labview

How to modify Ring's background color via property nodes?

由 狂风中的少年 提交于 2019-12-13 19:21:35
问题 Assigning background color at edit time works for all ring controls except "System ring": I am trying to modify the background color of a Ring control using the RingText.BGColor property node, but it doesn't work. It does work for a Numeric control though: What's wrong? 回答1: As explained by @shmicah, menu rings do not support dynamically setting of bgcolor. However, this can be "solved" by first creating a text ring and then replacing it (right click -> replace) with a menu ring.

LabVIEW2018工具包分享

由 ℡╲_俬逩灬. 提交于 2019-12-13 16:17:32
LabVIEW2018工具包分享地址 仅用于学习交流，不用于其它用途 labview2018软件 中文版LabVIEW (1.61 GB) http://ftp.ni.com/evaluation/labview/ekit/other/downloader/2018LV-WinChn.exe 英文版64位系统的LabVIEW http://ftp.ni.com/evaluation/labview/ekit/other/downloader/2018LV64-WinEng.exe NI的ftp空间 http://download.ni.com/evaluation/labview/ekit/other/downloader/ LabVIEW 2018模块和工具包 NI运动助手 (477 MB) http://ftp.ni.com/evaluation/labview/ekit/other/downloader/MotionAssistant1600.exe 高级信号处理工具包 (321 MB) http://ftp.ni.com/evaluation/labview/ekit/other/downloader/2018ASPT.exe 控制设计和仿真模块 (576 MB) http://ftp.ni.com/evaluation/labview/ekit/other

Anything wrong with this SQL query?

由 北城以北 提交于 2019-12-13 02:58:09
问题 I'm using LabVIEW and the Database Toolkit to execute an SQL query, and it keeps barfing on this for syntax reasons. I'm using MySQL through the ODBC connector. Each line should have a newline character at the end except for the last. The error LabVIEW is throwing is this: Possible reason(s): ADO Error: 0x80040E14 Exception occured in Microsoft OLE DB Provider for ODBC Drivers: [MySQL][ODBC 5.1 Driver][mysqld-5.1.42-community]You have an error in your SQL syntax; check the manual that

C- Peak detection via quadratic fit

由 末鹿安然 提交于 2019-12-12 20:51:06
问题 I have an application where I need to find the position of peaks in a given set of data. The resolution must be much higher than the spacing between the datapoints (i.e. it is not sufficient to find the highest datapoint, instead a "virtual" peak position has to be estimated given the shape of the peak). A peak is made of about 4 or 5 datapoints. A dataset is acquired every few ms and the peak detection has to be performed in real time. I compared several methods in LabVIEW and I found the

DLL Load Error in Labview 2011

由 早过忘川 提交于 2019-12-12 19:42:26
问题 I have encountered a problem with loading a DLL in LabVIEW. I am using LabVIEW to connect to a flow meter, and for this purpose the company that makes the flow meter was nice enough to give me a library of subVIs. Each of those subVIs calls a function from one of two DLL libraries also provided by the company. So half of these subVIs are dependent on one DLL, and the other half are dependent on the other DLL. Those that use the first DLL work prefectly well, and there is no issue with them.

Labview - Increasing Array Index with Array Size Limiting

由 孤街醉人 提交于 2019-12-12 18:33:41
问题 I'm working with a labview XY line plot that uses a random number generator for y values and the while loop count for x values. Upon reaching a threshold x value, say 1000, I'd like to be able to iterate across the past 1000 values and display only every 10th (This has the effect of de-cluttering the plot). Ideally the method for achieving this would be expandable for higher threshold values so that the plot has the following format: Every 1,000 values, step size is 10 Every 10,000 values,

Missing driver LabVIEW

由 旧时模样 提交于 2019-12-12 01:33:12
问题 I'm trying to run a program written by someone else in LabVIEW. The program records voltage. However it won't open because it is missing subVIs. Initially I thought that only one was missing and the rest weren't working becuase they were attached to it but after someone on this forum kindly found it for me the rest of the VIs still won't work so I think I need to download them again. However there are too many off them to get separately, also I tried googling them to no avail. The subVIs are

How do you programmatically configure the Serial FIFO Receive and Transmit Buffers in Windows?

由 自古美人都是妖i 提交于 2019-12-11 23:46:27
问题 From Device Manager in Windows it is possible to configure the Receive Buffer and Transmit FIFO Buffer sizes for a serial port from Advanced Settings for a COM port: I would like to configure the values for the TX and RX FIFO buffers for COM ports programmatically. Ideally a method to do it in LabVIEW or even via .NET / command line as both are easy to interface with from LabVIEW. Edit: Just to clarify this is in regards to the 16550 compatible UART FIFO buffers and not software buffers like

Why are the pulse width and frequency of pulse not correct in my labview waveform?

由 馋奶兔 提交于 2019-12-11 19:17:07
问题 In the following image you see I set the pulse frequency to 50 Hz and pulse width to 2ms. The duty cycle computes to 10%, which is fed into a signal simulator. When I execute the labview program the waveform I get is shown below: This waveform is clearly not correct because pulse width and pulse frequency both appear to be about 10ms. Following is the back panel wiring diagram. My sampling rate is set to 200000Hz. Why are my pulses not showing up correctly? 回答1: You have not added the duty

Why does my waveform not have the right frequency intervals in labview?

由 。_饼干妹妹 提交于 2019-12-11 17:57:14
问题 In the LabView GUI I set the frequency to 300Hz = 1/300 seconds = 3.333 milliseconds and the pulse width to 2 milliseconds. This computes to a duty cycle of 60%. Why are intervals between the pulses shown below not equal to 3.333 milliseconds? They look closer to 1 millisecond,which is way off. Following is a wiring diagram I am using: Is it possible the problem is my timed loop being set to loop every second? Should I loop faster? What kind of a loop should I be using? 回答1: You have a pulse
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