Forward power decrease, reflected power increase - ICP-MS 7700x


I am new at our ICP-MS 7700x and in the moment after tuning the forward power decreased from 1600 W to approx. 1200 W and the reflected power increased from approx. 10 W to approx. 110 W.

I have no idea why this happened and to fix it.

After Auto RF correction there is 1600 W again and when I start a batch it decreased again.

Can anyone help me please!

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