AcquirePowerReadingSex错误问题

我正在尝试使用功率计执行源功率校准，方法是从运行matlab的远程PC发出DCOM命令。
如果我使用PNA的前面板，源功率校准工作正常。
功率计：地址为13的gpib上的N1912A，通道A上的E4413A传感器：PNA：N5242A，端口1，测量让app = pna 835x应用程序对象我的代码* app.Preset; * *％设置频率和点数* *
app.ActiveChannel.StartFrequency = 60e6; * * app.ActiveChannel.StopFrequency = 2.51e9; * * app.ActiveChannel.NumberOfPoints = 101; * *％将参数更改为非比例R1 * * app.ActiveMeasurement.ChangeParameter（'R1'，1
）; * *％config功率计测量* * app.SourcePowerCalibrator.PowerMeterGPIBAddress = 13; * * app.UsePowerSensorFrequencyLimits = 0; * * app.SourcePowerCalibrator.IterationsTolerance = 0.05; * * app.SourcePowerCalibrator.MaximumIterationsPerPoint = 5; * * app
.SourcePowerCalibrator.ReadingsTolerance = 0.05; * * app.SourcePowerCalibrator.ReadingsPerPoint = 3; * * app.SourcePowerCalibrator.SetCalInfoEx（1,1,0.0，'True'）; * * pschan = app.SourcePowerCalibrator.PowerSensors.Item（1）
.PowerMeterChannel; * * app.SourcePowerCalibrator.AcquirePowerReadingsEx（'naPowerMeter'，pschan，'True'）; *最后一行
导致以下错误：+ ???
调用错误，调度异常：+ +描述：方法AcquirePowerReadingsEx失败：找不到通道。+我已经尝试了以下所有版本的AcquirePowerReadingsEx命令。
它们都返回上面列出的相同错误。
* app.SourcePowerCalibrator.AcquirePowerReadingsEx（0，'ASEN'，1）;
* app.SourcePowerCalibrator.AcquirePowerReadingsEx（'naPowerMeter'，'ASEN'，'True'）;
* app.SourcePowerCalibrator.AcquirePowerReadingsEx（0，'naPowerSensor_A'，1）;
* app.SourcePowerCalibrator.AcquirePowerReadingsEx（'naPowerMeter'，'naPowerSensor_A'，'True'）;
* app.SourcePowerCalibrator.AcquirePowerReadingsEx（0，'E4413A'，1）;
* app.SourcePowerCalibrator.AcquirePowerReadingsEx（'naPowerMeter'，'E4413A'，'True'）;
* app.SourcePowerCalibrator.AcquirePowerReadingsEx（0，'E4413A'，1）;
* app.SourcePowerCalibrator.AcquirePowerReadingsEx（'naPowerMeter'，'E4413A'，'True'）;
* app.SourcePowerCalibrator.AcquirePowerReadingsEx（0，'1'，1）;
* app.SourcePowerCalibrator.AcquirePowerReadingsEx（'naPowerMeter'，'1'，'True'）;
注意，以下三个命令工作正常：* app.SourcePowerCalibrator.CheckPower（0,80e6）* app.SourcePowerCalibrator.CheckPower（'naPowerSensor_A'，80e6）* app.SourcePowerCalibrator.CheckPower（pschan，80e6）％pschan定义如上
帮助将不胜感激。编辑：golfnut于2012年8月15日下午3:08



     以下为原文

  I'm trying to perform a source power calibration with a power meter by issuing the DCOM commands from a remote PC running Matlab.  The source power calibration works fine if I use the front panel of the PNA.

Power Meter: N1912A  on gpib with address 13, with E4413A sensor on channel A
PNA: N5242A, port 1, measurement  

let app = the pna 835x application object

my code
*app.Preset;*

*%set frequencies and number of points*
*app.ActiveChannel.StartFrequency=60e6;*
*app.ActiveChannel.StopFrequency=2.51e9;*
*app.ActiveChannel.NumberOfPoints=101;*

*%change parameter to unratioed R1*
*app.ActiveMeasurement.ChangeParameter('R1',1);*

*%config power meter measurements*
*app.SourcePowerCalibrator.PowerMeterGPIBAddress=13;*
*app.UsePowerSensorFrequencyLimits = 0;*
*app.SourcePowerCalibrator.IterationsTolerance = 0.05;*
*app.SourcePowerCalibrator.MaximumIterationsPerPoint = 5;*
*app.SourcePowerCalibrator.ReadingsTolerance = 0.05;*
*app.SourcePowerCalibrator.ReadingsPerPoint = 3;*

*app.SourcePowerCalibrator.SetCalInfoEx(1,1,0.0,'True');*
*pschan=app.SourcePowerCalibrator.PowerSensors.Item(1).PowerMeterChannel;*

*app.SourcePowerCalibrator.AcquirePowerReadingsEx('naPowerMeter',pschan,'True');*

The last line causes the following error:

+??? Invoke Error, Dispatch Exception:+
+Description: Method AcquirePowerReadingsEx failed: Channel not found.+

I've tried all of the following versions of the AcquirePowerReadingsEx command.  They all return the same error listed above.

* app.SourcePowerCalibrator.AcquirePowerReadingsEx(0,'ASEN',1);
* app.SourcePowerCalibrator.AcquirePowerReadingsEx('naPowerMeter','ASEN','True');
* app.SourcePowerCalibrator.AcquirePowerReadingsEx(0,'naPowerSensor_A',1);
* app.SourcePowerCalibrator.AcquirePowerReadingsEx('naPowerMeter','naPowerSensor_A','True');
* app.SourcePowerCalibrator.AcquirePowerReadingsEx(0,'E4413A',1);
* app.SourcePowerCalibrator.AcquirePowerReadingsEx('naPowerMeter','E4413A','True');
* app.SourcePowerCalibrator.AcquirePowerReadingsEx(0,'E4413A',1);
* app.SourcePowerCalibrator.AcquirePowerReadingsEx('naPowerMeter','E4413A','True');
* app.SourcePowerCalibrator.AcquirePowerReadingsEx(0,'1',1);
* app.SourcePowerCalibrator.AcquirePowerReadingsEx('naPowerMeter','1','True');

Note, the following three commands work fine:
* app.SourcePowerCalibrator.CheckPower(0,80e6)
* app.SourcePowerCalibrator.CheckPower('naPowerSensor_A',80e6)
* app.SourcePowerCalibrator.CheckPower(pschan,80e6) %pschan is defined above

Any help would be appreciated.

Edited by: golfnut on Aug 15, 2012 3:08 PM