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M631 Arbitrary Waveform Generator

1. Connection cable for a link between the device and the PC plate with mounted printer connector and cable for connection with the device The procedure of connecting the device with the PC and creating a new printer connector is as follows Incase a printer is attached to the computer disconnect it Remove any of the I O slot binders preferably the one nearest to the connector you intend to use for connecting with the printer Place the flat cable intended for connecting the device to Connection to computer New parallel port the PC through the created T DRE opening so that the conne k ctor to be attached to the PC s parallel port is on the outer side Mount the plate with the printer connector into the free position so that the flat cable for connection with the PC folded in half is in the ex cision Fig 2 2 2 1 Page 17 cS cS M631 Arbitrary Waveform Generator User s Guide The outer connector of this cable should be connected to the printer port of the PC and any of the connectors on the other end to the device s con nector labeled EPP Plug the cable of the new printer connector to the device s connector la beled PRINTER The printer can now be attached to the newly created connector The view on the installation from the rear side of an ATX PC is illustrated on Figure 2 2 2 1 WARNING Some computer cases have sharp edges in the opening for T O modules Be sure that the flat cabl
2. Percent rate of the segment between the horizontal cursors to the part between the maximum and minimum of the wave 4 Voltage between the red cursor and the zero mark This is not acces sible when the screen is not in the real mode 5 Percent rate of the time between the vertical cursors to one period of the waveform 6 Number of generated points between the vertical cursors 7 I time delimited by the vertical cursors 8 Time delimited by the vertical cursors 4 15 Waveform modification tools Click on the button Reset defaults to fill the first four waveforms with standard waves si nus saw triangle and rectangle Delete selected wave to erase the selected waveform the first waveform is selected instead Math edit to run the mathematical editor see 4 16 Page 46 User s Guide M631 Arbitrary Waveform Generator Hand edit to run the manual editor see 4 17 Harmonics edit to run editing by adding the multiplication rate and level of harmonic frequ encies of which the waveform is composed see 4 18 Amplitude modulation to run the editor for modulation of a base frequency by a chosen sig nal see 4 19 4 16 Mathematical editor The mathematical editor is invoked by clicking on the Math edit button in the waveform gallery Using the mathematical editor you can ex press the shape of a waveform as a mathematical function The following functions are implemented
3. s Guide The TI SO connector can also serve as a source of a trigger sig nal for cooperating measuring devices In this mode the control unit ge nerates a trigger signal which is synchronized with the period of the out put waveform Page 12 User s Guide M631 Arbitrary Waveform Generator 2 Installation This chapter contains all information necessary for hardware and software installation 2 1 Computer requirements The minimum computer requirements are as follows PC486 compatible computer 8MB RAM CD ROM 800x600 minimum display resolution EPP V1 9 or EPP ECP Mouse or other pointing device 2MB of free hard disk space MS Windows 95 MS Windows 98 MS Windows NT or MS Windows 2000 The recommended computer requirements the above mentioned plus PENTIUM 200MHz 16MB RAM 16 bit color depth at 800x600 resolution eo i S F248 ADDRESS PU Page 13 ery M631 Arbitrary Waveform Generator User s Guide 2 2 Hardware installation Your generator is one of the following modifications M631 I internal modification which can be mounted directly to the computer to any of the free 5 floppy disk drive positions M631 E external modification which requires no installation only the attachment of the connection cable and supply adapter Prior to installation of the generator hardware make sure that the parallel port of your computer is set to the EPP mode enhanced paralle
4. button Both buttons are placed beside the Vp button If the Vpp indicator is switched on a value can be entered into its field TIP The specified value is in volts If however the letter m follows the numeric value the program considers the value to be in millivolts and automatically converts the value to volts TIP If the entered value is out of the generator s range the program automatically changes the output attenuator If the value remains out of the parameters even after the change the program adjusts the va lue to be the nearest possible to the one desired Page 37 ex ext A Le 172 A Le ery M631 Arbitrary Waveform Generator User s Guide The value shown by the indicator in the middle of the panel can be changed These units can be chosen from a combo box dBX dBW dBmW power at the given load evaluated using Vrms load dBmV dBuV voltage evaluated using Vrms f dEmv gt 69 TIP The value is computed from the Vrms therefore the shift on the given Channel can influence the resulting value If you want the pro gram to compute the Vrms together with the dBX only from the alter nating component of the wave turn the option on in MenulSettings Vrms from AC WARNING If you specify an incorrect load see 4 3 values of all in dicators may be different from the true values 41 2 Switching of the Channel output The Channel output can be adjusted by clic king on t
5. ee Bi iii OEM b ig and right therefore only mispsi ss ie 1 ik DS ag i a K Fiaa k shiga a y u 1 Site Me Fg one part is explained in i Ete LE the following text IO Die miv ee cS SaD ery M631 Arbitrary Waveform Generator User s Guide If the waveform was created using other editors than the harmonic components editor eventually the amplitude modulation editor only the text No data available for Channel is displayed If the waveform was created using the harmonic components editor information about the first harmonic is displayed in the first line and about the next selected harmonic frequencies in the following lines see 4 18 Each line holds the data in the following order the number of the harmonic frequency of the harmonic and phase shift of the harmonic in degrees If a too high generation frequency is specified and the given har monic is therefore not generated its line is highlighted with a red color If the waveform was created using the amplitude modulation editor information about the level of the original signal Level of original wave and about the signal s carrier frequency Carrier frequency is displayed The module can be put into the clipboard see 4 6 3 2 7 Communication settings After choosing the menu item Settingslcommunication this win dow is opened address should be chosen Port address 378h t from the Port address Base address Address 13 M631 combo box
6. 3 Continuous waveforms screen 26 3 2 4 Digital waveforms screen 28 3 2 3 Main Men 5282855088 2 wa wha ee eta 30 3 2 6 Editor data VIEW sue nou dans Eee oa eee EERO 31 3 2 7 Communication settings 32 3 2 8 New versions window 33 3 2 9 Internet connection settings 33 4 Analogs Mode 524 er See es Caw net ein be Reve 35 4 1 Channel level control 36 4 1 1 Channel level settings indicators 37 4 1 2 Switching of the Channel output 38 4 1 3 Influencing the level by external voltage 38 4 2 Channel shift control 39 4 2 1 Channel shift indicators 39 4 3 Channel load control 39 M631 Arbitrary Waveform Generator User s Guide 4 4 Filter control 40 4 5 Frequency control 40 4 6 Module clipboard 41 4 7 Channel B phase control 41 4 8 Information from vertical and horizontal cursors onthe Sereen eni o e eee E Sea Eee er 42 4 9 Waveform screens 43 4 10 Selection or creation of waveform for a given Channel 43 4 11 Waveform gallery 44 4 12 Scr
7. GX M631 Arbitrary Waveform Generator User s Guide An exact load value can also be specified in the field on the right from the 50 button 4 4 Filter control The filter mode is chosen from a combo box Filter Low engages the low pass filter with 5MHz limit fre Fe quency High engages the low pass filter with 20MHZ limit frequency Off no filter is used WARNING When switching the filter incorrectly the amplitude can actually be lowered TIP The main function of a filter is smoothening of the resulting sig nal The program offers the Auto filter option see 3 2 5 When the option is turned on the program is switching the filter so that neither an amplitude depression nor signal distortion occurs 4 5 Frequency control WARNING In the analog mode the term frequency stands for the ba se frequency of the generated wave The Channel A frequency is adjusted in a standard way see 3 2 1 The Channel B frequency can be set as being a multiple of the Channel A frequency from the same to multiplied by 99 A click on the lt button 1 decreases the multiplication rate it is increased by clicking on the gt button 2 If you hold the left mouse button down the multipli cation rate starts increasing decreasing after 0 5 seconds Another possibility is to enter an exact o y a Pi multiplication rate as a number into the field 3 A multiplied frequency can be adjusted only if the Channel
8. VRms from AC If this option is on the VRms is being evaluated only from the alternating part of the waveform hence it is not dependent on the shift in the belonging Channel SettingslAuto filter If this option is checked the program adjusts the fil ter in the analog mode automatically to a level where no loss of the wave form s harmonics on the output occurs WARNING The option Auto filter works with any waveform re gardless of the editor used for its creation because the highest har monic of the signal is determined using the Fourier transformation Settings Communication Opens a setup window where generator com munication parameters base address parallel port address can be specifi ed see 3 2 7 ProfileslOpen profile Opens a selected profile generator settings ProfilesiSave profile Saves a selected profile generator settings WARNING The profile contains all settings along with communica tion internet settings UpdateslCheck for updates The program connects to the ETC in ternet server using the current internet settings see below and checks whether new program versions are available see 3 2 8 Updates Internet settings A window in which the proxy server u sed when downloading newer program versions can be specified is opened see 3 2 9 3 2 6 Editor data view This module offers two identical pieces of information about the A and the B Channel left a
9. bus Click on the text Inverse to switch the inversion on off Use the Remove value button to cancel the link between a given point of a selec ted signal to the variable By entering a hexadecimal value in the Test value field you can specify a test value of the variable This value has no influence on the use of the macro in the digital waveform The variable description can be writ ten in the Value desc indicator This field serves only as an aid for the u ser and has no influence on the use of the macro in the digital wave By clicking on the Ok button you close this window and the mac ro is added to the list By clicking on the Cancel button you close the window but the macro is not added 5 4 4 Configuration of macro elements When adding CPE dyja arrc an element to a macro you must specify its _ Afiam name in the Net na amp Sege be me field The element minama type is selected by Bush p f clicking on the text Upin bi Bus bus Single Dee signal If the element sr tma is a bus you must en ter the highest bus bit that is the bus size decreased by one in the right fi eld labeled Bus length When clicking on the Add to nets button the element is added to the list The elements are displayed on the screen in the order in which they appear in the list You can move a selected element in the list upwards by clicking on the Up in list button and downwards by clicking on the Down
10. consi dered to be a signal period when the Ok button is pressed Click on the Glue cursors button to switch on off the welding of the reference cursors When the reference cursors are welded moving one of them causes the other to move as well so that their distance remains un changed This option is switched on automatically when the program has found a period Still it can be switched off by clicking on the button Page 68 User s Guide M631 Arbitrary Waveform Generator WARNING Because the period length on both Channels must be equal the reference cursors of the Channel A screen and Channel B screen are related When the Ok button is pressed the sections selected on the Channel A and Channel B are written into the device and the window is closed Click on the Cancel button to keep the waves unchanged for both Channels Page 69 ery M631 Arbitrary Waveform Generator User s Guide 7 Technical specifications 7 1 M631 Number of Channels DA converter resolution Output attenuator settable to 0 or 20dB independently for each Channel Max output voltage Range of output voltage setting 8V to 8V 16Vpp attenuator set to 0dB 800mV to 800mV 1 6Vpp attenuator set to 20dB 800mVpp to 16Vpp attenuator set to 0 dB 80mVpp to 1 6Vpp attenuator set to 20dB Recomended range of output voltage setting 1 6Vpp to 16Vpp attenuator set to 0 dB 160mVp
