the Trigger Condition of the Choose the trigger type panel select Edge AND Level set Level Condition to Trigger when Equal set the Pretrigger value to 50 then click on the Next key Edge AHD Lewel Trigger when Egual Lows If an active probe has been connected to Pod A in the Bank O of the Choose the banks thre
19. Window name on a Data Window name or on a DAC Window name in the Workspace the corresponding window will be opened e By double clicking with the mouse left button on a acquisition saved in the Workspace Workspace the selected acquisition will be loaded in a new window e By double clicking with the mouse left button on a setting saved in the Workspace AT LA500 will be set with the selected configuration RELEASE 2 0 FEBRUAR Y2006 23 AT LA500 USER MANUAL SETTINGS e By double clicking with the mouse left button on a Workspace item a menu appears that allows opening renaming or removing the selected item RELEASE 2 0 FEBRUARY2006 24 AT LA500 USER MANUAL SETTINGS Signal Navigator This area contains a list of all signals present in the Waveform Data or DAC Window currently selected AT LA Navigator E EJ File Edit Window Help fl Signal Ch O LA 0 Ch 8 LA 0 Ch 7 LA 0 Ch 6 LA 0 Ch 5 LA 0 Ch LA 0 Ch 3 LA 0 Ch 2 LA 0 Ch LELA 0 The Signal Navigator area is divided in two columns the former is named as the window currently selected and it indicates all the included signals the latter summarizes the physical connections between the instrument and the signals LA 0 is the default when a single AT LA500 is used e If a Waveform Window has been selected it is possible to modify the visualized signals order by dragging them in the desired location e If bus
20. Y2006 AT LA NAVIGATOR In the Workspace Navigator select the name of the window to be renamed click on it with the right mouse key then select Rename and insert the new name In the Workspace Navigator select the name of the window to be removed click on it with the right mouse key then select Remove Press the Save all button on the Workspace 59 AT LA500 USER MANUAL AT LA NAVIGATOR AT XSS Expansion BUS To increase the number of available channels without degrading performance or sampling frequency up to 8 AT LA500 can be connected by using the AT XSS Expansion bus which allows synchronizing and controlling all AT LA500 The software controls all AT LA500 without any additional operation by the user The presence of AT XSS connection is automatically recognized by the control software which manages all connected AT LA500 as a single Logic Analyzer with a higher channel number Note When a data acquisition is performed using several AT LA500 connected together via the AT XSS expansion cable it is convenient to use the same probe type for each instrument to minimize propagation skews among the different AT LA500 Note For a better acquisition it is suggested to connect all AT LA500 in consecutive slots of the AT XSS expansion bus and to set the trigger event on an AT LA500 positioned in an intermediate location AT XSS Expansion Bus Plug In To connect several AT LA500 it is necessary e Connect the AT LA500 b
21. a new trigger level will be added at the end of the list To remove a trigger level click on Remove this command will remove the last level from the list To clear all the trigger settings and to get the default trigger conditions click on Clear Each trigger level has 2 trigger condition A and B Selecting one of the conditions A or on the tree the correspondent settings pattern will be automatically updated on controls indicators at the right side of this tab For each condition besides the edge and level settings of the channels that properly identify the condition itself the user by using the menu ring Action can also set up the action to do when the condition appears RELEASE 2 0 FEBRUAR Y2006 31 AT LA500 USER MANUAL SETTINGS The possible actions are None The condition happening will be ignored Never Trigger Trigger The condition happening leads to a Trigger event Jump to Level 0 The condition happening leads to a jump at trigger Level 0 Jump to Level 1 The condition happening leads to a jump at trigger Level 1 Jump to Level 2 The condition happening leads to a jump at trigger Level 2 Jump to Level N The condition happening leads to a jump at trigger Level N dle O where N is the number of the present trigger levels Note whenever the acquisition starts the Logic Analyzer waits for the conditions at Level0 Edges and Levels In order to set the condition A or B the user must prop
22. arts from the Search Cursor location e User selected cursor Search starts from the location of a cursor already created by the user e Sample Search starts from the Sample Number entered in the Position control The Select Signal Group menu ring allows selecting among defined single signals or group of signals Only signals or groups of signals that have been visualized in the current window appear in the menu ring Depending on the signal type selected in the Select Signal Group menu ring the Browse by menu ring contains different options If a single signal has been selected the possible options are Rising edge or Falling edge If a group of signals has been selected the only possible option is Value and the pattern value must be entered in an hexadecimal base in the Value control The Value s base can be changed by clicking on the x control on the right hand side of the Value control To make active the selected criteria click the OK key and the Properties window will be closed In the visualization window click on the Search Forward ih key or on the Search Backward E key The Search Cursor will move to the found value RELEASE 2 0 FEBRUAR Y2006 46 AT LA500 USER MANUAL AT LA NAVIGATOR Print Waveform Waveform or a DAC Window can be printed by clicking on the key The Print Manager will be opened Print Manager Print Range From POSEE To EET Number of Pages r uu Current Graph Print
