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PXI-5152 noise when "active"

PXI gurus,

I am running a particularly noise sensitive experiment and it seems that the PXI-5152 itself is generating noise whenever the active LED turns from green/yellow to off (temporarily). I wanted to understand, if the "active" button is off, that means the PXI isn't triggering, but I have a laser constantly firing, so hypothetically it should always be triggering (10 Hz), but it seems that sometimes it stops for ~500 mS and then continues.

Is it possible that when the active button is on that it is generating some sort of transient noise? (noise width 10%-90% rise time is approximately 250-750 nS and the noise is around 150 mV when my baseline is 50 mV after amplifying my electrical signal 100X with a Tegam 4040B amplifier.) If so, is there a way I can mitigate this?

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Hello bravedonxiote,

 

The transition from Green/Amber to off in the active LED indicates that the module is not armed, triggered or acquiring a waveform.

Have you checked the Access LED to see if it is off as well?

 

Regards,

Luis C.

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