实例介绍
【实例简介】
【实例截图】
【实例截图】
【核心代码】
/* * Keysight VISA COM Example in C# * ------------------------------------------------------------------- * This program illustrates a few commonly used programming * features of your Keysight oscilloscope. * ------------------------------------------------------------------- */ using System; using System.IO; using System.Text; using Ivi.Visa.Interop; using System.Runtime.InteropServices; namespace InfiniiVision { class VisaComInstrumentApp { private static VisaComInstrument myScope; public static void Main(string[] args) { try { myScope = new VisaComInstrument("USB0::0x0957::0x17A6::MY54450160::0::INSTR"); myScope.SetTimeoutSeconds(10); // Initialize - start from a known state. Initialize(); // Capture data. Capture(); // Analyze the captured waveform. Analyze(); } catch (System.ApplicationException err) { Console.WriteLine("*** VISA COM Error : " err.Message); } catch (System.SystemException err) { Console.WriteLine("*** System Error Message : " err.Message); } catch (System.Exception err) { System.Diagnostics.Debug.Fail("Unexpected Error"); Console.WriteLine("*** Unexpected Error : " err.Message); } finally { myScope.Close(); } Console.Write("按任意键退出..."); Console.ReadKey(true); } /* * Initialize the oscilloscope to a known state. * -------------------------------------------------------------- */ private static void Initialize() { string strResults; // Get and display the device's *IDN? string. strResults = myScope.DoQueryString("*IDN?"); Console.WriteLine("*IDN? result is: {0}", strResults); // Clear status and load the default setup. myScope.DoCommand("*CLS"); myScope.DoCommand("*RST"); } /* * Capture the waveform. * -------------------------------------------------------------- */ private static void Capture() { // Use auto-scale to automatically configure oscilloscope. myScope.DoCommand(":AUToscale"); // Set trigger mode (EDGE, PULSe, PATTern, etc., and input source. myScope.DoCommand(":TRIGger:MODE EDGE"); Console.WriteLine("Trigger mode: {0}",myScope.DoQueryString(":TRIGger:MODE?")); // Set EDGE trigger parameters. myScope.DoCommand(":TRIGger:EDGE:SOURce CHANnel1"); Console.WriteLine("Trigger edge source: {0}",myScope.DoQueryString(":TRIGger:EDGE:SOURce?")); myScope.DoCommand(":TRIGger:EDGE:LEVel 1.5"); Console.WriteLine("Trigger edge level: {0}",myScope.DoQueryString(":TRIGger:EDGE:LEVel?")); myScope.DoCommand(":TRIGger:EDGE:SLOPe POSitive"); Console.WriteLine("Trigger edge slope: {0}",myScope.DoQueryString(":TRIGger:EDGE:SLOPe?")); // Save oscilloscope configuration. byte[] ResultsArray; // Results array. int nLength; // Number of bytes returned from instrument. string strPath; // Query and read setup string. ResultsArray = myScope.DoQueryIEEEBlock(":SYSTem:SETup?"); nLength = ResultsArray.Length; // Write setup string to file. strPath = "C:\\Users\\Will\\Desktop\\ConsoleApplication1\\setup.stp"; FileStream fStream = File.Open(strPath, FileMode.Create); fStream.Write(ResultsArray, 0, nLength); fStream.Close(); Console.WriteLine("Setup bytes saved: {0}", nLength); // Change settings with individual commands: // Set vertical scale and offset. myScope.DoCommand(":CHANnel1:SCALe 0.05"); Console.WriteLine("Channel 1 vertical scale: {0}",myScope.DoQueryString(":CHANnel1:SCALe?")); myScope.DoCommand(":CHANnel1:OFFSet -1.25"); Console.WriteLine("Channel 1 vertical offset: {0}",myScope.DoQueryString(":CHANnel1:OFFSet?")); // Set horizontal scale and offset. myScope.DoCommand(":TIMebase:SCALe 0.0002"); Console.WriteLine("Timebase scale: {0}",myScope.DoQueryString(":TIMebase:SCALe?")); myScope.DoCommand(":TIMebase:POSition 0.0"); Console.WriteLine("Timebase position: {0}",myScope.DoQueryString(":TIMebase:POSition?")); // Set the acquisition type (NORMal, PEAK, AVERage, or HRESolution). myScope.DoCommand(":ACQuire:TYPE NORMal"); Console.WriteLine("Acquire type: {0}",myScope.DoQueryString(":ACQuire:TYPE?")); // Or, configure by loading a previously saved setup. byte[] DataArray; int nBytesWritten; // Read setup string from file. strPath = "C:\\Users\\Will\\Desktop\\ConsoleApplication1\\setup.stp"; DataArray = File.ReadAllBytes(strPath); nBytesWritten = DataArray.Length; // Restore setup