23. avigator and select Add Group Signal to window The following window will appear Select within the tree of the available signals the signal or the buses to add to the Waveform Window multiple selection is available then click on the Add key The Signal navigator and the selected visualization window will be automatically updated Add Group Signal to Window Group Clock Data Data 7 Data 6 Data 5 Data 4 Data 3 Diata 2 Data 1 Data 0 RELEASE 2 0 FEBRUAR Y2006 Ch LA Ch 0 LA 0 Ch amp LA 0 Ch 7 LA O Ch 6 LA 0 Ch 5 LA 0 Ch LA 0 Ch 3 LA 0 Ch 2 LA 0 Ch LA O P 50 AT LA500 USER MANUAL AT LA NAVIGATOR Data Window In the Data Window acquired data are visualized numerically in columns each one representing a signal or a group of signals Two additional columns indicate the sample number Sample and the relative or absolute time Timestamp Data Window 1 8 eH AT LA Cursor 1 iss Delta Times Select Mark USB Lo A 7 cursor MEME SC A gic Analyzer Sample pe ata 16 Sample addr daa d a a aso y e Ls aes Ca E AN 3 ao pao E A NOA EE e jo 0 O CA CR E a AN Ca A E 9 a ao uoo Jo Jo T gu e pa cmt EA E A A rs 0 paso A A 1s E o o sym 22 Jo JO j O A Do au Note Signals that have not been associated to any channel are constantly visualized at a low level Curs
24. cessor e 512 MBytes RAM e 1024x768 video resolution e USB 2 0 connection RELEASE 2 0 FEBRUARY2006 7 AT LA500 USER MANUAL GETTING STARTED Instrument description x CUBBHFHRHHHHHE E 0 5 i tine HHHH AEAEE ii FEDT MES AT LA500 Front view AT EXPANSION BUS POWER DG IN AT LA500 Rear view e Pods A and B probe connectors e Power led it indicates whether the instrument is ON RELEASE 2 0 FEBRUARY2006 8 AT LA500 USER MANUAL GETTING STARTED e Status led it indicates the instrument status as further specified e Power connector connector for the external power supply e Power on switch e USB connector e AT expansion bus connector connector for the AT expansion bus a dedicated cable used to connect several instruments Status Led The status led may be ON OFF or blinking and it indicates different operating conditions The status led is ON when e The instrument is ON it is connected to the PC and its drivers have been correctly installed The status led is OFF when e the instrument is switched on but is not connect
25. condition or a logic level condition is detected e Edge AND Level A trigger condition occurs when an edge condition and a logic level condition are satisfied simultaneously e Edge BEFORE Level A trigger condition occurs when an edge condition has been detected at least once before that on logic levels e Edge AFTER Level A trigger condition occurs when an edge condition has been detected at least once after that on logic levels e Always Trigger A trigger condition occurs automatically when data acquisition starts Any setting on edges or on logic levels will be ignored e Never Trigger Trigger is inhibited Any setting on edges or on logic levels will be ignored A trigger event however can be activated manually during data acquisition Note the trigger event is detected in an asynchronous way independently of the sampling frequency If this frequency is too low or an external clock is used the trigger event even if correctly detected may not be visualized in the Waveform Data o DAC Windows Pretrigger The Pretrigger control allows specifying the position in which the trigger event will be located with respect to the AT LA500 memory If the most meaningful data must be sampled after the trigger detection low pretrigger percentage must be selected On the contrary if signal evolutions before trigger event must be analyzed a high pretigger percentage 1s more suitable RELEASE 2 0 FEBRUARY2006 33 AT LA500 USER
26. data acquisition for the current project Save Current Acquisition As it allows saving the current acquisition with a different name Save Settings As it allows saving the current settings with a different name Recent Projects it allows loading rapidly one of the last 8 saved projects Exit it allows closing the program Note each saved data acquisition requires on the hard disc a dimension in bytes that is 5 times the instrument memory dimension Edit Run it starts a data acquisition Triggering it allows modifying trigger settings Sampling it allows modifying clock and sampling frequency settings Add Group it allows adding a signal or a bus to the set of global signals Threshold Levels it allows setting the threshold level for each bank only for probes supporting this option Setup Wizard it launch the Wizard for the guided creation of a new project Settings it allows configuring the AT LA500 and the signal to be acquired Window Help New Window it allows creating a new Waveform Data 0 DAC Window If a new window is created before data acquisition the window is empty Inputs Status Window it allows visualizing the inputs status in real time Channel Setting Window it allows visualizing a summary of the set connections Contents it loads the program help About it shows the information related to the current software release RELEASE 2 0 FEBRUARY2006 2 AT LA50
