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Forum: Analog Circuits LTSpice - "Multiple Instances of Flag" Error


von Bera I. (bera)


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Hi,

I am trying to develop an RF circuit, but quite inexperienced with 
LTSpice. As much as I check out on Google, I could not find a solution 
to my problem, where the Run command for Transient analysis returns 
"Multiple Instances of Flag" error. I examined the model file with a 
text editor, but it was no use, I could not find a specific error.

It is probably because of my mistake that the model I use is not well 
connected by its model files to the schematic. The model I used for 
SA612 mixer and an ss is attached.

Anyone knows how can I get rid of this "Multiple Instances of Flag" 
error?

: Locked by Moderator
von dev9 (Guest)


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Hierarchical schematics didn't need the ".include" command.

Changing this line into a comment (and assigning a value to C6) the 
simulation runs without error messages using the automatically generated 
symbol.

If you encounter further errors, please attach your "SA612.asy" too.

von Bera I. (bera)


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Thanks for the reply,

It really works well.

von ARAVIND (Guest)


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Hi,

Iam trying to include the file LT3471 it end up showing multiple 
Instance of flag error. Help me to fix this error.

                               Thank you!

von ARAVIND (Guest)


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Hi,

I am trying to include the file LT3471 it end up showing multiple
Instance of flag error. Help me to fix this error.

                          Thank you!

von Helmut S. (helmuts)


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Why do you try to include a schematic? That's not possible. Copy the 
schematic into this schematic or make a hierarchical schematic.

von cephas (Guest)


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Here are two diode data sheets. I want to focus on modeling SER30KE60 
because it has a lot of data.  The second data sheet provides 
definitions of typical reverse recovery parameters.



Tasks:



1. Write a .meas statement in diode test schematic that will find the 
diode peak reverse current.



2. Run a .meas script from the waveform viewer. Create a text file that 
has the same .meas statement and give it the ending .meas  The results 
are in the .log file



3. Run a .meas script from CMD.



4. Use Python to run a simulation, run .meas, and capture the peak 
reverse current from the log file.



the question is how to do this from datasheet without modeling a circuit

von Lothar M. (lkmiller) (Moderator)


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cephas wrote:
> the question is how to do this from datasheet without modeling a circuit
Pls start a new thread for a totally new question!

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