USER MANUAL US-Key - Lecoeur Electronique
Contents
1. les ultrasons 3 GRAPHICAL PART DETAILS CHANNEL 1 Longitudinal 1 Ascan80MHz w 3 1 VISUALIZATION MODES There are three visualization modes for the signal L lec oeUrccroniaue 19 Rue de Courtenay 45220 CHUELLES T l 02 38 94 28 30 Fax 02 38 94 29 67 Email info lecoeur electronique com les uitrasons y CHANNEL 1 Longitudinal 1 Ascan 80 MHz w 2 Retentivity display v Ascan 80 MHz HF 80 MHz Gain Del iti i T LUS polidi iy pan __ Scale EE Position 1 Width 1 Height 1 J 25 50 J 0 00 J 2 48 h dB ps us div Selection ps ps F4 B Scan ad Auxilaries d tthe ERJ Q amp fxi e pmj 3 1 1 A SCAN Mode This representation makes it possible to detect the presence of a defect to determine its position and to evaluate its reflection capacity The signal then posted is a signal digitized at 80MHz on the time base and represented by 1000 samples Moreover a peaks capture system allows the measurement of the amplitudes with a precision equivalent to a sampling at very high frequency 3 1 2 Remanent Mode The characteristic of this function is to give priority to posting in order to be able to carry out a visual monitoring at recurrence frequencies incompatible with our visual capacities In that way remanent visualization displays only one sequence every N others are not lost but sorted to only post the best one greatest echoes seen during the acquisit2. L lec oeUrseccronique 19 Rue de Courtenay 45220 CHUELLES T l 02 38 94 28 30 Fax 02 38 94 29 67 Email info lecoeur electronique com les uitrasons y USER MANUAL Rev 2 0 September 2010 Copyright Lecoeur Electronique corporation all rights reserved lec oeUrseccrona ue 19 Rue de Courtenay 45220 CHUELLES T l 02 38 94 28 30 Fax 02 38 94 29 67 Email info lecoeur electronique com INTRODUCTION GENERAL OVERVIEW 2 1 PAREMETER SETTING 3 GRAPHICAL PART DETAILS 3 1 VISUALIZATION MODES 3 1 1 A SCAN Mode 3 1 2 Remanent Mode 3 1 3 80MHz A SCAN Mode 3 1 4 80MHz RF Mode 3 2 SET CHANNEL 3 3 SET GAIN 3 4 SET DELAY 4 PARAMETERS SETTING DETAILS D 4 1 GAIN 4 2 DELAY 4 3 SCALE 4 4 GATES 4 4 1 Position 4 4 2 Height 5 DETAILS OF THE MENU 5 1 PRINT 5 2 MODE CHOICE 5 3 SPECTRUM 5 4 GATES 5 4 1 Amplitude 5 4 2 Alarmes releases 5 4 3 Number of strikes before alarm 5 4 4 R glage Echo start 5 5 DAC 5 6 PULSER 5 6 1 Voltage 5 6 2 Emission width 5 6 3 Repetition Frequency 5 6 4 Phase Delay 5 7 AUXILIARIES 5 7 1 Filters 5 7 2 Standard of Alternation 5 7 3 Report 5 7 4 Wizard 5 8 BSCAN 5 9 ZOOM 5 10 SETUP 5 11 SAVE 5 12 LOAD 5 13 DESTROY 6 ALARMS DETAILS TABLE OF CONTENTS les uitrasons y Z l COCUFecctronique 19 Rue de Courtenay 45220 CHUELLES T l 02 38 94 28 30 Fax
3. Gate Position 1 Width 1 Height 1 J250 Foo Joan Pe jon imo 1 2 3 dB hs us div Selection ps FA escent aniein og Ti or Ql LX a Jem The bottom part of the screen informs you about the significant parameters which characterize the visualized signal Gain Delay These data indicate the current settings and authorize the entry of a new value The three gates are positioned by selecting a number and entering the desired characteristics for each one The adjustment of the gates is independent and will be studied later on The drop down menu on left side makes possible to select the time mode or outdistances mode L lec oeUrsccroniaue 19 Rue de Courtenay 45220 CHUELLES T l 02 38 94 28 30 Fax 02 38 94 29 67 Email info lecoeur electronique com les vitrasons CHANNEL 1 Longitudinal 1 Ascan 80 MHz w _ Gain Delay ___ Scale Gate Position 1 Width 1 Height 1 J2550 Foo 24 Ve io ion dB ps us div Selection ps ps 2 1 PAREMETER SETTING Any modifications of values are carried out easily using the mouse or with the function key that is associated for F1 to F12 The high and low navigation keys make it possible to add or cut off the incrementing step associated to each displayed variable This handling allows a finer adjustment Z lecoeur electronique 19 Rue de Courtenay 45220 CHUELLES T l 02 38 94 28 30 Fax 02 38 94 29 67 Email info lecoeur electronique com