27. dows at any time RELEASE 2 0 FEBRUARY2006 40 AT LA500 USER MANUAL ind Wizard New Window What type of data window would you like to create PA RESO EEENE AA A a aua Ta pun EX deme m Ai ata Waveform Window k d Within the Wizard New Window panel AT LA NAVIGATOR e Select the window type among Waveform Window Data Window or DAC Window by means of the menu ring e Click on the Next key e In any wizard page insert the self explaining required information and then click on the Next key e To terminate the creation of a new window click on the Finish key e A new window whose name is automatically assigned by the system will be opened and it will be inserted in the Workspace in the directory corresponding to its type RELEASE 2 0 FEBRUARY2006 41 AT LA500 USER MANUAL AT LA NAVIGATOR Open an existing Window All windows that have been created for the current project appear in the Workspace Tree of the AT LA Navigator To open one of these windows it is sufficient to double click on its name or click on its name with the right mouse key and select Open in the menu ring If the selected window was already opened it will be positioned on foreground AT LA Navigator E File Edit Window Help hele Projecti cru Waveform Windows En Ww aveform Wine d Cria Data Windows fi Data Window 1 cg DAC Windows ADAC Window 1 15 Acquisitions RELE
28. e Before loading the AT LA500 control software it is necessary that the instrument is switched ON and connected to the PC and that the drivers have been correctly installed If the Logic Analyzer is switched OFF or if it is non connected to the PC the software DEMO version will be loaded Once the software has been loaded the Getting started window appears At this point a new project can be created an existing project can be opened the Wizard can be launched The available options are e Open an Existing Project it allows opening an existing project The project to be opened can be selected from the Existing projects list or can be searched by using the Browse key e New Project it allows creating a new project entering its name and working directory e Launch Wizard it allows launching the Wizard that guides the user during the basic phases required to create a new project Getting Started Open an Existing Project New Project C Launch Wizard ae Project 2 C Documents and Settings Emanuele Desktop ATLogicExeWMy Projects Project 1 Project 1 prj Once the desired option has been selected it is possible to access to the AT LA Navigator the main software panel that allows controlling the AT LA500 setup and the acquisition window By clicking on the Edit Settings and then on the LA Properties tab it is possible to access to the information related to the connected instrument In particular the following i
29. e maximum available memory varying from 2M a 4M samples AT LA is connected to the system under test by means of probes with different electrical characteristics depending on the signals to be acquired Each probe supports 18 channels divided in two banks of 9 channel each Each probe is hot pluggable and is automatically recognized Four independent and programmable thresholds are available one for each bank of 9 channels and used by active probes to discriminate between low and high levels Data acquisition starts when a triggering event is detected by the instrument The trigger can be configured by the user by selecting the suitable conditions on signal edges or on the input signal levels Furthermore it is possible to generate internally a trigger event so that data acquisition 1s independent of applied signals and it is performed automatically free acquisition or enabled by the user manual acquisition Once data acquisition is terminated data are transferred to the PC through a USB 2 0 or a USB 1 1 connection and then visualized as waveforms or values AT LA can sample input signals by using an internal clock signal Time Analysis whose frequency can be reduced on the basis of the signal to be acquired or it can synchronize signal sampling to a signal clock provided by the system under test State Analysis Operating principles Digital signals acquisition means i to sample input signals ii to convert this values in logic valu
30. ed to the PC e the instrument is switched on and it is connected to the PC but its drivers have not been installed e the instrument has been disconnected following the procedure described in the Remove an AT Logic Analyzer paragraph The status led is blinking when e The trigger conditions are set e The Settings window is opened e Input status is visualized e The Plug In Manager window is opened RELEASE 2 0 FEBRUARY2006 9 AT LA500 USER MANUAL GETTING STARTED Probes description Probes have to be connected to the testing board by means of opportune connectors Regarding the probes connected to the Pod A the corrispondence between the pins and the number of channels is reported in the following tables Bank O Ch 8 0 Regarding the probes connected to the Pod B the corrispondence between the pins and the number of channels is reported in the following tables Bank 2 Ch 26 18 Bank 3 Ch 35 27 RELEASE 2 0 FEBRUAR Y2006 10 AT LA500 USER MANUAL GETTING STARTED The corrispondence between the channels and the pod cables colors 1s the following Channels Colors Pod A Pod B Bank 0 Bank 1 Bank 2 Bank 3 Brown 0 9 18 2j Red 1 10 19 28 Orange 2 11 20 29 Yellow 3 12 21 30 Green 4 13 22 3 Blue 5 14 23 32 Purple 6 15 24 33 Gray 7 16 25 34 White 8 17 26 35 All black cables are ground connected Instrument disconnection Before disconnectin
