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Sandwich Box Mk3 - Verif-i

1. E Sandwich Box 303 gj Sandwich Box v303 Manual k Scan Business Advantage J SIRF 4 Back Search programs and fi les p Note that shortcuts can be made by right clicking Sandwich Box 303 and selecting one of the highlighted lines from the sub menus as shown below Open 4 Run as administrator JKI k Maintenance di Microsoft Office Microsoft Silverlight k Microsoft Works k National Instruments d Norton Internet Security PerformanceTest 64 bit k Pico Technology Samsung Magician Jh Sandwich Box 202c Sandwich Box 203 Sandwich Box 300b 1 Sandwich Box 300c Sandwich Box 301 ID Sandwich Box 302 ID Sandwich Box 303 B Sandwich Box 303 Sandwich Box v303 Manual k Scan Business Advantage SIRF 1 SketchUp 2015 4 Back Troubleshoot compatibility Open file location Norton Internet Security Add to archive Add to Sandwich Box 303 rar Compress and email Compress to Sandwich Box 303 rar and email Pin to Taskbar Pin to Start Menu Restore previous versions Send to Cut Copy Delete Rename Norton File Insight Properties Help and Support Shut down mm Ge The USB ports are scanned and if a device is found it will be software 22 identified by the Sandwich Box Mk3 Serial number 501 found Full functionality available Clicking Continue establishes connection with the displayed Sandwich Box and enables the hardware to be used for data acquisition
2. Note that accelerometers are manufactured from piezoelectric crystal and can be damaged by high accelerations for example if they are allowed to drop onto a structure with a click Accelerometers should be placed on the Structures one corner first then gently rolled on to it to avoid making a clicking sound The magnets should be removed from the accelerometers when not in use to prevent the accelerometers becoming magnetised and affecting the sensitivity To acquire accelerometer test data both accelerometers should be mounted side by side on the mass as this generally has less amplitude and phase variation from point to point than the baseplate The vibrator should then be swept and the data acquired by the Sandwich Box using the Acquire module and saved The accelerometer test data may then be processed using the accelerometer test module Alternatively the Sandwich Box accelerometer signals can be compared with the vibrator electronics accelerometer signal if these are recorded on the Sandwich Box There is a special section in the processing parameters to select the channels to be compared in the accelerometer test Select the Sandwich Box file to process see Folder and File Selection section of this manual The accelerometer test module then compares the amplitude and phase of the selected accelerometer channels and produces the following display 49 T Accelerometer Test e mg PAA ES 24 EE F m s AL
3. 40 0 60 0 a ii i 10 5 0 I l l l l I 100 a 10 12 20 30 40 0 60 70 T8 2nd Harmonic Total 7 12000 7 BOx Force daN ard Harmonic FAN Odd ESEJ 15000 4th Harmonic FAN Even Paw 14000 Sth Harmonic Sub 12000 6th Harmonic Total 10000 7th Harmonic Fund 8000 o Red cursors on the Correlation Wavelet Phase and Peak Amplitude plots represent specifications entered by the user in the processing parameters module Blue cursors represent the Zero axis for Correlation Wavelet and Phase plots and the Target Peak Force for the Peak Amplitude plot The black line on the Distortion graph is the total distortion of the vibrator The red line is the distortion caused by the odd harmonics 3 5 and 7 and the green line is the distortion caused by the even harmonics 2 4 and 6 The blue line represents the sub harmonic distortion i e any energy that occurs below half the fundamental frequency The black plot on the Peak Amplitude graph shows the envelope of the raw force signal while the blue plot shows the peak level of the fundamental force signal Statistics The third tab contains a statistical breakdown of the sweep in either half or one second segments depending on the sweep length 52 P AAJEEJ ta rL LZEJEJF M EJ HL RESET SELF TEST PARAMS CHE SWE MONITOR ACQUIRE ACC TEST PROCESS FUITINE HEADER SANE FRINT RESULTS EMIT Frequency Statisties Close A
4. Force Peak Amplitude maximum 65000 Peak Amplitude minimum 20000 The phase plot may be inverted to plot either a phase lead or phase lag as positive This enables the display to match the results from other systems as there is no standard for how the phase should be displayed A positive phase lag means that the Data trace lags the Correlation Reference WEJ ULLA o BED ZS TEST PNET STANN Toe POGUBI pee TEST Time Frequency Statistics Close Up Time frequency Statistics Chose Up Frequency Hz Amplitude dB Distortion Wavelet Wavekt g Pase Harmonica dB Force Mass BP Phase Maes Force Frequency Hz ampitude dB Orstertion l wave wawe et dg Phase Harmonics a8 Force Masz BP Phase Mass Force NYSY ZA aS T The same phase plot plotted with phase lag left and phase lead right plotted as positive Signals The signals page contains a single plot showing the time series of all signals saved in the Sandwich Box file The plots are normalised so that each signal fills the same amount of space on the graph without overlapping 58 Results c NAN esl cre BES ad m RL RESET SELF TEST PARAMS CHR SIN MONITOR ACOWKE ACC TEST PROCESS KIULTIHE HEADER SAYE PRINT RESULTS EIT Time Frequency Statistics Close Up Scale Signals Normalised Input Signals w Time ms Baseplate KUL DSD Mass Acc so rores WJ
5. l l l l l I l l I l I l l l l l l I l l 0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 7000 7500 6000 500 9000 9500 9999 Results Clicking the Results icon opens a window containing all plots formatted for printing on a portrait oriented page The user can rescale the plots prior to printing if required Plots can be rescaled by highlighting the first or last value on the X or Y axes and typing in a new value or else by editing the values on the Scale tab of the Processing module and reprocessing the file Note that the results icon is only available from within the results module 59 Print Results PRINT RETAIN BIT Vibrator Sweep Analysis Comments Test Data Test_003 vfs Processed on 4th July 2014 at 10 52 06 am Recorded on 14th May 14 at 3 37 20 pm Hold Down daN Drive Level Mass kg Low Freq Hz Timing Error us 17600 20 4082 12 T99 Peak Force daN Target Force daN Baseplate kg High Freq Hz Force Tolerance 27600 12672 1800 79 20 SW Box Force dal wl L im NN a SZA z I I I I I I I 4 5 6 T 8 9 10 Frequency Hz v Time z Amplitude dB w Frequency Hz Total Distortion v Time z a 0 10 20 I u I p I 30 I I I I I I I M I I I I I I I I I I 4 6 8 9 10 0 10 20 30 40 50 60 70 8086 0 12 3 4 5 6 fF 6 8 10 Correlation Wavelet w Time ms Correlation Wavelet dB vw Time 5 Phase Lead Degrees 1 0 0 15 10 0 40 10 14 G0
6. 107 4 89 107 0 018 817 542 1077 0 004 822 5 39 107 0 0 041 818 540 1076 0 014 818 5 39 1079 pec 1 000 80 0 5 30 90 0 T c 1 2 3 4 5 6 7 8 S NI II III IJ i il MM MN Ii UI il JI it ili N LJ NU WWW IWAN NW NN Hi Record Length s Sample Interval ms 4 1 Save Results and Data Don t Save Yy Results Summary s wd wdowi I I I I I I I 0 250 500 750 1000 1250 1500 1750 2000 2250 2500 2750 3000 3250 3500 3750 4000 Fail 2 The test data and or screen dumps of the Individual tests can be saved using the Save Results and Data control on the screen this control is duplicated on the Acquisition Parameters tab A test failure may be caused for a number of reasons firstly ensure that the front panel input connectors are removed If a failure persists try cycling power on the hardware and repeating the test The saved data files can be processed using instrument test analysis software such as Testif i Note that the distortion figure is limited by the quality of the internal test signal generator 29 Parameters selecting the Parameters icon allows the operator to view and modify all of the parameters used by the programme All parameters used by the programme are listed on the four tabs although some of the parameters can also be accessed in other places Load Defaults Clicking th
7. 40 0 0 A 0 4 I I I I 50 I I I I 10 I I I I I I I 100 50 0 50 100 10 5 0 5 10 12 20 30 40 50 60 70 76 Harmonic Amplitude dB v Time z Harmonics Distortion Peak Amplitude daN v Time s 2nd Total 18000 3rd PATA Odd PT 16000 dth FAW Ewen fw 14000 Sth roya Sub A 12000 eth A7 Fone 10000 Raw As zoc Tth Fafi TI I I I I I Fund ANA 0 2 4 6 8 10 Frequency Hz w Time 3 1000 900 a00 T00 600 dB down on peak 0 l 0 1 2 3 4 5 6 T 8 3 10 Processed by Sandwich Box software version 3 00 Recorded by serial number 400 using software 3 00 Verif i Ltd When the Print Results data is printed vibrator statistics are also printed on a separate page or saved in a separate graphics file using the same graphics format and file name as the plot but with a suffix stat 62 A Test Data Test_003 vfs Processed on 2nd July 2014 at 9 41 47 am ded on 14th May 14 at 3 37 20 pm Hold Down daN Drive Level Mass kq Low Freq Hz Timing Error us 17600 80 4082 12 2 3 Peak Force daN Target Force daN Bazeplate kg High Freq Hz 27600 12672 1800 79 Fen Avg Max Min Awg Max in Avg Max Min pam ee 0 0 to 0 5 0 5 to 1 0 1 0 to 1 5 1 5 to 2 0 2 0 to 2 5 2 5 to 3 0 3 0 to 3 5 3 5 to 4 0 4 0 to 4 5 4 5 to 5 0 5 0 to 5 5 5 5 106 0 0 173 14144 14872 1 7 6 0t06 5 0 118 14097 13755 1 9 7 0
8. 47 a EE Data From Sandwich Bo PAY SA CO ae ale A RESET RA El bt MONITOR ACQUIRE AGC TEST PROCESS MULTIVIB HEADER SAVE PRINT EKIT Input Signals w Time ms Baseplate Mass Channel 3 Vib Reference Timebreak Channel T Channel 8 l I I I I I I I I I I l l I l l I 0 500 1000 1500 2000 2500 3000 3500 4000 4500 3000 5500 6000 6500 7000 7500 6000 Gain Level Turn Up B OK Y Turn Down YF Overscale Overload Record length is 8 seconds When the acquisition is complete the data is saved in temporary files in the user s application data folder lf one of the Autosave options has been selected in the Acquisition Parameters tab then the data will be copied to the user selected Data Folder in the format selected in the File Format control If Autosave is not being used then the user can manually save the data by clicking the Save icon this lets the user add a comment and change the first part of the file name Once the data has been saved to the hard disk it can be processed using one of the processing modules 48 Accelerometer Test This test is designed to check the phase and amplitude response of the accelerometers by comparing them with each other It is recommended that this be performed each time the unit is set up as it verifies that the accelerometers have been connected correctly and the correct accelerometer sensitivities have been entered in the channel allocation parameters
9. T PARAMS SETGAIN MONITOR ACOUIRE ACCTEST PROCESS PIULTIWIE HEADER SAVE PRINT EIT Waiting for Trigger Acquire Data Signal Level mV Channel No Channel Name 0 01 T Timebreak Trigger 3 6 l l I l l l I l l l I l l l I l l I l 0 50 100 150 200 250 300 350 400 450 300 550 600 650 700 750 650 900 950 1000 In this condition the A D converters are free running and acquisition will start of the first sample after the threshold voltage is reached Note that subsequent recordings will not necessarily start at exactly the same time resulting in jitter between records however all signals within each record are sampled at exactly the same time The Trigger button can be used to initiate a record start irrespective of the threshold level lf a digital TTL trigger is selected than the A D convertors are switched off until the trigger signal is received at which time the converters are all started Owing to the digital filters used by the system there is a delay of around 32 samples before the first valid data is received at the output of the filter The first valid sample is duplicated 31 times to pad the record so that it starts as close as possible to the correct time although there is no useful data in the first 31 samples The residual timing delay caused by the timing delay not 46 being precisely equal to an integer number of sample intervals is recorded in the Sample Skew field of the output record so that the t
10. 0 Accelerometer Test Timebreak Reference Trace Baseplate Vib Reference Data trace Mass DSD Reference Start Time Calculation DSD BP Acc Reference Trace Vib Reference DSD Mass Acc Data trace DSD Reference DSD Force Each acceleration and force signal has a weighting control which can be used to generate a new force signal using a combination of any of the recorded signals The user should enter a percentage weighting for each of the recorded accelerometer and force signals The acceleration signals are automatically multiplied by the mass of the appropriate structure mass or baseplate as selected in the Channel Allocation parameters when the data was recorded Note that the sum of the weightings for all of the accelerometers connected to each of the mass and baseplate structures or force signals should equal 100 aS in the example shown above The user is responsible for ensuring that this is done correctly Sweep Controller This tab lists the specifications and channels used by the various processing modules in the software package 41 PEN cu CL EAC EY Gm eet BL noadpetuts Save Detauts Cancel changes RESET SELFTEST PARAMS HRS WP MOKIT R ACQUIRE ACC TEST PROCESS PNLTIMIB HEADER SAVE PRINT EKIT Acquisition Parameters Processing Parameters Sweep Controller Vibrator Parameters Vibrator Electronics Baseplate 1560 Units kg ma Controller Type Sercel ma Mas
