Frequency modulation is by far the most important communication means. This finds an application in transmitting systems. This is preferred, because of its ability to eliminate associated noise, there by providing high fidelity in the audio at the receiving end.

This trainer is to understand the concept of

generating a FM signal for further analysis. This trainer requires a modulating signal, often called as message signal. This can be a SINE wave generated by an external audio generator as one input. The carrier wave is generated by the internal electronics in the trainer itself. By using an external Oscilloscope the FM wave can be observed at its output terminals. This has a built-in demodulation setup, which reconstructs the message signal and is available for observation. You can use this trainer to measure the modulation index.