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Rick314

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Everything posted by Rick314

  1. Thanks atttila and I see now that no single default Symmetry value makes sense for all AWG signal Types. But I think a better implementation would have been a separate Symmetry (or Power) setting for each Type. That way they could have different default values and switching from Type A to B to A would yield the original A waveform. Are there issues with this approach? (I'm not saying it should change now, just discussing if that would have been a better initial implementation.)
  2. Thanks attila, but I discovered this is a backward incompatibility in the Waveforms application. I have over 20 workspace files from 2019 that worked well in Waveforms version 3.12.2. I found other errors trying to run those workspace files in version 3.18.1, so went back to version 3.12.2. Now the workspace file in this example behaves as shown below, with no problem going from 500 Hz to 200 Hz. For me, advancing to the latest version isn't worth finding and reporting and doing workarounds for the backward incompatibility problems. (I am a retired software Quality Assurance engineer for Hewlett-Packard test equipment. I think more regression testing and emphasis on backward compatibility should be a higher priority with your software engineers.)
  3. SinePower "Power" has range -100 to 100 (correct) and other waveform Types have "Symmetry" with range 0 to 100 (correct). "Power" and "Symmetry" are different settings with different ranges. The issue I want to focus on is that both Power and Symmetry get initialized (rather than being maintained) when "Type" is changed. This is inconsistent with at least 4 other related settings.
  4. I am using an Electronics Explorer board with AWG1 to Scope 1 DC and AWG2 to Scope 2 DC. Other settings shown in image 1, notably AWG1 and 2 "Synchronized" to demonstrate the phase difference of 90 degrees. Change AWG1 and 2 frequency to 200 Hz and see image 2. I would expect 2 sine waves 90 degrees different in phase. What is going on?
  5. I think this is a user interface defect and worse than the thread title implies. A better title would be "Symmetry changes value when 4+ related settings are maintained". As an example set Type = Sine and change Frequency, Amplitude, Offset, Symmetry, and Phase (5 details of Sine). Change Type to Square. All 5 detail settings are maintained except Symmetry and it changes to 50%. Symmetry should maintain its value like the other 4 settings do.
  6. Thanks reddish, but based on the user interface SinePower doesn't have a "Symmetry" setting. It has a "Power" setting instead. Also now I see this is a user interface sequence dependency -- Changing Type always resets Symmetry or Power to a default value. For example: Sine, Symmetry to 75%, Square. Symmetry gets set back to 50%. So it appears "Power" and "Symmetry" are two names for the same setting, that gets reset to default on each Type change.
  7. To replicate this start Waveforms 3.18.1, choose instrument Wavegen, Type: SinePower, Power: -99. See the given image. Change "Type:" to Sine and back to SinePower. The "Power:" setting is reset to 0 instead of staying at -99, producing a normal sine wave instead of the SinePower pulses. I think the -99 value should be maintained so I don't have to re-enter it after every change to Type. Is this a Waveforms defect?
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