测控系统以工控机作为硬件基础，分为模拟量输入通道和数字量输出通道两部分。
The hardware components of the measurement and control system based on industrial personal computer consist of the analog input channel and the digital output channel.
氧化锌避雷器放电次数及泄露电阻电流、电容电流可用RS485接口以数字量输出。
Zinc oxide lightning arrester discharge frequency, leakage resistance current, and capacitive current can be output digitally with interface RS485.
它广泛用于机械加工测量，闭环数控，数字显示，8、4、2、1码数字量输出和控制信号输出等系统中。
It can be widely used in machine fabricating measuring, close-loop digital control, digital display, 8-4-2-1 digital readout and control signal output system.
本文还对汇流条控制器的模拟量输入通道、数字量输入通道、数字量输出通道进行了自检测设计，包括硬件BIT设计和软件实现方法。
The built-in test (BIT) design of hardware and software is also introduced in this dissertation. The BIT design consists of analog inputs, digital inputs and digital outputs.
步进电机控制系统的研制，省去了原自研的步进电机控制板，改为通过数据采集卡上的16路数字量输出口，每四路控制一个步进电机的方案。
The order of develop of the controlled system of stepper motor is to substitute self-made control unit and use controlled stepper motor passed by 16 way of digital I/O .
与一般温度传感器输出的量是模拟量所不同的。它的输出是频率数字量，故具有很高的灵敏度、分辨率。
It is different from other temperature sensors in frequency output, high sensitivity, and can be connected directly with microcomputer.
本卡不但具有四路同步A/D转换功能，而且还具有两路D/A输出功能和八路数字量输入输出功能。
This card not only has the function of four-channel simultaneous sampling, but also has two channels for D/A, eight channels for digital I/O.
根据使用需要，仪器可以提供数字量或模拟量输出。
The instrument is capable of providing digital or analog output as required.
根据使用需要，仪器可以提供数字量或模拟量输出。
The instrument is capable of providing digital or analog output as required.
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