Manuel d utilisation dll ap_int_usb_fr rév7
Contents
1. NIQUE Serveur soci t fabrication Manuel d utilisation dll ap_int usb fr r v6 C UR Menu les Ultrasons Page 4 sur 7 LECOEUR ELECTRONIQUE Serveur soci t fabrication Manuel d utilisation dll ap_int usb fr r v6 Lan Init usb Usb init init usb usb init Channel channel Id code id code Prf prf Echo start echo start Pulse delay delay Filter Mode filter mode pulse mon gain voltage Gain Voltage Width width Echo start mode echo start mode Scale delay scale delay Wave wave Gate position position Gate width sate width Gate hight gate hight Relays relays gate Alarm filter alarm filter Measures measures les Ultrasons Serveur soci t fabrication Manuel d utilisation dll ap_int_ush_fi r v6 LECOEUR ELECTRONIQUE Initialise the USB2 connection Set the current channel Hardware s mye Out ee 1 reading PRF adjustment In 1 PRF kHz Echo start In 1 Echo start position us inhibition In 2 ne width us In 1 0 echo start OFF Delay Filter setting and In 1 filter single double In 2 1 single crystal 0 double crystal crystal Mode Gain adjustment In 1 gain dB Po Pulse voltage 10 lt In 1 lt 230 V D adjustment Pulse width O0 lt In 1 lt 255 polari In 2 0 100 echo start threshold a2. djustment Select Wave to In 1 0 rectified 1 negative 2 positive ee control In 1 Gate number 1 3 In 2 Gate position us Gate position Gate width In 1 Gate number 1 3 In 2 Gate width us Gate height In 1 Gate number 1 3 pe In 2 Gate height Alarm on off In 1 bitO Gatel bit Gate2 bit2 Gate3 bit value 0 alarm on appear disapp In 1 Gate number 1 3 In 2 Number of shots before alarm Out 2 alarmel MSB amplitude LSB Out 3 alarme2 MSB amplitude2 LSB Out 4 alarme3 MSB amplitude3 LSB Out 5 distancel step of 12 5ns Out 6 distance2 step of 12 5ns Out 1 distance3 step of 12 5ns Strike before alarm Gates measures No alarm 0 Page 5 sur 7 A scan Ascan Get a scans In 1 0 HF 1 A scan Graphe a scan ascan coming from the In 2 Retentivity display 0 255 Out 1 1 timeout no A scan 12bit analog to In 3 Number of samples digital converter In 4 A scan wave 0 full rectified 1 negative 2 positive Help help Function list Graphe U8 ASCII code Version version Software Version Load configuration Load a In 1 Number of channel load configuration configuration file coming from the directory Getcounter getcounter Setcounter setcounter Resetcounter resetcounter Counter divider counter divider A scan counter SamplingFreq Mod
3. e samplingfreq mode samplingfreqmode Scale A scan counter Dac dac c saphirp ustcad Read counter x Set counter x to 8388608 Reset counter x Divide the frequency of the counter x Get a frame of several A scan synchronized on counters Change the sampling frequency Define the number of samples of the frame Program the DAC curve 5 A scan counter function This function read a frame of several A scan between 2 dll calls These A scan are sampled on 8bit and stored in real time inside a fifo of 512kO The frequency of the storage depend of the counters frequency which can be divided by the counter divider function USBOXS stores the current A scan when coder frequency divide by counter divider generates a pulse which is synchronized on the next PRF That s why it s important to define Prf upper then coder frequency les Ultrasons LECOEUR ELECTRONIQUE In 1 counter 1 2 Out 1 LSB Out 2 MSB In 1 counter 1 2 In 2 divider Graphe U8 Out 1 number of samples stored In 1 0 160 1 80 2 40 3 20 4 10MHz In 2 O strapped 1 disconnected pulse receiver If frequency is different of 830MHz filter is set to broadband In 1 Step of 25ns Note It can be different of the A scan A scan counter function In 1 0 Dac OFF 1 Dac ON Graphe Dac curve function Serveur soci t fabrication Manuel d utilisation dll ap_i