11. 100 115 M Phase Lag Degrees Processed by Sandwich Box software 3 00 Recorded by serial number 400 using software 3 00 Verif i Ltd Individual sweeps can be highlighted by right clicking one of the traces in the legend and selecting enhancements such as line style colour and thickness interactively 66 View Edit Header This module allows the user to view data recorded in the Sandwich Box data header This includes vibrator parameters channel allocation values and user comments Header Edit eo a AAJEEJ amp cl LEE A SL a RESET SELFTEST PARAMS CHR SWE MONITOR ACOUIRE ACE TEST PROCESS FINLTIVIE HEADER SAVE PRINT EIT po noes Date Recorded Recorded on 11th April 15 at 10 07 28 am File Name CAsoftware Sandwich Box SWB Example Data Copy vfs Sample int ms Record Len s Target daN Software Hardware Trigger Type Trig Level mV Trigger Channel 1 12 18494 3 00 501 l Threshold 100 4 Hold down daN Pk force daN Drive Baseplate kg Mass kg System Pre Trig Delay Non linear Boost 27799 27398 5 75 1560 4082 Sercel 100 1 2 Start Freg Hz EndFreqfHz Sw Length s Start Taper ms End Taper ms Taper Type Start Pha deg Sweep Type 8 96 12 300 Blackman e 0 dB per oct iw User comments Channel descriptors Example Sandwich Box Mk3 acquisition Chan Description Acc w Sens Struct Weighting Input Type Signal Beseplete On 301 ee wox Mass O
12. 23 VES File When launching the Process Accelerometer Test or Header Edit modules a table is displayed listing all the Sandwich Box files in the currently selected data folder Click on a file to process File name Date Recorded Time Length User Comments Teso athMay na aazispm 10 maoe SSCS Tests mmya sa720gm _ Test 002 i 39 Test_001 p Busy Reverse List Order The table shows the filename some details from the file header and the comments entered by the user at the time the file was saved The user should select the file to be used by clicking anywhere in the appropriate row in the table 20 Note that the Sandwich Box files in the folder are listed in the order that they were recorded signified by the last three digits of the file name The first recorded file will aopear at the top of the list and the most recent file at the bottom The order of the list can be reversed by clicking the Reverse List Order radio button This causes the most recently acquired file to appear at the top of the list next time the list is read from disk as shown above The window can be resized to show more records Should the user wish to select files from a different folder pressing the Change Folder button will allow the user to interactively select a different data folder If a new data folder is selected then subsequently acquired data will be saved in the new folder When a record is processed the channel nam
13. Channel 8 Channel8 Channel 9 SW Box Force Note This configuration has no polarity check no start time error calculation and the digital trigger cannot be used Accelerometer sensitivities should be taken from the supplied calibration sheets 78 Normal With Recording Truck Reference imilari Mass Acc Reference Sandwich Box a 06 w H H gt Fv es co A ae a RESET SELF TEST PARAMS CHKSWP MONITOR ACQUIRE ACCTEST PROCESS MULTIVIB HEADER SAVE PRINT ERIT Acquisition Parameters Channel Allocation Processing Parameters Sweep Controller Channel Allocation Force Channel Name Mounted Sensitivity Weighting Maximum 16 characters On mV g 31 50 32 10 Channel1 Baseplate Channel2 Mass Channel3 Vib Reference Channel 4 Vib Similarity Channel 5 Truck Reference Channel6 Timebreak Channel Channel7 FEE EEE EE E E el e kl kl Channel8 Channel Channel 9 SW Box Force Configuration of the unused channels 7 and 8 in this case is unimportant Vibrator polarity can be established by performing tap tests on the Sandwich Box accelerometers and making records on the recording system then recording a vibrator sweep using the Force Out cable to connect the signals to the seismic recording instrument Comparing the Truck and Vibrator reference sweeps allows the Sandwich Box software to calculate the vibrator start time error 79 Normal With Recor
14. Clicking the Check Again button searches for a different Sandwich Box connected to the PC lf a Sandwich Box Mk3 acquisition unit is not detected then a warning message is displayed The software can still be used to process previously acquired data but the Sandwich Box hardware cannot be used Please see the fault finding section of the manual for details of how to address this problem Sandwich Box Mk2 Serial number 240 found No further devices found A Mkz Sandwich Box is connected Mk3 software can be used for processing only software can be used for processing only To acquire data with the Mke Sandwich Box Please use version 2 xx software obtainable from www verif com Clicking the Check Again button initiates another scan of the USB ports while clicking the Continue button allows the software to be used process previously acquired data 23 Folder and File Selection All Sandwich Box data is saved and read from a user selectable folder The default location of this folder is the users Documents folder but this can be changed in the acquisition parameters as shown below or when manually saving a record AFV p SZ iff L fi a r RL Load Defaults Save Defaults Cancel Changes RESET SELFTEST PARAMS HRS WP AONITOR ACQUIRE ACE TEST PROCESS FIUITIWIE HEADER SAYE PRINT Acquisition Parameters Processing Parameters Sweep Controller Acquisition Save Options Trigger Type or Threshold a Chang
15. DSDs The voltages on the Output front panel connectors are differential The user should avoid grounding either the positive or negative output pins e g when connecting to an oscilloscope input The polarities of all outputs are now the same as the inputs The unit can record data synchronously when triggered by a hardware signal The maximum input voltage has been increased to 15 V so reference signals from Pelton vibrator electronics do not require attenuation Software Installation The software runs on Vista Windows 7 and Windows 8 Drivers are provided for both 32 and 64 bit versions Note that Administrator rights are required to install the programme and drivers The software is contained on a CD supplied with the Sandwich Box or can be downloaded free by users of Sandwich Box hardware from Verif i s website www verif i com upgrades The software is installed by running Setup exe from the Sandwich Box USB folder on the distribution CD or from the unzipped file downloaded from the website The first thing that the software installation does is to load the National Instruments runtime engine which is required to run the Sandwich Box software The user must accept the terms of the licence agreement to continue Kaj Sandwich Bax 303 License Agreement Tou must accept the licenses displayed below to proceed NATIONAL INSTRUMENTS SOFTWARE LICENSE AGREEMENT INSTALLATION NOTICE THIS Is A CONTRACT BEFORE YOU DOWNLOAD THE SOFTWARE
16. Test Data Test_003 vfs Processed on ist July 2014 at 2 51 05 pm Recorded on 14th May 14 at 3 37 20 pm Hold Down daN Drive Lewel Mass kg Low Freq Hz Sample Interval ms 17600 80 4082 12 05 Peak Force daN Target Force da Baseplate kg High Freq Hz Timing Error uz 2760 12672 1800 T9 2 3 7 sr 3 20 9 9 5 to 10 0 5 ae s ao aa E 10 4 or A ae 0 0 Also shown are the vibrator and sweep parameters together with a start time error calculated from start time Data and Reference traces This Window has a vertical scroll bar to allow the user to scroll down the table or the Window can be resized Close Up Plots General selecting the Close Up tab allows the user to view the plots individually on a larger scale The individual plots also contain a grid and a cursor to enable the user to take direct measurements from the graphs Numerical results of the plotted data may also be saved to a spreadsheet compatible CSV comma separated value format 53 PN Es a co fl nl RL SELFTEST PARAMS CHR SWE MONITOR ACONIRE ACC TEST PROCESS KIULTIWME HEADER SAVE FKINT RESULTS EMIT setce Close Up sel NAMI uaa E E ALLT OLET LLULL ET z mi 4 LLL sg The indicator below the plot shows the X and Y coordinates of the cursor The cursor may be dragged to any position on the plot and will stick to the nearest graph when released Ii the cursor is not visible right cli
17. Test System version 3 03 Please choose a function from the toolbar above Press Ctrl H at any time for interactive help VERIF Z Copyright 1998 2015 All Rights Reserved Software version 3 03 The processing and display modules can be used as normal 18 Deliverables The Sandwich Box is supplied complete with the following parts item Qty Description 1 Sandwich Box acquisition unit 1 100 240 V power supply c w mains cable and connector 1 USB cable to PC 1 4 channel breakout box with karabiner for attaching to vibrator 1 25 metre cable connecting Sandwich Box to breakout box 1 Timebreak Reference cable to sweep generator 2 Accelerometer with magnetic mount 3 Accelerometer to breakout box cables spare not shown 2 Vibrator electronics to breakout box BNC coaxial cable 1 Force Output cable 1 CD containing software 1 Printed user manual O O NOOTRO ND The picture above shows how the cables are typically connected to the Sandwich Box In use the Sandwich Box acquisition unit may be placed in the recording truck with the single multi way cable 5 run out to the vibrator under test The cable is connected to a break out box 4 which can be attached to a 19 convenient part of the vibrator using the supplied karabiner Up to four signals from the vibrator can be connected to the break out box typically two accelerometers vibrator reference and timebreak or force output Ideally the correlation reference
18. first line of user comments or the first 40 characters if shorter is displayed in the User Comments indicator After a sweep has been processed the user has six options 1 Add data from another sweep using the Next Vib icon The next sweep will be plotted in a different colour on the plots Delete the last sweep added using the Delete icon Delete all currently displayed sweeps using the Clear icon Print the currently displayed data to a printer or graphics file OT R O ND Return to the main menu leaving the multi sweep analysis window open using the Retain icon 6 Close the multi sweep analysis window and return to the main menu using the Exit icon 65 M mi Vib Processing BE leo ji ttt mm m im TNA Multi Sweep Analysis ZA i MAL Sandwich _Box_Test_Data Sweep 2 ZSR Processed on 2nd July 2014 at 9 50 42 am z gt ra v Plot Visible Sw Recorded on 1st April 05 at 12 00 00 pm eep3 common Plots Sweep 4 ou User Comments Hold Down daN Peak Force daN Color d UFE a 16910 21360 OWE M vib 4 Line Width PFE Drive Level Target Force daN Ani Alssed vib 1 First sweep on new 80 13528 ground Bar Plots Mass kg Low Freq Hz Fil Base Line p 3039 11 Interpolation jp m Point Style boo u Baseplate kg High Freq Hz _ fs 104 EE gt Y Scale b itude dB w Frequ Hz R dB v Frequency Hz Ext 10 A 30 I I l I I l 0 20 40 60 80
19. is padded with data equal to the first valid sample As the filter delay is not an integer number of samples the residual 31 timing error is encoded and written in the Sample Skew byte in the trace headers Trigger Level mV When using a threshold voltage as the acquisition trigger this control sets the amplitude of the threshold in millivolts to initiate an acquisition If a Digital Signal is used as the trigger then this control is disabled Trigger Channel When using a threshold voltage as the acquisition trigger this control selects the channel to monitor Ideally the trigger channel should be a timebreak signal but if this is not available a reference sweep makes a good alternative lf a Digital Signal is used as the trigger then this display is disabled Acquisition Length s The Acquisition Length is the length of time in decimal seconds for which data will be acquired after the trigger threshold is reached This time will normally be equal to the sweep length The maximum record length is 128 seconds limited by the SEG D format Pre trigger Delay ms The pre trigger delay can be used to acquire data before the trigger threshold is reached The record length starts at the time the first sample is recorded which may be before the start of the sweep This may be of use when long tapers are being used and a timebreak signal is not available for use as a trigger This control is disabled when using a Digital Signal as the tr
