向 CMW500 发送SCPI指令，报-114 header suffix out of range 错误

Hi-Lu 2016-07-01 09:38:42

想做一个天线测试的工具，需要程控CMW500，按照手册通过VISA相关的一些接口向CMW500发送SCPI指令，但是发现CMW500 只能对*IDN? *OPC? *RST *CLS等简单命令有响应，对用户手册上跟天线测试相关的指令好像不识别，所有的都报-114 header suffix out of range 错误，请教大家，这是什么原因呢？

本人的PC上已经安装NI-4882的驱动程序。已经想到的可能原因有：

1. 命令之间的延时不够，导致出错？---------加长了timeout时间，没有作用；

2.PC上的环境有问题，缺少什么驱动？——请教了尝试成功的伙伴们，都说不用其他的驱动了，罗德公司的技术支持说的如下链接的驱动也尝试安装，仍然没有效果；
https://www.rohde-schwarz.com/driver/cmw500/

3.第一个命令之前缺少什么命令？——缺少什么，还不知道，请大家看看，是不是缺少什么步骤。

SCPI命令如下：

VisaWriteCmd("SYSTem:ERRor?");
vstatus = viRead(m_vi,(ViPBuf)szRead,iCount,&iCountReal);
printf("system error info is %s!\n", szRead);

VisaWriteCmd("*IDN?");
vstatus = viRead(m_vi,(ViPBuf)szRead,iCount,&iCountReal);
printf("the session to the device info is %s!\n", szRead);

vstatus =viPrintf(m_vi, "ROUTe:WLAN:MEAS:SCENario:SALone RF1C, RX1"); //non-signaling, connector, converter
VisaWriteCmd("SYSTem:ERRor?");
vstatus = viRead(m_vi,(ViPBuf)szRead,iCount,&iCountReal);
printf("system error info is %s!\n", szRead);

vstatus =VisaWriteCmd("CONFigure:WLAN:MEAS:RFSettings:EATTenuation 20"); //loss
vstatus =VisaWriteCmd("CONFigure:WLAN:MEAS:RFSettings:FREQuency:BAND B24Ghz");
vstatus =VisaWriteCmd("CONFigure:WLAN:MEAS:RFSettings:FREQuency 2412E+6");
vstatus =VisaWriteCmd("CONFigure:WLAN:MEAS:RFSettings:ENPower 30");
vstatus =VisaWriteCmd("CONFigure:WLAN:MEAS:RFSettings:UMARgin 0");
vstatus =VisaWriteCmd("CONFigure:WLAN:MEAS:RFSettings:MLOFfset 8");
vstatus =VisaWriteCmd("CONFigure:WLAN:MEAS:ISIGnal:BTYPe MIXed");
vstatus =VisaWriteCmd("CONFigure:WLAN:MEAS:ISIGnal:BWIDth BW20");
vstatus =VisaWriteCmd("CONFigure:WLAN:MEAS:ISIGnal:ELENgth RED");
vstatus =VisaWriteCmd("CONFigure:WLAN:MEAS:ISIGnal:STANdard BDSSs");

//VisaWriteCmd("CONFigure:WLAN:MEAS:MEValuation:RESult ON,ON,ON,ON,ON,ON,ON,ON\n");
vstatus =VisaWriteCmd("CONFigure:WLAN:MEAS%d:MEValuation:RES:EVM ON");
vstatus =VisaWriteCmd("CONFigure:WLAN:MEAS:MEValuation:REPetition CONTinuous");
vstatus =VisaWriteCmd("CONFigure:WLAN:MEAS:MEValuation:SCONdition NONE");
vstatus =VisaWriteCmd("CONFigure:WLAN:MEAS:MEValuation:SCOunt:MODulation 100");
vstatus =VisaWriteCmd("CONFigure:WLAN:MEAS:MEValuation:SCOunt:PVTime 100");
vstatus =VisaWriteCmd("CONFigure:WLAN:MEAS:MEValuation:SCOunt:TSMask 100");

vstatus =VisaWriteCmd("TRIGger:WLAN:MEAS:MEValuation:SOURce 'IF Power'");/////////////////////////////
vstatus =VisaWriteCmd("TRIGger:WLAN:MEAS:MEValuation:THReshold -20\n");//TriggerLevel
vstatus =VisaWriteCmd("TRIGger:WLAN:MEAS:MEValuation:TOUT 3"); // timeout
//vstatus =VisaWriteCmd("ABORt:WLAN:MEAS:MEValuation\n");

vstatus =VisaWriteCmd("INITiate:WLAN:MEAS:MEValuation");

VisaWriteCmd("SYSTem:ERRor:ALL?");
vstatus = viRead(m_vi,(ViPBuf)szRead,iCount,&iCountReal);
printf("system error info is %s!\n", szRead);
Sleep(2000);

vstatus =VisaWriteCmd("FETCh:WLAN:MEAS:MEValuation:STATe:ALL?");
//memset(szRead, '\0', 10000);
do
{
Sleep(500);
vstatus = viRead(m_vi,(ViPBuf)szRead,iCount,&iCountReal);
string retstr(szRead);
iRes=retstr.find("RDY");
} while (iRes!=0&&--i>0);

if (i==0)
{
VisaWriteCmd("STOP:WLAN:MEAS:MEValuation");
delete szRead;
return "fail";
}

vstatus =VisaWriteCmd("FETCh:WLAN:MEAS:MEValuation:MODulation:DSSS:AVERage?");
vstatus = viRead(m_vi,(ViPBuf)szRead,iCount,&iCountReal);
VisaWriteCmd("STOP:WLAN:MEAS:MEValuation");

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