4. allows setting the profit of the signal Under this signal elevators authorise the adjustments of the delay and the scale of the base of time Two constants located on the right of these elevators make it possible respectively to fix the maximum values of these two parameters The selection of the visualized channel as well as the choice of the visualization mode is done by two unrolling menus located above the graph Z l COCUFeccironique les uitrasons y 19 Rue de Courtenay 45220 CHUELLES T l 02 38 94 28 30 Fax 02 38 94 29 67 Email info lecoeur electronique com CHANNEL 1 Longitudinal 1 Ascan 80 MHz w p _ Gain Delay Scale Gate Position 1 Width 1 Height 1 DT 1 92550 Joo 9 24s dB ps ps div Selection ys PA escan tal anion d Ti 17 Te x a Jmm The part of right hand side of the screen relates to the posting of measurements of amplitude and distance in the three gates The affected colours allow a better correlation between the graph and these parameters The piloting of the alarms represented by indicators will be described later on The unrolling graph located below these parameters controls in the course of time the amplitudes acquired in the three gates L lec oeUrccroniaue 19 Rue de Courtenay 45220 CHUELLES T l 02 38 94 28 30 Fax 02 38 94 29 67 Email info lecoeur electronique com les uitrasons y CHANNEL 1 Longitudinal 1 Ascan 80 MHz ow Gain Delay Scale
5. les uitrasons y 19 Rue de Courtenay 45220 CHUELLES T l 02 38 94 28 30 Fax 02 38 94 29 67 Email info lecoeur electronique com 5 DETAILS OF THE MENU FS oO B Scan Auxilaries d e los Ale Lx 6 hmm 5 1 PRINT The printing of this panel is accessible by the small push rod located on the left screen A simple pressure launches an automatique impression For a better reading of prints the colours inversion is automatic in order to make the sheet printed as pleasant as possible 5 2 MODE CHOICE F8 a Q Calib F8 B Scan ka Auxilaries 2000 The drop down menu located on the left of the screen determines the display unit of the measurements millimetres or micro seconds The formula used is N mm speed m s time micro 2 000 The choice of the distance mode makes it possible to visualize the ultrasound speed When distance mode is chosen Calib button appears This new function allows you to calibrate a new velocity and offset 15 Z lecoeur tronique 19 Rue de Courtenay 45220 CHUELLES T l 02 38 94 28 30 Fax 02 38 94 29 67 Email info lecoeur electronique com les uitrasons y 5 2 1 Calibration Time of flight Gate 1 us Distance 1 measured mm 16 875 6 875 Time of flight Gate 2 us Distance 2 measured mm EEE 13 375 Time of flight Gate 3 us Distance 3 measured mm 19 85 19 85 Current Veloc
6. step of this parameter is 0 1 dB 3 4 SET DELAY The elevator associated to this variable is located just below the graph and is represented with a green colour This parameter is complementary to scale It shifts the ultrasonic sequence towards the left in order to present at posting only a part of this one The delay is expressed in millimetres or microsecond The maximum value of the delay is a function of the scale This value is calculated according the following low 10 Scale MaxDelay 390 micro seconds 11 Z lec oeUrccroniaue 19 Rue de Courtenay 45220 CHUELLES T l 02 38 94 28 30 Fax 02 38 94 29 67 Email info lecoeur electronique com les uitrasons y 4 PARAMETERS SETTING DETAILS Gain Delay Scale Gate Position 1 Width 1 Heigh creer C ght 1 La 6 gt 4 92550 000 9 248 ae dB us us div Selection ps ps 4 1 GAIN This parameter indicates the current value of the gain and allows a finer adjustment of this parameter This variable is accessible using the mouse but also using the keyboard in pressing the F1 function key that is associated to it _ Gain J 25 50 dB 4 2 DELAY This parameter indicates the current value of the delay applied to the visualized signal As for the gain to reach this parameter that way allows a more precise adjustment This variable is accessible using the key from F2 function or the mouse The delay is expressed in millimetres if the d
7. the bandwidth is equal to the central frequency a filter of centre frequency 5 MHz will thus have a low cut off frequency slightly higher than 3 MHz logarithmic scale and a high cut off frequency slightly higher than 8 MHz A position broad band is available for the use of deadened transducers 125MHz 1 25 MHz A 2 5 MHz 5 MHz 10 MHz El v Broad Band 26 L lec oeUrccironiaue 19 Rue de Courtenay 45220 CHUELLES T l 02 38 94 28 30 Fax 02 38 94 29 67 Email info lecoeur electronique com les uitrasons y Note the frequencies available are 1 25 MHz 2 5 MHz 5 MHz 10 MHz Broad band 5 7 2 Standard of Alternation Aitemance v Full rectified Negative wave Positive wave The high frequency signal from the ultrasonic probe undergoes a rectification in order to facilitate its analysis this operation can be done by three different ways cut the negative part of the signal and add it to positive part rectification double alternation or withdraw the negative part rectification simple alternation or finally withdraw the positive part and represent only the negative half waves rectification simple alternation negative The modification of the polarity of the detector influences the whole data processing sequence of the signal not only posting 5 7 3 Report The report button gives access to a summary table of the whole settings on each channels This screen could then be printed constantly Y
