Signal tracer Signal tracer A signal tracer is a piece of electronic test equipment used to troubleshoot radio and other electronic circuitry. Usually a very simple device, it normally provides an amplifier, and a loudspeaker, often battery-powered and packaged into a small, hand-held test probe. An optional diode detector is usually also provided, allowing the detection of amplitude-modulated signals. The technician injects a test signal into the device under test. Then, by using the signal tracer, the tech can follow the signal through the various circuits of the radio receiver. So long as the signal can be heard, the circuitry up to
Signal generator been embedded hardware units, but since the age of multimedia PCs, flexible, programmable software tone generators have also been available. In June 1928, the General Radio 403, was the first commercial signal generator ever marketed. It supported a frequency range of 500Hz to 1.5MHz. Also, in April 1929, the first commercial frequency standard was marketed by General Radio with a frequency of 50KHz. A function generator is a device which produces simple repetitive waveforms. Such devices contain an electronic oscillator, a circuit that is capable of creating a repetitive waveform. (Modern devices may use digital signal processing to synthesize waveforms,