ADInstruments AD8000 Series Instruction Manual page 102

AD8000 Series Spectrum Analyzer Instruction
Manual
(4) Ref Offset
If level offset is opened, the amplitude of waveform will be magnified and
the channel power relative value will also be changed. The following figures
show the measurement results under different conditions of the level offset.
86
Fig. 3-70 Wave of 5dB/Div
Fig. 3-71 Ref Offset OFF