The invention discloses a special
signal generator for medical
treadmill exercise calibration. The
signal generator comprises a
power module, a DA wave generating module, a
chip wave generating module and a waveform output interface module. The
power module is used for supplying power to the DA wave generating module and the
chip wave generating module; and a standard
heart rate signal, which is transmitted by the DA wave generating module, and sine
waves and square
waves, which are transmitted by the
chip wave generating module, are outputted by virtue of the waveform output interface module. Meanwhile, the
signal generator disclosed by the invention, in accordance with waveforms and indicators required by the medical
treadmill exercise calibration, can achieve the reversal design of the input digital quantity and attenuation multiple of a digital-to-analogue conversion chip in an amplitude regulating module and the
capacitance values of 11 capacitors in a frequency regulating module. The
signal generator disclosed by the invention is specially applicable to the calibration of medical
treadmill exercise electrocardiograph parameters, and the
signal generator has the advantages of stable output waveform, convenient calibration and the like.