Rohde & Schwarz SMBV100A, Руководство пользователя

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Instrument Function
R&S
®
SMBV100A
174 Operating Manual 1407.6062.32 ─ 08
The correlation is as follows:
"Level" (in header) = "RF output level" (Level in menu) + "Level offset" (Offset in menu)
The RF output is protected against overloading by an external signal applied to the RF
output (see
​
"Reverse Power Protection" on page 178).
Setting the RF level
To change the RF level, press the LEVEL key and enter the desired level. Changes to
the RF level have an immediate effect (without confirmation with the Enter key) on the
output signal.
RF Level
Enters the RF level, considering the level offset (see
​
"RF level vs. RF output
level" on page 173).
Note: Some SW options have specific requirements about the calculation of the level of
the output signal, e.g. the displayed value corresponds to the level at the start simulation
time, there are correction coefficients to be applied, etc. In cases like this, the displayed
value in the header of the instrument does not always correspond to the level at the RF
output!
When working with a SW option, always refer to the corresponding documentation for
related specific information.
dBm, dBuV, mV and uV can be used as the level units. The 4 unit keys are labeled with
these units.
Note: The SCPI command sets the level of the "Level" display, i.e. an entered level offset
is taken into consideration in the level value.
SCPI command:
​
[:
​
SOURce<hw>]:
​
POWer[:
​
LEVel][:
​
IMMediate][:
​
AMPLitude]
​
on page 676
5.4.8.2 RF Level Dialog
To open the "RF Level/EMF" dialog, select "RF/A Mod > Configure > Level/EMF" or use
the MENU key under "RF/A Mod".
The combined "RF Level / EMF" dialog is divided into the several sections.
The top sections of this dialog provide access to the level settings.
The offset-free level, level offset and level limit are set in the top section of the menu. The
attenuator mode is set in the "Attenuator Settings" section.
The step width which is used when setting the level using the rotary knob (with "Variation
Active On") is set in the "User Variation" section.
RF Signal and Analog Modulations - RF Block