Accessories Contents
Contents
1. M1 M2 F1 Channel select button 15 Probe This controls the attenuation level for the probe inputs This should be set to match the probe itself either 1x 10x 100x or 1000x When working with signal amplitudes within 200V either the 1X or the 10X setting can be used However if the signal amplitude is outside of 200V use the 100X setting Note that using the 10X setting with both the probe and the scope even for signals within 200V will provide better frequency response through the system due to smaller voltage swings through to the digitizer Voltage range Probe and probe settings 5mv div to 2v div Q probe 1 1 50mv div to 20v div probe 10 1 500mv div to 200v div probe 100 1 5v div to 2000v div probe 1000 1 Coupling The three selections available are AC DC and GND couple In the AC setting the signal for The selected channel is coupled capacitivity effectively blocking the DC components of the input signal and filtering out frequencies below 10 Hz The input impedance is 1MW 5pF In the DC setting all signal frequency components of the signal for the selected channel are allowed to pass through The input impedance is 1 MW 5pF In the GND setting both the input and the A D converter are connected to ground Again the input impedance is 1 MW 5pF Use for setting the Ground reference point on the display or if calibrating the DSO board 16 Volts Division V div controls the vertical sensitivit2. Level Width 100 ns 60 n Count TrigCh To select A1 A2 A3 A4 or Logic pod for Trigger source TrigType To select Slope Slope Pulse width Pulse width NTSC 525 or PAL 625 for Analog channel Level To adjust Trigger Level for A1 A2 A3 A4 or Threshold for Logic Channel Width Pulse width To adjust pulse width for A1 A2 A3 A4 Analog Channel trigger Count To adjust pulse count for A1 A2 A3 A4 Analog Channel trigger Alpa Capture Normal Rate 125M5a 5 1 Zoom E d 4 Depth 4K PE Probe f Pie Couple E V div EUU Offset Width EE NE vender NENNEN IM xp H 1 EE EE EN BEER us 3 3 3 3 3 3 3 24 ns E i i Count d ZI gt This figure shows 200ns Pulse width Trigger at third count 18 Capture Normal Rate 125M5a 5 Zoom Depth 4K Probe EDA co m E O BE mm mm U 1 5 E ETT TrigCh Triglype Level Width 200 n 24 n Count 00 MD AES This figure shows 200ns Pulse width Trigger at third count E a2 Capture Normal Rate 250M5a 5 Zoom al v Y Depth 4K Y Probe itm EFE Couple E viv ER Offset fy Hi He BN Parallel iD 11 0 STECECOE T T 1 am 2 x I2C DL scL D 0 s MEMINI C SPI D2 C5 Dl SCL DO SDA OK TrigCh Did E ES uS MU DUE TrigType Eig lt Length 4 Bytesshck Gl x ROLE Level 240 V P
3. m v Min 240 4mw v p p 4a mw Period 2 4uz Freg 416 667 KHz v Max TEN mv TEM v IT 7127 et y WIT l 4 447 SP b 1 FEL san Lo oa PES RENE y HH E a I Iv Automatic measurements on input waveforms can be performed These include frequency period rise time fall time min max area Pulse parameter measurements are performed as specified by ANSI IEEE std 181 1977 IEEE otandard on Pulse Measurement and Analysis by Objective Techniques Up to 10 signal parameters can be measured tested and displayed simultaneously To setup A measurement select the Measurements Setup menu and choose one of the tests to setup 1 to 11 Parameter Measurements Area V1Bar time V2Bar time Trigger time V1 V2 time V1 trigger time V2 trigger time H1 H2 voltage V max V min V p p V avg rms SQRT rms AC SQRT Period Risetime 10 90 Risetime 20 80 Falltime 10 90 Falltime 20 80 Pulse width positive Pulse width negative Frequency oum of all voltages sample time V1Bar time position of V1Bar in time V2Bar time position of V2Bar in time Trigger position of trigger Bar in time Time difference between V1Bar and V2Bar Time difference between V1Bar and Trigger Time difference between V2Bar and Trigger Voltage difference between H1Bar and H2Bar Maximum voltage Minimum voltage The difference between maximum and minimum voltages Av
4. A1 Ch A3 200MHz 3db Ch A2 Gh A4100MHHz 0 Sdb 25MHz db 1 5 96 50V NENNEN Trigger Sensitivity 1 0 2dv 250MHz lope Pulse width TV NTSC PAL Trigger Type PR S serte AA S est Pulse detect lt 16ns min 100K ohm 2pF Max Input Voltage Parallel 0 1 X don t care settings for all Digital channels PC 0 1 X don t care settings for 4 bytes Mouse Power Supply DCAdapteri2V 2A 0 USB Version1 120 h B KGS J j 2 49 Logic Analyzer pod USB 2 0 cable Calibrated Probe 300MHz 1 1 10 1 x 4 pcs User s Manual Software CD Housing with Color wires amp clips x 16 pcs DC Adapter 12V 2 0A Hot Keys Function G g pro CC ynpryn O o U u PUT RYP LT Zz D d Space Print screen Control key Ctrl G Ctrl H Ctrl D Ctrl Z Ctrl P Ctrl R GO Stop Probe Couple V div V for up v for down Offset O for up o for down Capture Trig Ch Trigger Channel T for up t for down Rate R for up r for down Trigger Level L for up I for down Zoom Z for up z for down Depth D for up d for down to switch A1 A2 A3 A4 M1 M2 F1 Channel Copy screen image to clip board Turn On Off Grid display Turn On Off H bar display Turn On Off Dots connect Turn On Off Zoom view Perform persist Refresh screen Tool Bar G The Go co
