[问答]

怎么使用Python PyVISA来控制E4438C

问答对人有帮助，内容完整，我也想知道答案 0 总之，我可以成功地将命令写入仪器（带有ARB的Agilent E4438C信号发生器），但我无法读回它们。我正在使用PyVISA并安装了Agilent IO库。我附上了一个我创建的脚本，用于说明问题以及安捷伦IO监视器的屏幕截图，我将在以下段落中对其进行介绍。您可以在上面的第9-31行中看到Python正被用于访问仪器。您还应该能够在第9-19行看到命令“RAD：ARB：STAT ON。 n”（注意新行字符串之前的尾随句点），并返回成功。我还可以验证是否在仪器上执行了请求的操作。第20-31行显示了当我尝试回读状态时会发生什么。写入“RAD：ARB：STAT？。 n”命令，但读取超时，如第29行所示。第1-8行显示使用随Agilent Connection Manager提供的交互式命令实用程序的相同操作序列。请注意，这些命令在新行字符串之前没有尾随句点，并且写入和读取命令都成功执行，并且read命令返回正确的值“1 n”，表示状态为“on”。似乎就像PyVISA实现在新行字符串之前添加这个尾随句点一样，这似乎不会影响写入命令，但可能会影响读取命令。我很感激任何人都可以提供的任何帮助或见解。 IO Monitor.jpg193.0 KB 以上来自于谷歌翻译以下为原文 In summary, I can write commands successfully to an instrument (the Agilent E4438C signal generator with ARB), but I can’t read them back. I’m using PyVISA and have installed the Agilent IO libraries. I have attached a script I created that illustrates the issue and a screenshot from the Agilent IO Monitor, which I will reference in the following paragraphs. You can see in lines 9-31 above that Python is being used to access the instrument. You should also be able to see in lines 9-19 that the command “RAD:ARB:STAT ON.n” (note the trailing period before the new line string) is written and a success is returned. I can also verify that the requested action is performed on the instrument. Lines 20-31 show what happens when I try to read back the status. The command “RAD:ARB:STAT?.n” is written, but the read times out as indicated in line 29. Lines 1-8 show the same sequence of actions using the interactive command utility provided with the Agilent Connection Manager. Note that these commands do not have the trailing period before the new line string, and both the write and read commands are executed successfully, and the read command returns the proper value “1n” indicating the status as “on.” It seems like the PyVISA implementation adds this trailing period before the new line string, which does not seem to affect write commands but might be affecting read commands. I’d appreciate any help or insight anyone might be able to provide. 附件 E4438C_ARB_status.py396 字节 IO Monitor.jpg193.0 KB 0
2019-5-21 06:28:44　　评论淘帖0 邀请回答您可以邀请以下用户，快速回答问题 × kingnet_52040 该类别下有 195 个回答。邀请回答 60user7 该类别下有 81 个回答。邀请回答蓝色冰汐该类别下有 45 个回答。邀请回答醉狼工作室该类别下有 41 个回答。邀请回答 ianwhoani 该类别下有 30 个回答。邀请回答 dkhwakd 该类别下有 25 个回答。邀请回答 aaabbb567 该类别下有 23 个回答。邀请回答 e08506806 该类别下有 20 个回答。邀请回答 szzjfyp 该类别下有 18 个回答。邀请回答 sonia87 该类别下有 16 个回答。邀请回答 ningee 该类别下有 16 个回答。邀请回答 xj5548 该类别下有 15 个回答。邀请回答 zouqinxiang 该类别下有 15 个回答。邀请回答 daichuangs 该类别下有 14 个回答。邀请回答 derek88 该类别下有 14 个回答。邀请回答 JST2006 该类别下有 12 个回答。邀请回答 hzmbs2016 该类别下有 12 个回答。邀请回答 hu_wflllllllg21 该类别下有 11 个回答。邀请回答 fichesw 该类别下有 11 个回答。邀请回答 www037 该类别下有 11 个回答。邀请回答举报萧治维相关推荐 • 怎么将数据从ADS下载到E4438C ESG 1281 • 如何产生E4438C ESG和N5102A调制信号？ 2788 • 如何导入驱动程序和调用函数以便与E4438C进行通信 1721 • 怎么将数据流式传输到E4438C 3553 • 如何使用Agilent E4438C生成雷达信号 2337 • E4438C ARB波形重播怎么标记一些状态寄存器？ 1647 • E4438C和信号工作室的TCPIP连接错误该怎么办？ 1880 • 如何在E4438C上通过I-Q调制实现2-FSK？ 1939 • 怎么使用矢量信号发生器E4438C生成的信号的带宽 1787 • 如何使用E4438C-402 TDMA Personality测量GSM信号 1339 2个回答

