For checking on working of NI 9476

To check working of NI 9476 installed on cRIO-9063,

I tried digital output used by LabVIEW2015, 

after wirinfg the COM port and DO#0 of the NI 9476 to an oscilloscope.
But I cound not see any output response on the oscilloscope.
Is there something wrong with my wiring?

I checked the outputs on an oscilloscope in both DC and AC mode.
DO#1 to 31 ports was also checked and there is no response. 
The NI 9476 is a D-SUB type, and I connected each pin by clipping.
In addition, I connected a resistor (10 or 150ohm) between the DO pin and the oscilloscope. That was no response.
Finally, I connected the Vsup port and Com port to the oscilloscope and I expected that the step waveform would be output.

But there is no change.

I can see analog output signals via NI 9264 installed on cRIO-9063.

I suspect NI 9476 initial defect.

Thank you