为什么多个34970A和BL3进行通信时不能同时启动所有DAQ？

我在Win 7 32位下运行BL3。
我有2个34970A在GPIB上进行通信。
我可以开始使用run all按钮多次扫描，但过了一会儿，只有第一个DAQ会启动并扫描。
当我试图阻止它们时，其中一个停止但另一个仍然在BL中有运行框。
如果我点击它，我收到消息“MSG_STOPPING_UNDER_PROGRES”。
停止此问题的唯一方法是关闭BL并重新启动它。
然后它会正常工作几次，然后再次开始行动。
有任何想法吗？
谢谢，
瑞安
编辑：34970是34972



     以下为原文

  I am running BL3 under Win 7 32 bit. I have 2 34970A's communicating on GPIB.

I can start both of them scanning with the run all button several times, but after a while only the first DAQ will start and scan.  When I try to stop them, one of them stops but the other one still has the running box there in BL. If I click on that, I get the message "MSG_STOPPING_UNDER_PROGRES".  The only way to stop this issue it is to shut down BL and restart it.  Then it will work fine for a few times, then start acting up again.

Any ideas?

Thanks,

Ryan

Edit: 34970 was 34972