8. 02 38 94 29 67 Email info lecoeur electronique com 7 Features 8 Additional functions les vtrasons L lec oeUrccroniaue 19 Rue de Courtenay 45220 CHUELLES T l 02 38 94 28 30 Fax 02 38 94 29 67 Email info lecoeur electronique com les uitrasons y 1 INTRODUCTION This work is intended to establish a guide of technical reference for users of the US Key system Most of this handbook is devoted to the detail of the menus thus a majority of the screens proposed by the ultrasonic modules appear in it constituting a database precise and easy to consult The US Key is one of the most powerful tools as regards non destructive ultrasonic testing Its modular concept makes it evolutionary and easy to use It s a precise measuring instrument L lec oeUrsccroniaue 19 Rue de Courtenay 45220 CHUELLES T l 02 38 94 28 30 Fax 02 38 94 29 67 Email info lecoeur electronique com les uitrasons y 2 GENERAL OVERVIEW CHANNEL 1 Longitudinal 1 Ascan 80 MHz w Gain Delay Scale Gate Position 1 92550 9 ooo 248 ee dB us us div Selection Height 1 nA aii CRUE EE The display screen is divided into four parts A first graphic part one second indicating alarms and amplitudes a third which is interested in the adjustments and a last which gives access to a menu The central part is assigned to posting of the A scan signal On right hand side of the graph an elevator
9. HUELLES T l 02 38 94 28 30 Fax 02 38 94 29 67 Email info lecoeur electronique com les uitrasons y Inhibition S 8 00 The inhibition of echo start is a temporal zone beginning with the emission and witch width is adjustable using this function During this period any event are ignored and are not taken as synchronization echo Duration ary 4 00 The width of inhibition must be sufficient to avoid inopportune releases in water but does not have to exceed the echo of synchronization echo of entry Once the system fixed on the entry of the part all measurements positions widths etc Will have the echo of entry as time origin Polarity a The ultrasonic signal resulting from a transducer being bipolar it is appropriate to choose which alternation will be used for the release of the echo start The function polarity proposes the choice between the positive or negative half wave This choice must take place starting from the detailed examination of the echo of entry the first alternation whose amplitude is generally the one it is necessary to use for synchronization 22 L lec oeUrsseccroniaue 19 Rue de Courtenay 45220 CHUELLES T l 02 38 94 28 30 Fax 02 38 94 29 67 Email info lecoeur electronique com les uitrasons y 5 5 DAC Compensation Amplitude Distance This function makes possible to compensate the amplitude of echoes at moments precise and selectable by the user Actual
10. ate Position 1 Width 1 Height 1 J2s50 oo za Ve NE jam dB us us div Selection ps ps 2 sani avis d ns als LXI e The current settings are always accessible and the user can observe the Ascan signal refreshing on the bottom right of the screen 29 L lec oeUrccroniaue 19 Rue de Courtenay 45220 CHUELLES T l 02 38 94 28 30 Fax 02 38 94 29 67 Email info lecoeur electronique com les ultrasons 5 9 ZOOM Scale Gate Position 3 Width 3 Height 3 Ve CN ON ON ps div Selection Hs Fee B scan fa auxtries 4 th i ele _ x W 4 lt 4 This function allows the user to get a bigger A SCAN display 30 L lec oeUrsseccroniaue les ultrasons 19 Rue de Courtenay 45220 CHUELLES T l 02 38 94 28 30 Fax 02 38 94 29 67 Email info lecoeur electronique com 5 10 SETUP The Number of channelsis 1 Firmware Version 4 0 This software can adapt to our whole products Saphir board saphir board onyx box board ruby US BOX Number Of Channels F6 IIRA This is also in this menu that the parameter setting of the number of channels to be used is carried out 31 L lec oeUrsccironiaue 19 Rue de Courtenay 45220 CHUELLES T l 02 38 94 28 30 Fax 02 38 94 29 67 Email info lecoeur electronique com les uitrasons y USER LEVEL Expert nn F4 Setting User In the case of a use of the system by several operator the a
