Introduction - If you have any usage issues, please Google them yourself
Requirements of measuring range 1Hz-10MHz (input signal range of 0.5V-5V). F the basic performance requirements for the 10MHz, the frequency of absolute error not more than 1000Hz (high-frequency accuracy) f less than 1000Hz, the frequency of absolute error no greater than 1Hz. (Low-frequency accuracy) to improve the accuracy of performance requirements to improve high-frequency: f to 10MHz, the frequency of absolute error not more than 100Hz. Low-frequency accuracy: f is less than 1000Hz, the frequency of absolute error no greater than 0.5Hz.