Agilent 6651A EE校验错误

您好，从1年开始，我使用Agilent 6651A电源来评估采用直流电位降系统的钢样下降。
该系统为样品提供10 A电流，由于几何形状的变化而改变其电阻。
仪器输入10 A持续30秒，然后给出0 A持续50秒（矩形波）。
这种情况每15分钟发生一次
在上一次测试期间，我无法收集到良好的数据，因为在恒定电流下，电位的波动约为0.05 V（通常约为0.005 V）。
除此之外，在打开仪器进行新采集时，显示屏给了我“EE CHECKSUM ERROR”。
我查看了手册，建议我进入校准模式以重置错误，但它不起作用。
你知道是什么原因引起了这个问题吗？还有其他方法可以恢复它吗？
请考虑我对电源系统的了解等于null ... :) *编辑（我通过labview应用程序管理我的所有收购）提前谢谢！
Federico编辑：federico.bassi于2014年11月10日上午8:50



     以下为原文

  Hi there,

since 1 year I'm using the Agilent 6651A power supply for evaluating the potential drop on a steel specimen with the Direct Current Potential Drop system. This system gives as input a 10 A current to a specimen which changes its resistance due to geometry change. The instrument gives an input of 10 A for 30 seconds and then gives 0 A for 50 seconds (rectangular wave). This happens every 15 minutes.
During the last test I was not able to collect good data because at constant current the fluctuation in the potential was about 0.05 V (while usually is about 0.005 V). In addition to this, while turning on the instrument for a new acquisition, the display gave me "EE CHECKSUM ERROR".
I looked in the manual which suggested me to enter calibration mode in order to reset the error but it did not work.
Do you know what caused this problem and also if there is another way to recover it?
Please consider that my knowledge about power supply systems is equal to null... :)

*edit(I'm managing all my acquisition through a labview application)

Thank you in advance!

Federico

Edited by: federico.bassi on Nov 10, 2014 8:50 AM