答案对人有帮助，有参考价值 0 您好*ennett_apl，我看到您正在使用套接字会话。对于套接字会话，您需要为仪器手柄启用结束指示器。您还需要将结束指示符分配给十进制10，即“ n”。套接字会话是一个开放的管道，不提供类似于VXI-11协议的终端指示线。当它从仪器中看到终止字符“ n”时，您需要告诉VISA会话终止读取。连接以上来自于谷歌翻译以下为原文 Hi *ennett_apl, I see that you are using a socket session. For socket sessions, you will need to enable the end indicator for your instrument handle. You will also need to assign the end indicator to decimal 10 which is a "n". Socket sessions are an open pipe and do not provide an end indicator line like that of the VXI-11 protocol. You will need to tell the VISA session to terminate reads when it sees the termination character "n" from the instrument. Connectivity

2019-5-21 06:37:04 评论举报姜春阳

答案对人有帮助，有参考价值 0 schumi_LYQ 发表于 2019-5-21 06:37 您好**ennett_apl，我看到您正在使用套接字会话。对于套接字会话，您需要为仪器手柄启用结束指示器。您还需要将结束指示符分配给十进制10，即“ n”。试试这个 - 适用于MXG，所以应该适用于ESG-C - 简单的IDN IO通信....＃------------------------- -------------------------------------------------- --- #File：MXG.py＃作者：AMS＃Rev：1-00＃Date：13-05-06＃状态：Beta＃注：＃代码片段显示IO通信与N5182B信号发生器##历史：＃ 1-00 12-05-05首次发布＃--------------------------------------- ---------------------------------------＃---------- -------------------------------------------------- ------------------＃初始屏幕信息＃--------------------------- -------------------------------------------------- - 打印'----------------------------------------------- - '打印'SIMPLE IO，带N5182B信号发生器'打印'文件：MXG.py'打印'Vers：1-00'打印'日期：13-05-06'打印''打印'1。使用MXG'print'的简单IO通信------------------------------------------ ------'＃------------------------------------------ ------------------------------------＃静态参数＃---------- -------------------------------------------------- ------------------ #IO参数＃根据完整的VISA仪器地址＃例如设置VISA地址如果在GPIB上那么GPIB0 :: 19 :: inst0（或GPIB1 ......等）＃addrSRC ='TCPIP0 :: 134.27.147.22 :: inst0'＃MXG VISA地址addrSRC ='TCPIP0 :: 134.27.147.22 :: 5025：：SOCKET'TIMO = 5＃IO超时5秒termChar =' n'#Terminionion字符＃----------------------------- -------------------------------------------------＃加载库＃----------------------------------------------- -------------------------------打印''打印'从签证导入中加载库......'从导入时间开始，睡觉，时钟打印'加载库....完成 n'＃--------------------------------- ---------------------------------------------＃Initialize MXG＃ - -------------------------------------------------- --------------------------- src = instrument（addrSRC）src.timeout = TIMO #set IO timeout src.term_chars = termChar #set termintaion character src.write（' cls'）print'MXG IDN return： t t t％s'％（src.ask（'* idn？'））以上来自于谷歌翻译以下为原文 Try this - works for an MXG, so should work for ESG-C - simple IDN IO comms.... # ------------------------------------------------------------------------------ # File: MXG.py # Author: AMS # Rev: 1-00 # Date: 13-05-06 # Status: Beta # Notes: # Code snippet to show IO commns with N5182B signal generator # # History: # 1-00 12-05-05 Initial release # ------------------------------------------------------------------------------ # ------------------------------------------------------------------------------ # Initial screen info # ------------------------------------------------------------------------------ print '------------------------------------------------' print 'SIMPLE IO WITH N5182B SIGNAL GENERATOR ' print 'File: MXG.py' print 'Vers: 1-00' print 'Date: 13-05-06' print '' print '1. Simple IO comms with MXG' print '------------------------------------------------' # ------------------------------------------------------------------------------ # Static Parameters # ------------------------------------------------------------------------------ # IO Parameters # Set VISA address according to the full VISA instrument address # e.g. if on GPIB then GPIB0::19::inst0 (or GPIB1... etc) #addrSRC='TCPIP0::134.27.147.22::inst0' # MXG VISA address addrSRC='TCPIP0::134.27.147.22::5025::SOCKET' TIMO=5 # IO timeout 5 secs termChar='n' # Termintaion character # ------------------------------------------------------------------------------ # Load libraries # ------------------------------------------------------------------------------ print '' print 'Loading libraries...' from visa import * from time import time, sleep, clock print 'Loading libraries....donen' # ------------------------------------------------------------------------------ # Initialize MXG # ------------------------------------------------------------------------------ src=instrument(addrSRC) src.timeout=TIMO # set IO timeout src.term_chars=termChar # set termintaion character src.write('cls') print 'MXG IDN return:tt%s' %(src.ask('idn?'))

2019-5-21 06:42:32 评论举报许超丽