Please, a couple questions before.
How do you introduce your field signal into de computer?
Are you using a GPIB to access the oscilloscope?
Are you using any kind of Data acquisition system?
--
Francisco Javier Fernandez Luna
Ingeniero Tec. Industrial en Electronica.
Tel: 619 81 98 31
franciscojavier.luna@uca.es
ó pacoluna@postmark.net
Would you like your answer in spanish? Please, let me know.
Si prefiere que conteste a sus preguntas en español, por favor, hagamelo
saber.
"Let's make things better" (PHILIPS)
escribió en el mensaje de noticias
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> i'm know very little about labview (see previous message, best way to
> learn labview?) and need help creating a VI.
>
> i am doing an experiment where i need to meas
ure the time elasped
> between a transmitted and reflected pulse. these pulses are generated
> (transmitted) and sensed (reflected) by an ultrasonic transducer. We
> supply the power to the transducer by setting 2 MHZ (resonant frequency
> of transducer) and 10 VPP (for a voltage burst) on a function
> generator. on our oscillscope, we get a waveform of the transmited
> pulse and then a waveform of the reflected pulse and then smaller and
> smaller reflected pulses behind it. When we try to put this same graph
> on labview by using the "analog input VI" in the NI manual (p. 9-27), we
> don't get the same result.
> we get this wave that is scrunched in the corner and it doesn't move
> extend past the left end of the graph. it might be a trigger problem
> but i have no idea how to fix it. Are there any already created VIs
> that can provide the graph that we have described (shows the transmitted
> pulse and then smaller reflected pulses afterward)? any help would be
> apppreciated
.
>