5. E 34 Fundamental Principles uper prece Pest II EE EN EE P Etica unn 34 Viste 11110005 REE Dm 35 Bao Ee o EE EE NE 35 EO A ELAN EE 39 The Characteristics of Weight Function cu uet dvu sea aoo uite treo sitos dian 36 Feber 36 miu NE RE EEE TE ENTER EE TIER 37 ESTE 6 TET E EE mE 37 SOELS EE NO 37 FIF 37 VM Mee E 37 EE EN EE 37 Accessories Contents e he DSO 50x12 Series Aluminum unit e Logic Analyzer Pod e Two pieces DSO 50212 or Four pieces DSO 50412 calibrated 300MHz Probe with x1 x10 10pF input Capacitance e Housing with twenty piece color wires and easy hook clips e USB 2 0 cable e Universal Power Supply with DC Adapter 12V 1A DSO 50212 12V 2A DSO 50412 e DSO 50x12 Series User s Manual e Control Software CD System Requirements In order to use the DSO50x12 the following equipment is necessary e Computer System Pentium PC system with at least one USB interface USB 1 1 or 2 0 version e Memory A minimum of 256 MB free RAM 512 MB or 1GB is better e Mass Storage At least one CD drives and hard disk drives e Monitor Any monitor compatible with the above display adapter e Operation System Windows 2000 XP VISTA Installing Hardware e Connects USB cable to DSO e Setup USB driver from CD e Plug in power source from 12V DC Adapter e Waiting for control software turn on Installing Software e Insert the distribution CD into drive E here E is CD driver e Enter file to run E DSO50x12 d
6. MS ENTENTETEWENI Ack Qu lemper re uum vum MSE GERE o2 0 VERE ie ae MSE pe Ac GE 0111001 1 73 d medi oder iue iud d OOF aa ET SE EN EMI RSE rie pps 108 qeya tet iens pipi qi s 00 pnr ESN em 1 UUU UU UU nn U UU ULU UU UU UU ULU This figure shows 4 bytes Ack 12C Trigger 19 Capture Normal Q Rate 250M5a 5 Zoom x ALES s soi frp ei Probe M Couple Me V div Offset Hi ed mv H B1E my H1 H TrigCh Parallel Di ll 0 L I2C DL SCL DO SDA SPI D2 C5 Dl SCL DU SDA DK SPI F Level 1 248 V m ae a rine 04 0100891010101 0 1 pg 11100110 LSR g E I m bebe bebes dee bel C3 active high FEE EET VE T T Update ee TrigType sen m Bd NE MM a JE LULL T I YHT TT na T Kor I E i This figure shows 28 bits SPI Trigger 20 Color Setup Color Setup v Display 41 Al Line A1 Dot Iw Display 42 Display M1 Display Mz Display F1 v Display Grid Channel DE r NIFT L Channel D7 UARTI Color choice User Color FEE m 7185871852855 T LLL ILLE A inverse GEN HETEN The color of each channel Group cursor line V1 V2 Trigger bar Screen H1 H2 can be set independently 21 Measurements N TE EKTE EE Eran N EL LEG LE 1 ee A v Max 240
7. PC Oscilloscope Spectrum Analyzer Logic Analyzer DSO 50x12 Series User s Manual Revision I CLOCK COMPUTER CORP http www clock link com tw Accessories COontente I e ee ene nemen ERE LERET ERR TERRE esie e esser sns 2 System Requirements ee ee ee e ee e ee ee 2 Installing Hardware eee eee eee 2 Installing Software Lease PEE ee ee rEen EIE II I REM MH MUM NM IMMER 2 FE RN m 3 NS rs K 2757 NS prs pes E TT 3 Main Screen RET 4 Horizontal Scroll Bar eee 4 Vertical Scroll Bar EE EE 5 Hardware Specifications EE MEER 5 DSO 50212 Hardware Specifications ee eee ee eee eee 5 5050412 Hardware Specifications cce eee ee eee 6 FOCE aoe EEE EEE TT 7 H T m RE EEE UU 8 PETN 9 View GE EE DPI 10 SLV OG 2 EEE EE GERE RENE 11 esl s g i Nt 12 Sica BO ENTRE 15 file s BOX cucina EE 18 Measurements see eee e eee ee e e eee ee e 22 Parameter Measurement eee e e eee ee ee ee eee 22 uu ec ERENEN 23 State IN EE E OE 24 USB driver install eO EO EROS 25 Windows 2000 BE 25 Windows XP USB driver install eeeseeeeenm enne 28 Windows Vista USB driver Install eee 30 Liste ua 62 ODO EEE 33 OV ell Bes EE EE EN EE EE 33 REP ERE ES en 34 Fast Fourier Transformations ccccccccccceceesceceeceeseeeeeeeeeeneeeeeeeeeeeeeeseees 34 Understanding FFT s Application ccccccssccceeecceeeceeseeseeeceeeseeseseneeees 34 Typical FFT of Applications E
8. aad MM 4 B CE p FE Fr po mpi p2 mp3 ps irp4 m I D E Dece o i Ch D3 E fo lL J E M NENNEN a h L C h Db5 100 ns Timebase ie C D X pur paume ameu ouumo jrpe Ch LD3 Horizontal Scroll Bar This scroll bar is used in conjunction with a selected waveform or cursor The Horizontal Scroll Bar will move a selected waveform or cursor left or right in the display area The Horizontal Scroll Bar works with Display Analog input channels Memory Logic Analyzer channels V1Bar V2Bar and Trigger Bar Vertical Scroll Bar This scroll bar is used in conjunction with a selected waveform or cursor The Vertical Scroll Bar will move a selected waveform or cursor up or down in the display area The Vertical Scroll Bar works with Display Analog input channels Memory H1Bar and H2Bar Hardware Specifications DSO 50212 Hardware Specifications ecord Length 2MB Ch Points Ch A1 1Sa s to 1Gsa s Realtime from 10Sa s to 1GSa s Sampling Rate Ch A2 1Sa s to 500MSa s Software catch from 1Sa s DO D11 1Sa s to 500MSa s to 200Sa s xternal clock 1KHz to 50MHz max From Logic Channel DO imebase Accuracy 1 1 950ppm nalog Channel Ch A1 Ch A2 bit resolution Input Bandwidth C A2 100MHa Zac 125MHz