31. erly set the state of the Logic Analyzer channels To set up a condition each channel state can assume the following attribute Don t care the signal will be ignored High logic level Low logic level Rising edge Falling edge a eh em H Any edge By positioning the mouse pointer on a channel icon a tooltip appears indicating the name of the signal associated to that channel If no signals have been connected to that channel the Unconnected message will appear on the tooltip Note If no probes are connected to a POD the corresponding channels are not available in the trigger tab Some channels can t also be available if they are used as Clock sources on State Analysis mode Conditions on edges For each signal it is possible to indicate whether the trigger condition must be detected on a rising edge on a falling edge or for any of the two edges When the trigger conditions have been set on edges of several signals the trigger event will be determined by the occurrence of at least one condition If no trigger conditions on edges have been set for any signals trigger events on edges will never occur Conditions on logic levels For each signal it is possible to indicate whether the trigger condition must be detected on a high or a low logic level When the trigger conditions have been set on logic levels of several signals the trigger event will be determined by the occurrence of all conditions simultaneously RELEAS
32. es O and 1 111 to organize these values in a set of waveforms To establish the logic value of a sampled signal it is necessary to compare the input value to a reference voltage called threshold that can assume a fixed value or can be varied depending on the used probe If the input value is greater then the threshold it will be converted to a high logic state 1 otherwise it will be converted to a low logic state 0 Threshold 0000011111100 0 RELEASE 2 0 FEBRUARY2006 5 AT LA500 USER MANUAL INTRODUCTION To detect the trigger event starting data acquisition the signal status must be monitored continuously The operating principle of a Logic Analyzer can then be schematically represented as External clock System under test Probes Sampler Memory Internal l Trigger Prescaler clock control Note this manual refers to a single AT Logic Analyzer However since up to 8 AT LA can be connected together to increase the number of examined channels up to 288 RELEASE 2 0 FEBRUARY2006 6 AT LA500 USER MANUAL GETTING STARTED Getting started Hardware requirements Minimum system requirements e Microsoft Windows 2000 or XP operating system e Pentium III processor e 128 MBytes RAM e 100 MBytes available on hard disk for software installation e 500x600 video resolution e USB 1 1 connection Suggested requirements e Microsoft M Windows XP operating system e Pentium IV pro
33. es are present within the project they will initially appear as closed To expand or close again them it is sufficient to click with the left mouse button on the symbol close to the bus names The selected Waveform Window will be modified accordingly e By clicking with the right mouse button on a signal name or on a bus name a popup menu will appear that allows renaming the signal or the bus or modifying the signal or the bus properties for instance by changing their visualization color or adding a new signal or a new bus RELEASE 2 0 FEBRUARY2006 25 AT LA500 USER MANUAL SETTINGS e Ifa Data Window or a DAC Window has been selected a bus expansion does not modify its visualization Signal dragging is not allowed Settings The Settings panel allows configuring AT LA500 for a correct acquisition It is divided in several tabs Sampling Add Waveform Channels Triggering and LA Properties During settings configuration the status led of the selected AT LAS500 will blink to indicate which instrument is under configuration Sampling Within the sampling tab it is possible to set the clock source and the sampling frequency Furthermore the Memory depth i e the number of available samples depending on the instrument version is shown Two sampling modes are available within the Sampling Method menu ring Normal Timing Analysis and State Analysis Timing Analysis When this sampling mode is selected data acquisition is
34. esponding channels are not available for clock selection RELEASE 2 0 FEBRUARY2006 27 AT LA500 USER MANUAL SETTINGS For each clock it is possible to select the event triggering data acquisition The possible choices are Don t care the signal will be ignored High logic value Low logic value Rising edge Falling edge TETE Any edge Each sample will be acquired when at least one condition is verified on the signal edges and at least one condition on the signal levels The Resulting clock equation indicator summarizes the logic condition that has been set Note at least one condition on an edge of at least one clock must be set Note before commuting to an external clock the instrument requires an initialization phase Samples acquired during this phase are meaningless RELEASE 2 0 FEBRUARY2006 28 AT LA500 USER MANUAL SETTINGS Add Waveform This panel allows specifying the names and the connections of the signals or buses to be acquired Several controls are present e Name it contains the name of the signal or of the bus to be created e Bus Width it sets the bus width a 1 indicates a single signal e Radix it specifies the basis to be used for signal visualization Possible options are Hexadecimal Decimal Octal Binary None e Waveform Color It sets the color for the corresponding waveform e Channel Selection It allows associating an input channel to a signal When a single AT
