Jeulin 223 008 Mode D'emploi page 44

Ultrasounds
Moduson table
Ref :
223 008
1 Directivity of ultrasonic waves
Introduction: The purpose of the experiment is to demonstrate the directional effect of
ultrasonic waves and to define the notion of « sound radiation ».
1.1 Step 1: Setup

The transmitter is connected to a 15V power source. It is set at the transmission maximum
and powered up in Continuous mode. It is positioned at the centre O of the arc-shaped
recess and it transmits ultrasonic waves towards the graduation zero.
The receiver is positioned in the circular recess closest to the transmitter (radius = 15 cm) in
which it can be moved. It is connected by means of a shielded cable to the vertical input of
the oscilloscope.


ENGLISH
The system is set up as follows:
15 V
Material :
- MODUSON main ultrasonic transmitter
- One ultrasonic receiver
- MODUSON moulded PVC table (two elements)
- 0–15V stabilised variable power supply
- Oscilloscope
- Banana-to-BNC adapter cable
Setup schematic
O
Emitter
E
θ θ
R
Receiver
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