Jeulin 223 008 Mode D'emploi page 60

Ultrasounds
Moduson table
Ref :
223 008
2.2 Step 2: Protocol
 Definitions
On the above schematic, the symbols have the following meanings:
 Measurements :
Different values are assigned to i by moving the transmitter in its guide and the receiver
position to be used to obtain the direction of the radiation reflected on the mirror is
determined.
How do you identify this direction?
What are the oscilloscope settings?
Describe how a measurement is performed.
Note : The presence of other peaks (with lower amplitudes) is observed. This is due to complex
phenomena called diffraction.
Record the results in the table below:
in deg.
in deg.
 Plot the corresponding curve on the graph below:
Graphic representation of the function i=f(r)
ENGLISH
•
On is the perpendicular to the mirror
•
i is the angle of incidence between the incident sound radiation EO and the
perpendicular to the mirror On
•
r is the angle of reflection between the reflected sound radiation OR and the
perpendicular to the mirror On
•
for vertical amplification :
•
or horizontal sweep
i
10 15
r
:
20 25 30
57
40 50 60