35. g or switching OFF an AT LAS500 it must be disabled by clicking with the left mouse button on the icon on the application bar and by selecting Safely remove USB Logic Analyzer Note Ifan instrument that has not been disabled is switched off or disconnected its software may not work properly Furthermore to remove the instrument when the software is under execution it is necessary to use the plug in panel RELEASE 2 0 FEBRUARY2006 11 AT LA500 USER MANUAL GETTING STARTED Probe connection Data acquisition requires at least one probe connected to the instrument Probes can be plugged in or removed even when the instrument is on and the software is under execution Any time a probe is connected or removed the software notifies the event and consequently enables or disables the setup parameters Note Never remove a probe during data acquisition acquired data may not be coherent Probes must be connected to the system under test by means of the provided connectors following the corresponding enumeration for signals and grounds Signals present on a probe connected to Pod A correspond to channels 0 17 while those present on a probe connected to Pod B correspond to channels 18 35 Note All ground connectors are electrically connected A wrong connection may cause short circuits and damage the system under test RELEASE 2 0 FEBRUARY2006 12 AT LA500 USER MANUAL GETTING STARTED Software loading Not
36. iption of the operations that can be executed on a Waveform Window please refer to the corresponding section of this manual Click on the Exit key to close the Waveform Window In the Window menu of the AT LA Navigator select New Window Select Data Window and then click on the Next key RELEASE 2 0 FEBRUARY2006 18 AT LA500 USER MANUAL GETTING STARTED Wizard New Window i What type of data window would you like to create o pe mani Cancel e Select Choose columns waveforms from Signal List and then click on the Next key e Select Signall from the left column then click on the gt gt key to add it to the list of signals to be visualized Click on the Finish key to open a Data Window In this way a table containing the values of the acquired signal samples is visualized Wizard New Window Available signals Signals to display Signali gt Signali Bm e Click with the mouse right button and select Go To Trigger Event The table is centered in correspondence of the trigger event For a description of the operations that can be executed on a Data Window please refer to the corresponding section of this manual RELEASE 2 0 FEBRUAR Y2006 19 AT LA500 USER MANUAL SETTINGS AT LA500 Navigator AT LA Navigator allows controlling all settings related to the instrument and to the open acquisition windows Closing the AT LA Navigator means to exit from the instrument control
37. le nin It allows deleting one or more columns e Shows the Navigator on foreground e Rename a Window In the Workspace Navigator select the name of the window to be renamed click on 1t with the right mouse key then select Rename and insert the new name e Remove a Window In the Workspace Navigator select the name of the window to be removed click on 1t with the right mouse key then select Remove e Save a Window Press the Save all button on the Workspace RELEASE 2 0 FEBRUARY2006 54 AT LA500 USER MANUAL AT LA NAVIGATOR DAC Window The DAC Window allows visualizing the acquired data in a graph representing the digital to analog conversion of a selected signal or bus This feature is useful to test the correct behavior of Digital to Analog Converters DAC Time or samples are represented on the x axis while the analog signal amplitude in V is represented in the y axis Selected Cursor 1 Selected Cursor 2 Position Position Delta 5 DAC Window 1 CTARA Time or Sample Number can be used as x axis scale iz If a Time scale was selected it is possible to switch the Sample Number scale by pressing on the key The key icon will automatically change to and by clicking on it the Time scale will be switched to Time Note Signals that have not been associated to any channel are constantly visualized at a low level RELEASE 2 0 FEBRUARY2006 55 AT LA500 USER MANUAL AT LA NAVIGAT
38. nconnected message will appear on the tooltip When a single AT LA500 is used the Select Logic Analyzer menu ring is stuck at the default value LA 0 Waveform View If signals have been associated to the input they will be represented in the Waveform View tab ina graph similar to a Waveform window This option is useful for instance to detect the values of bus signals Channels Status Channel View WaveForm View Address 1 Addressz Address3 Address Address Datad Datal Dakaz RELEASE 2 0 FEBRUAR Y2006 37 AT LA500 USER MANUAL AT LA NAVIGATOR Start a data acquisition Once AT LA500 has been set correctly data acquisition can be started by clicking on the key of the Signal Navigator or through the Edit menu Run command The following window appears showing the acquisition status The possible options are e Waiting for trigger at Level X AT LA500 is waiting for the trigger event at Level X e Filling Memories AT LAS500 detected a trigger event and it is sampling data e Reading Data Data acquisition 1s terminated and data are transferring to the PC Acquisition in Progres Ea X Filling Memories Note if the sampling frequency is extremely high these messages may appear only for few instants or they may even not appear When data acquisition terminates correctly the Acquisition in progress window will automatically close If the trigger event does not occur
