Rohde & Schwarz SMM100A, Руководство пользователя

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Configuring the RF signal
R&S
®
SMM100A
297 User Manual 1179.1341.02 ─ 05
ers, amplifiers or attenuators and of their corresponding major parameters offset, multi-
plier, amplitude. The R&S
SMM100A generates the signal without the downstream
parameters, but considers all additional parameters concerning the frequency and
level.
Example parameters that affect the frequency and level:
●
Frequency offset
●
Multiplication factor
●
User correction
●
Digital attenuation
Any of these cases are indicated by a dedicated icon in the status bar, depending on
the affected parameter.
Figure 7-1 illustrates the calculation of the "Frequency" and "Level" values, displayed
in the status bar.
Figure 7-1: Frequency and Level display vs frequency and level at the RF output
f
RF
, Level
RF
= Frequency and level ("Status bar > Frequency and Level") at the output of the downstream
instrument, see also Calculation of f
RF
and Level
RF
)
f
RF Out
, Level
RF
Out
= Frequency and level at the output connector [RF] ("RF > RF Frequency > Frequency" and
"RF > RF Level > Amplitude")
n*f = Multiplication factor ("RF > RF Frequency > Multiplier")
Δ
f = Frequency offset ("RF > RF Frequency > Offset")
Δ
Level = Power offset ("RF > RF Level > Offset")
Calculation of f
RF
and Level
RF
●
f
RF
=
n*f
RF Out
+
Δ
f
●
Level
RF
=
Level
RF Out
+
Δ
Level + Level
DigAtt
(Level
DigAtt
for active internal I/Q modulation, "RF > RF Level > Digital Attenuation")
7.5 RF frequency settings
Access:
► Select "RF" > "RF Frequency" > "Frequency".
RF frequency settings