26 Apr Things To Keep In Mind While Selecting A Signal Generator
A signal generator is an electronic measuring instrument that helps in detecting an accurately calibrated signal at frequencies from the audio to the microwave ranges. It provides a signal that can be adjusted according to modulation, frequency, impedance, waveform, and output voltage.
Possessing a robust and reliable high-speed wireless connection helps in winning the confidence of the customers. Therefore, the right signal generator is very much required. Since frequency spectrum is a finite resource, complex modulation schemes are needed to increase spectral efficiency. However, it is unfortunate that complex modulation instruments depend on accurate and stable signal generators. Therefore, after keeping in mind the specifications, getting the right signal generator for this purpose can be a quite difficult task.
1) Understand the key attributes:
It is very much important to understand the components of a signal generator and what makes a particular instrument different from the other. Also, there are different types of signal generators available. So it is essential to understand which one matches the requirements of the user. A signal generator comes in a variety of forms and capabilities. To consider the form factor, it is important to see if a benchtop instrument is required or a modular instrument. Signal generators are also classified on the basis of their capabilities: Analog, Vector, and Agile signal generators. Analog signal generators are capable of amplitude, frequency, phase, and pulse modulation. The vector signal generators have a built-in quadrature modulator to generate complex modulation formats. The ability to measure frequencies and amplitudes is an important attribute. Agile signal perpetrators provide speed and are ideal for high-volume wireless devices.
2) Power:
An important feature of any signal generator is the output power range. At times, signal generators need output signals as low as -120 dBm and as high as +20 dBm. Therefore before selecting a particular signal generator, it is essential to keep in mind that the measuring instrument should meet key specifications such as accuracy, spectral purity, and noise.
3) Accuracy:
It is very much essential to choose a signal generator that would yield accurate measurements. The key accuracy specifications that should be looked after are amplitude accuracy and frequency accuracy. Amplitude accuracy is how close the signal generator’s output amplitude is to the set amplitude. It is often specified within a frequency and temperature range. Frequency accuracy is affected by the stability of the reference oscillator and the amount of time that has passed away since the source was calibrated. Henceforth, the key specification to look out for is the reference oscillator aging rate.
Vishal Vyapar Vikash in Kolkata is one of the suppliers that provide the most accurate signal generator.
Therefore it is very much essential to understand the key attributes, know the power capacity of the measuring instrument and understand the capacity. Apart from that, considering the speed of the measuring instrument is also important.
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