20. other pointing devices p lls Monitors gt MGF Network adapters J Ports COM amp LPT A Communications Port COM1 b Sound video and game controllers p lt gt Storage controllers gt gli System devices a F Universal Serial Bus controllers F Standard Enhanced PCI to USB Host Controller F Standard OpenHCD USB Host Controller J USB Root Hub F USE Root Hub aI I I IUM Imo ee When the Serial Converter driver is listed in the device manager the Sandwich Box hardware is ready for use Use Without Drivers lf a PC is to be used to process files previously recorded Sandwich Box files the driver does not need to be loaded When the Sandwich Box software is launched and no driver is detected or no Sandwich Box is connected to the PC a warning message is displayed 17 Device not found sandwich Box not available software can be used for processing only Please check that Sandwich Box is connected and power is on Cycle Sandwich Box power Press Check Again to retry Clicking the Continue button allows the software to be used to process Sandwich Box data but the acquisition modules cannot be used The icons for the acquisition icons will be greyed out Py BES 0 ef OA 3 eee HL RESET SELFTEST FARAHS CHE SWE MONITOR ACOUIRE ACE TEST PROCESS PIULTIVIE HEADER SAVE PRINT EXIT Fi Fe FR F4 FS FG FF FB FOS FIO Fil Fi Esc Sandwich Box Vibrator
21. sweep and timebreak from the sweep generator in the recording truck should also be connected to the Sandwich Box using the supplied cable 6 The green BNC connector should be attached to the Reference sweep which will apppear on channel 5 the yellow BNC connector should be attached to the timebreak which will apppear on channel 7 and is also connected to the digital timebreak circuit If the sweep generator signal is unavailable then the vibrator may be tested in stand alone mode using just the reference sweep from the vibrator control electronics see the Typical Setup section on page 77 Power may be supplied using the AC DC adaptor included with the Sandwich Box which accepts mains voltages between 110 and 240 Volts Alternatively the Sandwich Box can be powered from a 12 volt DC power supply terminated with 4 mm sockets Optional Accessories The following optional accessories are available Sercel A cable is available for use with VE432 or VE464 vibrator electronics to connect the Similarity connector on the front panel of the DSD to the sandwich Box input This allows the AVS accelerometer signals DSD reference sweep and timebreak to be recorded on the Sandwich Box Item Qty Description 1 1 A one metre long cable to connect DSD front panel Similarity connector to the Sandwich Box Pelton A kit is available to facilitate testing of vibrators fitted with Pelton vibrator electronics The kit contains the following Item Qt
22. truck reference is available then No Data should be selected to suppress spurious results Data Trace This selects the signal to be to be used as the data trace for start time error calculation normally the vibrator reference sweep The resulting plots show the result of the data trace compared to the reference i e an error of 20 us means that the data trace is starting twenty microseconds later than the reference trace Print Options This allows the operator to save processed results as graphics files or send them directly to a printer Data may be saved in PNG BMP JPG or PDF formats 39 Print Folder This displays the folder in which graphics files will be saved The user can change the folder by clicking the Change Folder button which enables the user to navigate to a different folder If the folder location has not been changed the user is prompted to confirm the folder to use the first time a graphics file is saved each time the software is used Acquired Signals This section selects the signal to be used as the Force signal for sweep processing and also enables offset removal from the processed data Remove Offset No offset removal is performed on the recorded Sandwich Box signals to preserve DC bias voltages that may be of interest although the analogue outputs on the front panel of the hardware have the offset removed by the output electronics In Yes is visible on the Remove Offset buttons then the offset wil
23. AND OR COMPLETE THE INSTALLATION PROCESS CAREFULLY READ THIS AGREEMENT BY DOWNLOADING THE SOFTWARE AND OR CLICKING THE APPLICABLE BUTTON TO COMPLETE THE INSTALLATION PROCESS YOU CONSENT TO THE TERMS OF THIS AGREEMENT AND YOU AGREE TO BE BOUND BY THIS AGREEMENT IF YOU DO NOT WISH TO BECOME A PARTY TO THIS AGREEMENT AND BE BOUND BY ALL OF ITS TERMS AND CONDITIONS CLICK THE APPROPRIATE BUTTON TO CANCEL THE INSTALLATION PROCESS DO NOT INSTALL OR USE THE SOFTWARE AND RETURN THE SOFTWARE WITHIN THIRTY 30 DAYS OF RECEIPT OF THE SOFTWARE WITH ALL ACCOMPANYING WRITTEN MATERIALS ALONG WITH THEIR CONTAINERS TO THE PLACE YOU OBTAINED THEM ALL RETURNS SHALL BE SUBJECT TO NI S THEN CURRENT RETURN POLICY The software to which this National Instruments license applies i Sandwich Box 303 6 accept the License Agreement 0 donot accept the License Agreement By default the Sandwich Box software is installed in folder called Sandwich Box 303 in the Program Files folder or Program Files x86 folder on 64 bit operating systems The location of the software may be changed by the user during software installation however it must be loaded on the same partition as the Windows operating system Destination Directory Select the primary installation directory All software will be installed in the following locations To install software into a different location click the Browse button and select another directory Directory tor Sand
24. Baseplate M REGET_ 5ELFTEST FARAHS CHK SMP M KITOR ACQUIRE ACE TEST PROCESS PULTINIB HEADER SAVE PRINT EIT Accelerometer Signals w Time 5 Mass FE 0 1 2 3 4 5 6 T 8 9 10 Amplitude deviation of Mass relative to Baseplate Phase deviation of Mass relative to Baseplate degrees 10 10 I I I I I I I I 1215 20 25 0 35 40 45 50 55 60 65 70 Tors The top plot shows the raw accelerometer signals and the lower two plots show the amplitude and phase of the Data accelerometer relative to the Reference accelerometer as selected in the Processing Parameters Note that there will be some differences between the signals acquired by the two accelerometers as they are measuring the signals in slightly different locations on the mass In addition accelerometer sensitivity accuracy is typically 2 so differences between accelerometers may exceed 4 Differences of this magnitude however would affect measurements of absolute force and vibrator phase response The results of the test may be printed by clicking the Print icon 50 Process This module analyses data that has previously been recorded by the Sandwich Box Executing this module asks the user to select the file to process see the Folder and File Selection section of this manual and the file is processed using the values on the processing parameters page and the results are presented on five tabbed pages in the Processing window N
25. I I l 1 15 I I I I I 4 00 50 100 10 5 0 5 10 12 20 30 40 50 60 70 78 Harmonic Amplitude dB v Time s Harmonics Distortion Peak Amplitude daN v Time s nd 7 Total AN 16000 ard ee 14000 Even ae 4th oe _ one sth A Sub 6th FET Force 10000 Raw Ane 2 Tth mae m 8000 I I I I I Fund A 0 2 4 6 8 10 Frequency Hz w Time z 1000 900 800 dE down on peak 1 I I I I I I I I I I 0 1 2 3 4 5 6 T 8 3 10 Processed by Sandwich Box software version 3 00 Recorded by serial number 400 using software 3 00 Verif i Ltd a 4 IM I The results page can be resized and positioned by the user by dragging the edges of the Window Clicking the Print icon saves the results in a graphics file or prints to a printer as determined by the Print Options parameter on the Processing Parameters 60 tab If the results are to be saved the graphics files are automatically named and saved in the user Print Folder selected by the user on the Processing Parameters tab The Retain icon is used to return control to the Processing module without closing the Print Results Window The Print Results Window will remain on the desktop but its icons are greyed out although the Window can still be closed using the X icon on the window title bar Note that the graphs on the Results Window will not be updated until the Results icon is clicked again m ci Wa ita KJW 2 KBE frequency nne swansce Clomeup semie
26. IRE AKC TEST PROCESS FIUITIVIE HEADER SAVE PRINT RESULTS ERIT Frequency Statistics Close Up Scale Frequency Hz Amplitude dB Distortion Wavelet dB Force Mass BP Phase Mass Force 8i EJ 8 g a e a0 T5 T0 65 0 55 sy 45 40 35 30 J5 20 15 10 3 2 I I I I I I 115 15 20 25 30 35 40 45 50 55 60 65 Frequency Hz GH Frequency Hz Phase degrees 275 80 2 Earth baseplate resonance occurs at the point where there is a 90 degree phase difference between the motion of the mass and the baseplate The vibrator electronics may have difficulty in controlling the vibrator in this region of the sweep especially if the gradient of the phase plot is steep The above two effects are largely determined by the physical properties of the ground on which the vibrator is sweeping and cannot be controlled by the vibrator electronics This plot can help to explain vibrator behaviour under adverse ground conditions Scale Plots The scale plots tab allows the user to fix the axes of some of the results graphs to prevent auto scaling allowing results from different vibrators can be compared more easily Entering a value of zero allows the plot to auto scale each time a file is processed a default value is used for decibel plots lf a number other than zero is entered then the scale for the selected plot will be fixed in three of the places where the plots a
27. Reference Ref sim F Channel Vib Force off Force sim k Channel3 SW Box Force Mass acc weighting not equal to 100 The Computed Force signal is always saved as the ninth channel in the saved data and consists of the sum of all the partial force signals where each partial force signal is calculated by Fpartial acceleration x structure mass x weighting Fground 2 Fpartial summed across all accelerometers used Note though that the force output on the front panel of the Sandwich Box only consist of the weighted sums of the accelerometers on channels 1 and 2 This signal is intended to be used for vibrator polarity verification Input Type The Sandwich Box Mk3 can be configured for single ended or differential input signals Single ended signals have one active signal whose voltage is referenced to ground while differential inputs have two active signals which have similar amplitude but are of opposite polarity Most sweep generators have single ended outputs however care should be taken as connecting a differential signal to a single ended input will short one of the active signals to ground which will halve the effective input voltage and may damage the equipment supplying the signal Consult the user manuals of equipment to be connected to find out which type of signal to use Input Signal The Input Signal is selected from a pull down menu for each channel that the accelerometer voltage is off The options on the menu depend on
28. Sonate I wad cows w Torget A He Kasa 2000 Hi CZ j a smaki WE WAWY Be eae Zlin RACE ro Word S D a deco a Rees tO Of 10 t 20 25 30 36 40 48 0 65 60 85 70 75 88 85 26 OS wo w Tirna uj Frequency 42 KSZSZERZELE EE Wy CE KE ae ias The purpose of this feature is to allow the results of the next tested vibrator to be compared with a previous one The Exit icon closes the Print Results Window and returns control to the processing module 61 Vibrator Sweep Analysis Comments Test Data Test_003 vis Processed on 2nd July 2014 at 9 41 47 am Recorded on 14th May 14 at 3 37 20 pm Hold Down daN Drive Level Mass kg Low Freq Hz Timing Error us 17600 80 4082 12 2 Peak Force daN Target Force daN Baseplate kg High Freq Hz Force Tolerance 27600 12672 1800 79 20 SW Box Force dahl 20000 15000 Sm 777 P I MII 10000 TM ia T 15000 20000 I I I I I I I I I I 0 1 2 3 4 5 6 F Le 4 10 Frequency Hz v Time 3 Amplitude dB w Frequency Hz Total Distortion w Time 3 79 0 50 60 40 A 30 40 Al 20 20 10 gt gt n TEE ATEN ae get a 30 l l l l l l M ol nel ae ZE a RUE ree ae ae o 123 4 567 8 9 10 0 10 20 30 40 50 60 70 8036 0 123 4 5 6 F 8 3 10 Correlation Wavelet v Time ms Correlation Wavelet dB w Time 3 Phase Lag Degrees 1 0 10 5 a 0 5 20 0 0 0
29. VeRIF Z User Manual for the Sandwich Box Mk3 independent Vibrator Quality Control Test System Software Version 3 03 Verif i Limited Chiltern House Marsack Street Reading RG4 5AP United Kingdom Tel 44 118 972 2236 Fax 44 118 947 9743 June 2015 Email info verif i com Web www verif i com This manual is provided as an aid to use of the Sandwich Box vibrator analysis software package Users of the software are iree to print copies for the above purpose only This manual may not be distributed to third parties without the prior consent of Verif i Ltd 2015 Verif i Ltd Revisions Table of Contents Safety First Introduction Changes from Sandwich Box Mk2 Software Installation Note for Windows 8 users Upgrade Software Driver Installation Use Without Drivers Deliverables Optional Accessories Sercel Pelton Force Two Launching the Software Folder and File Selection Icons Reset Self Test Parameters Acquisition Parameters Acquisition Save Options File Format Self Test Channel Allocation Processing Parameters Processing Options Accelerometer Test Start Time Calculation Print Options Acquired Signals Sweep Controller Vibrator Parameters Sweep Parameters Signal Sensitivities Check Sweep Monitor Acquire Accelerometer Test Process Time Domain Tab Frequency Domain Tab Statistics Close Up Plots General Wavelet Mass Force Mass Baseplate Phase Sca
