What is the MDO4000 RF input attenuation range (in dB)?

What is the MDO4000 RF input attenuation range (in dB)?

RF vertical measurement range is +30 dBm to DANL. 

RF vertical settings are 1 dB/div to 20 dB/div in a 1-2-5sequence.

Internally, the RF attenuator settings are from 0 to 45 dB, in 5 dB steps and they are automatically adjusted as Reference Level is changed.