You can perform a
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) or by pressing <CTRL+SHIFT+U>. You may check the The definition of unwanted emissions mask can be checked by calculating the actual unwanted emissions for given mask in a given VLR bandwidth applying a certain ILT-VLR frequency offset: 
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Figure 55: Access to testing unwanted emission function Anchor F057 F057
This feature allows you to directly extract the uwanted unwanted emission by entering the frequency separation, the receiver bandwidth and the spectrum mask as shown in Figure 5856. 
Figure 5856: Illustration of the unwanted emission function check routine Anchor F058 F058
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