9. d Phone 886 2 29321685 29340273 29335954 Fax 886 2 29331687 Email ufclockc ms9 hinet net 33 APPENDIX Fast Fourier Transformations Understanding FFT s Application Introduction to FFT Detecting and measurement are the basic functions of signal processing In some application it is important to analyze the periodic components of sinusoidal signals FFI can serve as a tool to dismember a signal into its periodic components for analysis purposes Typical FFT of Applications 1 Antenna s directional diagram is a function of Fourier s Transformation of transmitting current 2 On the front and back focus planes of convex lens in an optical system the amplitude distribution is a Fourier s Transformation 3 In Probability a power density spectrum is a Fourier s Transformation 4 In Quantum Theory the Momentum and Location of a particle are connected through Fourier Transformation 5 In Linear System Fourier Transformation is the product of System Transmission Function times Input Signal Fourier Transformation 6 The Noise Analysis of signal detecting can be obtained through Fourier Transformation These are all different applications but they share the same analytical path which is Fourier Transformation Fundamental Principles The Fourier Transformation Formula 2M 1 Fx 2 1 M Tk cos 2mK x M isin 2aK x M K 0 Tk The mapping data value for the Time Domain F x The mapping data value for the Freque
10. ell 5 1 4 13 poro avis mihol llel i ells 1 4 ogo Ex D 1 5 EL DOSDA Hes CS active high TI I 3n falling eda Dz C5 D1 SCL DU SDA H Hex E Parite check Hex Set Sampling Rate to 2Meals Defaut 1 Start bit 15top bit 8 data bit Baudrate 38400 bus Channel select sp os s s mf s 9 e 7 ef s 4f sl ol s of ox 21 36 29 26 27 28 25 2 23 22 21 20 19 1e 17 16 Edit channel 11 0 for Group Channel every Group Channel supports 16 Ch Max Could be display in Hex decimal binary Oct or Ascii code 13 Mnemonic edit Mnemonic setup Group select Giroup zxxxllzxxx xxxl xxx write xllzxxxx memF ead xllixzxxx menw rite x1111EEH Reset li S Bm S 0 RH E S 02 M 23 2 hBlNl R E R As figure Edit Mnemonic code for Groups Backup Color Windi Copy Al to M1 Copy Az to MI Backup Copy l to MZ Copy AZ to MZ Clear Al buffer Clear AY buffer Clear M1 buffer Clear MZ buffer Clear LA buffer Clear Buffer all Backup Analog Channel to M1 M2 channel Copy A1 to M1 Store channel A1 to M1 memory 1 Copy A1to M2 Store channel A1 to M2 memory 2 Copy A2to M1 Store channel A1 to M1 memory 1 Copy A2to M2 Store channel A1 to M2 memory 2 Channel Box AVES a3 a4 I Fi Probe Couple file F V div Offset Hi H2 EMI A different channel can be selected by hitting the A1 A2 A3 A4
11. er tiles search for driver files for the following hardware device c USB2 0 Device The wizard searches For suitable drivers in its driver database on your computer and in any of the following optional search locations that you specify To start the search click Nest IF you are searching on floppy disk or CD ROM drive insert the Floppy disk or CD before clicking Next Optional search locations Floppy disk drives CD ROM drives I Specify a location Microsott Windows Update c Back Cancel Click Next to continue Upgrade Device Driver Wizard X Insert the manufacturer s installation disk into the drive DE selected and then click OK if Cancel Copy manufacturer s files from F Adsa25218NU sb20D riverw in2000 XP Browse Edit or browse path to USB20driver win2000_XP gene inf here F is CD location dso25216 may be dso29xxA B Press OK 26 Upgrade Device Driver Wizard Driver Files Search Results The wizard has finished searching for driver files For pour hardware device The wizard found driver far the follawing device SP USB2 0 Device Windows found a driver that is closer match for this device than pour curent driver To install the driver Windows found click Nest l i i PAdsoeSe1 Bhusbetdriverswin2Q00_xp gene int Back Cancel Click Next to continue Digital Signature Not Found x The Microsoft digital signature affirme
12. erage of minimum and maximum voltages 1 samples sum each voltage each voltage 1 samples sum each voltage mean each voltage mean Average time for a full cycle for all full cycles in range Average time for a rising transition between the 10 to the 90 points Average time for a rising transition between the 20 to the 80 points Average time for a falling transition between the 10 to the 90 points Average time for a falling transition between the 20 to the 80 points Average width of positive pulses measured at 50 level Average width of negative pulses measured at 50 level Average frequency of waveform 22 EIE 20525kH2 EB 31 575x4 61 05KHz 105 838KHz anurce AT I3ain T ype Powerspectrum Points 1024 g DB div 120 DBm Window Hanning zoom 25 The FFT window allows control and display of FFT S The following controls are available Window Select the FFT window type Triangular Hanning Hamming Blackman Harris Rectangular Wetch and Parzen Sample points Select how many points the FFT will sample points can t exceed memory depth Horizontal zoom Select horizontal zoom ratio The FFT routines will process the selected channel starting at V1Bar and continue until Sample Points number of points has been reached If ViBar is not within the buffer start of buffer will be used Further information on FF T s can be found in the followi
