Signal Express 2011: reproducible bugs, hangs, crashes, or unexpected behaviors

[OKors]

... and one more attachment

[OKors]

I should also add. Although this is in the 2011 thread, this is Signal Express 2012 I'm working with.

[gmart]

Do you see this behavior in 2011? Can you provide steps to reproduce this behavior without having to have your configuration?

[OKors]

We dont have 2011 running on any of our PC's anymore (they've all been updated to 2012), I do however, recall this behavior cropping up at one point before we updated. At the time I was troubleshooting another tech's test setup, I rearranged some channels, the signals got mixed up, which confused me even further, so I shutdown Signal Express and rebuilt the project file from scratch. No issues beyond that; but I didnt rearrange the channels after that either.  

So although I cannot test this behavior on 2011 anymore, I do recall it being an issue once, I just didnt bother to flesh it out at the time. .

Here are my steps taken to recreate the issue.

• Add a DAQmx Acquire> Analog Input> Custom Voltage with Excitation step (may work with other signal types but this is reproducible on my end).
• Add three or more channels to your task and assign them a custom scale; arbitrary slopes are fine for this exercise but preferably something with various large-enough offsets which you can quickly identify at a glance. For my setup I had a load cell with a large 400lb offset, and a couple displacement sensors with different offsets.
• Rename the channels in the DAQmx Acquire step to something you can identify with. Load, Displacement, Displacement 2, etc..
• Add an Amplitudes and Levels step and deselect Export RMS
• From the A&L step, drag a Load signal and Deflection signal into a Dataview graph and view it as Scalar XY (expand to view the legend for visual purposes)
• Add a display beneath the xy graph and drag another load signal into it: view it as Large Display
• Go back to DAQmx settings; click RUN to start acquiring data and notice the signals and the channel names (at this point it may be useful to change the preview window from chart to Table as shown in my first screenshot). Keep note of which values are associated to what channel name . Stop acquisition
• While still in the DAQmx Acquire step window, click "Details" in the channel Configuration pane to expand the panel.
• Highlight a channel and use the Up or Down arrow to reposition the channel in the list. Do this to all the channels so the whole list is reorganized.
  You'll notice in the preview pane at the top under "Channel" the channel names move as you change positions with the arrows (the values do not)
• Run some data again and notice the signal values relative to the channel name. If you put a load channel where a displacement signal used to be you should notice a high value with a channel name of "Displacement".
• Also, notice in the dataview tab, the signal values change while the names remain the same. You'll see this in the XY graph legend as well as the Numerical Display.

 Beyond that, you should be able to save the test, shutdown SigEx, open the saved project file and your reassigned channel order should match the names.

Please let me know what you discover and/or if these steps are not clear enough.

Thanks George.

[gmart]

I was able to see the problem with rearranging the DAQ signals but didn't get the scaling to work right to see the values not matching in the graphs (I was using simulated devices). What might be helpful is the MAX configuration and SE project. I created CAR 378576 to track the issue.

[OKors]

I have a cDAQ 9172 at my desk with a 9237 and some voltage modules. I used three channels from the 9237 and created some very arbitrary custom scales to each. No sensors are connected to the module but with the scaling as such you can see large signal differences between the open channels. The first load channel is seeing a -71lb offset, the second is Displacement which is at -22m inches, the third channel has an offset of -127.

Attached are the SE and MAX files based on my configuration.

The channels are in an unmodified order so when you open the project, run some data and take note of the initial signal values. Then rearrange the channels so that none of the channels are in their original locations.

You should see the lower displacement signal (-22m inches) appear on a load channel and one of the higher Load signals appear on the Displacement channel.

I've attached more screenshots so you can see the before and after signal order and the changes to the graphs after rearranging the channel locations

[Queen]

Hello, 

I recently started using signal express for tektronix 2.5.1 and when I use the run once and record while running, everytime I try to convert it to ASCII. The message converting to Acome pops up but never go away and the conversion never ends.  So I have to force it to close.  When I use record with run not run once I have no problem At all. 

[JasoNI]

Hello,

Do you think you could explain a bit more on how you are setting up your program? If you could reproduce the issue with the most basic program possible, and post your settings for that task, it would be helpful.

[Queen]

I got a new error now everytime I open a saved project. Please check the attachment!

[Queen]

Basically when I use the run once (option as shown in the picture) the whole thing freeze with the message (converting to ASCII) this only happen when I use run once and record while running