11. from both Channels 68 6 6 Setting up period of imported wave 68 7 Technical specifications 70 Al MOSS Baa tached ON anaes 70 T2SEBAOBM od cst srte et oder co ol See na BERT oe ge ae 71 Index Es aa DR ERA AR EE at ies 72 Page 4 User s Guide M631 Arbitrary Waveform Generator The ETC company thanks you for the purchase of the M631 arbitrary wa veform generator We believe that the M631 meet your expectations To keep you informed we kindly request that you fill out and mail the regist ration card you have received in the package or the registration form that you can find on our company website If you need further information or consultation contact us at the following address or preferably via e mail Address ETC s r o Rosinska cesta 8 P O Box 97 010 08 Zilina Slovak Republic Phone 421 41 5667894 marketing information and HW 041 5667894 Fax 421 41 5667894 041 5667894 Internet URL _ http www etcsk com or http www etc sk e mail support etcsk com technical support sales etcsk com marketing information info etcsk com other information Page 5 M631 Arbitrary Waveform Generator User s Guide Package contents Depending on the purchased hardware version your package contains the following components M631 I EM631 I internal module 1 pc Cable EA600 for connecting the module to an AT computer Ipc Cable E
12. in list button Click on the Remove from list button to delete a selected element from the list An element is selected by clicking on it in the list Page 64 User s Guide M631 Arbitrary Waveform Generator A click on the Ok button adjusts the elements in the macro and the window is closed A click on the Cancel button closes the window but the elements are not included in the macro Page 65 cS M631 Arbitrary Waveform Generator User s Guide 6 Import of continuous waves from the M621 oscilloscope mode The import from the M621 mode is used for generation of conti nuous waves that were previously measured and stored using the M621 os cilloscope from the ETC company Also the level and frequency of signals are adjusted when importing from theM621 The main screen is similar to the analog mode screen WARNING After importing a signal from the M621 control elements are locked in this mode see 6 4 obr 6 1 Fig 6 1 The import from the M621 mode screen A brief description of the screen elements Channel B load controls see 4 3 14 The waveform screens see 6 3 Channel B filter controls see 4 4 15 Level settings lock see 6 4 1 Main menu see 3 2 5 10 Frequency controls see 6 1 2 Channel A level controls see 4 1 11 Trigger controls see 3 2 2 3 Channel A shift controls see 4 2 12 Import of waveforms from both 4 Channel A load controls see 4 3 Channels see 6 5 5 C
13. it was drawn Before a tool is switched off it is possible to reverse all changes performed using the tool by clicking on the Undo tool button TIP Sometimes the wave is zoomed in and you wish to connect two po ints that are not displayed together on the screen In such case you can use the right mouse button for moving the waveform while holding the left button down after the first point has been specified Page 52 User s Guide M631 Arbitrary Waveform Generator By clicking on the OK button you close the manual editing tool and the changes in the waveform are stored By clicking on the Cancel button you close the manual editor wit hout storing the changes 4 18 Harmonic components editor The harmonic com ponents editor is switched on by clicking on the Harmonics edit button in the waveform gallery This editor serves for the synthe sis of a wave from harmonic signals with a given frequen m cy and level A screen of the resul ting wave is displayed in the upper part of the window This screen is standard see 3 2 3 without cursors without the zero mark and with the zooming ability The first harmonic will always be a part of the resulting wave Further harmonics can be specified in two ways However their frequency is always expressed as a multiple of the base frequency The program can store up to 256 harmonics of which the resulting signal is composed After entering a value into the Frequenc
14. new net button is pressed the element is not added and you can start adding a new element The elements in the Nets list will be displayed in the digital wave screen in the same order in which they appear in the list When you select an element from this list by clicking on it in the list it is possible to mo ve this element upwards by clicking on the Up in list button or down wards by clicking on the Down in list button in the list Click on the Remove from list button to remove the element from the list The element configuration is confirmed by clicking on the Ok button and the window is closed Pressing the Cancel button keeps the original configuration and the window is closed TIP All values attached to the element points are bound to pins not to the element name Therefore it is possible to reconfigure stagger one bus to two for example 5 4 2 Addition of a macro After adding a macro into the Running macros list a window is opened in which the mm information about the use of the macro should pr gt be specified The name of the used macro is i displayed in the Macro name field You can set the number of macro repetitions cycles in the Count indicator All macro elements are displayed in the list 1 and all elements of the waveform in the list 2 All macro elements ne ed to be attached to selected wave elements Drag an element from the list 1 onto an element a A in the list 2 to a
15. on the original disk copy ies and all subsequent copies of the software regardless of the form or media in or on which the original and other copies may exist This License is not a sale of the original SOFTWARE or any copy Page 7 M631 Arbitrary Waveform Generator User s Guide 3 COPY RESTRICTIONS This SOFTWARE EM631 device and accom panying written materials are copyrighted Unauthorized copying or co py attempt of the EM631 device including card which has been modifi ed or included with any other system or of written materials is express ly forbidden It is however allowed to pass SOFTWARE on as the DE MO version You may be held legally responsible for any copyright in fringement which is caused or encouraged by your failure to abide by the terms of this License 4 DISCLAIMER OF THE WARRANTY OF ANY KIND CONCER NING SOFTWARE This SOFTWARE and accompanying written ma terials are provided AS IS without a warranty of any kind Further ETC Ltd does not warrant guarantee or make any representations re garding the use or the results of use of the SOFTWARE EM631 devi ce or written materials in terms of correctness accuracy reliability cur rentness or otherwise The entire risk as to the results and performance of the software is assumed by you TRADEMARKS MS DOS Microsoft Windows Microsoft Windows 95 Microsoft Windows 98 Microsoft Windows NT Microsoft Windows 2000 Microsoft Windows XP MS Office MS Exce
16. range 5V to 8V Input impedance of synchro 47kOhm 5 Amplitude of output synchro voltage gt 3V no load Output impedance of synchro output cca 250 Ohm External amplitude control AM activated independently for each Sensitivity of external amplitude control Channel 1 V V attenuator set to 0 dB Accuracy of the external amplitude control sensitivity 0 1 V V attenuator set to 20dB lt 1 External amplitude control bandwidth 0 Hz to 100 Hz For frequency of 25 MHz the waveform is built from two points only 7 2 EA631 Number of Channels 16 Output voltage modes settable 5V logic family or 3 3V logic family Output voltage for log 0 lt 0 4V 4mA Output voltage for log 1 gt 2 4V 4mA in 3 3V mode gt 3 8V 4mA in 5V mode Page 71 M631 Arbitrary Waveform Generator Index A Address on the bus 14 0 15 17 32 jumpers 15 ATX computer 17 A631 1 20 A631 E 20 autorun 21 analog mode 35 C computer requirements 13 control elements 22 control panel 22 cursors 27 carrier frequency 32 clipboard 41 D Digital adapter 20 mode 30 57 downloading 31 33 dB 36 37 38 E EPP 14 18 32 EPP ECP 14 32 EA 604 2 19 EA 604 4 19 EA 631 14 20 export 45 Page 72 User s Guide User s Guide F frequency control 23 35 40 57 66 67 filter 31 40 G gal ria priebehov 41 H hand edit
17. rate of added harmo nics will be increasing by 1 when clicking on the 2 text it will be inc reasing by 2 Click on the Add to list button placed beside the 1 text to start adding the harmonics to the list A window for configuring the har monic s level shows up for each harmonic If you are adding several har monics the Harm count is bigger than 1 the Finish and Abort but tons gain a different meaning than it is described above Click on the Finish button anytime to use suggested values for further harmonics in stead of specifying them in the level window By clicking on the Abort button no harmonics including the current are added to the list The suggested values depend on whether the level is expressed mat hematically or not If the level is not expressed mathematically the sug gested level receives the value entered in the indicator in the last instance of the level window If the level is expressed mathematically the sugges ted level receives a value computed using the mathematical formula The suggested value of the phase does not depend on whether the level is ex pressed mathematically or not it always receives the value written in the indicator in the last instance of the level window The suggested value can hence be computed from a given formula This option is switched on off by clicking the Math level text The units in which the result of the mathematical formula is expressed can be chosen from
18. the combo box beside the Level indicator A mathematical expressi on which indicates the level of the n th harmonic in given units should be entered into the Level field All operations and constants described at the beginning of the Chapter 4 16 may be used when building the expression You can also use the variable n which gains for a given harmonic a value equal to the harmonic s index n 2 for the 2nd harmonic etc Page 54 User s Guide M631 Arbitrary Waveform Generator When all harmonics are added to the list the resulting waveform is displayed on the screen Click on the Clear list button to remove all harmonics from the list By clicking on the Remove button all selected harmonics are re moved from the list A harmonic is selected by clicking on it in the list You can select further harmonics by holding the Ctrl key while clicking on them in the list The selected harmonics are marked with a blue stripe A harmonic s level window with suggested values equal to the har monic s values is displayed for all selected harmonics after the Edit but ton has been clicked After successfully specifying new values only the se lected harmonic is modified no new harmonic is added to the list The selected harmonics can be added to a list of harmonics that are to be displayed in the Editor data view module by clicking on the Mark button Such harmonics are indicated by the asterisk mark Click on the
19. the maximum frequency In the opposite case the cursor frequency is assigned to be the maximum displayed frequency and the minimum frequency is again evaluated to keep the rider in the middle between the minimum and the maximum frequency 2 If the minimum or the maximum frequency is out of range they are as signed values from the range nearest to those desired When you click onto the field the special linear view is initialized with the specified minimum and maximum frequency When in one of the remaining view modes it is also possible to ad just the minimum and maximum displayed frequency There are so called zoom marks in the frequency field These are the white and blue vertical lines Values of the blue colored marks are used as the minimum and the maximum frequency after clicking on the Zoom in button You can turn a white mark to the blue by clicking on it The Zoom out button moves the minimum frequency one mark to the left and the maximum one mark to the right The minimum and the maximum frequency can be shifted by drag ging the frequency field if neither the rider nor any of the zoom marks ha ve been clicked By moving it to the left you can increase the minimum frequency and vice versa If the logarithmic view is on the maximum fre quency is adjusted so that the ratio between the minimum and the maxi mum frequency is not altered otherwise it is adjusted so that their diffe rence is kept the same When you move
20. the smallest possible step Clicking between the rider and the arrow changes a value in larger steps Choosing a value from a combo box indicator A list of all values that can be set in the indicator is opened when you click on the combo box The desired value is chosen by clicking on the desired element in the list This chapter describes the basic control elements that is all ele ments used with small differences identically in all modes 3 2 1 Frequency control A frequency can be adjusted by dragging the rider to a desi red value Fra Page 23 OT M631 Arbitrary Waveform Generator User s Guide Clicking on the left right red arrow moves the rider one point to the left right However if you hold the left mouse button the rider starts moving 20 points per second in the given direction after 0 5 seconds A scrollbar can be used for fine tuning the frequency Moving it right increases the frequency left decreases it The frequency can be precisely specified also by entering a value into the left indicator TIP The frequency is being entered in Hz units If however the letter M follows the numeric value the value is considered to be in MHz If the letter k follows the numeric value it is considered to be a kHz value The right indicator displays the actual value set in the device WARNING The value set in the device cannot match the value in the program The value in the device depends on the smalle