30. ck on the cursor display and select Bring to Center from the drop down menu The individual plots may be printed using the print icon or the plot data can be saved in ASCII format by clicking the Save button Both graphics files and ASCII files are saved in the folder selected on the processing parameters tab The filenames are automatically generated The close up plots include the following additions to the plots displayed on the Results page Wavelet The wavelet plot shows the centre portion of the normalised correlation wavelet of the data and reference traces as selected in the processing parameters page The close up plot of this wavelet also shows the autocorrelation wavelet of the reference trace displayed in red 54 R ANEB u C E m EJ HL SELF TEST PARAMS CHR SWP MONITOR ACQUIRE AKC TEST PROCESS FIUITIVIE HEADER SAVE PRINT RESULTS ERIT sinistes CloseUp scale Feuer Gotowe Maxem Wave Wass Mm Save Amplitude Normalised Time ms Amplitude 9250 0 0000 The difference between these wavelets shows the effect of the errors in the data trace on the correlated data Mass Force The mass force plot is an additional plot which is not shown on the normal results pages The mass force is the amplitude of the force exerted on the mass calculated from its acceleration multiplied by its mass he mass force is limited to the vibrator s peak force output although this value may ap
31. d has power applied Cycle the Sandwich Box power and re launch the software The Sandwich Box should be listed in the device manager as a USB Serial Converter Start Settings Control Panel System Hardware Device Manager Universal Serial Bus Controllers If it does not appear then there may be a problem with the driver see driver installation Sandwich Box Mk2 cannot be controlled by Mk3 software and vice versa Software is free to purchasers of Sandwich Box systems and is available on Verif i s website Intermittent Problems If the Sandwich Box produces unexpected results such as poor trace scaling or channel scrambling the Reset module should be run to reload operating parameters to the acquisition unit Running the Self Test module will show whether the system is operating correctly lf a Reset fails to clear the problem the power on the Sandwich Box should be cycled Channel Allocation Different When a record is processed the channel allocation is read from the record header If the channel names in the new record are different from the last record that was processed then a warning will be generated as the channels selected in the Processing Parameters are based on the channel allocation from the previously processed record 73 A window is opened displaying the channel names read from the currently selected file The user can confirm that the channels are correct and change them if necessary Clicking the C
32. ding Truck and Sercel Vib Electronics Reference imilari Mass Acc Reference Sandwich Box a0 Force Out s J H m AA I AN d Ga r AL Load Defaults Save Defaults Cancel Changes SELETEST PARAMS EHKSWP MONITOR ACQUIRE ACCTEST PROCESS MULTIYIB HEADER Save PRINT ERIT Acquisition Parameters Channel Allocation Processing Parameters Sweep Controller Channel Allocation Force Mounted Sensitivity Weighting Input On mV g Signal Ec 32 10 Channel Name Maximum 16 characters Channel 1 Baseplate lt gt SQ 50 w Channel 2 Mass RefBNC wl Force BNC vw Ref BNC y Voltage Ww Voltage W Channel 3 Vib Reference Channel 4 Vib Similarity Channel 5 Truck Reference Channel6 Timebreak Channel Channel7 Channel8 Channel 8 i Voltage Channel 9 SW Box Force This configuration is similar to the pervious example except that the input types are automatically selected depending on the connector on the vibrator electronics that is used BNC connectors or Similarity connector The similarity signal from the DSD is scaled by the Sandwich Box software and can be used to display the vibrator force output in decaNewtons or pounds for comparison with the Sandwich Box results 80 Specifications Supply voltage Supply current Accelerometer current Maximum input voltage Number of channels Sample interval Maximum record lengt
33. divided into five areas Processing Options This module contains the parameters used by the sweep processing and accelerometer test modules Data Trace This control selects the signal to be analysed by the process module Normally this would be the Force signal but other traces may be selected for troubleshooting purposes e g selecting the mass would use the mass acceleration signal Correlation Reference This selects the trace to be used as the correlation reference during processing Normally the recording truck reference correlation reference 37 should be selected if it available otherwise the vibrator reference can be used This trace is also analysed to estimate the highest and lowest sweep frequencies and these values are used as the maximum and minimum frequencies on the Phase and Amplitude Spectrum plots This form of scaling may not work well with non linear sweeps so the axes can also be manually scaled using values entered on the Scale page of the processed data Length to Process s This control selects the length of data to process in seconds it would normally be set equal to the sweep length Selecting zero causes the whole record to be processed Units This control selects whether pounds or decaNewtons are used to display force results Note that when an accelerometer signal is chosen as the Data Trace this control also determines whether accelerations are displayed in g or ms Phase Spec d
34. driver supplied with the Mk3 Sandwich Box is a generic USB driver that is Microsoft Certified which means that it is available on the Windows Update site and installs without warnings Connecting a Sandwich Box to a PC with a USB cable for the first time and powering up the Sandwich Box causes Windows to search for a driver in the operating system and then assuming there is an internet connection on the Windows Update site Installing device driver software Sandwich Box Mk3 searching Windows Update Obtaining device driver software from Windows Update might take a while Skip obtaining driver software from Windows Update lf the driver is found then it will be automatically downloaded and installed by the operating system 11 Your device is ready to use USB Serial Converter wf Ready to use USB Serial Port COM wf Ready to use lf for any reason a driver is not found on the Windows Update site for example the PC is not connected to the internet then the following warning will be displayed Device driver software was not successfully installed Please consult with your device manufacturer for assistance getting this device Installed Sandwich Box Mk3 36 No driver found What can I do if my device did not install properly In this case the driver has to be installed manually To load the driver manually click on Start then Control Panel and Device Manager This will list the hardware connected to
35. e Folder Data Folder rigger Level my 100 TEET LEVEI e CAUsersic woodwardiDocuments Trigger Channel __Vib Reference Acquisition Length 2 12 Pre trigger Delay ms 0 File Format wis only Sample Interval mz 1 Autosave Off SEAE Save Results Don t Save Noize Threshold imi y L To change the folder click the Change Folder button and navigate to the required folder Click the Current Folder button to select the currently displayed folder This folder is then used for storing and retrieving all Sandwich Box data files 24 cow Eel eel da ALE i Organize Mew folder w Favorites FZ Desktop Downloads E Recent Places Verif i Libraries Documents Name Courses Documents Downloads Instrument Data People Photos Project Data Date 02 10 2014 15 00 09 07 2014 09 18 09 07 2014 09 19 09 07 2014 08 51 03 07 2014 18 01 03 07 2014 18 07 03 07 2014 18 07 Type File folder File folder File folder File folder File folder File folder File folder Search Storage T p al Music Software 09 07 2014 09 06 File folder Pictures _001 vfs 19 06 2015 15 10 VES File E Videos ki O02 wfs 19 06 2015 15 18 VES File Pa _O03 vts 19 06 2015 15 41 VES File jE Computer _ O04 vfs 19 06 2015 15 41 VES File _ 005 vfs 19 06 2015 15 41 VES File ti Network kl O06 vFs 19 06 2015 15 41 VES File _ 007 vfs 19 06 2015 16
36. e Load Defaults button enables the user to retrieve all operating parameters from a previously saved file By default parameter files are kept in the user s application data folder Save Defaults Clicking the Save Defaults button saves all of the current parameters into a file so that they can be retrieved later if required The parameter files are named by the user and by default are saved in the users application data folder with a vit file extension Cancel Changes Clicking the Cancel Changes button discards any changes that have been made since the module was launched Clicking any of the icons applies the currently selected parameters and launches the selected module Acquisition Parameters This tab contains parameters describing the recording parameters and data Saving options 30 aram eLer AJ 1S OO i s m RL Load Defaults Save Defaults Cancel Changes RESET SELFTEST PARAMS HRS WP AUNITOR ACQUIRE ACE TEST PROCESS FIUITIVIE HEADER SAYE PRINT EniT a 3 Acquisition Parameters Channel Allocation Processing Parameters Sweep Controller Acquisition Save Options Trigger Type or Threshold _ Change Folder Data Folder Llc ail CAUserstc woodwardiDocuments Trigger Channel Vib Reference ma Acquisition Length 2 12 Pre trigger Delay ms 0 File Format fa only ma Sample Interval ms 1 C Self Test Autosave Off Save Results Don t Save gt Noi
37. eE m RL RESET SELFTES PARAMS CHRSWP MONITOR ACQUIRE AEE TEST PROCESS PIULTIVIB HEADER Synthetic Sweep Vib Reference Synthetic Sweep Description Start frequency 10 Hz End frequency 80 Hz 1 Sweep length 10 s 3 8 T amp Start taper 500 ms n Frequency Hz v Time 3 End taper 500 ms Tapers are Blackman Law Start phase 0 degrees Sweep type linear Sample interval 0 50 ms 0 5 i I I I I I I 100 50 0 50 100 i B 9 10 0 Post Correlation Amplitude dB w Freq Hz The top plot shows the time series of the sweeps the synthetic sweep is automatically scaled to match the recorded sweep The synthetic sweep signal is potted in red and the recorded sweep is displayed on top of it if the sweeps match perfectly no red should be visible The correlation wavelet frequency against time and amplitude plots are similarly displayed with the synthetic sweep in red beneath the recorded sweep The phase plot shows the phase relationship between the two sweeps A summary of the synthetic sweep parameters is displayed to the right of the plots 44 Monitor The Monitor module displays a real time display of the signal connected to any one of the eight input channels The trace being monitored is selected using the drop down menu of the Data Trace control and the RMS level of the portion of the signal currently displayed on the plot is displayed in millivolts along with the offset voltage that has been removed fr
38. egrees This selects the phase specification for the vibrators in degrees typically this will be between five and ten degrees Red horizontal cursors will be drawn on all phase plots at this value Ghost Specification dB This selects the permissible amplitude in decibels below the correlation peak for the correlation ghost This will be drawn as a red horizontal cursor on the correlation wavelet decibel plots A typical value for this parameter is 40 dB Force Specification This controls the allowable deviation from the target force in percent Red horizontal cursors are displayed on the force plots to indicate this tolerance Low Frequency Distortion This radio button enables a special algorithm for processing sweeps with very low start frequencies below about 5 Hz The algorithm reduces leakage between frequency bins after using a Fourier transform in processing The best way to see if this is a needed is to analyse a reference sweep If there is significant distortion on the reference sweep that is reduced when the low frequency algorithm is used then the low frequency algorithm should be used when processing vibrator force data Accelerometer Test This selects two channels to be compared in the Accelerometer Test module The accelerometer test module allows direct comparison of two similar 38 accelerometer signals for phase and amplitude difference A special record should be made with both accelerometers side by side
