# 3.4 Launching a simulation

A simulation is now ready to be launched. It should be noted that prior to beginning the simulation, SEAMCAT checks the consistency and suitability of certain input parameters (see ANNEX 19:).

Since the default operating frequency of the Interfering link transmitter is 900 MHz and the unwanted emission mask is not within the range of the Victim link receiver, SEAMCAT automatically complains and displays a warning window.

[![image.png](https://wiki.cept.org/uploads/images/gallery/2026-04/scaled-1680-/ebXRMOcvBtkH1q8N-image.png)](https://wiki.cept.org/uploads/images/gallery/2026-04/ebXRMOcvBtkH1q8N-image.png)

<div class="rich-media-item mediaSingleView-content-wrap image-align-start css-15a6f30" data-layout="align-start" data-media-vc-wrapper="true" data-node-type="mediaSingle" data-renderer-start-pos="431" data-vc="media-single" data-width="837" data-width-type="pixel" id="bkmrk--1"><div class="css-4aye96"><div data-alt="" data-collection="contentId-494100" data-context-id="494100" data-file-mime-type="" data-file-name="file" data-file-size="1" data-height="198" data-id="9dc6a65b-d87b-4fe7-bb85-02c813f48c36" data-node-type="media" data-renderer-start-pos="432" data-type="file" data-width="837"><div class="_2rko18qm _vchhusvi _kqswh2mm _ect4ttxp _p12f1osq _c71l1osq _1bsb1qmm _4t3ine4n _1hlmd0i9 _1rquusvi _eg541i5c _mts3kb7n _1ntskb7n _yfmhtlke _5sb1v00u new-file-experience-wrapper" data-media-vc-wrapper="true" data-testid="media-card-view" id="bkmrk--2"><div class="_1reo15vq _18m915vq _2rko18qm _1e0c1txw _kqswh2mm _p12f1osq _1bsb1osq _4t3i1osq _c71l1osq media-file-card-view" data-cursor="pointer" data-test-media-name="94.png" data-test-progress="1" data-test-source="remote" data-test-status="complete" data-testid="media-file-card-view"></div></div></div></div></div><div class="fabric-editor-block-mark fabric-editor-alignment align-center" data-align="center" id="bkmrk-figure-94%3A-consisten">**Figure 94: Consistency check warning being prompted because the operating frequency of the interferer is not set-up properly**</div>Therefore, it’s better to select “**No - Cancel simulation and let me correct errors**” and define the operating frequency (1000 MHz) of the interfering link. These parameters do not affect the calculation of the dRSS. It is only to ensure that SEAMCAT does not experience any exceptions when running.