4. lun LECOEUR ELECTRONIQUE 19 rue de Courtenay 45220 CHUELLES FRANCE Tel 33 0 2 38 94 28 30 mailto info lecoeur electronique com Fax 33 0 2 38 94 29 67 hpp lecoeur electronique http www lecoeur electronique com S BERTOLOTTO 1304 2004 Labview DIT Ap int usb Manuel d utilisation dll ap int usb fr r v7 doc r vision 7 le O1 mars 2005 Labview DIL_Ap_int_usb V16 dll Ap_int_usb dll les Ultrasons Page sur LECOEUR ELECTRONIQUE Serveur soci t fabrication Manuel d utilisation dll ap_int_usb_fr r v6 cur I Menu les Ultrasons LECOEUR ELECTRONIQUE Serveur soci t fabrication Manuel d utilisation dll ap_int_usb_fr r v6 2 170 ProductNumber ChannelNumber Function Graphe tableau Graphe lenght 3 declaration int32 ApintUsb ulnt32 ProductNumber ulnt32 ChannelNumber char Function float64 Inl float64 In2 float64 In3 float64 In4 float64 In5 float64 In6 int16 Outl int16 Out2 int16 Out3 int16 Out4 intl6 Outs int16 Out6 int32 Graphe int32 len Note C standard call 4 description First of all ProductNumber and ChannelNumber are 2 parameters which must be set each time to 0 USBox l USBoxS 0 7 For an 8 multi channel system Note e Up case letter and space are important oe Code return l is function is recognized else 0 It s not an error code les Ultrasons Page 3 sur 7 LECOEUR ELECTRO
5. nt_usb_fr r v6 e The frame begins by 2 header bytes FF 255 All others are always different of FF e Coders values are stored on 3 bytes with MSB of each byte set to 0 It s a base of 128 Coder l value counter line3 counter line4 128 counter lineS 16384 e The frame length is defined by the Scale A scan counter function Note Scale A scan counter is set by step of 25ns but A scan length is returned by step of the period defined by SamplingF req Mode 6 25ns 12 5ns 25ns 50ns Example You want a sampling of 10us 10000ns at SOMhz 12 5ns e Scale A scan counter In l 10000ns 25ns 400 oe One frame length of A scan counter 10000ns 12 5ns 800 e The 19 1 bytes are replaced by headers coders amplitudes etc The 18 first bytes of the A scan are l FF header 2 FF header 3 counter 1 LSByte 4 counter 1 5 counter 1 MSByte 6 counter 2 LSByte 7 counter 2 8 counter 2 MSByte 9 amplitude gate 1 10 amplitude gate 2 11 amplitude gate 3 12 distance gate 1 LSB 13 distance gate 1 MSB 14 distance gate 2 LSB 15 distance gate 2 MSB 16 distance gate 3 LSB 17 distance gate 3 MSB 18 number of samples LSB 19 number of samples MSB 20 samplel 1 sample of As scan 21 sample2 22 23 24 25 6 Coders interface Menu USBoxS manage 2 biphasic coders HEDS 5701 A00 for example but to adapt TTL signals to 2 5 Vcc an internal
6. resistors divider is wired 220 330Q LECOEUR LECTRONIQUE company suggest to add a Schmitt trigger 74AC 14 between USBoxS and coders with an external power supply les Ultrasons LECOEUR ELECTRONIQUE Serveur soci t fabrication Manuel d utilisation dll ap_int usb fr r v6 Page 7 sur 7 USBoxS MACH Biphasic coder A Menu 7 Dac curve function The USBoxS DAC curve is 166us depth It programmable by 256 step of 650ns To program it send 256 gain values dB through Graphe and set 1 in In 1 Take care if you want to adjust the gain after programming a Dac curve don t use Gain function but reprogram a new Dac curve with an offset Using Gain function while a Dac curve will set it off Over the 166us the gain of Graphe 0 is reprogrammed The 1 point of the curve Graphe 0 correspond to the transmitter shot Original sync Menu les Ultrasons LECOEUR ELECTRONIQUE Serveur soci t fabrication Manuel d utilisation dll ap_int_usb_fr r v6
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