# Multitone analysis parameters

**URL:** <https://forum.plexim.com/t/multitone-analysis-parameters/989>\
**Category:** PLECS\
**Tags:** plecs-standalone, multitone-closedloop, analysis\_tools\
**Created:** [March 21, 2021, 5:49am UTC](https://forum.plexim.com/t/multitone-analysis-parameters/989 "2021-03-21T05:49:47Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Lello](https://avatars.discourse-cdn.com/v4/letter/l/2bfe46/32.png) [@Lello](https://forum.plexim.com/u/Lello)\
**Post date:** [March 21, 2021, 5:49am UTC](https://forum.plexim.com/t/multitone-analysis-parameters/989/1 "2021-03-21T05:49:47Z")

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Hi there

I am running a closed loop simulation, and trying to measure the transfer function of my converter (plant) using the multitone analysis.

My simulation starts at t=0, and at that time there is a transient, which takes 10 s to settle. Therefore, I am running the Multitone analysis with these settings, where I set “Init. simul period = 10”. Just wondering wether this is correct, ie. is the multitone analysis is being performed only after 10 s that the simulation has been running? i.e is the result of the multitone meaningful and representing a perturbation occurring at steady state for my circuit (which settles after 10 s)?

 ![62](https://europe1.discourse-cdn.com/flex006/uploads/plecs/original/1X/29e30668914ea55a2c081307125667cf43147d46.jpeg)

 ![62](https://europe1.discourse-cdn.com/flex006/uploads/plecs/original/1X/04a330980201f81948ac726964e1bd0967f13ac8.jpeg)

Thank you

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**Author:** ![Kris\_Eberle](https://dub1.discourse-cdn.com/flex006/user_avatar/forum.plexim.com/kris_eberle/32/6_2.png) [@Kris\_Eberle](https://forum.plexim.com/u/Kris_Eberle)\
**Post date:** [March 22, 2021, 2:52pm UTC](https://forum.plexim.com/t/multitone-analysis-parameters/989/2 "2021-03-22T14:52:17Z")

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Hi, yes, that is exactly correct!