11. ble to modify the value of tension of the emission pulse It determines the energy level transmitted to the transducer during the excitation The voltage may vary from 0 with 230V by step of 5V Note Itis advised to check the emission width after a modification of the power 24 L lec oeUrsccironiaue les uitrasons y 19 Rue de Courtenay 45220 CHUELLES T l 02 38 94 28 30 Fax 02 38 94 29 67 Email info lecoeur electronique com 5 6 2 Emission width Width F 4 The adjustment of the width of the emission pulse makes possible to adapt the frequency spectrum developed by the transmitting assembly to that of the transducer Once this adaptation carried out the transfer of energy between the transmitter and the transducer is maximum This parameter can vary from 0 to 255 Note To regulate the width of emission an echo unsaturated should be posted Enter width 0 and make vary until the amplitude of the echo passes by a maximum The value of the width corresponding to this amplitude is the one that should be preserved It is advised to adjust this parameter for each new transducer or when setting a new value of the power 5 6 3 Repetition Frequency 3 1 00 The recurrence frequency defines the number of ultrasonic shootings to produce in one second The more this frequency is raised the more the examination of the part is precise This parameter cannot be regarded as intrinsic because the choice of its va
12. cording to the selected mode distances or time The amplitude is posted as a percentage of the screen The unrolling graph makes it possible to visualize possible defects during control The colours refer to the gates positioned on the graph 33 L lec oeUrsseccroniaue 19 Rue de Courtenay 45220 CHUELLES T l 02 38 94 28 30 Fax 02 38 94 29 67 Email info lecoeur electronique com 8 Additional functions les uitrasons y CHANNEL 1 Longitudinal 1 Delay Scale Gate Position 3 Width 3 9 000 Jin us us div Selection Height 3 Fe 24 B Scan a auitares q th l ERJ a IL x EEE 34 L lec oeUrsseccronaue 19 Rue de Courtenay 45220 CHUELLES T l 02 38 94 28 30 Fax 02 38 94 29 67 Email info lecoeur electronique com O On Oo po ie LR Base Address HEX 5 38 UsKey detected 0 The Number of channels is Firmware Version 4 0 35 les uitrasons y Z lec ur cronique 19 Rue de Courtenay 45220 CHUELLES T l 02 38 94 28 30 Fax 02 38 94 29 67 Email info lecoeur electronique com Saturation indicator When the anono lip Da a _ _ _ _ _ S EE SE Ee ee This function is only available ETA filter mode not in Scale Gate Position 3 Width 3 A 1 Jz MM Height 3 us Averaging ES Cle 2 IC 36
13. dministrator will have the possibility of limiting the right of access to the various adjustments Note For more safety the access to this type of parameter setting is protected by a password 5 11 SAVE The save makes possible to keep under a selected name the configuration of the channel in progress 5 12 LOAD The load of a configuration on a given channel is possible with this function At that time the system will require of you if you wish to load the digitized A scan This makes possible to superimpose on the visualized signal A scan that was present at the screen at the moment of the save of this configuration If you chose this functionality to return to the visualization of your A scan alone you just have to strike key ESC 5 13 DESTROY This functionality can be use to destroy a configuration saved previously 32 Z lec ur cronique 19 Rue de Courtenay 45220 CHUELLES T l 02 38 94 28 30 Fax 02 38 94 29 67 Email info lecoeur electronique com les vitrasons 6 ALARMS DETAILS The alarms colours allow a better correlation between the visualized signal and the values measured in each gate The indicators announcing possible alarms can be program by the menu with the auxiliary mode ovata This window thus makes it possible to know the amplitudes and the lec ur distances measured in each gate The distances are expressed in millimetre or in microsecond ac
