To provide a frequency test circuit.
A frequency test circuit is used for testing a first clock signal having the first clock frequency of a server, and the frequency test circuit includes a first counting unit and a first control unit which operates under a second clock signal having a second clock frequency. The first control unit outputs a first control signal and a second control signal corresponding to the first counting unit on the basis of the second clock signal, and the first counting unit receives a first clock signal, and counts the number of pulses of the first clock signal under the control of the first control signal, and stops counting under the control of the second control signal to obtain a counting result, therein the counting result is the first clock frequency.
HON HAI PREC IND CO LTD
Masatake Shiga
Takashi Watanabe
Shinya Mitsuhiro