Video: Displaying sine waves and musical tones in a Keysight MSO-X 4054A Oscilloscope By Design World Staff | ❇️How to connect a Yamaha Keyboard to a Keysight MSO-X 4054A oscilloscope. The post Video: Displaying sine waves and musical tones in a Keysight MSO-X 4054A Oscilloscope appeared first on Test & Measurement Tips. Filed Under: Test & Measurement TipsTagged With: keysight