主要内容
开始使用数字模拟发现获取数据
此示例演示如何以300 kHz的速率获取电压数据。输入波形是由外部函数生成器提供的正弦波（10 Hz，2 Vpp）。
为数字化设备创建数据采集
使用查找连接到系统的数字设备数据库列表.
数据库列表(“数字化”)dq=daq(“数字化”)
“1×4”表设备=1×4 4表设备描述模型描述模型设备描述模型描述模型设备描述描述模型设备描述1×4 4 4 4表设备描述1×4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4表设备描述描述描述模型描述描述描述描述模型描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述描述Uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuudq=使用Digilent Inc.进行数据采集。硬件：运行：0速率：10000 Numscansavable:0 NumScansAcquired:0 NumScansQueued:0 NumScansOutputByHardware:0速率限制：[]显示通道显示属性和方法
添加一个模拟输入通道
添加具有设备ID的模拟输入通道AD1和通道ID1.。将测量类型设置为电压.
Chu_in=附加输入（dq，“AD1”,"1",“电压”);
设置数据采集和通道属性
将采集速率设置为300 kHz，将输入信号的动态范围设置为-2.5至2.5伏。
丘英名=“AD1_1_in”比率=300e3；dq.比率=比率；Chu in.范围=[-2.5 2.5]；
Chu in=索引类型设备通道测量类型范围名称uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu
获取单个样本
按需获取一次扫描，显示数据和触发时间。
[singleReading，startTime]=读取（dq）
singleReading=时刻表时间AD1_1_in________________0秒-0.37211开始时间=日期时间2019年11月21日16:56:50.631
获取时间戳数据
获取一组时钟数据一秒钟。
[数据，开始时间]=读取（dq，秒（1））；
绘制采集的数据
绘图（data.Time，data.AD1_1_in）；xlabel(‘时间’); 伊拉贝尔(‘电压（V）’); 头衔(['时钟数据触发时间：'datestr（startTime）]；
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