14. ion of the N A scan not posted N is settable by using the last variable remanence length which appears at the validation of this mode 10 L lec oeUrccroniaue les uitrasons y 19 Rue de Courtenay 45220 CHUELLES T l 02 38 94 28 30 Fax 02 38 94 29 67 Email info lecoeur electronique com Using this representation it is possible to visualize events that it would be difficult to see with a traditional posting The efficiency of remanent visualization is a function of the speed of the computer 3 1 3 80MHzA SCAN Mode This visualization is the representation of the rectified signal digitized at 80 MHz on the time base on all the samples 3 1 4 80MHz RF Mode The signal represented is the digitized signal at 80 MHz on the time base and represented by all samples digitalization point by point 3 2 SET CHANNEL If your PC is equipped with several US Key boards you can independently set channels parameters selecting with the drop down menu the one you want to visualize 3 3 SET GAIN The gain of the receiver corresponds to the amplification applied to the signals from the transducer for convenience reasons and standardization it is expressed in decibels This parameter has a dynamics of 80 dB and is adjustable by two elevators One is located on the right graph the other below The variable associated to the last one makes possible to fix the maximum value accessible by the elevator The variation
15. istance mode is selected or in micro second if the time mode is selected This mode is in bottom left of the main panel Delay J 0 00 us 4 3 SCALE The posting scale defines the horizontal graduation on the screen this one proves to be useful to calculate the depth of an ultrasonic indication It is expressed in millimetre per division if the distance mode is validated but can also be posted in microsecond by division if you have chosen the time mode Scale 9 248 us div 12 L lec oeUrccironiaue 19 Rue de Courtenay 45220 CHUELLES T l 02 38 94 28 30 Fax 02 38 94 29 67 Email info lecoeur electronique com les uitrasons y 4 4 GATES Gate Position 1 Width 1 Height 1 qe be ian ia Selection ps ps These four variables are closely dependent According to the number of the selected gate its position its width and its height are associated The setting of the gates is completely independent and each gate is represented by a distinct colour on the graph First is modelled by the blue colour second is associated to the green colour and third to pink These monitors cannot overlap The units of these parameters depends also of the mode time or distance selected 4 4 1 Position This parameter corresponds to the beginning of the temporal window in which will be carried out the real time processing of the ultrasonic signal This variable is easily adjustable while acting on the function key tha
16. ity m s Current offset mm 2000 0 0625 we Proc dure In the main interface 1 Move gate 1 on an echo whose you know the distance in mm 2 Move gate 2 on another echo whose you know the distance in mm In this interface if measures are wrong Calibrate a new velocity 1 Enter the good value in mm in Distance 1 desired 2 Enter the good value in mm in Distance 2 desired 3 Select Calibrate a new velocity A new velocity and offset will be calculated to accord measurement In the top right part the curent distance 1 and distance 2 are displayed in function of curent velocity and offset If these measures are wrong you can enter the desired values in the blue windows and press Calibrate At this moment a new velocity and offset will be calculated to Recalibrate the measures 16 Z lecoeura tronique 19 Rue de Courtenay 45220 CHUELLES T l 02 38 94 28 30 Fax 02 38 94 29 67 Email info lecoeur electronique com les uitrasons y 5 2 2 Trigonometry 100 Time of flight Gate 1 us Distance 1 measured mm 80 6 875 6 875 Time of flight Gate 2 us Distance 2 measured mm ies 13 375 Time of flight Gate 3 us Distance 3 measured mm 19 85 19 85 Current Velocity m s Current offset mm 2000 0 0625 Only for gate 1 after entering angle and thickness mm horizontal lengh L and depth P are displayed ve
