Instrument Function
R&S
®
SMB100A
196
Operating Manual 1407.0806.32 ─ 21
Remote command:
n.a.
Select column to fill
Selects either the frequency or the level column to be filled with the value defined
below.
Remote command:
n.a.
Start value
Sets the start value for the frequency or the level entries.
Remote command:
n.a.
End value
Sets the end value for the frequency or the level entries.
Remote command:
n.a.
Increment value
Sets the increment for the frequency or the level entries.
Remote command:
n.a.
Fill
Fills the selected column in the set range with values, starting with the start value and
using the set increment.
Remote command:
n.a.
5.4 Modulation
5.4.1 Overview of Modulation
Analog modulation is a method used to transmit information of an LF (Low Frequency)
signal in accordance with a second signal, typically one of a higher frequency. This is
done by varying one or more properties of a high frequency waveform, called the mod-
ulation or carrier signal, with the modulating signal that contains the information to be
transmitted.
The three key parameters of the modulation signal are the amplitude, phase and fre-
quency. These parameters are modified in accordance with the low frequency signal to
obtain the modulated RF signal.
Modulation
