SERVO SYSTEM TESTING INSTRUMENT AND SERVO SYSTEM TESTING SYSTEM

A servo system testing instrument and a servo system testing system. The servo system testing instrument comprises: a first interface (102), a first conditioning circuit (104), a rotary transformer decoding chip (106), a second interface (108), a second conditioning circuit (110), a digital signal processor (112), a communication interface module (114), and a communication mode conditioning module (116). The first interface (102) collects a rotary transformer signal, and the first conditioning circuit (104) modulates the rotary transformer signal collected by the first interface (102), so that the modulated rotary transformer signal is decoded by means of the rotary transformer decoding chip (106) to be output to the digital signal processor (112); the second interface (108) collects a current, a voltage and a temperature of the servo system; the second conditioning circuit (110) modulates the current, the voltage and the temperature, and inputs modulated current, voltage and temperature to the digital signal