It is suggested that logarithm transform of oscillograph and large dynamic range of detector should be applied to adjust the optical cavity for improving metrical precision.
在光路调节中采用具有对数变换功能的示波器和动态范围较大的探测器，可以提高测量精度。
2
Results and Conclusion it indicates that in optical fiber gas concentration detecting system the virtual digital oscillograph has good detecting signal and a good human-machine interface and feature.