What instruments are used to measure the transient analysis results at all levels of the amplification circuit?
Manual measurement. If you do not have a dedicated instrument, you will need to manually input signals to compare measurements. Signal generator and oscillograph need to be measured at this time. Use a signal generator to provide the corresponding sine signal circuit, output of the oscilloscope; the output frequency until the adjustment signal generator oscilloscope waveform found decreased to a maximum value of 0.707 when the frequency is the cut-off frequency.
Automatic measurement. A special signal tester is used to automatically input the sweep frequency signal, and the upper and lower limit of the cut-off frequency of the circuit is directly displayed according to the output.
Cut-off frequency point, that is, at this frequency point, the signal amplitude is equal to 0.707 times the maximum output, including the minimum cut-off frequency and the highest cut-off frequency of two kinds.
