Rohde & Schwarz SMF-B1, Руководство по эксплуатации

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Instrument Function
R&S
®
SMF100A
180 Operating Manual 1167.2319.02 ─ 12
The value of the RF level is displayed in the level field in the header of the display
("Level"). This field provides the direct input of the RF level value. Alternatively, you
can enter the level in the "Level/EMF/..." dialog.
Note that the displayed RF level in the header, and the RF output level, set in the
"Level/EMF" dialog can be different, as explained in the following section.
5.4.1.1 RF level vs. RF output level
If you are working with a downstream instrument, e.g. an attenuator or amplifier, you
can enter the related parameter value in the level settings dialog ("Offset").
The generator includes these parameters and displays the result in the "Level" field in
the status bar, as if the downstream instrument and the generator were one unit. This
displayed level value corresponds to the value at the RF output of the downstream
instrument. However, the level provided at the RF output of the signal generator corre-
sponds to the level value set in the "Level/EMF/..." dialog.
The instrument activates the "Level Offset" icon in the status bar, when a level offset is
set.
The correlation is as follows:
"Level" (in header) = "RF output level" (Level in menu) + "Level offset" (Offset in menu)
5.4.1.2 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 Chapter 5.4.1.1, "RF level vs. RF
output level" , on page 180).
dBm, dBµV, mV and µV can be used as the level units. The four unit keys are labeled
with these units.
Note: The SCPI command sets the level of the "Level" display, i.e. an entered level off-
set is considered in the level value.
Remote command:
[:SOURce<hw>]:POWer[:LEVel][:IMMediate][:AMPLitude]
on page 526
5.4.2 RF Level Dialog
RF Level