What is attenuation accuracy?
Attenuator accuracy is the difference between the measured attenuation and the ideal attenuation for each attenuator step. The signal source is provided by a signal generator tuned to 50 MHz.
What is a reflection attenuator?
A reflection attenuator uses a four-port quadrature coupler, with two matched terminations on the coupled and through ports. The terminations have to present at least a partially real impedance for the device to work. Reflection attenuators can be continuously variable, or “digital”, with two or more discrete states.
What is input attenuation?
Input Attenuation. Input Attenuation. Sometimes a sensitive microphone operating in close proximity to the sound source can generate a signal with enough level to overload the mixer inputs.
What do you mean by attenuation?
Attenuation is a general term that refers to any reduction in the strength of a signal. Attenuation occurs with any type of signal, whether digital or analog. Sometimes called loss, attenuation is a natural consequence of signal transmission over long distances.
Why is attenuation needed?
Attenuation is an important factor limiting the transmission of a digital signal across large distances. Thus, much research has gone into both limiting the attenuation and maximizing the amplification of the optical signal.
What causes attenuation?
Attenuation is the reduction in power of the light signal as it is transmitted. Attenuation is caused by passive media components such as cables, cable splices, and connectors.
Why attenuation is required?
Fixed attenuators in circuits are used to lower voltage, dissipate power, and to improve impedance matching. In measuring signals, attenuator pads or adapters are used to lower the amplitude of the signal a known amount to enable measurements, or to protect the measuring device from signal levels that might damage it.
What are the types of attenuation?
The different types of attenuation are deliberate, automatic, and environmental. Deliberate type mainly occurs where the volume control is required to reduce the level of sound on electronic devices.
What is attenuation coefficient?
Attenuation coefficient describes the extent to which the radiant flux of a beam is reduced as it passes through a specific material. It is used in the context of:
What is the flatness tolerance of a surface?
The flatness tolerance references two parallel planes (parallel to the surface that it is called out on) that define a zone where the entire reference surface must lie. Flatness tolerance is always less than the dimensional tolerance associated with it.
What is gain flatness?
Gain flatness is the measure of the variation of gain over a specified frequency range. What Is Gain? What Is Flatness? Why Measure Gain and Flatness?
What is the purpose of flatness?
When you want to constrain the amount of waviness or variation in a surface without tightening the dimensional tolerance of said surface. Usually, flatness is used to give a surface an even amount of wear or for sealing properly with a mating part.