39. nformation are visualized LA number progressive instrument number if more than one LA analyzer are connected Maximum Frequency maximum sampling frequency 250 or 500 MHz Memory Depth dimension of the available memory 512k 1M 2M or 4M Samples Firmware Version instrument firmware version RELEASE 2 0 FEBRUARY2006 13 AT LA500 USER MANUAL GETTING STARTED e Probe on Pod A type of the probe connected to Pod A e Probe on Pod B type of the probe connected to Pod B e Device Status instrument status a Settings 2 00 0 00 zM Samples Passive Probe Active Probe Within the same tab it is possible to set the threshold value for each bank if possibile for the connected probe RELEASE 2 0 FEBRUARY2006 14 AT LA500 USER MANUAL GETTING STARTED Guide to the first acquisition The procedure required to perform a data acquisition 1s here described step by step Probe connection e Connect a probe to Pod A e Connect channel 0 of the probe to a signal source of the system under test for instance a signal clock whose amplitude does not exceed the probe limit e Connect the probe round to the signal ground Software loading e Check whether the instrument is connected to the PC and that is switched ON Drivers must have been correctly installed e Launch AT LA software e Inthe Getting Starter window select Launch Wizard and click OK Using the Wizard to create a project e In the
40. obes for signal clocks In this case a correct setting of threshold values allows using the clock signal with the correct duty cycle Signal clocks furthermore must be 1f possible not affected by noise or disturbs that may activate erroneous acquisitions Depending on clock signal frequencies 1t could be necessary to invert the trigger setting on edge conditions to get a better acquisition e If data acquisition is performed in the Timing Analysis mode select the most suitable sampling frequency If the sampling frequency is too low acquired data may be not coherent while a too high frequency can evidence spikes or propagation delays furthermore reducing the useful acquisition time window RELEASE 2 0 FEBRUARY2006 39 AT LA500 USER MANUAL AT LA NAVIGATOR Data Visualization Three different window types are available to visualize the acquired data Waveform Window Data Window and DAC Window It is possible to open more than one window of the same type to visualize different data or even to visualize the same data in different ways Create a new Window In the Signal Navigator click on the New Waveform Data Window DAC Window key to open the Wizard New Window to be used to create a new data visualization window When a new window 1s created the user can select which signals or groups of signals among those acquired are to be visualized Anyway signals can be added in removed from the visualization win
41. ors Cursors are useful to identify and enlighten data that therefore may be recognized or found easier On the Data Window the user can move two default cursors called Cursor 1 and Cursor 2 and add markers called Mark that will be inserted on the menu ring Select Mark To add a marker press right mouse button to select the table row and select Add Mark Here in the popup menu Data Window already allocates a default cursor called Search Cursor that is moved automatically during a data search operation The user however can create remove as many cursors as needed RELEASE 2 0 FEBRUAR Y2006 51 AT LA500 USER MANUAL AT LA NAVIGATOR Using cursors to measure e Press the right mouse button to select the table row where you want to place the Cursor 1 select Move Cursor Here on the popup menu e Press the right mouse button to select the table row where you want to place the Cursor 2 select Move Cursor 2 Here on the popup menu e Indicator Delta Time s shows the difference between selected cursors Go To Selected Target Press the button Go to selected target to jump to a specific row of the table e On the menu ring J select the Trigger option e Press the button Go to ele e The Search Cursor will move to the Trigger event Search It is possible to search a value related to a bus or for a single signal a rising edge or a falling edge To activate the search option click on the Search Settings 22 key and the Prope
42. performed by AT LA500 by using an internal clock The sampling frequency can be selected by means of the Frequency Hz menu ring The maximum frequency value depends on the instrument version E Settings Normal Timing Analysis ha 2M Samples 500 00 A r Note for a correct acquisition the sampling frequency should be al least 3 or 4 times higher than the maximum frequency of the signals to be acquired RELEASE 2 0 FEBRUARY2006 26 AT LA500 USER MANUAL SETTINGS State Analysis When this sampling mode is selected data acquisition is triggered by a specific event If a clock signal is present in the system under test this sampling mode allows synchronizing the data acquired by AT LA500 E Settings State Analysis F r 2M Samples Ch 0 Bank 0 ha Ch 10 Bank 1 r AB LR A UL CRI In the External clock frequency control the clock frequency applied to the instrument can be entered This feature allows dimensioning correctly the time bars in the visualization windows Signal determining the clocks are divided in 4 groups of 4 signals one for each bank The division is the following Clock Channel 0 0 9 18 27 1 1 10 19 28 2 2 11 20 29 3 3 12 21 30 For each clock it is possible to select one channel among four available This feature allows using all the programmable thresholds with the maximum flexibility Note if no probes are connected to a Pod the corr