21. time points The letter D is displayed before the ac tual value The waveform can be enlarged by clicking on the Zoom in button while the opposite action is performed by the Zoom out button TIP More time values are displayed after zooming in the waveform You can move the first and the last displayed point of the elements after grabbing the right side of the screen with the mouse while no cursor is clicked Moving the screen left displays the rear part of the elements Page 29 OT ery M631 Arbitrary Waveform Generator User s Guide wave moving it right displays the front part The starting point can also be shifted by moving the scrollbar placed under the screen Its right part re presents the waveform segments nearer to the end and vice versa One main yellow and one supplementary cursor green can be u sed Either of them is moved to a new position simply by dragging it with the mouse The term a segment of the waveform indicated with a cursor refers to the first waveform point behind the cursor A point indicated with the yellow cursor is highlighted yellow in the element waveform A value of an element in the point indicated with the main cursor is displayed on the left between the element s name and the element wave form itself A yellow colored number in the lower part of the screen on the right from the main cursor is the point count between the beginning of the wave and the cursor The time be
22. version If you wish to download another version select it in the table After clicking on the Download button the download of the se lected version starts The downloaded file is placed to the Updates sub directory of the directory where the program is installed When the down load procedure has been successfully finished the program asks whether you wish to install the downloaded version immediately If you choose yes the program terminates and its actualization by the currently down loaded version is performed 3 2 9 Internet connection settings When clicking on the menu item pes UpdateslInternet settings this window is ope F Lips prosp sers ned Ping addat eryr Click on the Use proxy server text to ea rs switch on off the use of proxy server for the download of updated versions If this option is checked the whole address of the proxy server should be specified in the Proxy address field and the proxy server port usually 3128 in the Proxy port field If these settings are correctly spe Page 33 M631 Arbitrary Waveform Generator User s Guide cified in the Internet Explorer it is possible to reach them by clicking on the Get settings from IE button Using this option the proxy server is switched on off and the port number is configured After clicking on the Ok button these settings are used when working with the internet in the program and the window closes When clicking on the Cancel b
23. 4 1 A change of a value is indicated by a connection of the horizontal lines If there is space for writing a bus va lue between two consecuti ve changes it is put out in the hexadecimal form Fig 3 2 4 1 If the element is of the signal type the logical one is expressed by a line near to the upper edge and the logical zero by a line at the lower ed ge A change of the value is expressed by a line connecting the logical op posites There are several arrows in the upper and lower left corner of the screen When an arrow is red it means that the number of used elements is higher than it is possible to display on the screen You can choose which elements are to be displayed by clicking on the arrows Selecting an element means clicking on it so that none of the cur sors is clicked on the screen The selected element has red color The time values corresponding to a selected element are displayed in the upper part of the screen The absolute time expresses the time elap sed between the beginning of the wave generation and the generation of the given point It is displayed as text below which is a vertical line pointing to the given point The absolute time is displayed in all points where the ele ment changes its value if there is enough space for putting out a value The relative time is displayed always between two absolute time la bels if there is place and expresses the time difference between the two surrounding absolute
24. 47 51 harmonics edit 47 harmonics components 53 54 I internet 33 import 45 66 68 L Lin 24 Log 24 Level 36 37 Load 39 58 M M631 1 17 19 MO631 E 18 19 Main menu 30 Math edit 46 47 modulation 47 55 macro 58 60 61 62 63 64 M621 66 68 M631 Arbitrary Waveform Generator Page 73 M631 Arbitrary Waveform Generator User s Guide P Package contentsphase 6 PRO 6 phase 41 R Recommendations for use 8 S Software 7 license 7 DEMO 8 synchronization 26 shift 39 save 58 T Trigger 25 26 35 57 66 Technical specifications 70 V Vpp 36 Vp 37 Vrms 37 Vavg 37 W warranty 7 waveform 26 27 28 30 35 43 44 45 46 58 61 67 68 Z zoom 25 27 28 29 Page 74
25. A601 for extending the connection to the printer Ipc Cable EA602 for connecting with an ATX computer s parallel port Ipc Cover of the extending position with a connector and a cable for conne cting the printer to the ATX computer Ipc Screws M3 4pcs User s Guide Ipc CD ROM containing the software M631 E EM63 E external module Ipc Standard 25 pin parallel port cable 1pc Power adapter 14V 0 8A Ipc User s Guide Ipc CD ROM containing the software If you have ordered the PRO modification of either version the co de for accessing the libraries and examples Development kit on the CD ROM is included in the package If you have also ordered the EA631 I Digital Adapter the package contains EA626 connector adaptor Ipc EA631 digital buffer Ipc EA327 8 adapter with clips 2pcs If you have ordered the EA631 E the package contains EA631 digital buffer Ipc EA327 8 adapter with clips 2pcs Page 6 User s Guide M631 Arbitrary Waveform Generator Warranty conditions The ETC s r o company guarantees reliable operation of the M631 generator in compliance with this documentation during a period of 6 months from the date of purchase For customers who fill out and mail the registration card supplied with the device to our address within 30 days from the date of purchase the warranty is extended to one year Should a malfunction o
26. B indicator field the program sets the Vpp so that the rate entered by the user is the ratio between the Vpp and the Vc TIP If the entered value is out of the generator s range the program automatically changes the output attenuator If the value remains out of the boundary parameters even after the change the program ad justs the value to be the nearest to the desired value Page 36 User s Guide M631 Arbitrary Waveform Generator WARNING If the text Lvl above the scrollbar turns red it means that the configured voltage is too low and the manufacturer does not guarantee its accuracy 4 1 1 Channel level settings indicators The M631 program offers this information concerning the actual le vel of a given Channel Vpp peak peak voltage Vp amplitude eventually the maximum minimum voltage Vrms effective voltage Vavg mean voltage value dBW dBmW dBmV dBuV performance at a given load dBW dBmW eventually voltage dBmV dBuV Vep E4V ol 42V Yims 2 97 Vavg WARNING The Vp depends on the shift setting of the belonging Channel In case that the option Vrms from AC see 3 2 5 is not switched on the Vrms and Vavg indicators depend on the shift as well The Vpp depends on the level setting only Each of these indicators can be switched on off by clicking on the corresponding button The Vp indicator can be set to be showing the ma ximum or minimum by clicking on the or
27. B fre quency does not exceed 25 MHz Likewise the frequency of the Channel A is adjusted only when the Channel B frequency does not exceed 25 MHz Frequencies of the Channel A which are not available for use be cause of the previously mentioned reason are displayed hatched with blue lines see Figure 4 5 1 Page 40 User s Guide M631 Arbitrary Waveform Generator me Fig 4 5 1 WARNING The Channel B frequency the multiple is adjusted in the device after 1 second from setting it up in the program The text in the indication field has gray color until the desired multiple has been set in the device After an adjustment in the device the text turns red or blue WARNING When using a multiplication rate that is not a power of 2 the producer does not guarantee the stability of the Channel B frequ ency In this case an exclamation mark is displayed next to the Channel B frequency and the text is displayed in a red color The frequency instability occurs particularly at higher Channel A frequ encies 4 6 Module clipboard The module clipboard is a place where you can deposit any M631 program module A module is switched on in the menu under MenulModules see 3 2 5 The module is always opened in a separate window A black rectangle appears around the clipboard when dragging a module over it in case that no module is in the clipboard After relea sing the mouse button the module window is moved into the clipboard The
28. ETC M631 ARBITRARY WAVEFORM GENERATOR USER S GUIDE Copyright 2002 ETC s r 0 User s Guide M631 Arbitrary Waveform Generator Contents Package Contents 23 stew vee os Sees ee Ges Eee ene ee He etes Y 6 Warranty conditions 7 Software license agreement 7 TRADEMARKS 5288 ut fat Dale dae oh ei PAUSE da ee dal eee Ns 8 Recommendations for the generator use 8 Who is this book addressed to 9 1 Technical features of the generator 10 2 Installation 2 ads a awa ey ea ds 13 2 1 Computer requirements 13 2 2 Hardware installation 14 2 2 1 M631 I hardware installation into an AT computer 14 2 2 2 M631 I hardware installation into an ATX computer 17 2 2 3 M631 E hardware installation 18 2 2 4 Connecting several EMLII system devices to the computer 19 2 2 5 Digital adapter installation 20 2 3 Software installation 21 3 Basic control elements of the generator 22 3 1 Connection points layout 22 3 2 Description of basic software control elements 22 3 2 1 Frequency control 23 3 2 2 Trigger mode control 25 3 2
29. Editor data view is a module at disposal in the program see 3 2 6 4 7 Channel B phase control The phase setup is activated by clicking on the Set ph Set phase button Information about the time shift bet a ilies ween the Channels is presented in the upper left corner fo Gat of the Channel B screen When dragging the Channel B screen so that none of the cursors has been clicked moving it left shifts the phase towards positive values and vice versa The phase is increased by clicking on the left blue arrow Page 41 ext 9 cS M631 Arbitrary Waveform Generator User s Guide and it is decreased by clicking on the blue arrow on the right If you don t release the mouse button the phase begins to increase decrease after 0 5 seconds When the phase value is configured in the program it has not be en used in the device yet You can do so by clicking on the Set button or by finishing the phase setup with a click on the Set phase button TIP The phase indicator field is red until the chosen phase has been set in the device TIP The Channel B waveform is also displayed in the Channel A sc reen after activating the phase setup The phase can also be modified by entering an exact phase value in degrees into the phase indicator field located below the Set phase button WARNING The program allows adjustment of the phase only by a step that can be set in the device This step depends on the frequen
30. This address is stated in the computer Cancel BIOS and is necessary for correct communication between the software and the device The module s base address can be chosen from the Base address combo box If the program has already de tected a device it is signalized in brackets next to the belonging address in the combo box e g Address 0 M631 After a click on the Ok button the specified settings are used af ter restarting the program and the window closes When clicking on the Cancel button the specified settings are not used and the window closes WARNING If the parallel port of your computer is not working in the EPP or EPP ECP mode the program reports a communication error on the startup The parallel port settings can be changed in the com puter s BIOS Page 32 User s Guide M631 Arbitrary Waveform Generator 3 2 8 New versions window A window for EE S S Ciel ere 1 managing new versi ons is opened by cho osing the menu item Updates Download update The version number of the software is displayed in the upper left corner of the window A list of all available versions is shown in the table Details of each version are given in the following order Whether the version is newer New older Old or the same Same as the version installed at the moment URL address where the version can be obtained Version number File name The program automatically highlights the newest
