1.1.1 FPGA控制模块 该设计采用Alter公司的Cyclone系列现场可编程门阵列(Field Programmable Gate Array,FPGA),芯片EP1c3T144来实现高速数据控制及传输。 EP1C3T144采用TPFQ封装,拥有100个I/O口和2 910个逻辑单元,是一种高密度、高性能的FPGA。 FPGA的主要功能是高速数据采集、数据帧控制,以及与USB单片机进行通信。...
Windows 子选板包含以下新 VI: • Blackman-Nuttall Window VI • Chebyshev Window VI • Gaussian Window VI • Symmetric Window VI • Window Properties VI 编程选板 (Programming Palette) Comparison 子选板包括以下新函数: • Empty Array? 函数 52 ni.com/china • Polar to Re/Im 函数 ...
100.23046EmptyArrayErrEmpty array.23045nLTkErrn= n = 0 is violated or the matrix of derivativeshas the wrong dimen.Levenberg Marquard23029LevMarFailureErrs failed.23028MEquationErrWrong mequation.23027VariableErrNot exactly one variable.23026NoOptimumErrNo optimum found.23025validTripletErrvalid triplet (...
This test uses only one type of variable, an empty Boolean array. The memory usage increases linearly with the variable count. Figure 32. Memory Usage of Shared Variables of Different Sizes T5 Test Results Comparison between 8.2 Nework-published shared variables and 8.5 variables - streaming In ...
函数Array函数用来插入下个运行状态的字符串,状态变更通过修改该字符串即可。上面的所提到的问题现在就可以自行设计解决了。参见下图IIH0Initialize*. Default,statu5_2n statusj图541.2-3队列状态机基本结构如果想在Initialize后执行status_4状态,那就将上图中的字符串常量 (status_1 )修改为:status_4并且在status ...
但是如果使用的是 for 循环,LabVIEW 在循环运行之前,就已经知道数组的大小是100,因此 LabVIEW 可以一次为 Array1 分配一个大小为 100 的内存空间。但是对于 while 循环,由于循环次数不能在循环运行前确定,LabVIEW 无法一次就为 Array2 分配合适的内存空间。LabVIEW 会在 while 循环的过程中不断调整 Array2 内存...
You can clear a graph programmatically by writing an empty array to its Value property: Make sure the graph is clear by right-clicking the graph and choosing Data Operations >> Clear Graph. Right-click the graph and select Create >> Property Node >> Value. Right-click Value and select ...
:矩阵子模板,用于对创建矩阵和对矩阵进行操作,如Array Size(矩阵大小)、Insert Into Array(将元素插入矩阵)、Delete From Array(从矩阵中删除元素)、Initialize Array(初始化矩阵)等。 :“簇”子模板,用于创建“簇”和对“簇”进行操作,如Bundle(捆绑)、Build Cluster Array(创建簇矩阵)、Cluster To Array(簇转换...
(for inputs) • Default value (for inputs) unless you list the default value in parentheses as part of the control name • Behavior for special values (0, empty array, empty string, and so on) • Additional information, such as if the end user must set this value always, often,...
Consequently, if the sampling rate is not fast enough to create an array or waveform of this size in the time allotted by the timeout, the VI will throw a timeout error. To prevent this, increase the timeout parameter (the default value is 10 seconds), or reduce Number of Samples per...