13. erase all of the old data and will initiate a new Persistence Mode capture To turn Persistence On select Persistence from the View Menu To turn Persistence Off select Persistence again from the View Menu Note scroll zoom change display width or any update of the screen will erase all of the old data See also View menu Toolbar clear button Set cursor Bar V1 V2 Trigger Screen left or center for zoom operate reference Frequency Counter software Catch Function Channel Ctil F Measurements tle M Initialize Hardware Ctrl Channel mode Calibration Frequency counter Software catch Function Channel Measurements Initialize Hardware Counter resolution E Counter offset d To select 1 Ch 1Gsa s sampling or 2 Ch 500Msa s mode in DSO 50212 To select 2 Ch 1Gsa s sampling or 4 Ch 500Msa s mode in DSO 50412 1 Connect the scope probe Ground Connection to the BNC GND 2 Hold the probe s tip against the calibration point on the BNC center Hole 3 A Square wave signal should appear on the screen 4 Adjust the probe calibration until a true square wave is shown on the screen noting the corners of the waveform which should be sharp and square not rounded over or peaky Precision 7 digital resolution frequency counter for A1 A2 A3 A4 channel To capture data rate lower 500Sa s be used no Triggering To perform Channel Setup Measure Item This function al
14. i Wi RO m m t m 101 GW Wi D UN cx Th Tl m fo I Channels can be organized into groups and be displayed on screen in ASCII binary decimal hex decimal and user defined mnemonics Channels can be displayed in any sequence Time between Vibar V2bar and Trigger is displayed 24 USB driver install Windows 2000 USB driver install When USB2 0 control interface be connected to computer screen will display as following Found New Hardware Wizard i Welcome to the Found New Hardware Wizard This wizard helps you Install a device driver for hardware device To continue click Nest Back Cancel Click Next to continue Found New Hardware Wizard E Install Hardware Device Drivers device driver is a software program that enables a hardware device to work with an operating system This wizard will complete the installation for this device LI SBZ U Device device driver is software program that makes a hardware device work Windows needs driver files for your new device To locate driver Files and complete the installation click M ext What do you want the wizard to do f Search for suitable driver for my device recommended L Display a list of the known drivers for this device so that I can choose a specific driver Back Cancel 25 Click Next to continue Found NEW Hardware Wizard i Locate Driver Files Where do you want Windows to search for driv
15. ic Insert the disc that came with your USB2 0 Device If you have the disc that came with your device insert it now Windows will automatically search the disc for driver software Idon t have the disc Show me other options 31 Press Insert the disc that came with your USB2 0 Device Click Next to continue amp Windows can t verify the publisher of this driver software gt Don t install this driver software You should check your manufacturer s website for updated driver software for your device Install this driver software anyway Only install driver software obtained from your manufacturer s website or disc Unsigned software from other sources may harm your computer or steal information v See details S NIS TED runs eh X The software for this device has been successfully installed Windows has finished installing the driver software for this device USB2 0 Device ar Completing install 32 Technical Support Technical Support CLOCK COMPUTER CORP Je BAS AX ia PR 7F No 5 Lane 236 Section 5 Roosevelt Road Taipei 116 Taiwan Phone 886 2 29321685 29340273 29335954 Fax 886 2 29331687 Email ufclockc ms9 hinet net Software Updates Software can be downloaded from our website Web www clock link com tw Software copyright Clock Computer Corp 7F No 5 Lane 236 Section 5 Roosevelt Road Taipei 116 Taiwan All Right Reserve
16. lows you to restart DSO 11 Logic Menu Backup Color Mindo Losi Trigger word Ctl T search Logic data Ctrbes Group Edit Mnemonic Edit Trigger word Logic Trigger Setup e Parallel D ll 0 Update C I2C Dl 8CL DO SDA C SPI D2 C5 D1 SCL DO0 S3D OK Parallel Trigger D 15 8 D 7 Quality kxxx0000 11111114 W1 Bar Qualif xxxx OOOO 11111111 Quality xxxx d nD 11111111 i yO Huala xxxx OD 11111111 Group xxxxO0000 Er Groupi xxxx n FE Groupe xxxx0000 11111 laroup3 xxxx n 11111111 i A z i Set Trigger word for digital channel 11 0 or Group 0 3 The Trigger word backup four Qualify data and four Group data for quickly set digital trigger conveniently setup from V bars 12 Search data Search Logic data Option Search data by Groupo by bar C V2bar Groupl hy Groupe b i 15 03 xxxxxxxx Groups by gt Vibar data DD 00001001 Yabar data Trigger bar Backward Forward Sorting through all your data is easier with our search feature You can specify a search pattern including Don t Care bits in any shown numeric bases Then just click on the forward or backwards search to find what you are looking for Group edit Group edit Grund ebis i el 5l4l3 2 1 0 pew E 125is 13 12 11 10 9 8 7 JLo 5 14103 12 pero Group2 cl tis jue sv
17. mmand tells the DSO to start acquiring data when the trigger conditions are satisfied Pressed means Start capture un pressed means stop capture Moves one or more cursors to the display area These commands are also available by clicking on the toolbar BE Centers waveform display area around V1Bar BE Centers waveform display area around V2Bar BE Centers waveform display area around the Trigger Bar Moves Trigger Bar V1Bar and V2Bar onto the waveform display area Moves V1Bar onto the waveform display area IM Moves Trigger Bar onto the waveform display area Moves V2Bar onto the waveform display area im Moves H1Bar and H2Bar onto the waveform display area SET Automatic setup parameters for Trigger Channel E End Perform force stop for long time capture available 5KS s to 10S s sampling Rate File Menu Load settings Load Dala Imam Load Data Option nave pettings save Dala Dima save Channel Diata Text Transfer data to Excel View setup Logic Backup K Load Default settings w Auto Load settings Punt Exit LHR Load data Load data option Save setting Save data Transfer data to Excel Load setting Load Default Setting Auto Load Setting Print Screen Print FFT Print Timing View Exit This option loads a data file dso with a setting file ini together This option select of A1 A2 A3 A4 or DO D11 channel to be load This option saves the current settings to a setti