43. program The AT LA Navigator is constituted by several parts Menu bar E AT 4 Havicator m Ed rie edt window Hep GaP ans l aProjecti Command bar fl Signal Ch 0 LA 0 zia Waveform Windows SE Data bef Waveform Window 1 JiData cha Lag 264 Data Windows JiData S Ch71A0 mata Window 1 JiData Ch6 i1A0 JL Data 4 Ch SLA 0 JiData 3 Ch LAO0 IL Catal Ch 3 LA 0 JiData l Ch2 LAo JlData Chi lAO ri DAC Windows HL Settings 1 Acquisitions Workspace Signal Navigator e Menu bar it contains the principal functions for project management and AT LA500 configuration e Command bar it is a set of commonly used icons for projects and AT LA500 management e Workspace it is the workspace where all windows and the acquisitions related to the current project are listed e Signal Navigator it is an area reserved to the management of signals in the active window Waveform Window Data Window or DAC Window RELEASE 2 0 FEBRUARY2006 20 AT LA500 USER MANUAL SETTINGS Menu bar The following menu are available on the menu bar File New Project it allows creating a new project by specifying its name and its work directory Open Project it allows opening an already existing project Open Settings it allows loading settings already saved Open Acquisition it allows loading a data acquisition previously saved Save All it allows saving all settings all windows and the last
44. quisition Once the AT LA has been configured data acquisition becomes possible select Run in the Edit menu The Acquisition in progress window appears indicating the current status of the instrument When data acquisition is terminated this window is automatically closed If the windows remains open with the indication Waiting for Trigger at Level X or Filling memories it can be closed by clicking on the Stop key Check again probe connections and instrument settings Acquisition in Progres E Jn A Acquisition status Filling Memories Once data acquisition is terminated data are transferred to the software and they can be visualized Click on the Window menu and select New Window The Wizard New Window panel is loaded where the visualization type can be selected Select Waveform Window and click on the Next key Select Choose columns waveforms from Signal List in the control What data would you like to display in the new Waveform Data DAC Window and click on the Next key Select Signall from the left column then click on the gt gt key to add 1t to the list of signal to be visualized Click on the Finish key to open a Waveform Window The time behavior of the acquired signal 1s visualized Click on the graph area with the right mouse button and select Go To Trigger Event The window is then centered in correspondence of the trigger event occurring approximately at the 50 of the total available memory For a descr
45. rties window will be opened In the Search Definition tab the search criteria can be entered bad Properties The Start From menu ring allows to select the start location for searching Possible options are e Begin Search starts from the acquisition begin e End Search starts from the acquisition end e Search Cursor Search starts from the Search Cursor location e User selected cursor Search starts from the location of a cursor already created by the user e Sample Search starts from the Sample Number entered in the Position control RELEASE 2 0 FEBRUAR Y2006 52 AT LA500 USER MANUAL AT LA NAVIGATOR The Select Signal Group menu ring allows selecting among defined single signals or group of signals Only signals or groups of signals that have been visualized in the current window appear in the menu ring Depending on the signal type selected in the Select Signal Group menu ring the Browse by menu ring contains different options If a single signal has been selected the possible options are Rising edge or Falling edge If a group of signals has been selected the only possible option is Value and the pattern value must be entered in an hexadecimal base in the Value control The Value s base can be changed by clicking on the x control on the right hand side of the Value control To make active the selected criteria click the OK key and the Properties window will be closed In the visualization window click on
46. s with the acquisition end sample the Search Cursor is moved to a position selected by the user The Ple key must be pressed to activate this operation In the Sample option has been selected in the Go to selected target menu ring a pop up window will ask for the Sample Number The operations related to the Selected Cursor 1 and Selected Cursor 2 options can be performed nlr 4 nl directly by using the two keys and 1 respectively 1 In particular by clicking on the al key that 1s located on the left hand side of the Selected Cursor 1 menu ring the visualization area is immediately centered on the cursor selected in the Selected 2 Cursor 1 By clicking on the fi key that is located on the left hand side of the Selected Cursor 2 menu ring the visualization area is immediately centered on the cursor selected in the Selected Cursor 2 RELEASE 2 0 FEBRUARY2006 45 AT LA500 USER MANUAL AT LA NAVIGATOR Search It is possible to search a value related to a bus or for a single signal a rising edge or a falling edge To activate the search option click on the Search Settings 22 key and the Properties window will be opened In the Search Definition tab search criteria can be entered ta Properties The Start From menu ring allows selecting the start location for searching Possible options are e Begin Search starts from the acquisition begin e End Search starts from the acquisition end e Search Cursor Search st
