NI USB-6501 outputs signal when plugging in

[tinglee]

I received a new USB-6501. After installing software and hardware, I noticed it gave a "on" output signal (and turn on my down stream instrument) when plugging/unplugging USB cable and turning on computer. It is connected to a Dell OptiPlex3040 with Win7 64 bit. It works fine otherwise. Does anyone have similar experience or have a solution?

[bahannah]

tinglee,

The USB-6501 does not have a default high or low state when turned on, but instead defaults to a high impedance input. 

You can read more about the issue in this forum post, which also describes a potential workaround.

Regards,

Hannah 

Applications Engineering 

National Instruments 

www.ni.com/support