Abstract
<p class="p0">In order to realize the measurement of dynamic light, a new measurement method of dynamic gain adjustment was proposed in this paper. And the method is combined hardware with software by the programmable amplifier with microprocessor. The value of signal peak is stayed by the peak hold circuit to be reference for gain amplifier. The test speed of dynamic light source is increased greatly through using this method. The dynamic source light can be measured in real-time by programmable gain instrument amplifier which is controlled by microprocessor. The result shows that the measurement error can be reduced to 0.1% in range of the light intensity at 1cd- 2400cd by this method.</p>
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