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AC analysis parameters for SINE source
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ae3k 4 years ago
I am quite new to EasyEDA and LTSPICE, but I have noticed something which seems like it could be a bug. I have a small project to simulate a filter from a particular radio [https://easyeda.com/ae3k/softrock-filter](https://easyeda.com/ae3k/softrock-filter) The spice simulation works, except I would like the baseline to be 0dB instead of -6dB.  When I do this in the desktop version of LTSPICE, the voltage source has this form: V1 N001 0 SINE(0 1 14000k) AC 2 The AC 2 part is what makes the baseline be 0 dB instead of -6 dB, as I understand it. Anyway, the line that seems to get sent by EasyEDA to LTSPICE says AC 1 0, as follows: V1 R1_1 GND SIN(0 1 14MEG 10M) AC 1 0 If I edit the line in the schematic to end with AC 2 0 instead, EasyEDA still appends AC 1 0, which yields V1 R1_1 GND SIN(0 1 14MEG 10M) AC 2 0 AC 1 0 and the net effect is that there is no change. So I have two questions.  My main question is how to get EasyEDA to send the particular line I want to LTSPICE?  For my schematic in EasyEDA, that would be V1 R1_1 GND SIN(0 1 14MEG 10M) AC 2 0 And I guess I am also open to suggestions about how to finagle the plot in EasyEDA to change the baseline in other ways.  More generally, I can do lots of customization in LTSPICE but in the EasyEDA interface to it, what comes back seems fixed. Thank you. PS: I noticed also that the resulting plot is logarithmic on the frequency axis, but I specified linear in the control-j dialog (and this is also seen in the .ac directive).  Should it not be linear in the frequency scale in the plot?
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andyfierman 4 years ago
Please change the category of this topic to Bug Report. Thanks.
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ae3k 4 years ago
@andyfierman Okay, I did.
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