使用VBA和GPIB命令遇到了计时问题

我不能直接谈论我从未使用过的Rhode和Schwartz单元。最好的设备可以在数据准备就绪时设置SRQ标志。
您所要做的就是让您的VEE程序查找要在界面上设置的SRQ，然后您可以预先形成读取数据以获取读数。
您将不得不浏览Rhode＆amp; Schwartz手册以了解如何设置它，因为大多数设备都不会设置SRQ，除非它被配置为这样做。
还有其他方法设备可以让programknowdata准备就绪，再次通过手册查看我可以建议的全部内容.GregBigman8424写道：我正在尝试使用VBA和GPIB命令，但是我遇到了计时问题。
我首先点击运行SGL（单个）然后“init：imm”并请求获取EVM并读取它，但是init：imm的时间需要3秒才能加载并且程序调试。
我放置了Init：Imm之后尝试了* WAI功能，但它没有用。
我也试过* OPC？
命令，但是当我在OpcOk $中读取时，它也显示为“1”，我的evm值读作“”。
（报价中间没有任何东西）。
除了手动延迟之外的任何建议和评论。
我希望Rhode和Schwarz告诉我EVM值何时准备好读取，除了读取“”（空白），如果还没有准备等待它准备就绪，然后读入值。
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     以下为原文

  I cannot speak directly about the Rhode and Schwartz unit I have never worked with it. Most test equipment can set the a SRQ flag when data is ready. All you have to do is have your VEE program look for the SRQ to be set on the interface, then you can preform a read data to get your readings. You will have to look through the Rhode &Schwartz manual to see how to set this up as most equpiment will not set the SRQ unless it is configured to do so. There are other ways that equipment can let a program know data is ready, again looking through the manual is about all I can suggest.
 
Greg
 
 
Bigman8424 wrote:

I am trying to use VBA and GPIB commands, however I am having a problem with timing. I am first hitting Run SGL (single) and then "init:imm" and requesting Fetch EVM and reading it, however the timing for the init:imm takes 3 seconds for it to load and my program debugs. I tried the *WAI function after I placed the Init:Imm, however it did not work. I also tried the *OPC? command, however when I read in OpcOk$, it also came up as "1" and my evm value read in as "              ". (quotation with nothing in the middle). Any suggestions and comments other than putting in a manual delay. I want Rhode and Schwarz to tell me when the EVM value is ready to read, other than it reading in "          " (blank), if it is not ready for it to wait for it to be ready, and then read in the value.




Thanks
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我最近使用了“* WAI”很有效果。
诀窍在于排序。
首先你必须关闭连续触发，我正在使用的设备是“INIT：CONT OFF”，然后发送你的“INIT：IMM; * WAI”或“IMIT：IMM”然后“* WAI”.Gary VoltzSASTO4Test
设备和维护和校准中心设施管理服务技术和资产服务澳大利亚航空公司电子邮件：gary.voltz@airservicesaustralia.com _____ Airservices AustraliaPh1300 301 120（澳大利亚境内）Ph +61 7 3866 3382（澳大利亚境外）传真+ 61 7 3866 3531HYPERLINK“http：
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_____来自：Bigman8424 [mailto：bigman8424@yahoo.com]发送时间：2007年8月21日星期二4:06 AMTo：VRFCc：VRFS主题：[vrf] Init的时序问题：ImmI我正在尝试使用VBA和GPIB命令，但是我
有时间问题。
我首先点击运行SGL（单个）然后“init：imm”并请求获取EVM并读取它，但是init：imm的时间需要3秒才能加载并且程序调试。
我放置了Init：Imm之后尝试了* WAI功能，但它没有用。
我也试过* OPC？
命令，但是当我在OpcOk $中读取时，它也显示为“1”，我的evm值读作“”。
（报价中间没有任何东西）。
除了手动延迟之外的任何建议和评论。
我希望Rhode和Schwarz告诉我EVM值何时准备好读取，除了读取“”（空白），如果还没有准备等待它准备就绪，然后读入值。
谢谢_____是一个更好的万人迷。
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     以下为原文

  I’ve used “*WAI” a lot recently to great effect. 

 

The trick is in the sequencing. First you have to turn off continuous Triggering, with the devices I’m using that is “INIT:CONT OFF”, then send your “INIT:IMM;*WAI” or ”IMIT:IMM” then “*WAI”.

 

Gary Voltz
SASTO4

Test Equipment and Maintenance and Calibration Centre

Facilities Management Services

Technology and Asset Services

Airservices Australia


E-mail: gary.voltz@airservicesaustralia.com

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From: Bigman8424 [mailto:bigman8424@yahoo.com]
Sent: Tuesday, 21 August 2007 4:06 AM
To: VRF
Cc: VRF
Subject: [vrf] Timing Problem with Init:Imm

 

I am trying to use VBA and GPIB commands, however I am having a problem with timing. I am first hitting Run SGL (single) and then "init:imm" and requesting Fetch EVM and reading it, however the timing for the init:imm takes 3 seconds for it to load and my program debugs. I tried the *WAI function after I placed the Init:Imm, however it did not work. I also tried the *OPC? command, however when I read in OpcOk$, it also came up as "1" and my evm value read in as "              ". (quotation with nothing in the middle). Any suggestions and comments other than putting in a manual delay. I want Rhode and Schwarz to tell me when the EVM value is ready to read, other than it reading in "          " (blank), if it is not ready for it to wait for it to be ready, and then read in the value.




Thanks

 

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