Patent ID: 8436604

Claim:
A measurement apparatus that measures a signal under measurement, comprising: a first oscillation circuit that receives one pulse of the signal under measurement and begins oscillating according to the pulse of the signal under measurement to output a first oscillated signal: a second oscillation circuit that receives one pulse of a reference signal and begins oscillating according to the pulse of the reference signal to output a second oscillated signal having a period that is different from a period of the first oscillated signal; and a first sampling section that samples the first oscillated signal according to a pulse of the second oscillated signal, wherein the first oscillation circuit includes: a first control section that selects one pulse of the signal under measurement; a first delay section that delays, by a first delay amount, the pulse selected by the first control section; and a first loop line that feeds the pulse output by the first delay section back to an input terminal of the first delay section, the second oscillation circuit includes: a second control section that selects one pulse of the reference signal; a second delay section that delay's, by a second delay amount different from the first delay amount, the pulse selected by the second control section; and a second loop line that feeds the pulse output by the second delay section back to an input terminal of the second delay section, and the first control section or the second control section counts a number of pulses that pass through the first loop line or the second loop line, respectively, and, when the resulting count value reaches a predetermined value, stops the output of the first oscillated signal or the second oscillated signal, respectively.