31. Unmark button to release selected harmonics from the list WARNING Up to six harmonics can be selected The first harmonic is always presented in the Editor data view module A click on the Ok button ends the harmonic components editor and wave modifications are stored A click on the Cancel button ends the harmonic components edi tor without storing the changes TIP If a wave created or modified using the harmonic components e _ ditor has not been consequently modified in another editor after reo pening it in the harmonics editor the harmonics are automatically fil led in the list WARNING If another editor is used for modifying a waveform the harmonics are not presented in the Editor data view 4 19 Amplitude modulation editor The amplitude modulation editor is switched on by clicking on the Amplitude modulation button in the waveform gallery This editor ena bles you to create a waveform that is basically a harmonic wave of a given frequency modulated by a chosen wave Page 55 N G ery M631 Arbitrary Waveform Generator User s Guide COTE CAEN ES CET 7 1 ph ut 4 yay pet Came te quencs Fr EN The Min anp ida E 4 The screen of the edited waveform is in the upper part of the win dow It is a standard screen see 3 2 3 without cursors the zero mark and without the zooming ability A number expressing the percentage of the whole range below which the modulated signa
32. and BLC and by the input signals of the external set ting of the ELA ELB output signal level which are connectable through the LAA and LAB buffers and the ESA and ESB switches The generated waveform can be superponed to the DC voltage The intensity of this su perponed voltage is determined by the DA converters outputs ASC and BSC which are connected to the second input of the AMA eventually AMB output amplifier It is possible to use the M631 generator to generate digital events as well For this purpose the outputs from the waveform memory are atta ched through the DB digital buffer to the DK connector where the digital buffer module EA631 is connected The output level of the digital signals can be chosen with the SPS switch to be either 3 3V or 5V supply voltage The output waveforms and digital events can be generated in seve ral modes Periodic When the signals or digital events are generated periodically with a given period Synchronized The periodic signal is generated from the beginning al ways after an active part of the synchronization impulse Single The signal is generated only once after the activation by the user Externally triggered The signal is generated once every time the trigger pulse appears An active part of a trigger pulse can be its leading or trailing edge The trigger pulse is being fed through the TI SO connector to the input of the control unit Page 11 M631 Arbitrary Waveform Generator User
33. and can be used when building expressions a Meaning of the syntax addition adds 2 to number x remainder subtracts 2 from the number x multiplication multiplies the number x by 2 division divides the number x by 2 absolute value absolute value of the number x sine i sine of the number x cosine cosine of the number x square number x to the power of 2 percentage rounded numeric expression of x of 16383 percent of 16383 When entering expressions brackets can be used in the conventio nal mathematical mode For example 2 x x 2 for x 3 results in 5 Also the constant pi 2 arc cos 0 is defined The formula sin pi 2 is correct and its result is 1 There is a screen in the upper part of the window that contains the created eventually changed waveform This screen is standard see 3 2 3 without cursors without the zero mark and with the zooming ability The mathematical editor offers the possibility to include two in dependent constants y z within an expression The use of these constants Page 47 M631 Arbitrary Waveform Generator User s Guide 2 is switched on off by clicking on the belonging letter placed below the text Constants An indicator field with the current value of the constant is displayed on the right from the letter The value can be changed by entering a new value or an expression into the field constants y z may also be entered in the constant
34. button Step Ins steps or Del steps Page 59 M631 Arbitrary Waveform Generator User s Guide TIP Time values such as 22 ms can be entered also in the fields The number of points will be computed from this value depending on the configured frequency When clicking the Finish macro queue button the One step o peration is performed until the Running macros list is empty see below The macros are an important tool when creating a digital wave A macro is a predefined wave composed of elements whose waveforms can be attached to selected elements of the digital waveform The suggested values of such elements values of new points depend on the macro then The attachment of values to new points is in the following text called a macro expansion The macro elements can depend on a certain value which can be specified when adding the macro Therefore specific macros can exist such as macros simulating the RS232 while the data being tran sferred is specified by the user When dragging a macro from the Macros list to the Running macros list a window is opened in which all circumstances concerning the macro use need to be specified see 5 4 2 The macro parameter on which the elements waves depend is required Mmes during the macro expansion Its value can pening either be read from a file see 5 4 2 or a from a window in which you can specify Fis Fan Fihi such value The waveform elements referri
35. by clicking on the Configure wa ve button see 5 4 1 To create a wave you must attach a value to each element in all po ints Click on the One step button to move the main cursor one point to wards the wave s end If the cursor is already in the end the waveform length is increased by one After increasing the wavelength a value of the new point in each element is selected according to the element mode Seq If no macro is attached with the element the value of the previous point is used Otherwise the macro value in the given point see below is used This value can be modified by clicking on the E on the Page 58 User s Guide M631 Arbitrary Waveform Generator right of the screen The value is inverted for a signal In case of a bus an indicator is displayed in which the hexadecimal value of the bus in the gi ven point should be entered Clk A value of the nth counter bit see below is attached to a new point and the counter value is increased by one afterwards The bit number can be changed by clicking on the eventually from the ze ro bit to the 7th bit The Clk mode is accessible only for signals not for buses The mode of a given element is changed by clicking on the Seq or Clk text Click on the Insert step button to insert one point next to the main cursor The new point gains value of the previous point in each e lement By clicking on the Delete step button you can delet
36. ccur during the warranty period excluding errors for which ETC can not be held responsible ETC guarantees the re pair of the product or its replacement with a new or repaired one free of charge The ETC company shall not be responsible for malfunctions on the device caused by an accident incorrect manipulation unauthorized inter ventions or similar When requesting the guaranteed service the customer should send the device in its original package to the dealer from whom it was purcha sed or directly to the ETC company The warranty certificate together with a description of the defect or malfunction should be included in the packa ge The customer agrees that a new or repaired product to be shipped would be insured against damage or loss during the transport and that he will cover the costs for the shipment and insurance Software license agreement 1 GRANT OF LICENSE ETC Ltd as Licensor grants you the License a nonexclusive right to use and display this copy of the M631 software hereinafter the SOFTWARE this EM631 device and accompanying written materials on a single COMPUTER at a single location and only together so long as you comply with the terms of this License 2 OWNERSHIP As the LICENSEE you own the magnetic or other phy sical media on which the SOFTWARE is originally or subsequently re corded or fixed but an express condition of this License is that ETC Ltd retains title and ownership of the SOFTWARE recorded
37. creen see 3 2 4 2 Signal output level controls see 5 1 3 Frequency controls see 5 2 4 Trigger controls see 3 2 2 5 Editing a digital waveform see 5 3 5 1 Signal output level control The signal output level can be selected Was from a combo box and can be 3 3 V or 5V 134 5 5 2 Frequency control WARNING The term frequency expresses the generation frequency of waveform points in the digital mode The frequency is configured in a standard way see 3 2 1 Page 57 M631 Arbitrary Waveform Generator User s Guide 5 3 Editing a digital waveform Click on the Edit button in the main screen to open a window in which a di gital wave can be mo dified or created A previously stored wa veform can be opened by clicking on the Load wave button Click on the Save wave button to store a waveform to an ex ternal file The creati on of a digital wave form is described in Chapter 5 4 5 4 Creating a digital waveform Click on the Edit button in the main screen to open a window in which a digital wave can be modified or created By clicking on the Clear wave button you can erase the waves of all elements layout of the elements remains unchanged The New wave button removes all elements Before the initial creation of a wave you must attach elements which represent the pins in the digital waveform screen to used pins of the digital adapter This step is performed
38. cy with rising frequency the available step value increases If you cannot generate the specified phase because of too high a frequency the pro gram adjusts the value in the phase indicator field together with the wave position on the Channel B screen to respond to the true phase between the Channels A and B This process is reversible therefore the original phase value is restored after resuming the lower frequency 4 8 Information from vertical and horizontal cursors on the screen The cursor information layout is the same for both Channels there fore only the layout for one Channel is described in the following text qd de 34 4 lt 4 2 gt ee ie lt 5 3 H 4 s 3 606 6 1 Percent rate of the time between the vertical cursors to one period of the waveform 2 1 time delimited by the vertical cursors 3 Time delimited by the vertical cursors Page 42 User s Guide M631 Arbitrary Waveform Generator 4 Percent rate of the segment between the horizontal cursors to the part given by the maximum and minimum of the wave 5 Voltage between the horizontal cursors 6 Voltage between the red cursor and the zero mark 4 9 Waveform screens The waveform screens are placed in the upper right corner Channel A on the left Channel Bon the right The control of the screens is stan dard see 3 2 3 and both of the screens have horizontal and vertical cur sors and the zero
39. d verti cal cursors and with the zooming ability In the i middle of the lower part of the window you can see the information from the vertical and horizontal cursors and information a bout the position of the mouse cursor on the screen of the edited waveform 5 6 gt 2017Y aN 54 115 715 lt 9 2 gt 5192V 158us ll 11717 pix lt 10 3 gt 52 53us 7309us 1 14kHz 11 4 gt 18 98us LIRE 71 51us lt 12 7 8 1 Voltage between the mouse cursor and the blue horizontal cursor 2 Voltage between the mouse cursor and the red horizontal cursor 3 Time between the mouse cursor and the red vertical cursor 4 Time between the mouse cursor and the blue vertical cursor 5 Time between the mouse cursor and the start of the edited wave 6 Time between the red vertical cursor and the start of the edited wave 7 Time between the blue vertical cursor and the start of the edited wave 8 Voltage between the horizontal cursors 9 Percent rate of the time delimited by the vertical cursors to the length of the whole wave 10 Number of points between the vertical cursors 11 1 time delimited by the vertical cursors 12 Time delimited by the vertical cursors Page 51 M631 Arbitrary Waveform Generator User s Guide The program offers three tools for hand editing the wave they can be combined one segment of the waveform is created using one t
40. e is not cut in this place In case that there is already one device installed in the computer in stallation of the next does not require another EM907 set After fastening the device in the computer and attaching the supply connect the device to the computer with the second connector of the flat cable used by the already installed device Before installing another device change its address so that it is different from the addresses of already installed devices WARNING The address of one of the devices must be 0 The printer should be attached to this device 2 2 3 M631 E hardware installation In this case the installation is very simple It consists of the following steps Make sure that the generator switch is in the position Off If it is not switch it off Connect the supply power adapter to the device If needed modify the device address using the switch on its rear panel Connect the generator to the EPP computer port with a standard 25 pin cable from the accessories If needed connect the printer with a standard cable not included in the accessories Switch the generator on from the switch located on the rear panel Page 18 User s Guide M631 Arbitrary Waveform Generator Printer output Address switch DIL switches Off switch EPP input Power input WARNING The address of one of the devices must be 0 The printer should be attached to this device WARNING The DIP switches may be in the ON pos
