LLRF Commissioning of the European XFEL RF Gun and Its First Linac RF Station

The European X-ray free electron laser(XFEL) at the Deutsches Elektronen-Synchrotron ( DESY), Hamburg Germany is in its construction phase. Approximately a third of the super-conductive cryomoduleshave been produced and tested. The RF gun is installedsince 2013; periods of commissioningare regularly scheduled between installationphases of the rest of the injector. The first linac, L1, consisting of 4 cryomodulespowered by one 10 MW klystronis installedand being commissioned. This contribution reports on the installationand preparation work of the low-level radio frequency system (LLRF) to perform the commissioningof the XFEL first components. The commissioningplans, schedule and first results are presented.