(The signal converter is an accessory product of the JN338 series torque and speed sensor, which can be purchased and used by users. When it is inconvenient for the user to directly measure the frequency signal output by the sensor, this product can be used to convert the output signal, during which the F/V signal converter can convert the frequency signal output by the sensor into a standard voltage signal, and the F/I signal converter. The frequency signal output by the sensor can be converted into a standard current signal.)