41. e the point next to the main cursor Information concerning the selected wave see 3 2 4 is presented in the upper left window corner The element mode Seq Sequence Clk Clock is displayed in the Type field When the element mode is Clk the counter status is displayed in the Counter indicator field The status value can be changed by writing a value into this field Information about the attachment of elements signals to the digital adapter pins is dis played in the list below this indicator For example the expression Clk DO indicates that the Clk signal is on the digital adapter s pin 0 A num ber expressing a bus signal bit attached to a pin is displayed next to the bus name when the element is of type bus A selected bus can be broken down to signals each representing one bit of the bus by clicking on the Explode button while already attached values are kept If a selected sig nal was a part of a bus the bus is created again from its signals after a click on the Implode button TIP If you break down the bus A 0 1 for example you get the sig nals A00 and A01 You can add the A02 signal see 5 5 and when composing the signals A00 and A01 you get the bus A 0 2 The highest bit is made of the A02 signal values If you need to use the One step Insert step or the Delete step button several times you can enter the number of desired repetitions into the belonging indicator and click on the
42. eens of created waveforms 44 4 13 Selected waveform screen 45 4 14 Information from vertical and horizontal cursors on the selected wave screen 46 4 15 Waveform modification tools 46 4 16 Mathematical editor 47 4 17 Manual editor 31 4 18 Harmonic components editor 53 4 19 Amplitude modulation editor 55 9 Digital m de aserne nn ea get oa oh A RAT ed 57 5 1 Signal output level control 57 5 2 Editing a digital waveform 57 5 3 Zmena digit lneho priebehu 58 5 4 Creating a digital waveform 58 5 4 1 Configuration of digital waveform signals 61 5 4 2 Addition of a macro 62 5 4 3 Macro creation 63 5 4 4 Configuration of macro elements 64 6 Import of continuous waves from the M621 oscilloscope mode 66 6 1 Frequency control 67 6 2 Information from vertical and horizontal cursors on the belonging screen 67 6 3 Waveform screens 67 6 4 Control elements lock 68 6 5 Import of waveforms
43. er side of the devi ce see Figure 3 1 2 Fig 3 1 2 3 2 Description of basic software control elements After running the M631 program a control panel is displayed on the screen depending on the chosen operating mode Three modes are avai lable analog see chapter 4 digital see chapter 5 and import from an M621 oscilloscope see chapter 6 The program was designed so that its Page 22 User s Guide M631 Arbitrary Waveform Generator control is the simplest possible and conforming with conventions used in the MS Windows environment We will be describing how to control the program in the following text therefore let us adopt these terms for wor king with a mouse Click Point with the mouse cursor to a chosen object and then press and release the left mouse button Double click Click twice on a chosen object Drag and Drop Point at the object you wish to move Press the left mouse button and hold it Move the grabbed object to the desired position Release the mouse button Entering a value into an indicator field Click on the indicator Enter the desired value using the keyboard and confirm it by pressing the Enter key Writing a value into an indicator field Click on the indicator Enter the desired value using the keyboard Adjusting a value with a scrollbar It is possible to change a value by dragging the scrollbar rider Click on one of the scrollbar arrows to inc rease decrease a value by
44. es as recommen ded The DIP switches placed beside the address switch should be in the 0 position OFF on all device with the address other than 0 Fig 2 2 4 1 Fig 2 2 4 2 2 2 5 Digital adapter installation Installation of the internal version A631 I Connect the EA626 connector adaptor to the computer on any of the free positions Plug the ending connector of the EA626 in the connector on the lower side of the generator The installation inside of the computer is now finished If you want to use the digital adapter plug the end connector of the digital buffer EA631 cable to the connector adaptor and a necessary num ber of the adapter clips to the EA631 Installation of the external version A631 E Connect a necessary number of adapter clips to the EA631 digital buffer Plug the connector on the ending of the digital buffer cable into the connector on the lower side of the generator Page 20 User s Guide M631 Arbitrary Waveform Generator 2 3 Software installation The software to control the M631 arbitrary waveform generator is available in versions for these operating systems or environments MS Windows 95 MS Windows 98 Windows 2000 and Windows NT The soft ware is included in the M631 package All versions of the program in all available languages can be found on the CD ROM you received with the shipment An installation wizard the autorun exe program can be found on the CD ROM After run
45. g the waveform The zero mark is a dark gray horizontal line indicating the zero voltage value There are three methods of zooming the displayed waveform After a click on the Zoom max button you should specify the point you wish to zoom and click on it The program zooms the point s neighborhood so that one point on the screen corresponds to one point of the waveform The text label Zoom 1 1 should appear in the upper left screen corner Page 27 ex ex M631 Arbitrary Waveform Generator User s Guide When clicking the Over zoom button the point you wish to zoom should be chosen and clicked onto The program zooms the point s neigh borhood so that several points on the screen respond to one point of the wa veform The waveform points are joined by dark green lines eventually po ints The text Over zoomed appears in the upper left screen corner When clicking the Zoom in button you should specify a starting point of the zoom Click the point while holding the left mouse button down When you release the mouse button the point under the mouse po inter determines the end point of the zoom The waveform is zoomed so that the starting point is on the left of the screen and the end point on the right An information of how many waveform points respond to one scre en point appears in the upper left screen corner TIP When clicking on any of the previously mentioned buttons the latter stays selected until a po
46. generator is illustrated on Figure 1 1 The generated waveforms are stored in the ME memory in a digital form using an 8bit resolution The memory addressing is handled by the control unit CNT using 18bit addresses The address counter is adjustab le to an arbitrary cycle thus the segment length belonging to one period or a single generated wave can be in the 1 to 256k points range The memo ry contents just as the shape of the generated waveforms is determined by the data being written by the CCT communication control unit from the Page 10 User s Guide M631 Arbitrary Waveform Generator computer into the memory The CNT unit includes a generator of clock speed impulses for fast DA converters based on a phase locked loop PLL with a 16bit control word which enables to control the frequency with a step of 31ppm maximum The analog signal is generated by the fast D A converters DAA and DAB Outputs of the DA converters are connected to the output amplifier AMA AMB through low pass filters FA FB with an adjustable limit frequency SMHz 20MHz Off The output of the AMA and AMB amplifiers is connected with the output connector CHA or CHB through the output attenuator with a setable attenuation which can be 0 or 20 dB and a 50 Ohm output impedance The signal level of either Channel is regulated by the output volta ge of the MA MB amplifiers Inputs of these summing amplifiers are controlled by the D A con verters outputs ALC
47. hannel A filter controls see 4 4 13 Information from the vertical and 6 Channel B level controls see 4 1 horizontal cursors on the belonging 7 Channel B shift controls see 4 2 screen see 6 2 8 9 Page 66 User s Guide M631 Arbitrary Waveform Generator 6 1 Frequency control WARNING The term frequency stands for the generation frequency of individual points in this mode The frequency is adjusted in a standard way see 3 2 1 TIP The wave repetition frequency is presented beside the informati on from the cursors see 6 2 6 2 Information from vertical and horizontal cursors on the belonging screen The layout of vertical and horizontal cursors is the same for both Channels therefore only one Channel is described in the following text 1 ge we l 87 7 l l 2 3kKHz un E 3 212 438 94us 5 16697 t 4 6 1 Percent rate of the time delimited by the vertical cursors to the wave period 2 Time delimited by the vertical cursors 3 1 time between the vertical cursors 4 Frequency of wave repetition 5 Percent rate of the voltage between the horizontal cursors to the peak peak voltage 6 Voltage between the red horizontal cursor and the zero mark 7 Voltage between the horizontal cursors 6 3 Waveform screens The waveform screens are standard continuous waveform screens see 3 2 3 with vertical and horizontal cursors with the zero mark and without the zoo
48. he button placed below the Vavg indicator oe 0 the output attenuator 1 10 is switched off and the Channel output is turned on 20 the output attenuator 1 10 is switched on an the Channel output is turned on Off the Channel output is turned off 4 1 3 Influencing the level by external voltage The M631 generator offers the possibility to modify the level by an external voltage This option is switched on by pressing the On button below the Vrms indicator and off by pressing the Off button below the Vrms indicator The value of the voltage plugged in the EMA EMB input is added to the level value configured in the device NOTICE The frequency of the signal carried to the EMA EMB in put should be at maximum 100 Hz to assure that the level is influen ced by the external voltage correctly TIP If you connect a harmonic signal with a considerably lower fre quency e g 100x lower than the frequency configured in the gene rator to the input the signal generated on the output will be amplitu de modulated Page 38 User s Guide M631 Arbitrary Waveform Generator 4 2 Channel shift control It is possible to modify Sti the Channel shift using a scroll con Sa our ol ai bar on the right below the Shift label Moving it up changes the shift towards positive values and vice versa Another possibility is to enter a value directly into the Vp in dicator see 4 1 1 The program adj
49. int is selected However if the button is pressed again the action is cancelled and the program does not wait for the point input After clicking the Zoom out button the wave zooms so that twi ce as many waveform points are displayed After clicking the Zoom 1 1 button the waveform shrinks so that both the beginning and the end of the waveform can be displayed on the sc reen You can drag the screen after clicking on it anywhere except on any of the cursors while holding the mouse button down Movement to either side makes the waveform display move towards the beginning or the end of the waveform 3 2 4 Digital waveforms screen One screen layout is used for presenting digital waveforms in the whole program In this chapter we will describe the user s control over the screen The whole screen is divided by gray horizontal lines One element of the process can be displayed in each part The name of the element is shown on the left of the screen If the element is of the bus type More signals joined to one The Page 28 User s Guide M631 Arbitrary Waveform Generator result is not specified with logic zero one but with a number under a con dition that it is known which signal approves for what bit of a number 0 x is displayed along with the element name X is the index of the hig hest signal when the bus is composed of x 1 signals Values that the bus gains are indicated by two horizontal lines see Figure 3 2
50. ition only when the device s address is 0 WARNING Use the connecting cable from the accessories for conne cting the generator to the computer Using an inappropriate cable can decrease the communication reliability or eventually disable it com pletely WARNING Don t use a cable longer than 2 meters for connecting a printer to the device Using a longer cable can decrease the commu nication reliability 2 2 4 Connecting several EMLII system devices to the computer When connecting several devices to the computer it is necessary to follow these rules The address of each device should be unique At least one of the devices must have the address 0 see Chapter 2 2 1 M631 1 2 2 3 M631 E The printer should be connected to the device with the address 0 External devices are put one on another When connecting several external devices it is necessary to use the EA604 2 adapter if connecting two devices see Figure 2 2 4 1 the EA604 4 adapter if connecting three devices see Figure 2 2 4 2 or two EA604 2 and one EA604 4 adapter if connecting four devices Page 19 ery ery cS cS M631 Arbitrary Waveform Generator User s Guide If the M621 oscilloscope is one of the connected devices place it above the others because it must be opened when changing its address It is re commended to use the address 0 with the oscilloscope The printer is easily connected to the device when placing the devic