18. n also be set with the buttons on the left edge of the screen If the channel is on the button will be highlighted You can also turn on off transfer of the data for a channel Note This command applies to both analog and digital channels Adjust height of logic channel DO gt D11 For Timing display display Time like as 123 456ms or display how many samples Show or hide grid on analog display Dots connect off None checking this option will display only the data points of the analog waveform Logic data is unaffected by this option This is the second fastest display option Note that Lines will always be shown when in Sin X X or Filter Interpolation modes Dots connect on Checking this option will display the lines connecting the data points and the data points of the analog waveform Logic data is unaffected by this option This is the slowest display option Note The lines and dots can be set to different colors Compress and display the entire memory on the up screen Turns on or turns off Persistence Mode In this mode with each acquisition of data all previous waveform data remains on the display area This mode is useful for finding waveform anomalies that occur infrequently Persistence Mode is also useful for evaluating signal 10 Zoom align from Setup Menu Channel Hode Calibrate mu Logic Backup Color Window Help Test jitter Scroll zoom change display width or any update of the screen will
19. ncy Domain M FFT data length X The mapping data value for the Frequency Domain Imaginary number The result of the formula is a vector of complex number To show this on the screen we present the Frequency as horizontal coordinate we make the leftmost position representing zero frequency that is the direct current component Harris had pointed out that due to periodic characteristics of FF T we could observe the phenomena of discontinuation at the binderies of a finite length sequence Therefore when we select randomly a signal sample we could see points of discontinuation as a result of periodic expansion This would produce leakage of Frequency opectrum across the whole frequency band To suppress the amplitude of sample around the binderies we must apply Weight Function to it 34 discontinuation The Vertical Axis on the screen is expressed in terms of Magnitude Decibel db and Logarithm Magnitude Wins g RA skul Decibel db dom Ps 10 log Mn Mref 20 log Mn Mref Here Mref represents the reference value It is define as 0 dbm or 0 316 V Peak to Peak Value or Effective Value 0 244V It is define as 1 0 mW or it is defined as Resistance Value 50 Q Logarithm In this mode the display is expressed in decibel and the Measurement is expressed in Magnitude Generally speaking the Spectrum Processing System is expressed in the following formula N 1 Y k gt A n X k n n 0 This formula utilize
20. ng file ini This option saves a data file dso every time saves all A1 A2 A3 A4 DO D11 data depend on Depth setting This option will convert data to Microsoft Excel by Decimal Hexdecimal Ascii or unit v This option loads a previously Setting file ini Heset all parameters to factory defaults Turns on or turns off the Autoload option When this option is on all settings will be loaded when start the program This option allows you to print Screen Hard copy This option allows you to print FFT form This option allows you to print Main Screen Form Use this command to end your session You can also use the Close command on the application Control menu View Menu Tiew setup Logic Backup L status Bar Channel Display K Logic Ch Height d Croup Height d Time or Set d wv Grid display Ctrl G lt Hbar on off CH v Dots connect Cel D LOON view Cel Persistence LCP Refresh screen Ctl B zoom Alien from K Status Bar Channel display Channel Height Time and Samples Grid Dots connect Zoom view Persistence wv Display Time Dispay Samples Show or hide Status Bar When display is checked the channel will be displayed on the screen When display is not checked the channel will not be displayed on the screen Turning Display off for a channel will speed up the display However the data is still acquired from that channel unless transfer is turned off A channel s display ca