string. myScope.DoCommandIEEEBlock(":SYSTem:SETup", DataArray); Console.WriteLine("Setup bytes restored: {0}", nBytesWritten); // Capture an acquisition using :DIGitize. myScope.DoCommand(":DIGitize CHANnel1"); } /* * Analyze the captured waveform. * -------------------------------------------------------------- */ private static void Analyze() { byte[] ResultsArray; // Results array. int nLength; // Number of bytes returned from instrument. string strPath; // Make a couple of measurements. // ----------------------------------------------------------- myScope.DoCommand(":MEASure:SOURce CHANnel1"); Console.WriteLine("Measure source: {0}",myScope.DoQueryString(":MEASure:SOURce?")); double fResult; myScope.DoCommand(":MEASure:FREQuency"); fResult = myScope.DoQueryNumber(":MEASure:FREQuency?");Console.WriteLine("Frequency: {0:F4} kHz", fResult / 1000); myScope.DoCommand(":MEASure:VAMPlitude"); fResult = myScope.DoQueryNumber(":MEASure:VAMPlitude?"); Console.WriteLine("Vertical amplitude: {0:F2} V", fResult); // Download the screen image. // ----------------------------------------------------------- myScope.DoCommand(":HARDcopy:INKSaver OFF"); // Get the screen data. ResultsArray = myScope.DoQueryIEEEBlock(":DISPlay:DATA? PNG, COLor"); nLength = ResultsArray.Length; // Store the screen data to a file. strPath = "C:\\Users\\Will\\Desktop\\ConsoleApplication1\\screen.png"; FileStream fStream = File.Open(strPath, FileMode.Create); fStream.Write(ResultsArray, 0, nLength); fStream.Close(); Console.WriteLine("Screen image ({0} bytes) written to {1}", nLength, strPath); // Download waveform data. // ----------------------------------------------------------- // Set the waveform points mode. myScope.DoCommand(":WAVeform:POINts:MODE RAW"); Console.WriteLine("Waveform points mode: {0}",myScope.DoQueryString(":WAVeform:POINts:MODE?")); // Get the number of waveform points available. Console.WriteLine("Waveform points available: {0}",myScope.DoQueryString(":WAVeform:POINts?")); // Set the waveform source. myScope.DoCommand(":WAVeform:SOURce CHANnel1"); Console.WriteLine("Waveform source: {0}",myScope.DoQueryString(":WAVeform:SOURce?")); // Choose the format of the data returned (WORD, BYTE, ASCII): myScope.DoCommand(":WAVeform:FORMat BYTE"); Console.WriteLine("Waveform format: {0}",myScope.DoQueryString(":WAVeform:FORMat?")); // Display the waveform settings: double[] fResultsArray; fResultsArray = myScope.DoQueryNumbers(":WAVeform:PREamble?"); double fFormat = fResultsArray[0]; if (fFormat == 0.0) { Console.WriteLine("Waveform format: BYTE"); } else if (fFormat == 1.0) { Console.WriteLine("Waveform format: WORD"); } else if (fFormat == 2.0) { Console.WriteLine("Waveform format: ASCii"); } double fType = fResultsArray[1]; if (fType == 0.0) { Console.WriteLine("Acquire type: NORMal"); } else if (fType == 1.0) { Console.WriteLine("Acquire type: PEAK"); } else if (fType == 2.0) { Console.WriteLine("Acquire type: AVERage"); } else if (fType == 3.0) { Console.WriteLine("Acquire type: HRESolution"); } double fPoints = fResultsArray[2]; Console.WriteLine("Waveform points: {0:e}", fPoints); double fCount = fResultsArray[3]; Console.WriteLine("Waveform average count: {0:e}", fCount); double fXincrement = fResultsArray[4]; Console.WriteLine("Waveform X increment: {0:e}", fXincrement); double fXorigin = fResultsArray[5]; Console.WriteLine("Waveform X origin: {0:e}", fXorigin); double fXreference = fResultsArray[6]; Console.WriteLine("Waveform X reference: {0:e}", fXreference); double fYincrement = fResultsArray[7]; Console.WriteLine("Waveform Y increment: {0:e}", fYincrement); double fYorigin = fResultsArray[8]; Console.WriteLine("Waveform Y origin: {0:e}", fYorigin); double fYreference = fResultsArray[9]; Console.WriteLine("Waveform Y reference: {0:e}", fYreference); // Read waveform data. ResultsArray = myScope.DoQueryIEEEBlock(":WAVeform:DATA?"); nLength = ResultsArray.Length; Console.WriteLine("Number of data values: {0}", nLength); // Set up output file: strPath = "C:\\Users\\Will\\Desktop\\ConsoleApplication1\\waveform_data.csv"; if (File.Exists(strPath)) File.Delete(strPath); // Open file for output. StreamWriter writer = File.CreateText(strPath); // Output waveform data in