The module design contains transmission line, bias and APC circuit of LD, low noise and high linearity RF circuit, FSK modern, monitor and control circuit design and PCB layout.

本文重点进行了光模块主要的电路包括传输线、LD偏置电路与APC电路、低噪声高线性射频电路、FSK调制与解调功能电路与监视控制功能电路的设计。

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Computer control, automatic conversion linearity correct and pressure automatic calibration were used in the control circuit.

测量电路采用计算机控制，实施量程自动转换、线性修正和压力自动校准。

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For every circuit unit, mainly analyzing and designing the low-noise preamplifier, rule control amplifier and linearity precision detector unit circuit and so on.

各单元电路设计时，从整个测量系统误差的角度分析设计低噪音前置放大器、程控放大器、线性精密检波器等单元电路。

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