39. er the input to the Sandwich Box is single ended or differential In this version of the software the channels cannot be switched off and nine channels are always recorded eight inputs and the computed force signal Channel Name This is a free format field where the user enters the name of the signal connected to the channel This name is saved with the data for each channel 34 and is used by the processing modules to identify channels to the user The channel name can be a maximum of 16 characters including spaces Longer names will be truncated and any carriage returns are deleted when exiting the module Accelerometer Voltage This switch turns on the five milliamp constant current source used to power an accelerometer If the accelerometer voltage is switched on then some additional fields are enabled If the voltage is switched off then different fields are enabled Sensitivity mV g The user should enter the sensitivity of the accelerometer attached to the channel The sensitivity of Sandwich Box accelerometers can be obtained from the accelerometer calibration certificates which are supplied with the accelerometers Mounted On The user should select whether the accelerometer is mounted on the Mass or Baseplate of the vibrator under test This allows the software to apply the appropriate mass weighting to the accelerometer signals to convert them to force Force Weighting This field allows multiple acceleromet
40. ers to be placed on each structure of the vibrator to provide a more accurate determination of the ground force signal by averaging the motion of the structure from several readings If there is only one mass or baseplate accelerometer then the weighting for this is automatically set to 100 but if there are more than one of either type then the weighting control is displayed for each accelerometer The sum of the weighting of the signals connected to each of the mass and baseplate structures should add up to 100 so if there are two accelerometers on the mass they could each be set to 50 for example and if there were three accelerometers on the baseplate these could be set to 30 30 and 40 If the weightings for each accelerometer type don t add up to 100 then a warning is displayed as shown below 35 Parameters Cancel Changes E3 w ze Ue aka O 9 A RESET SELFTEST PARAMS HKSWP MONITOR ACQUIRE ACE TEST PROCESS FIUITIVIE HEADER SAVE FRINT EXIT Acquisition Parameters Channel Allocation Processing Parameters Sweep Controller Channel Allocation Force Channel Name Acc Mounted Sensitivity Weighting Input Input Maximum 16 characters Voltage On mig Type Signal Channel 1 Baseplate on 31 50 Channel 2 Mass Front Mass 32 10 100 Channel 3 Mass Rear hass 31 19 100 Channel4 Channel 4 Off Voltage W Channel5 Bazeplate AVS BP zim W Channel6 Mass AVS Mass sim W Channel Vib
41. es are read from the record header Ii the record contains different channel names from the most recently processed record then the channels selected on the Processing Parameters tab which are based on the previously processed record will be different from the new record In this case the following window is displayed and the user is asked to confirm that the channels selected for processing are correct or change them using the drop down lists File Edit Operate Tools Window Help 1 Sa I m RL RESET SELF TEST FARAHS SET GRIN MOMITOR ACQUIRE KC TEST PROCESS FINLTIYIE HEADER SAVE PRINT EXIT Processing Options Start Time Calculation Data trace Computed Force Reference trace Truck Reference wa Correlation reference Baseplate Left a Data trace None na Accelerometer Test Force Reference Trace Baseplate Middle Computed Force Data trace Mass ra Channel Weighting The channel allocation for this record is different from the previously processed file Please check that the Processing Parameters are corrrect then press Continue Clicking the Continue button will process the data using the currently displayed channel names and clicking the Cancel Changes switch closes the module without changing the parameters or processing any data 26 Icons The following icons which are displayed at the top of most Sandwich Box windows allow the user to launch a new module The characters in b
42. h Record format OS requirement Processor requirement PC interface Min monitor resolution 9 to 18 V DC overvoltage protection blows the fuse at 18 V 500 mA 12 V reverse polarity protected 5 mA 15 V 8 4 2 1 20r v4ms 128 s SEG D plus optionally SEG Y or vfi Windows Vista 7 or 8 32 or 64 bit Support for SSE2 instructions USB 2 or 3 600 x 800 81 Distortion Calculation Distortion in the Sandwich Box is total distortion rather than the more normal harmonic distortion Calculating the distortion for a sweep frequency is problematic as the frequency of the signal and hence the distortion components is changing continuously The sweep is divided up into overlapping time slices and the distortion for each slice calculated and assigned to the centre of that window the first distortion value in the sweep will be assigned half way through the first window hence there is a gap at the start of the record where there is no distortion result The first time slice contains the first nine cycles of the sweep and this is windowed to prevent discontinuities as the start and end of the slice and then converted to the frequency domain using a Fourier transform SS TOR R ft b of FoR WOK ok Kom om M The peak amplitude in the frequency domain is calculated and this is taken to be the fundamental frequency although as the frequency is changing during the time slice the energy is s
43. hl kla 80 13528 wib 4 Mass kg Low Freq Hz 3039 11 Bazeplate kg High Freq Hz 1452 104 Amplitude dB v Frequency Hz aan Distortion 10 M 30 I I I I I I i l l I I I I I I I I I 0 0 44 60 50 100 115 0 1 2 3 4 5 6 7 amp 9 10 l Correlation Wavelet v Time ms ne Phase Lead Degrees i 100 50 0 50 100 11 20 40 60 80 104 i Correlation Wavelet dB w Time 5 R Fundamental Amplitude daH vw Time z Processed by Sandwich Box software 3 00 Recorded by serial number 200 using software 2 00 verif i Lid This module contains a number of unique icons as well as two normal ones The icons are shown below with a short description The underlined words are the hot keys to execute the function using the keyboard Page Up Adds another sweep to the multi vibrator analysis KERT VIE W Page Down Deletes the last sweep from the multi vibrator analysis DELETE m End Clears all data from the multi vibrator analysis plots t ED F12 Prints the current window to printer or graphics file Insert Returns to the main menu but leaves this Window open in ETAl Exit Closes this Window and returns to the main menu EIT Clicking the Next Vib icon allows the user to add a sweep to the plots The user should select the first file for processing see the Folder and File Selection section of this manual The data is processed and plotted in black on the graphs The
44. iSWB 31Example Data Sample int ms Record Len 3 Target daN pa az es Hold down daN Pk force daN Drive start Freq Hz End Freg Hz Sw Length 8 ME PROCESS MULTI VIE mn g Taal Cancel Changes Read Only File can not be modified Copy vfs Software Hardware Trigger Type Baseplate kg Mass kg System Start Taper ms End Taper ms Taper Type User comments 36 characters used 188 more allowed Trig Level mv Trigger Channel Lo 4 Pre Trig Delay Non linear Boost Start Phs deg Sweep Type Save All Sandwich Box data is saved in a folder of the users choosing See the Folder and File Selection section of this manual The Change Folder button can be used to change the currently selected folder Once the folder has been selected the user is prompted to enter information to be saved with the data Save Data Data File Edit Operate Tool Window Help First Part of File Name Optional Test Type comments to save with data Vib 5 test with standard sweep 50 drive Save amp Process Change Folder Cancel 41 characters so far 183 more allowed File Name Written Test_005 vfs Folder JAiInstrumentsiSvy Box Test Data The first field is a space where the user can optionally enter a text string which will be used as the first part of the file name used to store the data The user can enter comments of up
45. igger Sample Interval ms This selects the sample interval of the recorded data in milliseconds the anti alias filter is automatically applied according to the selected sample rate Sample intervals of 0 25 ms 0 5 ms or 1 ms 2 ms and 4 ms are available Autosave The Autosave control can be used to automatically execute one or more modules at the end of each acquisition Off the software waits for user input at the end of each acquisition Save only at the end of an acquisition the data is automatically saved using the default values data folder comments etc save then process the data is saved using default values then processed 32 Save then acquire the data is saved then the unit waits for a trigger to start another acquisition Noise Threshold mV During data acquisition the displays on the acquisition plot are normalised to allow signals of significantly different amplitudes to be shown on the same graph A side effect of this is that noise pickup on channels with no signal applied will be amplified up to full scale Setting a noise threshold means that signals below this level will not be amplified up by the normalisation process A suggested value for this control is 10 mV but the amplitude of the noise signals can be viewed in real time using the Monitor module Save Options This section displays the path of the currently selected data folder where acquired data is saved Clicking the Change Folder contro
46. inition of polarity requires that the vibrator force signal measured by SEG polarity sensors should be in phase with the correlation reference This can be simply checked with sight of a monitor from the recording system STH LA MN Force signal 7 is in phase with the correlation reference 1 For completeness a correlated record should be produced to check that the correlation wavelet is zero phase Notes The real time force signal output by the Sandwich Box hardware is the weighted sum of the accelerometer signals recorded on channels 1 and 2 of the Sandwich Box only 76 The weighting is performed in steps of 50 kg Polarity cannot be assessed by the Sandwich Box alone as there is no way to determine the polarity of the correlation reference sweep in order to do a proper polarity test the signals must be acquired by the recording system 1 Typical Setup The following diagrams show some of the ways the Sandwich Box can be configured The setup is flexible and the user can connect signals in many different configurations these are just examples Basic Standalone Vibrator Sandwich Box 00 Channel Allocation Channel Name Mounted Sensitivity Weighting Maximum 16 characters On mV g Channel 1 Baseplate 31 50 32 10 Channel 2 Mass Channel 3 Vib Reference Channel 4 Timebreak Channel5 Channel5 Channel6 Channel6 Channel7 Channel7 FEE EE EEE EEEE EE
47. is in use 84 Front Panel Connectors Input 1 4 Input Connector 12 10S B Channel Low SS D chamel tow Input 5 8 Input Connector 12 10S D Ghama kow SSS BO 85 Output 1 4 Output Connector 12 10P Signal Pin fso oOo B CGhameltbtw D Chamei2tow SSS Output 5 8 Output Connector 12 10P B Chamel5stow D Ghamal kow m KO Battery Input Connector 8 33S 86
48. l allows the user to select a different folder to use Alternatively the first time a file is saved each time the software is used the user is prompted to confirm the folder to use if it has not been changed File Format The File Format control enables the user to choose to save data in SEG Y or Testif i format files in addition to the default Sandwich Box VFS format which is SEG D The additional files will be placed in the same data folder as the Sandwich Box format files but will not be listed in the Sandwich Box file display software Sandwich Box SEG D format Testif i vfi Verif i proprietary format SEG Y Self Test This allows the user to save test data and or displays from the self tests Test data is saved in the same folder as the acquired data but the files are given the prefix Selftest results are saved as graphics files using the format and folder selected in processing parameters Channel Allocation This tab is used to enter information about the signals connected to the eight input channels There is one line for each of the eight acquisition channels 33 The ninth channel is a calculated force signal provided by software weighting and summing of accelerometer signals recorded on any or all of the eight input channels Note that the force signal available on the front panel of the Sandwich Box is a hardware generated signal which is the weighted sum of the accelerometer signals on channels one and two onl
49. l be removed when the data is processed Note that the Sandwich Box accelerometer signals have high level of offset of around 9 volts It is recommended that the DC offset is removed for all channels SW Box Force Recalculate Force When SW Box Force is displayed the data trace used for processing is one of the nine recorded signals including the SW Box Force signal which is generated in real time during data acquisition and saved as the ninth data trace This is the normal method of operation Clicking the SW Box Force button changes the test to Recalculate Force which enables a force signal to be generated by the processing module When Recalculate Force is displayed the data trace is calculated from one or more of the recorded acceleration or force signals at the time of processing 40 P EEEE 6 OE EX M RESET SELFTEST FARAHS HK WPAOKITOR ACOUIRE ARC TEST PROCESS FINITIYIE HEADER SAVE FRINT Acquisition Parameters Channel Allocation Processing Parameters Sweep Controller Processing Options Print Options Data trace SW Box Force ie Frint options PNG file only a Change Folder Vib Reference ma Correlation reference Length to process 58 0 Print Folder CA Usersic woodward Pictures Units Imperial ma Phase spec degrees Ghost specification dB Acquired Signals Force specification Kosai Low Frequency Distortion Signal Weighting Noise Threshold mi Y Baseplate 0 Masz
