Abstract: A sonar includes a first part and a second part linked by an electric carrier cable configured to mechanically support the second part and allow the two parts of the sonar to exchange signals comprising: a unidirectional signal, called electrical power supply signal, unidirectional signals, called signals to be emitted, transmitted by the first part to the second part for them to be transmitted in the form of acoustic waves, and a bidirectional signal conveying communication data, the sonar wherein the first part comprises signal combination means configured for the signals to be transmitted simultaneously over the electric carrier cable, and in that the second part comprises separation means allowing the recovery of each of the signals transmitted over the electric carrier cable.

Abstract: A sonar includes a first part and a second part linked by an electric carrier cable configured to mechanically support the second part and allow the two parts of the sonar to exchange signals comprising: a unidirectional signal, called electrical power supply signal, unidirectional signals, called signals to be emitted, transmitted by the first part to the second part for them to be transmitted in the form of acoustic waves, and a bidirectional signal conveying communication data, the sonar wherein the first part comprises signal combination means configured for the signals to be transmitted simultaneously over the electric carrier cable, and in that the second part comprises separation means allowing the recovery of each of the signals transmitted over the electric carrier cable.

Abstract: A device for the automatic precorrection of non-linearities of a power amplification chain in a common channel television transmitter. The device has a first circuit for detecting the component to be corrected prior to amplification and addition of the components to be simultaneously amplified, a circuit for selecting the same components after amplification in a common channel, an attenuator of the latter component having an attenuation coefficient equal to the linear part of the amplification chain gain, a second detection circuit, an analog divider receiving the two detected components, whereof the output is coupled to the precorrection control input of a precorrection circuit upstream of the first precorrection circuit.