noisy analogy output from USB6353

[GeorgeLiu]

I have a USB 6353 and all the analogy output channels have very high noise. See attched image. I ouput 50mV DC to both channle 0 and 1 and the signals are exteamly noisy. Any comment on how to solve this? 

[Rairiki]

Could you explain a little bit more about how you are setting this 50mV DC signal. For example have you tried to create a Task from NI MAX.

Also could you tell how are doing the measure of this signal

[GeorgeLiu]

I output  the 50mW using the NI MAX test panel.

[GeorgeLiu]

I simply output 50mW using the NI MAX Test panel and test the output using an oscilloscope. I have another 6353(PCI-e model), which gives much lower noise.