17. lates of the echo start settings and of the parameters such as the amplitude and alarms 5 4 1 Amplitude STOP v Total Amplitude Measure Behind Gate Measure The amplitude measurement of the greatest echo present in the gate outputs as an analogical tension varying from 0 to 5V If you want to measure the part of the echo behind the gate it is necessary to choose behind gate mesure if the entire amplitude is wished it is necessary to choose total amplitude measurement To disable the measurement in a monitor is possible by selecting stop 19 L lec oeUrsseccroniaue 19 Rue de Courtenay 45220 CHUELLES T l 02 38 94 28 30 Fax 02 38 94 29 67 Email info lecoeur electronique com les ultrasons 5 4 2 Alarmes releases ve _ EE Alarm Stop F v Alarm on Appears Alarm on Vanish The alarms release is also programmable It means that defect was detected in a gate You can program this parameter so that an alarm corresponds to the detection of an echo in a gate in this case it is necessary to choose the mode Alarms on appears If on the other hand an echo must always be present in a monitor to its disappearance must correspond an alarm it is then necessary to choose Alarm on vanish Last mode being not to carry out any control in a gate you just have to set it to Alarm stop Alarms are modelled by indicators associated each monitor that turn on by respecting the choice of release on each cha
18. lue is always conditioned by the measurement environment kinematic acoustic This parameter can vary from 0 3 Khz to 20 Khz 5 6 4 Phase Delay een 000 ps Phase delay between transmissions constitutes a significant function in the case of a use of multichannel system Indeed all the ultrasonic channels are automatically synchronized on the first one if an acoustic configuration is not compatible with temporally simultaneous emissions it is necessary to diphase some of them This means to shift them regarding to channel 1 It is advised not to place a gate during the emission of another channel elsewhere the cross talk phenomena may appear 23 L lec oeUrsccroniaue 19 Rue de Courtenay 45220 CHUELLES T l 02 38 94 28 30 Fax 02 38 94 29 67 Email info lecoeur electronique com les vitrasons 5 7 AUXILIARIES This function gives the access to a panel that allows setting the filters applied to the signal the polarity The configuration of these parameters is essential to control an object into good conditions E CHANNEL 1 Longitudinal 1 Ascan 80 MHz w Gain Dela Scale Gate Position 3 Width 3 Height 3 y _ _ 92550 Jooo 248 dB ps ps div Selection ps ps mode EJ reflexion il H TETE El r mu gt PA esena avcm ts oes ae LXT o em 5 7 1 Filters The electronic filters proposed in this menu are filters of RLC type witch quality factor is 1 This means that
19. ly it adds or cuts off a value from the gain into the visualized signals DAC Curve is the layout point by point various gain along the time Smoothing is an interpolation between the selected points What thus avoids having a standard curve crenel Using the DAC To create a point you just have to move the Y axis of the cursor to the chosen place for the first point and then to take X axis of the cursor and increase or decrease the Gain Incrementing or the decrementing the value of the gain determines the co ordinates of a new or an existing point DAC Curve with smoothing CHANNEL 1 Longitudinal 1 Ascan 80 MHz w lay Scale Gate Position 3 Width 3 Height 3 Del Xoo Jz jam EN mm mm div Selection mm mm 2000 aO esan i ui g LUE als XI e ee 23 L lec oeUrsccroniaue les uitrasons y 19 Rue de Courtenay 45220 CHUELLES T l 02 38 94 28 30 Fax 02 38 94 29 67 Email info lecoeur electronique com 5 6 PULSER CHANNEL 1 Longitudinal1 Ascan80MHz w Gain Delay Scale Gate g O BOEEN ET 92550 J ooo 248 T dB ps s div Selection ps Position 3 Width 3 Height 3 ps Voltage V Width PRE KHz Pulse a Juo Joo us 4 so a ed tm ov Oee M This menu allows the access to different parameters of the pulser such as tension width or frequency of recurrence 5 6 1 Voltage Voltage V F 150 The function Voltage makes possi
20. nnel Amplitude 1 Distance 1 Amplitude 2 Distance 2 Amplitude 3 Distance 3 20 L lec oeUrsccroniaue les ultrasons 19 Rue de Courtenay 45220 CHUELLES T l 02 38 94 28 30 Fax 02 38 94 29 67 Email info lecoeur electronique com 5 4 3 Number of strikes before alarm This value makes it possible to make sure that the signal detected in the door is a real defect and is not a parasite within the signal Indeed it is necessary to wait to have N consecutive times the echo in the door to make sure that alarm truly corresponds to a defect This number N is thus settable in this window and has a dynamics from 0 to 255 5 4 4 R glage Echo start When an immersed transducer is used and you want to free the measurement from the variations of the water column between it and the part to examine it is advised to use the function echo start This function correctly set synchronizes visualization as well as gates on the echo of entry in the object whatever is the variations water column and events able to occur during the travel of the ultrasonic beam in water The echo start door thus defines a temporal space during which US Key will seek an echo of synchronization This time is determined by a start INHIBITION and duration in this interval any echo which amplitude is higher than 30 of the screen will be taken to synchronize the gates 21 L lec oeUrsccironiaue 19 Rue de Courtenay 45220 C