CSV format. for (int i = 0; i < nLength - 1; i ) writer.WriteLine("{0:f9}, {1:f6}", fXorigin ((float)i * fXincrement), (((float)ResultsArray[i] - fYreference) * fYincrement) fYorigin); // Close output file. writer.Close(); Console.WriteLine("Waveform format BYTE data written to {0}", strPath); } } class VisaComInstrument { private ResourceManagerClass m_ResourceManager; private FormattedIO488Class m_IoObject; private string m_strVisaAddress; // Constructor. public VisaComInstrument(string strVisaAddress) { // Save VISA address in member variable. m_strVisaAddress = strVisaAddress; // Open the default VISA COM IO object. OpenIo(); // Clear the interface. m_IoObject.IO.Clear(); } public void DoCommand(string strCommand) { // Send the command. m_IoObject.WriteString(strCommand, true); // Check for inst errors. CheckInstrumentErrors(strCommand); } public void DoCommandIEEEBlock(string strCommand, byte[] DataArray) { // Send the command to the device. m_IoObject.WriteIEEEBlock(strCommand, DataArray, true); // Check for inst errors. CheckInstrumentErrors(strCommand); } public string DoQueryString(string strQuery) { // Send the query. m_IoObject.WriteString(strQuery, true); // Get the result string. string strResults; strResults = m_IoObject.ReadString(); // Check for inst errors. CheckInstrumentErrors(strQuery); // Return results string. return strResults; } public double DoQueryNumber(string strQuery) { // Send the query. m_IoObject.WriteString(strQuery, true); // Get the result number. double fResult; fResult = (double)m_IoObject.ReadNumber( IEEEASCIIType.ASCIIType_R8, true); // Check for inst errors. CheckInstrumentErrors(strQuery); // Return result number. return fResult; } public double[] DoQueryNumbers(string strQuery) { // Send the query. m_IoObject.WriteString(strQuery, true); // Get the result numbers. double[] fResultsArray; fResultsArray = (double[])m_IoObject.ReadList( IEEEASCIIType.ASCIIType_R8, ",;"); // Check for inst errors. CheckInstrumentErrors(strQuery); // Return result numbers. return fResultsArray; } public byte[] DoQueryIEEEBlock(string strQuery) { // Send the query. m_IoObject.WriteString(strQuery, true); // Get the results array. System.Threading.Thread.Sleep(2000); // Delay before reading. byte[] ResultsArray; ResultsArray = (byte[])m_IoObject.ReadIEEEBlock( IEEEBinaryType.BinaryType_UI1, false, true); // Check for inst errors. CheckInstrumentErrors(strQuery); // Return results array. return ResultsArray; } private void CheckInstrumentErrors(string strCommand) { // Check for instrument errors. string strInstrumentError; bool bFirstError = true; do // While not "0,No error". { m_IoObject.WriteString(":SYSTem:ERRor?", true); strInstrumentError = m_IoObject.ReadString(); if (!strInstrumentError.ToString().StartsWith(" 0,")) { if (bFirstError) { Console.WriteLine("ERROR(s) for command '{0}': ", strCommand); bFirstError = false; } Console.Write(strInstrumentError); } } while (!strInstrumentError.ToString().StartsWith(" 0,")); } private void OpenIo() { m_ResourceManager = new ResourceManagerClass(); m_IoObject = new FormattedIO488Class(); // Open the default VISA COM IO object. try { m_IoObject.IO = (IMessage)m_ResourceManager.Open(m_strVisaAddress, AccessMode.NO_LOCK, 0, ""); } catch (Exception e) { Console.WriteLine("An error occurred: {0}", e.Message); } } public void SetTimeoutSeconds(int nSeconds) { m_IoObject.IO.Timeout = nSeconds * 1000; } public void Close() { try { m_IoObject.IO.Close(); } catch { } try { Marshal.ReleaseComObject(m_IoObject); } catch { } try { Marshal.ReleaseComObject(m_ResourceManager); } catch { } } } }
好例子网口号:伸出你的我的手 — 分享!
小贴士
感谢您为本站写下的评论,您的评论对其它用户来说具有重要的参考价值,所以请认真填写。
- 类似“顶”、“沙发”之类没有营养的文字,对勤劳贡献的楼主来说是令人沮丧的反馈信息。
- 相信您也不想看到一排文字/表情墙,所以请不要反馈意义不大的重复字符,也请尽量不要纯表情的回复。
- 提问之前请再仔细看一遍楼主的说明,或许是您遗漏了。
- 请勿到处挖坑绊人、招贴广告。既占空间让人厌烦,又没人会搭理,于人于己都无利。
关于好例子网
本站旨在为广大IT学习爱好者提供一个非营利性互相学习交流分享平台。本站所有资源都可以被免费获取学习研究。本站资源来自网友分享,对搜索内容的合法性不具有预见性、识别性、控制性,仅供学习研究,请务必在下载后24小时内给予删除,不得用于其他任何用途,否则后果自负。基于互联网的特殊性,平台无法对用户传输的作品、信息、内容的权属或合法性、安全性、合规性、真实性、科学性、完整权、有效性等进行实质审查;无论平台是否已进行审查,用户均应自行承担因其传输的作品、信息、内容而可能或已经产生的侵权或权属纠纷等法律责任。本站所有资源不代表本站的观点或立场,基于网友分享,根据中国法律《信息网络传播权保护条例》第二十二与二十三条之规定,若资源存在侵权或相关问题请联系本站客服人员,点此联系我们。关于更多版权及免责申明参见 版权及免责申明
网友评论
我要评论