51. l s amplitude never falls should be entered in the Min amplitude indicator field In the Carrier frequency field the carrier frequency as a multiple of the modulating frequency hence the number of periods of the harmo nic frequency modulated by one period of the waveform should be speci fied The text on the right shows the carrier frequency If it is red the car rier frequency is too high The carrier frequency however depends on the frequency adjusted in the generator Therefore it is possible that the wave is generated correctly at somewhat lower generator frequency That is why it is possible to modulate a signal with a frequency that is considered to be too high The Modulation of a harmonic signal with a given frequency by the chosen waveform is invoked by clicking on the Modulate button A click on the Ok button ends the amplitude modulation editor and all changes are stored A click on the Cancel button ends the amplitude modulation edi tor without storing any changes WARNING If another editor is used for modifying a waveform after it was created in the amplitude modulation editor no information about the waveform is displayed in the Editor data view Page 56 User s Guide M631 Arbitrary Waveform Generator 5 Digital mode The digital mode is used for a generation of digital waveforms Fig 5 1 The digital mode screen A brief description of the screen elements 1 Digital waveform s
52. l MS Word are registered trademarks of the Microsoft Corporation IBM PC VGA are registered trademarks of the International Business Machines Inc Nextra is a registered trademark Recommendations for the generator use Do not attach supply power to the device outputs The voltage on the generator outputs is not defined after switching the computer on It is defined after running the software Therefore it is re commended to disconnect the device outputs when turning the compu ter device on especially when they are connected to circuits sensitive to voltage values in the 10V range When using a measuring do take care that the ground GND of the Page 8 User s Guide M631 Arbitrary Waveform Generator computer is connected to the ground GND of the device The power adapter output is separated from the wall plug Who is this book addressed to This book is addressed to the users of the M631 dual Channel ar bitrary waveform generator In order to fully understand the book and the software the user should have basic knowledge of how to operate device of this type and basic knowledge of MS Windows environment In case of any problems using MS Windows we recommend MS Windows User Manual as an additional reference Page 9 M631 Arbitrary Waveform Generator User s Guide 1 Technical features of the generator PRT to printer EPB to computer Fig 1 1 Block scheme of generator The block scheme of the
53. l port or EPP ECP mode If the parallel port is not set to EPP modify the settings so that the port operates in the required mode if possible select the EPP V1 9 mode The setup procedure for EPP ECP is described in the manual provided with your computer WARNING If the parallel port of your computer is not working in the EPP or EPP ECP mode the software reports a communication error on the startup 2 24 M631 I hardware installation into an AT computer Prior to M631 I generator installation it is necessary to check its configuration Facing the PCB the circuit board two configuration fields can be found Four pairs of pins labeled ADDRESS serve to set up the device s address on the bus The pairs stand for values 1 2 4 and 8 respectively These values are applied when the jumper on the pin pair is not installed If the jumper is installed the value of the corresponding power is 0 A pair of pins labeled PU serves as the attachment of pull up resistors to some control signals which increases communication reliability If the jumper is mounted the resistors are attached otherwise they are not connected We recommend installation of the PU jumper only on a de vice with address 0 Page 14 User s Guide M631 Arbitrary Waveform Generator Individual address values can be adjusted according to the following table aes 1 AE OS ES EE MONET METTENT iad CE ae open open insanca open Ce sanea sed sa
54. mark The Channel A wave has red color Channel B wa ve is blue The cursors are switched on automatically when the mouse cursor is over any of the screens or when the user changes a setting that causes a change in information from any of the vertical or horizontal cursors The cursors are switched off when the mouse cursor is over the module clip board 410 Selection or creation of waveform for a given Channel By clicking on the Select wave A or Select wave B button a window so called waveform gallery see 4 11 is opened In waveform gallery you can select a wave for Channel A or Channel B Page 43 M631 Arbitrary Waveform Generator User s Guide 4 11 Waveform gallery The waveform gallery serves for selecting a waveform for a given Channel It also offers a more detailed view on chosen waves 1 Fa i a Tee I 177 a 4 2 A brief description of the screen elements follows 1 Screens of created waveforms see 4 12 2 Selected waveform screen see 4 13 3 Tools for wave modification see 4 15 4 Information from the vertical and horizontal cursors on the selected waveform screen see 4 14 4 12 Screens of created waveforms The program can store up to 32 waves Movement between these waves is possible using a scrollbar on the right The screens of created waveforms are placed in the upper part of the window These screens are standard 3 2 3 without cursors and without the
55. ming ability The upper screen relates to the Channel A and the lower to the Channel B Page 67 M631 Arbitrary Waveform Generator User s Guide 6 4 Control elements lock The Lock level button enables you to lock the Channel level con trols in this mode when clicked This function is automatically switched on after data import from the M621 When importing data from the M621 the frequency control is swit ched to the Step mode see 3 2 1 6 5 Import of waveforms from both Channels Import of a waveform from the M621 is started by clicking on the Import button After the file containing the signals has been specified the program starts to search the signal period on the Channel A If the se arch is unsuccessful the search continues on Channel B The search pro cess can be aborted by clicking on the Break button After finishing the search eventually aborting it a window in which the period is configured is displayed see 6 6 6 6 Setting up period of imported wave After the Import button has been clicked and the period search is over a window in which the found period can be modified is displayed Two continuous wave sc reens see 3 2 3 with reference cursors one horizontal cursor and the zooming ability are pla ced in the window On the left below each of the screens there is the number of signal points between the reference cursors displayed The section between the reference cursors will be
56. ndow and can be moved anywhere on the desktop Close the window by Page 35 ery M631 Arbitrary Waveform Generator User s Guide clicking on the x in the upper left corner to return the group back into the main window There are two additional buttons in a control elements group when it is in a separate window They are located in the lower left corner and wear labels Hide To hide the main application window Show To show the main application window WARNING When you change the generator mode all control ele ment groups are returned back into the main window 41 Channel level control The Channel level can be adjusted using the scrollbar dBm fe J dB fo F on the right below the Lvl label Moving the scrollbar ne dB Man ci Seod upwards increases the level downwards decreases it It is also possib le to change the level relatively to a certain value The rate of the ac tual level value Vpp to another value Vc in dB is shown in the dB indicator field This value is being updated depending on the current operating mode 1 The Auto dB mode is switched on by pressing the Auto dB but ton In this mode the Vc value is equal to Vpp hence the indicator dis plays 0 The Manual dB mode is switched on by pressing the Manual dB button In this mode the Vc value can only be changed by clicking on the Set 0 dB button The Vc is set equal to Vpp afterwards After entering the value into the d
57. nea open ooe Co oren RE isana open open e a nn ne ean Re ee ly TIP If you wish to install only one measuring device of the EMLII row it is not necessary to change factory settings of the jumpers Q WARNING One of the devices used must always have address 0 WARNING Two devices cannot have the same address O a TIP If you change any of the address jumpers you will need to chan gt ge also the device s address in the software see 3 2 7 or let the pro Q gram find the device s new address automatically on startup Page 15 ery M631 Arbitrary Waveform Generator User s Guide When installing the device switch off the computer remove the ca se cover and the plastic plate covering the 5 1 4 inch floppy drive space Slide the M631 into the computer s 5 1 4 inch floppy drive space and se cure it in place with four screws from the accessories WARNING Don t use screws longer than 6 millimeters Longer screws could damage the module Connect one of the free supply cables used for powering floppy disk drives to any of the free power connectors Disconnect the flat printer cab le from the motherboard Plug the flat cable from the accessories to the fre ed connector on the motherboard Use the end of the cable that has only one connector The end with two compacted connectors shall be connected to the generator using any of the two connectors Make sure that the colored wire is connected t
58. ng macro cycles is presented in the Cycles field The list of disposable macros can also be modified macro is se lected by clicking on it in the Macros list Click on the Delete button to erase the chosen macro A click on the Export button stores the mac ro in an external file The stored macro can be added to the list by clicking on the Import button and choosing its source file The creation of a new macro is started with a click on the New macro button Click on the Configure button to modify it see 5 4 3 5 4 1 Configuration of digital waveform signals For the addition of an element to the wa ve you need to write its name into the Net na me field and to choose its type by clicking on the Bus a bus Single a signal If you add a bus you must l EE specify the highest bus rex bit the bus size decrea gratter sed by 1 by entering it e in the Bus Length fi eld Further information about modes can be found in the Chapter 3 2 4 After clicking on the button 1 it is possible to attach pins to signals A pin can be attached to a signal by grabbing the pin from the Available pins list placed on the left and dragging it onto the signal in the Assign pins list If every signal has a pin attached the element can be ad ded to the Nets list Page 61 OT M631 Arbitrary Waveform Generator User s Guide This is done by clicking on the Add to nets button When the Discard
59. ng to the macro are ET by a green color The parameter value should be written in hexadecimal form in the field 1 When clicking on the Ok button the waveform of the cur rent macro cycle depends on the specified value After clicking on the Finish button all macro cycles will be depending on the specified value Click on the Finish 1 or Finish 1 button to choose whether the va lue will increase or decrease by with every macro cycle until the macro is deleted from the Running macros list The Abort button deletes a macro from the Running macros list and so terminates its expansion TIP Several macros can be added to the Running macros list The higher expansion preference gain macros placed higher in the list Several macros may be expanding at once However only those macros are expanded which attach values to signals not occupied by another macro If a value is already attached to any macro element by another macro the expansion of the former is stopped Page 60 User s Guide M631 Arbitrary Waveform Generator WARNING After the whole macro is attached to the elements the macro is removed from the list TIP To choose an expanding macro click on it in the Running mac ros list Information about the chosen macro is displayed in the indi cator fields below the list Information about what part of the macro was already attached to the elements is shown in the Position field The number of the remaini
60. ning it you can choose an environment in which you want to install the software and its language mutation The wizard au tomatically chooses the environment and language The installation wiza rd is terminated by clicking on the Exit button After pressing the Install button the installation process is started with the chosen parame ters The installation is performed in standard way WARNING If the wizard chooses the program version No suitable version it means that no appropriate version possibly exists for your environment This setting may be changed however suitability of ver sion for your environment is not guaranteed TIP We recommend you to exercise the automatic update feature see 3 2 5 Updates or to follow up the WWW pages of our company from where the program update can be obtained This service is provided for our customers currently free of charge Page 21 M631 Arbitrary Waveform Generator User s Guide 3 Basic control elements of the generator 3 1 Connection points layout All connection points inputs and outputs related to the generation of an analog signal are located on the front panel see Figure 3 1 1 Modulation input Two color status Output of chanel B of chanel B LED Modulation input of chanel A Input of external trigger output of trigger signal Output of chanel A There is a 34 pin con nector assigned for a connection of the di gital adapter on the low