50. le Plots Signals Results Multi Vibrator Processing View Edit Header Save Print Exit Troubleshooting No Sandwich Box Found Intermittent Problems Channel Allocation Different Polarity Verification Notes Typical Setup Basic Standalone Vibrator Normal With Recording Truck Normal With Recording Truck and Sercel Vib Electronics Specifications Distortion Calculation Low Frequency Distortion Algorithm Front Panel Connectors 52 53 54 56 57 58 59 64 67 69 71 72 73 73 73 73 75 76 78 78 19 80 81 82 83 85 Safety First The Sandwich Box uses independent accelerometers to monitor the performance of a vibrator while it is sweeping Normal operating procedures should be adhered to when working on a vibrator to prevent injury or damage to equipment Correct personal protective equipment should always be worn when working on or around vibrators and the vibrator should never be pressured up when mounting dismounting or moving the accelerometers Note that the AC power supply included with the Sandwich Box is for indoor use and is not suitable for use in damp or wet conditions The Sandwich Box uses long cables and should not be used during electrical storms or near high voltage power lines Introduction The Sandwich Box is a signal acquisition and processing system for recording and analysis of vibrator sweeps using independent accelerometers The system consists of software running o
51. lue type in the list below indicate the Hot Keys usually function keys which can be used to execute commands directly using the keyboard The blue figures in the list below indicate the hot key and these are hyperlinked to the relevant part of this manual P sr F1 Re establishes communication with the Sandwich Box hardware NA F2 Performs a self test using the internal oscillator EE NOA paras F3 Opens the parameter editing window 1S iksir F4 Compares a recorded reference sweep with a synthetic sweep CY F5 Continuous real time display of any one of the 8 input channels 4 F6 Acquires data for saving or processing F7 Processes accelerometer similarity test data FH TT T F8 Analyses data from a vibrator sweep Z m F9 Processes data from a number of different sweeps for comparison MI FFI F10 Displays and allows editing of the record header F11 Saves the last acquired sweep to disk fo pant F12 Prints the current window to printer or graphics file mr Esc Returns to the main menu or exits the programme The following icons are displayed for the Results windows only EJ ME e Home Displays the graphical results on a single page in print format zd Insert Closes the Window and returns to the results module 27 Reset Clicking this icon sends an initialisation code to the Sandwich Box hardware through the USB port Use
52. me folder XXxXX is a four digit number which is incremented by one for each saved file aaaa Is a four character code indicating the modules used to generate the file fff is the file extension indicating the file format png jpg bmp or pdf The character codes are as follows main Front panel self Self test para Parameters chck Check sweep moni Monitor acqu Acquire acct Accelerometer test proc Processing module sing Single vibrator results page stat Vibrator statistics mult Multi vibrator plot head Header 71 Exit Clicking the Exit icon within any module closes the module window and returns to the main menu Exiting from main menu saves the current acquisition and processing parameters to disk then closes the Sandwich Box programme 72 Troubleshooting There are two status LEDs on the front panel of the Sandwich Box The red LED labelled Power is lit whenever the Sandwich Box is switched on and power is applied to the unit If this LED does not light then check the power supply and fuse During data transfer between the Sandwich Box and the controlling PC for example when the Monitor module is running the green LED will flicker it may appear to be constantly lit at a low level No Sandwich Box Found When a Sandwich Box is connected and switched on it should be recognised by the operating system and an appropriate sound generated Check that the Sandwich Box is connected to a functioning USB port an
53. meared over a range of frequencies All of the energy between 0 5 and 1 5 times the fundamental frequency is summed and assigned to the fundamental frequency the white portion of the plot below The energy from 1 5 to 2 5 times the fundamental is assigned to second harmonic distortion red and so on up to the ninth harmonic Energy more than 9 5 times the fundamental frequency is ignored The energy from zero to 0 5 times the fundamental frequency brown is assigned to sub harmonic distortion The time slice above is approximately 500 ms wide so the first distortion result will be plotted 250 ms after the start of the sweep Another result of the short Slice length is that the FFT only yields one result per Hz 82 a c 3 E a E T I 45 50 5 Frequency Hz Total distortion is calculated from the formula a 100 x Distortion M M an n 2 Where A is the amplitude of the fundamental and an is the amplitude of the n harmonic Low Frequency Distortion Algorithm For lower sweep frequencies the harmonics are closer together as the spacing between each harmonic is equal to the fundamental frequency At very low sweep frequencies energy from the fundamental frequency may spread into the range of frequencies assigned to the second harmonic The plot below is taken from a time slice where the fundamental frequency is approximately 3 Hz The second harmonic is measured from the energy between 4 5 Hz and 7 5 Hz thi
54. module Sweep Parameters These controls are not necessary for operation but are used to generate the synthetic sweep if the Check Sweep module is used They are saved in the Extended Header and can be edited using the View Edit Header module 42 Signal Sensitivities These controls are used to enter the sensitivities of the force and acceleration signals output by the vibrator electronics which may be recorded on the Sandwich Box The sensitivity values are used to scale the signals so that their amplitudes are recorded correctly There are different sensitivities stored for each type of vibrator electronics Sercel Pelton Seismic Source and Other Note that the sensitivity of Sercel force and acceleration signals was changed by patch 20 of software version 2 0 The default sensitivity values shown above apply to all software versions after this 43 Check Sweep This module compares the recorded reference sweep with a sweep generated in software to check that the sweep parameters are correct he software sweep is generated using parameters entered on the Sweep Generator Parameters when the recording was made although these parameters can be retrospectively edited at any time using the View Edit Header module The reference sweep used for the analysis is the correlation reference sweep selected on the Processing Parameters tab Standard non linear sweeps are supported but custom sweeps are not 3 m o P vvEEJES os PRE
55. n 300 wass 100 o jom e voe Vb Reference om Snde votas o jom Single voe oo ge Votage ReoorderRet Jon _ Single _ Votage s jom jof sme vote SAY Koc a E a a Values displayed in fields with a white background can be edited this includes the user comments Exiting the module saves the changes to the record header There is room in the format for 224 characters of user comments any extra characters will be truncated when the record is saved There is a display of the number of characters in the user comments at the bottom of the user comment field This number is continuously updated as characters are typed Changing the mass of the mass or baseplate will affect the force calculation The computed force channel is calculated at the time the data is recorded and will not change to reflect new values of mass and baseplate entered in this module Ifthe mass of the mass or baseplate are changed it is necessary to use the Recalculate Force option in the Processing Parameters module to reflect the changes made If this module is run on a read only file for example a file on a CD a warning will be displayed as edited values cannot be saved 67 68 ST PARAMS Te HK SWP MONITOR ACOUIRE AGC TEST Date Recorded Recorded on 11th April 15 at 10 07 28 am File Name C Software Sandwich Box
56. n Windows operating systems and hardware consisting of an eight channel acquisition unit along with accelerometers and cables Any or all of the Sandwich Box inputs may be configured to record data from accelerometers powered by current sources built into the Sandwich Box Signals are displayed in real time during acquisition and can then be saved to disk and processed when acquisition of a sweep is complete All input signals are buffered in the Sandwich Box and outputs are provided for connection to a seismic acquisition system In addition a vibrator weighted sum ground force signal created from accelerometer signals on channels 1 and 2 is computed inside the Sandwich Box and output on one of the front panel connectors This signal can be connected to the recording system and used to determine vibrator polarity Changes from Sandwich Box Mk2 The Sandwich Box Mk3 hardware has been completely redesigned to use the latest generation of seismic A D converters but the software has been kept similar to the Mk2 version The Mk3 drivers will load under Windows 8 The following lists some of the differences between the Mk2 and Mk3 Sandwich Box hardware The software is not compatible between the two versions and the correct version of software should be used if a Mk3 Sandwich Box is used with Mk2 software an error message will be displayed The Sandwich Box Mk3 supports differential inputs e g the signals on the Similarity connector of Sercel
57. om the display This module may be used to check that all signals are being received correctly and to select a suitable signal and level for the acquisition trigger and noise threshold parameters E Monitor ESI Z a Gal GG EB Z AL i SELF TEST FARAKI CHE SWF MONITOR ACQUIRE ACE TEST PROCESS MULTIYIE HEADER SAVE FRINT EIT Data Trace Time s Signal Level mV rms Offset mV SWBBP Acc 107 16 166 9 18E 3 Data Trace mV w Time ms 200 180 160 140 120 100 20 I I I I I I I I I I I I I I I I I I I 0 50 100 150 200 250 300 350 400 450 500 550 600 650 700 750 800 850 900 950 1000 45 Acquire This module acquires data that can be saved on the PC and subsequently processed The accelerometers should be placed on the mass and baseplate structures as appropriate Note that in order to emulate the vibrator control electronics signals the Sandwich Box accelerometers should be placed as close as possible to the control system accelerometers Clicking the Acquire icon causes the Trigger screen to appear If the trigger is a threshold voltage on an analogue signal then a real time display of the selected Trigger Channel is shown with cursors indicating the selected threshold voltage s If a single polarity threshold has been selected in the Acquisition Parameters then only one cursor will be shown 7 Tigger S gt ANES pt u CC CJEJEJA BS RL RESET SELETE
58. on continued Upgrade Software A special Upgrade version of the Sandwich Box software may be available The upgrade version is identical to the Full release except that it does not include the runtime engine making the installation files much smaller This can be loaded onto PCs that already have the runtime engine installed e g when upgrading the software Installation for the upgrade version is similar to the full version except there is no National Instruments licence agreement If the Sandwich Box software is launched and a suitable runtime engine is not available the following error message is displayed 10 ie Unable to locate the LabVIEW Run Time Engine Sandwich Box 303 requires a version 2014 or compatible LabVIEW Run Time Engine To correct this problem please contact the vendor of Sandwich Box 303 or download the LabVIEW Run Time Engine from the National Instruments Web site Do you want to visit ni com to download the LabVIEW Run Time Engine lf this message is seen the full version of software should be installed Driver Installation The Sandwich Box Mk3 attaches to a USB port of the host computer either USB 2 or 3 and a software driver is required to enable communication between the PC and the Sandwich Box The software may be loaded on a computer without a driver to allow data recorded with a different PC to be processed Driver must be installed before the unit can be used for data acquisition The