21. ng sources Embedded Systems Programming magazine Volume 3 Number 5 May 1990 Embedded Systems Programming magazine Volume 7 Number 9 Sept 1994 Embedded Systems Programming magazine Volume 7 Number 10 Oct 1994 Embedded Systems Programming magazine Volume 8 Number 1 Jan 1995 Embedded Systems Programming magazine Volume 8 Number 2 Feb 1995 Embedded Systems Programming magazine Volume 8 Number 5 May 1995 Circuit Cellar Ink The Computer Applications Journal Issue 52 Nov 1994 Circuit Cellar Ink The Computer Applications Journal Issue 61 Aug 1995 Dr Dobb s Journal Issue 227 Feb 1995 23 State List c Mnemonic BI ev function T Home End Page T Page Position D15 D0 Groupe aroup3 40 1428 00010100 al 41 1429 00010100 12 1524 00010101 Ay 1526 00010101 44 162C 00010110 45 1620 00010110 46 172E 00010111 47 72 00010111 48 1530 00071000 49 183 00011000 a 1832 00011001 Hi 1933 00011001 S 1434 00011010 Fa 1435 00011010 1B3B 00011011 1837 00011011 1038 00011100 1039 00011100 1034 00011101 1D3B 00011101 1E3C 00011110 1E3D 00011110 1F3E 00011111 1F3F 00011111 He 2040 00100000 Yri 204 00100000 write 2142 1010000 2143 1010000 2244 00100010 2245 00100010 mem P ead 2346 0100071 nil 2347 00100011 memw rite 2446 007007 00 2449 00100100 2906 00100101 2548 00100101 264C 00100110 00100110 LT cr cm cm Cn on F CT CT ID as CT Wi FJ C Th I I rr T
22. rdware Wizard The wizard has finished installing the software for 38 Lsb2 U Controller 5 Click Finish to close the wizard Back Finish Cancel Completing install Windows Vista USB driver install When USB2 0 control interface be connected to computer screen will display as following Found Mew Hardware x Windows needs to install driver software for your USB2 0 Device Locate and install driver software recommended Windows will guide you through the process of installing driver software for your device gt Ask me again later Windows will ask again the next time you plug in your device or log on Don t show this message again for this device Your device will not function until you install driver software Cancel Press Locate and install driver software recommended Continue Anyway 30 Allow Windows to search online for driver software for your USB2 0 Device gt Yes always search online recommended Windows will automatically search for the latest drivers and applications for your hardware and download them to your computer Yes search online this time only Windows will search for the latest drivers and applications for this device and download them to your computer 2 Don t search online Your device may not function properly until you get the latest software Please read Microsoft s privacy statement Press Continue Anyway HOD Mace JSB2 0 Dev
23. s Weighting function that is also known as Window For example Hanning Hamming Blackman Triangle and Rectangle These are further explained as following Hanning It is cos a 0 type window expressed mathematically as following a n 0 5 1 cos 27n N Hamming It is similar to Hanning The only difference is the coefficients for cosine term a n 0 54 0 46 cos 2 an N n 0O 1 2 N 1 Blackman It is the sum of a series of cosine terms It is equal to Weighting function a n gt 1 b m cos 2znm N n 0 1 2 N 1 35 Triangle Triangle Weighting Function It is define as following 2n N n 0 1 2 N 2 a n a N n n N 2 1 N 1 Rectangle Rectangle Weighting Function ML window coefficients FFT of window Triangle Weighting Function The Characteristics of Weight Function Window Highest Side Lobe 3db Bandwidth 5db Bandwidth Scallop Loss db bins bins Rectangle Functionality The functionality of FFT can be achieved through the use of Utility To use the Utility We must set Channel Math first and then turn on FFT or Bw sweep We have to Bear that in mind that we could only analyze one channel at a time After finish all the settings we could see the screen showing FFT Channel We describe the differences between FFT and Bw sweep as follow 36 FFT If we are using this mode we are analyzing Channel A1 or Channel A2 in an Real Time Mode To achieve the state of S
24. s and an attached alligator clip for the signal ground connection The Logic Analyzer Pod has inputs for 12 channels DO channel is the external clock input and 8 ground points For synchronous data captures external clock sources can be connected to the DO channel At times it may also be necessary to connect the test circuit to the computer system itself This will eliminate more noise in the test application due to ground level differentials This is especially true when dealing with high speed timing analysis Use a heavy gauge wire to make a connection between the test circuit ground and the case of the computer Each Analog channel probe has a calibration adjustment It is important that this calibration be made at least twice a year See Calibration for more information When connecting the probes to any signal make sure that the signal voltage is Within the limits of the DSO check the technical information section for absolute maximum and recommended maximum input voltages for the probes Logic Analyzer Pod Markings DO D11 Channel data inputs GND Signal ground connection a Main Screen File View setup Logic Backup Color Window Help Test ESI a2 55 almaz rif Probe 10 1 sous BB N INNINNNNAANA Trigger position fer vier Scr Couple fs Vidiv Hi H2 s00my Capture Marmal a Trigch EX Level 1 m J TrigType BM EE Slope 14 Pulse TY Pulse TV NTSC Tu PAL B25 S i i a