21. ou can have two representations either channel by channel or all the gathered ways Here an example of setting report on a mono channel system 27 L lec oeUrseccroniaue 19 Rue de Courtenay 45220 CHUELLES T l 02 38 94 28 30 Fax 02 38 94 29 67 Email info lecoeur electronique com les vtrasons 1 1 8 US Settings Repport Date 18 01 2010 Time 08 46 CHANNEL 1 Longitudinall w TRANSMITTER VOLTAGE 15000 V WIDTH 4 00 ALTERNANCE Rectified GAIN 25 50 DB RECEIVER FILTER Broad Band Averaging 1 00 MODE Pulse echo PRE 100 KHz PukeDely 0 00 us TIME BASE Scale 248 lus Velocity 2000 00 m s Delay 0 00 fus Unit Jus 1 18 US Settings Repport Date 18 01 2010 Time 08 43 Channel Channel4 Channels Channel Channel Channel8 VOLTAGE WIDTH ALTERNANCE Broad Band LE LLL J LECOEUR ELECTRONIQUE 28 L lec oeUrsseccroniaue 19 Rue de Courtenay 45220 CHUELLES T l 02 38 94 28 30 Fax 02 38 94 29 67 Email info lecoeur electronique com les uitrasons y 5 7 4 Wizard The wizard option allows you to grow up the gain to 100 Db but only for the screen 5 8 BSCAN The Bscan function allows an outline in Bscan unrolling of the Ascan signal This option is particularly practical if you want to observe a variation in the signal representative of the presence of a defect or another variation of form Gain Delay Scale G
22. rsus distance d 17 L lec oeU accroniae les uitrasons y 19 Rue de Courtenay 45220 CHUELLES T l 02 38 94 28 30 Fax 02 38 94 29 67 Email info lecoeur electronique com 5 3 SPECTRUM CHANNEL1 Longitudinall W HF80MHz w Gain Delay Gate Position 1 Width 1 Height 1 Jasso Mises Jin Ve ia iam dB mm i Selection mm mm jao nO psen faeere d Qe LXI es This image is the spectral representation of the RF signal and is used amongst other things to determine the resonance frequency of the sensor and its bandwidth to 3 dB and 6 dB The cursor posted in this image is easily movable you just have to seek the tool modelled by a white cross to position it on the cursor and to bring it to the frequency on the spectrum corresponding to the sensor Thus the values posted below the graph will correspond to the characteristics of the sensor This function can be used to control the state of the sensor you use 18 L lec oeUrsseccroniaue 19 Rue de Courtenay 45220 CHUELLES T l 02 38 94 28 30 Fax 02 38 94 29 67 Email info lecoeur electronique com les uitrasons y 5 4 GATES CHANNEL1 Longitudinall W HF80MHz w aoo Gain Delay Scale Gate Relais 3 dE ar 5 2 I ar FS S ooo BP E a dB mm mm div Selection yao LE 6 Scan M Aviaries 4 Li Eu aje Lx eo mm The activation of this parameter involves the opening of a window under the graph that re
23. t is associated to or using the mouse As each adjustment of monitor is independent the function keys which are associated their characteristics are themselves different Position 1 1 ps The position is expressed in millimetre or microsecond according to the selected mode time or distance 4 4 1 1 Width The width of the monitor corresponds to the time during which the ultrasonic signals will be treated in real time and will measure positions alarms and analogical outputs The width is expressed in millimetre or microsecond according to the selected mode time or distance Width 1 us 13 L l COCUFeccironique 19 Rue de Courtenay 45220 CHUELLES T l 02 38 94 28 30 Fax 02 38 94 29 67 Email info lecoeur electronique com les uitrasons y 4 4 2 Height The height of the monitor fixes a level of amplitude above or below which the ultrasonic echoes will be treated different ways The release of alarms can be regulated a study of the menu will explain it later on page 15 paragraph 4 6 2 Height 1 ER This variable is always expressed as a percentage height of the screen NB You can use some cursors to adjust your gates For each gates there are two cursors under the Ascan who allow you to adjust position and width At the left of the Ascan a third cursor allows you to adjust the height of the gates the color of these cursors is the same of the gate 14 L lec uUr ccroniaue
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