59. on the mass Reference Trace This selects the trace to be used as the reference during processing of an accelerometer test Data Trace This control selects the signal to be to be used as the data trace for an accelerometer test The resulting plots show the result of the data trace compared to the reference i e an amplitude of 2 means that the amplitude of the data trace is 2 higher than the reference trace Start Time Calculation This selects the two traces to be used for start time error calculation The Start time error is the time difference between the reference sweep in the recording truck and the local reference generated in each vibrator The calculated start time error is displayed on the statistics page of the results in microseconds and also on the printable results page Normally both the recording truck and vibrator reference signals are recorded on the Sandwich Box to allow the start time error to be calculated For standalone testing of a vibrator when no recording truck is available the start time error cannot be determined If either of the two signals is set to No Data or if the amplitude of either of the two signals is less than one millivolt the calculation will not be performed Reference Trace This selects the trace to be used as the timing reference during processing of a start time test Normally this would be the correlation reference from the Sweep generator in the recording truck If no recording
60. ontinue button will process the data using the displayed channel names and clicking the Cancel Changes switch closes the module without changing the parameters in this case the data will not be processed 74 Polarity Verification The Sandwich Box makes it very easy to conduct vibrator polarity tests as the magnetic mounted accelerometers can be easily removed to conduct tap tests A hardware force signal is produced in real time on pins J and K of front panel connector Output 1 4 A connecting lead is supplied with the Sandwich Box which enables the force output signal to be connected to a recording system cable on left in picture below The cable is terminated in two 4 mm sockets and the user should obtain a cable to connect this to one channel of the recording instrument cable on right in picture below With the force signal being monitored on the recording system the user should perform tap tests on each of the two accelerometers attached to channels 1 and 2 of the Sandwich Box For SEG polarity tapping the bottom of the accelerometers should produce a downward break on the force channel of the recording system if the polarity is incorrect the two 4 mm connectors should be reversed and the test repeated 19 TTT A NN Taps break downwards for tap on bottom of accelerometer When the polarity is correct the accelerometers should be mounted on the vibrator and a sweep recorded on the recording system The SEG def
61. ote All plots can be rescaled by dragging the cursor over the maximum or minimum value on the X or Y axis and typing in a new value Time Domain Tab The first tab labelled Time Domain shows trace amplitude and harmonics The green cursors represent the target force calculated from the vibrator parameters The red cursor represents the hold down weight of the vibrator lf the vibrator force signal exceeds the hold down weight there is a possibility that the vibrator is decoupling tc a NAJ ri a on ACC TEST PROCESS A m imi B a Time Frequency Statistics Close Up Scale Signals SW Box Force dal Signal KS Hold down KAS m a MMM 5 Bo 05 10 15 20 25 3 0 35 40 45 5 0 55 6 0 65 7 0 75 8 0 85 9 0 95 10 0 20000 Sawe UJ il WA one Frequency Hz vw Time z on peak Frequency Domain Tab The second tab labelled Frequency Domain shows a number of additional plots 51 P VEEJ Gurl CVE SE HL RESET SELFTEST PARAMS CHR SWE MONITOR ACQUIRE ACC TEST PROCESS FIULTINE HEADER SAVE PRINT RESULTS _ ERIT Time Frequency Statistics Close Up Close Up _ Frequency Hz v Time s Amplitude dB v Frequency Hz 50 Total Distortion w Time z 0 10 20 20 30 I I I I I I I I I 8 8 10 2 10 20 30 40 50 60 70 80 83 45 67 8 9 10 Correlation Wavelet v Time ms Correlation Wavelet dB w Time s 10 Phase Lead Degrees v Freq Hz 1 0 0 0 20 0
62. ou ve disabled this feature in your device installation settings Browse my computer for driver software Locate and install driver software manually Select the second option Browse my computer for driver software and navigate the Sandwich Box software whose default location is C Program Files Sandwich Box 303 Drivers Select the folder that contains drivers for your hardware b Internet Explorer Microsoft NET MSBuild gt National Instruments b NVIDIA Corporation gt Reference Assemblies a Sandwich Box 303 14 Zaj Upda Browse for driver software on your computer Search for driver software tn this location C Program Files x66 Sandwich Box 303 Drivers Include subfolders Let me pick from a list of device drivers on my computer This list will show installed driver software compatible with the device and all driver software in the same category as the device selecting Next will load the driver and on completion a Window will be displayed indicating that the driver has been loaded successfully Windows has successfully updated your driver software Windows has finished installing the driver software for this device USB Serial Converter Note that the Sandwich Box is identified as a generic USB Serial Convertor rather than specifically as a Sandwich Box Click Close to end the driver installation programme The Sandwich Box can now be used for acquisi
63. pear to be exceeded as the accelerometer signal is not necessarily representative of the motion of the mass as a whole For force locked vibrators the vibrator output Ground Force is the sum of the force on the mass and the baseplate structures The phase difference between the motion of the mass and the baseplate may cause the vibrator s force output to be significantly less than the mass force The mass force reaching the peak force of the vibrator may be the limiting factor in the maximum output force that the vibrator can achieve 55 Resuls PAA BS eee Sal LLL Gl RESET SELF TEST PARAMS CHESWP MONITOR ACQUIRE AIC TEST PROCESS FIULTIYIE HEADER SAVE FRINT RESULTS EIT me rregueney staustes Close Up seat as Fore 45000 Mass Force 14000 Peak Force 13000 12000 11000 Im Peak Mass Force daN l EH Time s Mass Force 4 08 12700 The red cursor on the plot indicates the vibrator s peak hydraulic force limit as entered by the user in the acquisition parameters Mass Baseplate Phase This plot which shows the phase relationship between the mass and baseplate structures is not shown on the normal results pages The phase relationship between the mass and baseplate becomes important when there is a large phase difference between the two structures possibly preventing the vibrator from achieving target output force 56 e Oe m EE EL SELFTEST PARAMS CHK MUF MOKITOR ACQU
64. re displayed i e frequency domain close up and print results Fixed scales are not applied to the Multi Vibrator plots When the value in a control is changed the change is applied the next time a record is processed The Amplitude Spectrum and Frequency v Time plots use maximum and minimum sweep frequencies and these are calculated from the frequencies 57 entered for the Phase plot if these are non zero or by analysis of the maximum and minimum frequencies in the reference sweep P AE Li ajLL Z EF W w E AL RESET SELF TEST SET GAIN MONITOR ACQUIRE ACC TEST PROCESS FIUITIVIE HEADER SAVE PRINT RESULTS ERIT sale The fields below allow the user to fix the scales of certain plots entering a value of zero causes the plot to autozcale The scaling is applied to plots on all available views Le Frequency Domain Close Up and Results The layout of the grid below is similar to the layout of the plots on the Frequency Domain page After a number is changed Process the data again Fr to apply the changes the Frequency Domain page will be displayed Time Series Amplitude Spectrum Distortion Signal Amplitude 0 Minimum Amplitude dB 0 Maximum Distortion 0 Z Maximum dB 0 Minimum Distortion 50 Harmonic Amplitude Correlation Wavelet Phase Minimum Amplitude dB 60 Minumum Amplitude dB 60 Maximum Phase 10 Positive Phase Lead Minimum frequency Hz 5 Maximum frequency Hz T2
65. rue timing can be recovered in processing A E Acquire Data From Sandwich Box NIEBIE NIENIE oe C2 jews Ar Wy kj GA iL n AL Autosawe RESET SELF TEST FARAMS CHE SWP MONITOR ACQUIRE ACC TEST PROCESS MULTIYIE HEADER SAVE PRINT ExIT Sai wor men fe zam m m A of r Input Signals v Time ms SWB BP Acc SWE Mass Acc Timebreak DSD BNC Ref DSD Force DSD Mass Acc l l l l I I l l l I I l l l l l 0 500 1000 1500 2000 3000 3500 4000 4500 3000 5500 6000 6500 7000 7500 000 Signal Level amp Too Small WOK Overload Record length is 8 seconds The acquisition display is updated every 500 samples during the acquisition lf the sweep length exceeds 16 seconds the plot scrolls showing a maximum of 16 seconds of data Clicking the Abort button during the sweep terminates the acquisition Clicking the Autosave control during the acquisition allows the user to change the autosave mode using the drop down menu see Acquisition Parameters This window can be resized or maximised to make better use of high resolution monitors At the end of the sweep gain level symbols are displayed for each trace to the right of the plot The symbols indicate whether the recorded signals are of appropriate amplitude As long as the symbols are green the data can be processed if any trace shows a red symbol then an overscale has occurred on that channel and the data has been clipped and will give erroneous results
66. s 4082 Units kg Sercel Force BNC daN mV 127 332 Hold Down Weight 27600 Units dan el Sercel Force sim daN mv 63 666 m 27600 Units dan Sercel Acceleration m sfs mV 636 68 Drive Level 9 T Sweep Parameters Start Frequency Hz 8 End Frequency Hz a0 Sweep Length s 12 Start Taper mz End Taper ms Start Phase degrees 0 Taper Type Blackman Law Sweep Type dB per Hz ra Boost 0 The tab is divided into three areas Vibrator Parameters This section describes the physical characteristics of the vibrator under test Units may be entered in Imperial or Metric units or a combination of both Note that the lesser of Hold Down Weight and Peak Force is used along with the drive level to determine the target force The value of the Peak Force parameter is used to draw a cursor on the on the Mass Force plot The System control is used to select the vibrator electronics that was used to control the vibrators This input also affects the Input Signal options on the Channel Allocation tab is used to select the signal sensitivities used to scale the Force and Acceleration measurements and is used to calculate the correct target force All of these parameters are saved in the Extended Header of the Sandwich Box SEG D format data file so that the correct values are used if the data is processed at a later time The values in the header can be edited after recording using the View Edit Header
67. s is represented by the pink and red areas in the plot above 83 z z a E a ET T I I I I I I I I I I I I I I I I I I I 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 2T 28 2 Frequency Hz It can clearly be seen that the pink area of the plot contains energy from the fundamental that has leaked into the area assigned to the second harmonic Performing a distortion analysis of this data would give an apparently high level of second harmonic distortion as it contains energy from the fundamental frequency In order to mitigate this problem the Sandwich Box processing module contains a Low Frequency Distortion option Enabling this option prevents the pink area of the plot being included in the second harmonic measurement and thus gives a better approximation of the actual vibrator distortion The best way to determine whether the Low Frequency Distortion option should be enabled is to process the vibrator reference sweep This should have little or no distortion so if the analysis indicates that there is significant amount of distortion the Low Frequency Distortion option should be enabled and the reference sweep reprocessed An example of this is shown below s0 Total Distortion w Time z s0 Low Frequency Distortion 4 25 29 0 I I l l l l l 0 I I l l l 0 2 4 6 6 10 12 14 16 0 2 4 6 8 10 12 14 16 Note that all distortion plots are renamed to show that the Low Frequency Distortion algorithm
