不会扫描通道列表

我正在尝试更改34903A执行器板上的通道状态，同时扫描34901A多路复用器板上的通道。
外部触发器（旋转编码器）用于启动扫描扫描。在我能够关闭执行器板上的特定通道之前，不会有外部触发器。
此通道将为DUT供电，旋转编码器将监视其运动。因此，虽然daq处于扫描模式，但当我尝试关闭通道时，它不会扫描通道列表。似乎更改了命令
通道状态被忽略。
这是该装置的正确操作吗？我可以配置扫描参数并在执行器通道关闭后启动扫描，但是我缺少DUT初始运动的数据。是否可以命令通道不在
扫描列表，在扫描模式下？谢谢，杰夫



     以下为原文

  I am attempting to change the state of channels on a 34903A actuator board, while scanning channels on 34901A multiplexer board. An external trigger (a rotary encoder) is used to initiate the scan sweep.
There will be no external trigger until I am able to close a specific channel on the actuator board. This channel will feed power to a DUT, and the rotary encoder will monitor its motion.
So although the daq is in scan mode, it is not sweeping the channel list when I attempt to close the channel.
It appears that the commands to change the channel states are ignored. Is this the correct operation of the unit?

I could configure the scan parameters and initiate the scan AFTER the actuator channel is closed, but then I'm missing data for the initial motion of the DUT.
Is it possible to command channels not in the scan list, while in scan mode?

Thanks,
Jeff