61. nt button is pressed the program computes the whole waveform according to the specified formula Page 48 User s Guide M631 Arbitrary Waveform Generator TIP An expression contains x as a variable running from Real start to Real end and may also contain the constants y and z if these are defined and permitted In order to describe the process with more functions you can use the Advanced mode This mode is switched on off by clicking on the Advanced button In this mode up to 10 expressions that determine the user defined part of the wave can be specified Working with constants is not different from the previously menti oned single formula case The Real start and Real end indicators defi ne the range for the variable x for one formula it is possible to specify di verse values for each expression You must specify which part of the waveform an expression repre sents for each waveform An index or an expression representing the in dex of the expression s starting point in the waveform 0 16383 should be written into the Wave start indicator Likewise an index or an expressi on representing the index of the last point 0 16383 should be entered in the Wave end indicator Both these values need to be non negative inte gers TIP Also an expression containing the independent constants y and z if these are defined and permitted but not containing the running variable x can be specified in the Wave star
62. o Pin No 1 on the motherboard Plug the flat cable with which the printer connector was attached to the motherboard into the generator connector labeled PRIN TER In case that the flat cable con necting the prin ter connector is too short you can use the extension cable from the accessories The installation is now finished and you can mount the com puter cover back again The ge 31 FDD 51 FDD Printer EPP input nerator conne power power output ctors are shown connector connector on Figure Fig 2 2 1 1 2 2 1 1 Page 16 User s Guide M631 Arbitrary Waveform Generator In case one device is already installed in the computer you can in stall a second device by using the remaining connector of the flat cable from the accessories Don t forget to change the address so that it is diffe rent from the address of the already installed device WARNING The address of one of the devices must be 0 The printer should be attached to this device TIP When using the M621 digital oscilloscope in combination with the M631 it is possible to change the position of control elements in the analog mode see Chapter 4 2 2 2 M631 1 hardware installation into an ATX computer Mounting the device into an ATX computer does not differ from mounting it into an AT computer Only connection of device to the com puter and the connection of printer connector differs The kit for ATX computers consists of two parts
63. onization input namely by clicking on the On button pla ced under the Sync out label The synchronization impulses are changes from logical 1 to logical 0 of 20ns length generated in the single mode at the waveform s beginning in periodic mode in its end The waveform generation is launched by clicking on the Go but ton In the periodic mode this action also activates the Stop button which can then be pressed to stop the generation WARNING If the external synchronization input is on the external triggering cannot be used 3 2 3 Continuous waveforms screen The same screen is used for displaying continuous waveforms in the whole program Each screen has certain characteristics e g whether there are cursors if the waveform can be zoomed etc that vary depending on the use of the screen We will provide a complete description of the sc reen in this chapter and only a list of properties embodied in the particular screen will be given with each of its implementations throughout the next chapters Common properties The waveform is indicated by a continuous colored line If there are less horizontal points on the screen than the length of the wa Page 26 User s Guide M631 Arbitrary Waveform Generator veform two modes can be used for displaying it Avg and MaxMin The Avg mode assigns the arithmetic average of the waveform points belon ging to a certain screen point to point The MaxMin mode selects
64. ool a nother part with another tool A tool is switched on off by clicking on its belonging button If a tool has already been selected that means it is tur ned on and another is switched on the former is switched off e Serves for point after point editing After pressing the mouse but ton over the screen the waveform copies the mouse position until the button is released Changes made during one drawing operation can be undone by clicking on the Undo button immediately after they were per formed a Serves for editing of a waveform composed of lines After pressing amp the mouse button over the screen the point under the mouse cursor is considered to be the first point of a new line When the mouse is moved and the button released the new mouse position determines the ending po int of the line The program connects these two points with a direct line The last created line can be erased by clicking on the Undo button im mediately after its creation Serves for editing of a wave composed of curves After drawing a li FA ne in the same way as it was described above a third point of the curve should be specified When you press the mouse button over the sc reen move the mouse cursor to the third point and then release the mouse button The program draws a curve connecting the starting and the ending point of the given line and the third point The last curve can be erased by clicking on the Undo button immediately after
65. p to 1 6Vpp attenuator set to 20dB Output voltage setting step lt 8mV attenuator set to 0 dB lt 800uV attenuator set to 20dB Output voltage accuracy lt 2 of actual value Output impedance 50 Ohm Output impedance accuracy 1 5 attenuator set to 0 dB 2 5 0 attenuator set to 20 dB Output voltage shift range 4V attenuator set to 0 dB 400mV attenuator set to 20dB Shift setting accuracy lt 1 5 of the range Output voltage filters Independently for each Channel settable to 5MHz Low 20MHz High or 40MHz Off Output voltage edge length lt 10ns filter setting Off Short circuit protection Unlimited for single Channel 10s for both Channels Waveform memmory length 16384 points in standard mode for each Channel Settable up to 262144 points in digital and special modes Frequency setting step Page 70 lt 0 003 of actual value User s Guide Frequency accuracy M631 Arbitrary Waveform Generator lt 0 01 of actual value Max output update rate 50 000 000 points s Output voltage period range 0 1Hz to 25MHz Modes of operation periodic free run periodic synchroni zed single triggered Synchronization input can be configured as TTL compatible in put or as the output of trigger pulse Synchro input threshold level cca 1 6V Synchro input
66. panel onto a selected waveform The original waveform on the screen is re placed by the imported one When moving the panel over a wave screen a window where the source file name should be specified is opened 4 13 Selected waveform screen The selected wave screen is located in the lower left part of the win dow This screen is stan dard see 3 2 3 with ver tical and horizontal cur sors and with the zoo ming ability Page 45 ery M631 Arbitrary Waveform Generator User s Guide The real mode of this screen is switched on off by clicking on the Real view button This mode is available only by this particular screen In the real mode the waveform is displayed as it is represented in the devi ce Because the number of points which the generator produces during one period of the waveform is decreasing with rising frequency the waveform in this screen changes accordingly A wave displayed in the real mode fits the best the waveform on the generator s output WARNING When using high frequencies the waveform may be unre adable Use an appropriate magnification if this is the case 4 14 Information from vertical and horizontal cursors on the selected wave screen 1 gt Freq 10 0014kH2 190 2 5 2 at eae 7790 pix 6 3 gt t 44 9 6 3kKHz 7 4 gt 3 569 190 16us lt 8 1 Frequency configured in the generator 2 Voltage between the horizontal cursors 3
67. s not added and the window closes 5 4 3 Macro creation PThe procedure of the macro creation is similar to creating a digital waveform You must specify the macro name in the Name indicator After clicking on the Configure outputs button 4 the addition of macro ele ments can start see 5 4 4 The setup of the macro itself is similar to creating a wave form see 5 4 with a difference that the macro creation is performed in this window and only the One step Insert step and Delete step but tons are available All operations that can be performed with the digital waveform screen can be done when creating a macro as well The macro can change its wave in dependence on a specified value The size of this variable can be chosen from the Value kind combo box The nth bit of the variable can be attached to a selected element see 3 2 4 in the point indicated by the cursor if the element is of the signal type or to the zero bus bit if it is a bus In the latter case the n plus first Page 63 M631 Arbitrary Waveform Generator User s Guide variable bit is attached to the first bus bit and so on This is done by clic king on the Assign value button The number n is entered into the Assign V field in the case of a signal and into the left Assign from V field in the case of a bus The bit of the variable which is to be assigned to the highest bus bit is shown in the right indicator field when working with a
68. s value field For e xample the formula sin pi 4 cos pi is correct 2 _ TIP An expression containing neither the variable x nor any of the There is a field with a description of the given constant on the right next of the constant s value field You can write a verbose description into this field The description does not affect the generated wave and the u ser enters it merely as a label for his own purpose You must enter the range of the variable x values for each wave form The value of x or an expression in the first generated point needs to be specified in the Real start field A value or an expression of the variable x in the last generated point should be entered in the Real end field permitted but not containing the variable x itself may also be used in the Real start and Real end fields For example the formula sin y 2 z is correct if the constants y z are defined and permitted g TIP Expressions containing constants y and z if they are defined and In order to exploit the whole output range of the generator the ex pression should contain values for x from Real start to Real end in the range from 1 to 255 The program offers the option of normalizing the ex pression so that it gains all possible values from this range The normali zation is switched on off by clicking on the Normalize button When the expression has been entered in the Formula field or it has been written into it and the Cou
69. st of the pha se locked loop In case that the Continuous mode is on all frequency changes are adjusted in the device immediately The Continuous mode is switched on by clicking on the Con button If the Step mode is on all frequency changes are adjusted in the device after clicking on the Set button The Step mode is switched on by clicking on the Step button TIP In case the Step mode is on the frequency set in the generator is indicated in the field by a green vertical line The frequency scale can be laid out in two different fashions line ar and logarithmic The linear view is chosen by a click on the Lin but ton logarithmic by a click on the Log button The Lin II button is used for activating a special linear view This presentation is linear and the minimum and maximum displayed frequen cy can be chosen Immediately after activation the two values are dis played in the frequency field the minimum frequency is displayed in the upper left corner and the maximum frequency in the upper right corner If Page 24 User s Guide M631 Arbitrary Waveform Generator you move the mouse cursor over the field both these values change accor ding to these rules 1 In the case that the cursor is on the left from the rider the frequency un der the cursor is assigned to be the minimum frequency The maximum frequency is given such value that the rider frequency is in the middle between the minimum and
