PXI R Series PWM Behavior

Hello,
I created a simple PWM using a PXI 7851R and it was working fine for the past month or so however now it is behaving oddly. Previously if I provided a min and max output, the generated pulse would be between those two values. Now what is happening is the generated pulse is always centered over zero with a min and max value equal to half the range between my entered values. So for example if I wanted a pwm signal from 0-6V, I previously would enter a min of 0V and max of 6V but now that results in a signal from -3 to 3 "[ (6V-0V) / 2 ]". As you can see in the snippet, all I'm doing is updating the AO channel with the max value, waiting, then updating it with the min value so I can't figure out why it is behaving this way. I'm using an SCB-68A connector block so I thought maybe the switch settings got messed up but they appear to be set to direct feedthrough. Any ideas why this is occurring?
- Will
Post CLD and when I'm a CLA when someone asks who I am, I can spin around in my chair and say "I am... the architect."
Solved!
Go to Solution.
Attachments:
pwm.png ‏69 KB

One of the AO channels on another connector block was shot previously so I was thinking this was a similar problem but it was actually just some plain dumb user error on my part and I forgot to put my scope in DC mode .
Post CLD and when I'm a CLA when someone asks who I am, I can spin around in my chair and say "I am... the architect."

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Message Edité par Inpriser le 08-18-2006 02:54 AM
Attachments:
Synchro 10 MHz PXI AO.vi ‏34 KB

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"mlarmand" <[email protected]> wrote in
message
news:g9esb8$71t$[email protected]..
> I'm making an online portfolio and trying to have the
option that users
> can
> scroll through the set of images at full size. I've
tried several ways
> and
> cannot quite get it. Right now, I have it set up as a
series of behaviors
> on a
> timeline. I set each layer to the exact same L & T
coordinates. Also, my
> images are the same size. However, when you scroll
throught the
> slideshow, the
> images are showing up in several different locations.
I've tried
> automatic
> advances and manual, but I still have the same problem.
Any direction
> would be
> greatly appreciated, even if it involves starting the
process again.
> However,
> I don't know any code. Here is the link, thanks for your
help!!
>
> Michelle
>
>
http://mlarmand.iweb.bsu.edu/Portfolio/blue%20lab%20main.html
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