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Here are two scopes of the same simulation run for different run times 50s and 100s. For 50 s, the concerned parameter remains constant but not in case of 100s, it starts changing after ~17 s, but in negligible magnitude. has anyone faced the same problem, if yes, is there any explanation to it.
here are the images: 50 s: http://i.imgur.com/CKVlm9M.png