25. so50x12 exe e Follow the on screen instructions Feature e Innovative cross triggering logic analyzer channels can trigger the analog channels and vice versa e Long time pre triggering up to 262143 256 points about 67M points Fast data capture and screen update rates e Hot key function that is convenient to use e Deep 512K 2M sample data acquisition buffers on each channel A1 A2 A3 A4 DO D11 Precision 200MHz Frequency counter up to 7 digital resolution 512K memory for each analog channel e Advance Fast Fourier Transformations function to Bandwidth test e Support Pulse width and TV NTSC525 PAL625 Triggering and count e Support high speed up to 50MHz SCL clock PC SPI Triggering e Support IG SPI UART more serial bus timing encode e Convenient Timing state display for logic debug Guide to Operations When making measurements with the Digital Storage Oscilloscope Logic Analyzer Cards meaningful data can only be captured with some prior knowledge of the characteristics of the circuit under test Before initiating any capture cycles the DSO must be configured using the control program oee the software section later in the manual for instructions on these procedures To connect the DSO to the test circuit there are two standard BNC probes one for each Analog input channel and a series of mini clips on the Logic Analyzer Pod for the Logic Input channels The scope probes have removable hook clips on their end
26. t driver in these locations Use the check boxes below to limit or expand the default search which includes local paths and removable media The best driver found will be installed Search removable media floppy CD ROM Include this location in the search E Adso25216 Usb20DriverWin20D0 XP v C3 Dont search I will choose the driver to install Choose this option to select the device driver from list Windows does not guarantee that the driver you choose will be the best match for your hardware Edit or browse path to USB20driver win2000_XP gene inf here E is CD location dso25216 may be dso29xxA B Click Next to continue Please wait while the wizard installs the software Hardware Installation AN The software you are installing for this hardware Usb2 0 Controller 5 Er ze Usb2 0 Controller 5 has not passed Windows Logo testing to verify its compatibility with Windows XP Tell me why this testing is important po Continuing your installation of this software may impair or destabilize the correct operation of your system either immediately or in the future Microsoft strongly recommends that you stop this installation now and contact the hardware vendor for software that has passed Windows Logo testing Continue Anyway STUP Installation Press Continue Anyway 29 Found Mew Hardware Wizar d Completing the Found New Ha
27. tab nput Impedance 1Mohm 15pF Max input voltage 50v 100v Transient BNC connect Probe 1 1 nput Sensitivit ertical Accurac rigger Sensitivit riager Level 10 Vertical Divisions lope Pulse width TV NTSC PAL Trigger Type d S vci dig id Mand i Pulse detect lt 16ns min igital Channel DO D11 12ch nput Bandwidth 150MHz max nout Impedance 100K ohm 2pF lent Logic Pod nput Sensitivity hannel skew Max Input Voltage 50v 100v Transient hreshold Voltage by 32mv step Parallel 0 1 X don t care settings for all Digital channels PC 0 1 X don t care settings for 4 bytes Ack long SPI 0 1 X don t care settings for 36bit long operate Mouse ower Suppl ower consumption Total 7 2W C Interface et Weight ize Dimension 220mm x142mm x 40mm Aluminum Case Logic Analyzer pod USB 2 0 cable Calibrated Probe 300MHz 1 1 10 1 x 2 pcs User s Manual Software CD Housing with Color wires amp clips x 16 pcs DC Adapter 12V 1 0A Accessories DSO 50412 Hardware Specifications Record Length 2MB Ch Healtime from 10Sa s to 1GSa s Ch A1 Ch A3 1Sa s to 1Gsa s Sampling Rate Ch A2 Ch A4 1Sa s to 500MSa s software catch from 1Sa s to 200Sa s DO D11 1Sa s to 500MSa s not support for Ch A3 Ch A4 External clock 1 KHz to 50MHz max From Logic Channel DO Timebase Accuracy BUDD 1 Analog Channel Ch A1 Ch A2 Ch A3 Ch A4 abit resolution Ch
28. that software has been tested with Windows and that the software has not been altered since it was tested The software you are about to install does not contain Microsoft digital signature Therefore there is no guarantee that this software works correctly with Windows Usb2 0 Controller 5 IF you want to search For Microsoft digitally signed software visit the Windows Update Web site at http windowsupdate microsoft com to see if one is available Do you want to continue the installation Mo More Info Click Yes to continue 2 Found New Hardware Wizard Completing install Completing the Found New Hardware Wizard gt Usb2 0 Controller 5 Windows has finished installing the software for this device To close this wizard click Finish Back Lancel Windows XP USB driver install When USB2 0 control interface be connected to computer screen will display as following Found Mew Hardware Wizard Click Next to continue Welcome to the Found New Hardware Wizard This wizard helps vou install software for USB2 0 Device r If your hardware came with an installation CD ar floppy disk insert il now What do vou want the wizard to do C3 Install the software automatically Recommended G Install fram list or specific location Advanced Click Hest ta continue 28 Found New Hardware Wizard Please choose your search and installation options e Search for the bes
