Rigol DSA875 Manual do Utilizador descarregar pdf (Página 65)

Chapter 2 Front Panel Operation RIGOL

User’s Guide for DSA800 Series

2-13

Figure 2-5 After Auto Scale

Ref Level

Set the maximum power or voltage can be currently displayed in the window. The

value is displayed at the upper left corner of the screen grid.

Key Points:

 The maximum reference level available is affected by the maximum mixing

level, input attenuation and preamplifier. When you adjust it, the input

attenuation is adjusted under a constant maximum mixing level in order to

fulfill the following inequality:

mixPARFRef

aaL ≤

+−

(2-3)

Wherein,

Ref

and

mix

denote the reference level, input

attenuation, preamplifier and maximum mixing level respectively.

 You can modify this parameter using the numeric keys, knob or direction keys.

For more details, please refer to “Parameter Setting”.

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Rigol DSA875 Manual do Utilizador Página 65