| 摘要 |
PURPOSE: To accurately measure noise mixed into a signal conversion part by taking out an electrical signal from the pre-stage of the signal conversion part and measuring the electrical signal by a waveform measuring instrument. CONSTITUTION: A signal conversion part 1 of an inverter lighting apparatus which can be remotely controlled by light signals is provided with a light- electricity converter 2, a capacitor for integration, and a digital signal converter 5 with a detection circuit 3 and a waveform shaping circuit 4. After replacing the capacitor for integration of the signal conversion part 1 by a resistor 6 (for taking out signal) for measurement, the inverter lighting apparatus is stored in a constant temperature bath at a specific temperature. Then, an electric wire 16 for measurement is taken out from both edges of the resistor 6 for measurement and is connected to the resistor 6 for measurement. Further, a waveform measuring instrument and a controller are connected to FOL, thus accurately measuring light noise and electromagnetic noise mixed into the signal conversion part 1 and measuring time-dependent noise with an inverter lighting apparatus kept at a preset temperature. |
