Saluki S5800E Series, Руководство пользователя

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voltage difference Δ V. In most cases, the instrument is in logarithm state, but in some special cases (for example
when measuring the modulation degree of AM), the line state is the better choice.
The common used unit in logarithmic state is dBm, dBµV and dBmV. The wave will not change with the change of
unit.
The common used unit in line state is mV, V, µV or nV. The wave will not change with the change of unit, too.
Fig.3.12 shows the difference measure results of the same signal one in “Log” state and the other in “Line” state.
Fig.3.13 Logarithmic state and Reference Level is -10dBm
Fig.3.14 Line state and Reference Level is 25.8mV
4) Unit
Pressing the “Ref Units” soft-key, the submenu will appear:
Choose the unit needed and then press the
RETURN key to cancel the setting.