Final answer:
To tune SRA-56/57/58, a signal generator and an oscilloscope are used to generate sounds of various frequencies and amplitudes and visually display their characteristics, respectively.
Step-by-step explanation:
When tuning SRA-56/57/58, which is likely an electronic or communication device, the resources typically used are a signal generator and an oscilloscope. A function generator, which is a type of signal generator, is connected to a speaker to produce sounds with varying frequencies and amplitudes. Then, to analyze and display the characteristics of these sounds, a microphone connected to an oscilloscope is used. The most common oscilloscope controls that will be utilized for this purpose include amplitude and frequency. Adjusting these controls helps in accurately displaying the characteristics of the sound being produced. During this process, it is crucial to acquire a signal using the correct channel and utilize effective triggering. Once the signal is displayed on the oscilloscope, the user can make further adjustments to the amplitude and frequency controls to ensure proper tuning of the SRA-56/57/58.