Behavior PWM PXI R series

Hello

I created a simple PWM using a PXI-7851R and it worked very well for the past month or so but now it behaves strangely.  Previously, so I've provided a min and max power, the impulse generated would be between these two values.  Now what is happening, is that the momentum generated is always centered above zero with a min and max value equal to half the distance between my input values.  So for example if I wanted a 0 - 6V pwm signal, I previously would enter a 0V min and max of 6V, but now that translates a signal from-3 to 3 ' [(6V-0V) / 2]»  As you can see in the snippet, everything I do is update the AO channel with the max value, pending, then update with the min value so I can't understand why he behaves in this way.  I use a block of SCB-68 connection so I thought maybe the position of the switches I messed up, but they seem to be on the direct crossing.  Any ideas why this happens?

-Va

One of AO channels on another block of connection has been hit before, so I thought it's a similar problem, but it was actually only a few error simple user stupid on my part and I forgot to put my field in DC mode .

Tags: NI Software

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