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  2. Signal generator - Wikipedia

    en.wikipedia.org/wiki/Signal_generator

    A signal generator is one of a class of electronic devices that generates electrical signals with set properties of amplitude, frequency, and wave shape. These generated signals are used as a stimulus for electronic measurements, typically used in designing, testing, troubleshooting, and repairing electronic or electroacoustic devices, though it often has artistic uses as well.

  3. AN/URM-25 signal generator - Wikipedia

    en.wikipedia.org/wiki/AN/URM-25_signal_generator

    The AN/URM-25 signal generator was an electronic vacuum-tube radio ... Frequency output ranges from 10 kHz to 50 MHz with amplitude modulation selectable at 400 and ...

  4. Function generator - Wikipedia

    en.wikipedia.org/wiki/Function_generator

    When those traits are required, other signal generators would be more appropriate. Some function generators can be phase-locked to an external signal source (which may be a frequency reference) or another function generator. [2] Function generators are used in the development, test and repair of electronic equipment.

  5. Frequency synthesizer - Wikipedia

    en.wikipedia.org/wiki/Frequency_synthesizer

    A frequency synthesizer is an electronic circuit that generates a range of frequencies from a single reference frequency. Frequency synthesizers are used in devices such as radio receivers, televisions, mobile telephones, radiotelephones, walkie-talkies, CB radios, cable television converter boxes, satellite receivers, and GPS systems.

  6. Direct digital synthesis - Wikipedia

    en.wikipedia.org/wiki/Direct_digital_synthesis

    Direct digital synthesis (DDS) is a method employed by frequency synthesizers used for creating arbitrary waveforms from a single, fixed-frequency reference clock. DDS is used in applications such as signal generation , local oscillators in communication systems, function generators , mixers, modulators , [ 1 ] sound synthesizers and as part of ...

  7. Comb generator - Wikipedia

    en.wikipedia.org/wiki/Comb_generator

    A comb generator is a signal generator that produces multiple harmonics of its input signal. The appearance of the output at the spectrum analyzer screen, resembling teeth of a comb, gave the device its name. Comb generators find wide range of uses in microwave technology. E.g., synchronous signals in wide frequency bandwidth can be produced by ...