68. se Threshold mv 10 The tab is divided into three sections described below Acquisition This section contains the acquisition parameters Trigger Type Recording is started by means of a trigger The signal on a selected channel is monitored and when the voltage reaches a pre determined level acquisition is started There are two types of trigger analogue and digital For the analogue triggers the user selects a threshold voltage and polarity The hardware monitors the voltage on the selected trigger channel and when the input signal of exceeds the threshold acquisition is started on the next sample As the system is already recording data prior to the trigger the sweep start is asynchronous i e Subsequent records may not be started at exactly the same point in the sweep although all channels are sampled at exactly the same time in each record The user can select whether to trigger on a positive voltage a negative voltage or either The digital trigger requires a positive going logic signal e g a TTL output as a trigger When the acquisition module is started the Sandwich Box waits for a trigger voltage to occur and the A D convertors are only started when the trigger signal is received This means that subsequent records are sampled at the same time as the initial record however owing to the delay of the digital anti alias filters data is not output for approximately 32 samples after the trigger is received The output data
69. the system including the Sandwich Box which will aopear under the Other devices category as shown below 12 ee F G KH E EB 42 VERIF ILTD PC b gli Computer b aq Disk drives BL Display adapters e DVD CD ROM drives S Human Interface Devices Lg IDE ATA ATAPI controllers ZG Keyboards PI Mice and other pointing devices Ms Monitors EP Network adapters a Other devices i Sandwich Box Mk3 b 8 Portable Devices gt EP Ports COM amp LPT D RD Processors p jj Sound video and game controllers b gl System devices p F Universal Serial Bus controllers pl 4 i r j 3 y gt Right click on Sandwich Box Mk3 and select Update Driver Software from the menu that appears Gas m Blu 5 F Rs 4 2 chris PC b i Computer Disk drives b lid Display adapters b DVD CD ROM drives b lt q IDE ATA ATAPI controllers gt lt a Keyboards p M Mice and other pointing devices p W Monitors p EP Network adapters d po Other ners cq D Update Driver Software Disable Uninstall Scan for hardware changes Properties LI b 7 Uniwersal Launches the ches the Update Driver Software Wizard for the selected device 13 This brings up the following window How do you want to search for driver software Search automatically for updated driver software Windows will search your computer and the Internet for the latest driver software for your device unless y
70. the vibrator electronics type selected on the Sweep Controller tab Generally the options 36 are baseplate or mass acceleration measured by the vib electronics vibrator force or reference signals or just voltages The force and acceleration signals are scaled prior to recording so that they can be compared directly with the Sandwich Box signals Processing Parameters This tab lists the specifications and channels used by the various processing modules in the software package Be AJ 1S OO i zi m RL Load Defaults Save Defaults Cancel Changes RESET SELFTEST PARAMS HRS WP AGNITOR ACQUIRE ACE TEST PROCESS FIUITIWIE HEADER SAYE PRINT ZA LL nad Z Acquisition Parameters Processing Parameters Sweep Controller Processing Options Print Options Print options PNG file only r Change Folder Frint Folder DAlnstrumentsiSw Box Siv3 Nantes Data trace SUV Box Force ra Correlation reference Vib Reference r Length to process 2 0 Units Imperial i Phase spec degrees Acquired Signals Ghost specification dB u SW Box Force Remowe LL gt Force specification Offs Signal Low Frequency Distortion F Yi Baseplate Mass Accelerometer Test Vib Reference Reference Trace Baseplate r Channel 4 Data trace Mass le Truck Reference Start Time Calculation Yi Channel 6 Reference Trace Truck Reference r Yi Channel Data trace Vib Reference Li Channel 8 The tab is
71. this icon to re establish communication with the Sandwich Box after connection has been lost e g the USB cable has been disconnected or the power to the Sandwich Box has been cycled If communication cannot be re established using this module then power should be cycled on the Sandwich Box hardware 28 Self Test The self test connects an internal oscillator to the input of all eight recording channels The signals are wired directly to the front panel connectors so that the entire signal path is tested All inputs to the Sandwich Box should be disconnected prior to executing the test to prevent external connections affecting the results The self test comprises a number of acquisitions that are automatically run in sequence using filter settings and record length selected on the Acquisition Parameters tab Each test is analysed internally and the results presented in a table a green background indicates a pass and a red background indicates a failure At the end of the series an indicator adjacent to each trace on the plot shows whether the channel passed all of the tests or not EJAS Qu rl fy m RESET SELFTEST PARAMS CHKSWP MONITOR ACQUIRE ACCTEST PROCESS MULTIYIB HEADER SAVE PRINT ERIT D M Cc i Input Signals v Time ms an Gain DistdB Acc mA DRD dB Noise uV Xfe 0 003 831 538 107 7 86 107 0 009 831 542 1075 88 107 0 049 829 538 107 1 92 0010 828 537
72. tion 15 Checking the Device Manager should now show that the Sandwich Box is recognised as a USB device View Help een eRe a chris PC b JEE Computer gt Sy Disk drives p BL Display adapters b ek DVD CD ROM drives gt 4g IDE ATA ATAPI controllers gt ZE Keyboards gt Pi Mice and other pointing devices JE Monitors p KY Network adapters a ip Other devices i USB Serial Port 1 Ports COM amp LPT b Processors i Sound video and game controllers u F u kaj ks A kd lt gt Storage controllers p jil System devices a F Uniwersal Serial Bus controllers ven F Standard Enhanced PCI to USB Host Controller m F Standard OpenHCD USB Host Controller ig USB Root Hub J USB Root Hub s USB Serial Converter or Note that after the USB Serial Convertor driver is loaded a USB Serial Port device appears in the device manager This is part of the Sandwich Box hardware interface that is not used and can be ignored however the warning can be removed by repeating the driver installation process above starting by right clicking the entry in the device manager When the USB Serial Port driver has been installed a USB Serial Port appears in the device manager as shown below 16 File Action View Help ls ANE GR PRE gt JE Computer gt Sy Disk drives p A Display adapters bg DVD CD ROM drives gt g IDE ATA ATAPI controllers M Mice and
73. to 224 ASCII characters in the second field If a longer message than this is entered it will be truncated to 224 characters before being saved When Autosave is on the last comment entered if any will be used for all subsequently saved files Note that comments can be retrospectively edited using the Header Edit module These comments are shown in the processing modules when the user is prompted to choose a file to analyse to aid file selection and are printed on the results pages of processed data Clicking the Save button saves the last acquired sweep data to disk as a SEG D format Sandwich Box format file file extension VFS and additionally as a SEG Y or Testif i format file if this has been selected on the Parameters Acquisition tab 69 The second part of the filename is a three digit number starting at 000 and incrementing by 1 each time a file is saved This is done automatically by the software Selecting Save amp Process saves the record as described above and then launches the processing module to process the record 70 Print Selecting the Print icon either prints the currently visible window or saves it as a graphics file depending on the selected print option in the processing parameters When the first graphics file is saved the user is prompted to select a folder in which to save the data The filename is generated automatically in the format xxxxaaaa fff Subsequently saved graphics files are saved in the sa
74. to7 5 0 8831 1 12084 00 2 22 zi 13 0 12 rsweo or arso ra9s0 rzaeel01 20 ie foz fies 160 somes or eers teroa rrzrejo2 ir fis fio fao as 8 5t09 0 0 8732 14991 8 01095 07 885 sofia ar fos 17 287 323 9 5 to 10 0 anlon fos fos fms as oa Summary 07 a 1 11 357 00 This shows a retained Results Window Note that the icons on the Results Window are greyed out but the Window can be closed using the Operating System controls at the top right corner of the Window 63 64 Multi Vibrator Processing This module may be used to superimpose plots from a number of vibrators on the same graphs This is useful for a comparison of a number of different vibrators or Sweeps When the module is launched it will show blank plots Sweep data can be added and will be saved even when the module is exited unless it is specifically deleted by the user allowing vibrators to be tested and their results added to the Multi Plot module one at a time Only the envelope of the Correlation Wavelet dB plot is shown for clarity T Multi Vib Processing x gt MENT WIE x a mi RETAIN EXIT Multi Swee Anal sis i p y Sweep 1 Sandwich_Box_Test_Data Sweep 2 Processed on 4th July 2014 at 11 35 34 am l Sweep 3 Recorded on 1st April 05 at 12 02 00 pm Sweep 4 User Comments Hold Down daN Peak Force daN vib First sweep on new z 16910 21360 ground vib 2 Drive Level Target Force da
75. wich Bos 303 Browse Directory tor National Instruments products Browse After the runtime engine and Sandwich Box software have been installed the PC must be restarted You must restart your computer to complete this operation F you need to install hardware now shut down the computer If you choose to restart later restart your computer before running any of this When the computer has been restarted the software may be used to process data acquired on a different PC If the PC is to be used to acquire data using a Sandwich Box then the USB driver must be installed Note for Windows 8 users When installing the Sandwich Box software on a Windows 8 PC an extra window is displayed with the following warning Disable Windows Fast Startup Disable Windows fast startup to prevent probleme with installing or removing hardware The fast startup capability introduced in Microsoft Windows G may cause problems with installing ar removing hardware Natonal Instruments recommends disabling Windows fast startup For more information about fast startup click the following Ink or visit n coraemto and enter the Into Code wink astS tartup Windows Fast Startup Information Disable Windows fast startup to prevent probleme with installing or removing hardware lt lt Back Mext gt gt Cancel lt is not necessary to disable Fast Startup for the Sandwich Box so the box should be unticked as shown above and installati
76. y h Em AB oon all 7 EE RESET SELFTEST PARAMS HRS WP AOKITOR ACONRE AE TEST PROCESS MULTIVIE HEADER SHE FRINT Acquisition Parameters Channel Allocation Processing Parameters Sweep Controller Channel Allocation Force Channel Name Acc Mounted Sensitivity Weighting Input Input Maximum 16 characters Voltage On mig To Type Signal Channel 1 Baseplate 34 40 Channel Mass Mass 32 30 Channel 3 Vib Reference Sal Votage _ rl Channel 4 Wireline Force sim F Channel5 Baseplate acc BP sim W Channel6 hass acc Mass sim W Channel Channel Off Voltage W Channel8 Timebreak Off Voltage W Channel9 SW Box Force The parameters are listed in columns If an independent accelerometer is attached to a channel then the accelerometer voltage should be switched on and the user should enter the accelerometer sensitivity and indicate whether the accelerometer is mounted on the mass or baseplate If there is more than one accelerometer on the mass or baseplate then the user also has to enter a weighting value to apply to the accelerometer signal lf the signal attached to the channel is not an independent accelerometer then the accelerometer voltage should be switched off in which case the Input Signal and sometimes Input Type controls are displayed The options available in the Input Signal list are dependent on the type of vibrator electronics selected on the Sweep Controller tab The Input Type control selects wheth
77. y Description 1 2 Accelerometer mounts to allow independent accelerometers to be mounted in the receptacles on Pelton accelerometers 2 2 Thumbscrews for above 3 1 Three metre long Pelton Vib Pro reference cable 20 The Vib Pro reference cable should be used to connect a Vib Pro unit which is configured as a sweep generator to the Sandwich Box Note that this cable connects the True Reference and Timebreak signals to the Sandwich Box Force Two A cable is available to connect the Service cable output of the Force Two vibrator electronics to the Sandwich Box The signals connected are the Sim Mass and Baseplate accelerometers Vibrator Reference and Timebreak signals Item Qty Description 1 1 A one metre long cable to connect the Force Two DB15 test connector to the Sandwich Box 21 Launching the Software The programme is launched by navigating to Start All Programs Sandwich Box 303 and clicking the line Sandwich Box 303 Intel JKI p Maintenance M Microsoft Office Microsoft Silverlight Microsoft Works k National Instruments Chris Woodward Documents Pictures Norton Internet Security PerformanceTest 64 bit k Pico Technology k Samsung Magician M Sandwich Box 202c k Sandwich Box 203 p Sandwich Box 300b JD Sandwich Box 300c JD Sandwich Box 301 Jh Sandwich Box 302 J Sandwich Box 303 Music Computer Control Panel Devices and Printers Default Programs Help and Support

Sandwich Box Mk3 - Verif-i

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