47. sholds panel set a threshold value approximately equal to one half of the input signal amplitude then click on the Next key The Wizard reminds to set the trigger conditions before proceeding to the data acquisition Click on the Finish key to go back to the Signal Navigator In the Edit menu select the Settings panel and move to the Triggering tab On the trigger Level0 condition A click on the icon corresponding to Ch 0 and select a rising edge Click on the OK key to go back to the AT LA Navigator RELEASE 2 0 FEBRUARY2006 16 AT LA500 USER MANUAL GETTING STARTED Level 0 Condition A Action Trigger Pai St ni aoe et a A E V th rm MEE A el m d Ji mm EL As B ra ES x Ix Ge Bebe f oa E d d Edge AND Level Trigger when Equal PS gt er BOUM e In the Window menu select Inputs Status Window The Channel Status panel is opened providing in real time the input status Check that the icon showing signal activity is present in correspondence of the Ch O indicator otherwise check all physical connections The status of other inputs 1s meaningless Click on the Close key to go back to the AT LA Navigator e At this point the instrument is correctly set e From the File menu select Save Save All to save the project settings RELEASE 2 0 FEBRUARY2006 17 AT LA500 USER MANUAL GETTING STARTED Signal ac
48. ument to be removed in the AT device menu ring e Click on the Remove Device key e Disconnect the USB cable only when the status led of the selected instrument is switched off Note it is not possible to remove the Master AT LA500 i e the one whose status led is blinking Add an AT LA500 e Check that the AT LA500 to be added is already connected to the others via the AT Expansion cable e Connect the AT LAS500 to a USB porta or to a HUB then click on the OK key RELEASE 2 0 FEBRUARY2006 62 AT LA500 USER MANUAL AT LA NAVIGATOR Warning FIRST plug in the AT Device and THEN press OK e If the AT LA500 has been installed correctly the following message will appear e The new AT LAS500 will be inserted in the AT Device list RELEASE 2 0 FEBRUARY2006 63
49. with the right mouse key then select Remove e Save a Window Press the Save all button on the Workspace RELEASE 2 0 FEBRUARY2006 48 AT LA500 USER MANUAL AT LA NAVIGATOR Signal Navigator functions Signal Navigator is correlated to the Visualization Windows Any time the user switches from one window in the workspace tree to another one the Signal Navigator is updated and the selected window name appears as the signal column title AT L Navigator c X File Edit Window Help 2al 2 e fe rJ Waveform Window AC addr SE data Ji data z Ji data 1 Ji data n Sl clk Within the Signal Navigator 1t is possible to perform several operations For instance in the Waveform Window it is possible to open or close a bus to drag amp drop signals to move a signal in a bus to extract a signal from a bus to copy rename and remove waveforms to change colors To change a waveform property Right mouse click to select the waveform Select Properties On the General tab change the color radix or transition type Press OK Waveform Properties Gere al Search Definition Data ww Ch hisia Pod Hare LA Wavelanm Cale Traraitiem x ii T ES RELEASE 2 0 FEBRUAR Y2006 49 AT LA500 USER MANUAL Add a Signal or a Group of Signals AT LA NAVIGATOR To add a signal or a group of signal to a Waveform Window or to a Data Window click with the right mouse key on the Signal N
50. y using the AT Expansion bus e Connect all AT LASOO to the PC via the USB port or via a dedicate HUB e Check that AT LA500 are recognized correctly by the operating system ST RR dell hardware _ x A Selezionare la periferica da scollegare o da rimuovere e quindi fare clic su W Disattiva Attendere che venga visualizzato un messaggio di conferma prima di scollegare la periferica Periferiche hardware amp USB Logic Analyzer GE USB Logic Analyzer USB Logic Analyzer a Percorso 0 _ Visualizza componenti delle periferiche The connected AT LA500 constitute an AT Device System to open the control panel Plug in Manager of AT Devices click on the vo key in the AT LA Navigator RELEASE 2 0 FEBRUAR Y2006 60 AT LA500 USER MANUAL AT LA NAVIGATOR Plug In Manager In the AT System tab is shown the AT instruments rack while the AT Device tab contains a list of the characteristics of the connected instruments In this tab it is possible to add or remove other instruments by clicking on the Add Device and Remove Device keys respectively RELEASE 2 0 FEBRUARY2006 61 AT LA500 USER MANUAL AT LA NAVIGATOR Plug In Manager AT System AT Device AT Device ENTCENN LA O 36 500 MHz 100 MHz 2M Samples Passive Probe Passive Probe AT Logic Analyzer 1 6 11000004 Device OK Add Device Remove Device Remove an AT LA500 e Select the instr
Download Pdf Manuals
Related Search