70. t and Wave end indi cators The formula y 1 is correct if constant y is defined and permit ted TIP For a simplified configuration of the Wave start ws and Wave end we values the operation is implemented If you wish to create a waveform from two functions one of them for the first half of the wave and the other for the second half the best is to specify for the first function ws 0 we 50 and for the second ws 50 1 we 100 By entering a formula into the Formula field eventually writing it in and clicking on the Add to list button the expression together with its values Real start Real end Wave start Wave end is added to the list located in the upper left corner of the window If any of the speci Page 49 OT ery ery M631 Arbitrary Waveform Generator User s Guide fied expressions is selected you can replace it by a new expression with new parameters simply by entering the new formula together with its valu es and by clicking on the Replace button An expression can be selected by double clicking on it in the for mula list The selected formula is indicated by a blue stripe After double clicking on an expression in the list the expression is displayed in the Formula field and its values in the belonging indicators Click on the Delete button to dump the selected formula from the list After clicking on the Count button the program computes the wa veform according
71. the minimum and maximum within such desired points A vertical line con necting the maximum and the minimum is displayed The program auto matically switches between these two modes depending on the waveform being displayed Specific properties Vertical cursors are blue or red vertical lines that delimit a certain seg ment of the waveform Their position can be changed by dragging them to a desired location Horizontal cursors are blue and red horizontal lines that delimit a certa in range of values obtained by the waveform The position of these cur sors can be changed by dragging them to a new desired position WARNING The vertical as well as horizontal cursors are bound to their position on the screen therefore their position on the screen is not influenced by zooming the waveform Reference cursors are green or yellow vertical lines that delimit a certa in segment of the waveform The position of these cursors can be chan ged by dragging them to a desired location In case one of the reference cursors is outside the screen an arrow of the same color appears on the right eventually left It can be dragged and moved to a desired position as if it was the cursor itself When clicking on the arrow the displayed part of the waveform shifts so that the cursor can be seen WARNING The reference cursors are bound to their position relati ve to the waveform therefore their position on the screen is influenced when zoomin
72. the rider out of the displayed frequencies a red ar row appears beneath the frequency tuning arrow on the left eventually right This arrow can now be regarded as being the rider By dragging it in to the field you can adjust the rider frequency 3 2 2 Trigger mode control The single mode is switched on by clicking on the Single button In this mode the waveform is generated just once after the synchronizati on event has arrived after the trigger Page 25 ery M631 Arbitrary Waveform Generator User s Guide The periodic mode is switched on by clicking on the Period but ton In this mode the waveform is generated after the synchronization e vent has arrived and is generated on until the Stop button is pressed see 3 2 2 The waveform generation starts from the beginning when the next synchronization event arrives The triggering from an external source Trigger is switched on by clicking on the On button 1 placed below the Trigger label The sen off sitivity for the leading edge is chosen by clic s J EE king the button 2 for the trailing edge by but 1 2 3 ton 3 The triggering from an Emig Sync out Made internal source the software amj On o in Shop On o Single Fais is switched on by clicking on He Sie af Por the Off button placed below the Trigger label In this mode it is pos sible to activate the output of the synchronization impulses through the ex ternal synchr
73. to the list of expressions and specified constants WARNING In case the expression normalization is switched on each expression is normalized independently hence reaching values from 1 to 255 It is not possible to switch the normalization on off for each ex pression individually WARNING The constants are not bounded to the formula list Therefore their change and the following reevaluation of the waveform can cause change of the resulting wave even without changing any of the expressions WARNING The program does not check whether the specified expres sions cover the whole range of a waveform 0 16383 The points that are not included remain unchanged By clicking on the Ok button you close the mathematical editor and changes of a waveform are stored By clicking on the Cancel button you close the mathematical editor without making any changes to the waveform TIP If a wave modified in the mathematical editor has not consequ ently been changed by another editor after reopening the mathemati cal editor all values and expressions are for the given waveform auto matically presented in the indicators Page 50 User s Guide M631 Arbitrary Waveform Generator 4 17 Manual editor Manual editing is invoked by clicking on the Hand edit button in the waveform gallery The screen with the edited waveform is in the upper part of the edi tor window It is a stan dard screen see 3 2 3 with horizontal an
74. ttach the macro element to the sugges selected wave element WARNING If there are three exclamation marks next to a signal in the list 2 it means that a macro element containing more signals was attached to this wave element If there are three question marks next to a signal it means that a macro element with less signals was atta ched to the wave element All remaining signals are given zero value Page 62 User s Guide M631 Arbitrary Waveform Generator If the macro elements depend on a value this value can be read for each macro cycle from a specified external file When the text Value from file has been clicked this option is used and the value for each macro cyc le is acquired from a file Click on the Browse button to specify the file with the data The value in the File offset field indicates which byte of the file holds the value for the first cycle The offset value should be in he xadecimal form The format of the parameter can be selected from the Value combo box The parameter values are read consecutively from the file By clicking on the Count from file button you can choose to adjust the number of macro cycles in order to read the values assigned to the mac ro from the file starting at the File offset position until the end of file is reached By clicking on the Ok button the macro is added into the Running macros list and the window closes After clicking on the Cancel button the macro i
75. tween the waveform beginning and the cursor is displayed as a yellow colored number in the lower part of the sc reen on the left of the cursor The two green values signalized down on the screen express the di stance between the main and the supplementary cursor The right value stands for time the left for 1 time hence the frequency WARNING Not all previously mentioned values concerning cursors are necessarily displayed depending on the cursor position If any of the cursors move outside the screen an arrow of the sa me color as the cursor appears on one side of the screen You can manipu late it as if it was the cursor itself to change the cursor s position Controls used for changing the value of any of the wave elements are on the right of the screen see 3 2 5 3 2 5 Main menu The main menu consists of the following FilelExit Exits from the program and terminates it ModuleslEditor data view Opens the editor data view see 3 2 6 ModelAnalog mode Runs the analog generator mode see 4 ModelDigital mode Runs the digital generator mode see 5 Page 30 User s Guide M631 Arbitrary Waveform Generator Modellmport from M621 mode Runs the continuous waveform import from the M621 oscilloscope mode see 6 Settings Force digital outputs Digital outputs are switched on automati cally in the digital generator mode In other modes these are turned on if this option is checked Settings
76. usts the value to be the nearest possible to the one entered In case the continuous mode is switched on all shift chan ges are immediately performed in the device as well The continuous mode is switched on by clicking on the Con button If the step mode is switched on the shift changes are set in the device after the Out button has been pressed By clicking on the 0 button regardless of the selected mode shift in the device is set to OV The original value can be restored by clicking on the Out button WARNING If the text Shift above the scrollbar turns red it me ans that either the maximum or minimum of the generated process is out of range of the guaranteed device values 8V 8V and the manu facturer does not guarantee the accuracy and shape of the waveform 4 2 1 Channel shift indicators iv auf ol Besides indicators related with both the shift i and the level see 4 1 1 there are indicators re lated solely to the shift The indicator on the left displays the value of the shift in the pro gram The field on the right shows the actual value set in the device 4 3 Channel load control It is necessary to specify a true load in the M631 program Otherwise the M631 cannot display information about the level of a Channel and its shift properly Load By clicking on the Open button you choose no Open 50 Over load Click on the 50 button to set the load to 50 Ohm Page 39 GTI
77. utton the changes are not reflec ted and the original settings are used The window is closed Page 34 User s Guide M631 Arbitrary Waveform Generator 4 Analog mode The Analog mode is used when generating continuous waveforms The main screen offers all basic functions for controlling the generator see Figure 01 15 16 14 15 I 2 16 13 3 ma _ a Te 12 5 6 ma ee Se EE Sil aa Tee bisi 7 ole TE ao x sal m aw Elf aj Pip 7 TE Ts 7 S i e f np Fig 4 1 The analog mode screen A brief description of the screen elements follows 1 Main menu see 3 2 5 10 Frequency controls see 4 5 2 Channel A level controls see 4 1 11 Trigger controls see 3 2 2 3 Channel A shift controls see 4 2 12 Module clipboard see 4 6 4 Channel A load controls see 4 3 13 Channel B phase controls see 4 7 5 Channel A filter controls see 4 4 14 Wave selection or creation for a given 6 Channel B level controls see 4 1 Channel see 4 10 7 Channel B shift controls see 4 2 15 Information from vertical and hori 8 Channel B load controls see 4 3 zontal cursors on the screen see 4 8 9 Channel B filter controls see 4 4 16 Waveform screens see 4 9 The analog mode offers the possibility of changing a position of a control elements group After clicking on the text label above a group of control elements such as Channel A this group becomes a separate wi
78. y indicator field or wri ting it in and clicking on the Add to list button on the right from the in dicator a harmonic level window shows up WARNING Only a number representing the index of a harmonic should be specified in the Frequency field the number 2 for the se cond harmonic for example The level units can be Ee chosen from the combo box be side the Level indicator All i a units are relative to the level of i Lag the first harmonic It is necessary to specify the level of a harmonic in the Page 53 ext M631 Arbitrary Waveform Generator User s Guide Level field according to the chosen units The phase shift of the harmo nic relative to the first harmonic expressed in degrees can be entered into the Phase field The harmonic is added to the harmonics list by clicking on the Ok button Clicking on the Cancel button does not affect the list that is the harmonic is not added When specifying a harmonic in the pre viously mentioned manner the Finish button has the same meaning as the Ok button and the Abort button has the same meaning as Cancel A group of harmonics can be specified in the following way The frequency of the first harmonic which should be added to the list must be written in the First harm field The number of harmonics that are to be added to the list should be written in the Harm count indi cator By clicking on the 1 text the multiplication
79. zooming ability Page 44 User s Guide M631 Arbitrary Waveform Generator An indicator displaying the name of a waveform is placed below e ach screen This name can be changed by entering a new name into the fi eld Function of the button beside the name indicator varies depending on its label Create This button is displayed below all screens which do not contain a waveform yet Click on it to create a simple DC voltage waveform with value of OV at zero shift This waveform can be edited further by the wa veform modification tools Options If the corresponding waveform has a characteristic property which can be changed without using the waveform modification tools its value is accessible by clicking on this button A circle either red or green is displayed beside the button A se lected waveform owns a green circle while all remaining have a red one A wave can be selected either by clicking on circle below its screen or by clicking on the desired waveform s screen TIP A copy of a waveform can be created by dragging the original s screen onto the screen of the target wave Copying can also be perfor med onto a screen containing no waveform You can drag a wave onto the I O panel to export the wave to a specified external file When moving the waveform over the I O panel a window where the target file name should be specified is opened A wave can be imported from an external file by dragging the I O

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