29. tude we can use Ctrl or Alt key plus Up or Down key After that we can get the data displayed in the rectangle frame of FFT parameter Notes It is highly desirable to confirm the following items before doing analyzing 1 ES 3 If the measurement is for low frequency we ought to make sure the frequency of the sample is not too large Since the larger the frequency of the sample the large the Band Width The sample frequency needs to be as twice as large as the frequency to be measured It is undersirable to use Logic Analyzer and FFT simultaneously It is desireable to have waveform on the Time Domain The stronger the waveform the better the accuracy of the results To obtain the highest speed on FFT we could turn all the channels off except for FFT The values of Depth can be 4K 64K When using 4K we are using the real part and Imaginary part of the integer results of the Simulater Output for independent Probability Noise Signal The MSE calculation results is obtained using 16 bits FFT processor with db less than 75 DB If using db value greater than 75 DB we are going to get too great an inaccuracy When we are using 64K Depth we are doing floating point calculation therefore the machine we use must have floating point math coprocessor 38
30. w is also known as Weighting function it includes Hanning a fixed value generally is peaking Hamming Blackman Triangle and Rectangle Please refer to the Fundamental Principle of this article Due to periodic characteristics of FFT we observe the discontinuation phenomena around the boundaries of the finite length sequence We must use Window to suppress the amplitude of the sample around the boundaries Gain Type The Vertical Axis on the screen is expressed in terms of magnitude Power Spectrum and Logarithm 1 Magnitude The magnitude of the Polar Coordinates on the screen 2 Logarithm in this mode it display Power spectrum and the measurement is expressed as Magnitude 37 3 Power Spectrum By formula Ps 20 log Mn Mref Here Mref represents the Reference Value of 0 316V It is defined as 0 dbm 0 316V p p or 0 244 V Effective Value also known as 1 0mW and the Resistance of 50 Q The Vertical Axis on the screen is expressed in terms of Magnitude db or Logarithm These are explained as following DB div ltis active only when Gain Type is set to Power spectrum It is the unit of the Vertical coordinate It represents DBm There are four different scales 5 10 20 50 DBm DB offset It is active only when Gain Type is set to Power spectrum It can change the position of FFT to make it going up and down To obtain the measured data using Ctrl and Alt keys plus Left or Right key to measure Frequency To measure Magni
31. y factor in Volts division for the selected analog channel Each V div step follows in a 1 2 5 sequence To get the best representation of the input signal set V div such that the maximum amplitude swing is displayed on the screen This will match the signal amplitude to use most of the digitizer s range allowing the most bits to be used Volts division can be set via the V div Combo to Settings Volts division Probe can be set to 5mV 10mV 20mV 50mV 100mV 200mV 500mV 1V 2V 1 1 50mV 100mV 200mV 500mV 1V 2V 5V 10V 20V 10 1 500mV 1V 2V 5V 10V 20V 50V 100V 200V 100 1 5V 10V 20V 50V 100V 200V 500V 1000V 2000V 1000 1 Offset This parameter offsets the input signal in relation to the digitizer This changes the usable input voltage range The input voltage range is the offset 5 divisions Thus if you moved the offset to 1 00V with 1V division the usable range would be 6 00V to 4 00V Data outside the input range is clipped and stored as either the max or min input value The offset references the 0 00V point GND for the input channel The ground point is marked on the screen by the Ground Point Tick Marks to the right of the Analog Display To change the offset in this dialog box move the elevator button in the scroll bar The offset can also be changed by grabbing and moving the appropriate Ground Point Tick Mark in the analog display area 17 Trigger Box Trigch E3 Triglype MESIRE a
32. ynchronized Display We are measuring time Domain while we are displaying Fourier Frequency Domain In addition to that we are able to analyze the stored signal easily We only need to read the file on A1 Channel or A2 Channel and then thrown on FFT Whether we turn on Go or not is the difference in retreiving signals Bw Sweep When turning on this mode we are analyzing A1 Channel or A2 Channel through the Frequency Sweep Mode to achieve the State of Frequency Output The user must apply additional frequency to the point of measurement Also we have to increase the frequency from small to large gradually The finer the increment of frenquency the better the obtained data will be Attention must be made to clear the Frequency and record Sweep Frequency again every time when we turn on Go to retreive signal When a user set the Mode he can also set the FFT parameters These are the required settings and they are explained as following Source From channel A1 A2 M1 or M2 Points The points to be used are 256 512 1024 2048 4096 8192 16384 and 33678 The user could think of these points as the scope of period It can be understood that the more points we are taking the better the results will be except the speed of it would be sacrificed This is because the more you analyze the more time it takes to get the job done It is an user s responsibility to make a judgment as to how a compromise should be achieved Window The windo
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