R&S SMA100B, Руководство пользователя

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RF Signal Configuration
R&S
®
SMA100B
64 User Manual 1178.3834.02 ─ 03
● "Level panel > Level"
● "Frequency panel > Frequency > Phase"
● On the front panel, press the FREQ or the LEVEL key.
Current frequency and level values are indicated on the "Status bar" so that you can
see them at a glance. Values displayed in the status bar and in the "Frequency/Level"
dialogs can deviate form each other.
See "RF frequency and level display with a downstream instrument" on page 64.
RF frequency and level display with a downstream instrument
If your test setup includes a downstream instrument, you can enter the parameter of
the downstream instrument in the frequency or level settings dialog of the
R&S
SMA100B. Examples of downstream instruments are mixers, frequency multipli-
ers, amplifiers or attenuators and of their corresponding major parameters offset, multi-
plier, amplitude.
The R&S SMA100B generates the signal without the downstream parameters, but con-
siders all additional parameters concerning the frequency and level, like frequency off-
set and multiplication factor, or user correction. Any of these cases is indicated by a
dedicated icon, displayed in the "Frequency" or "Level" tile, depending on the affected
parameter.
Figure 3-1 illustrates the calculation of the "Frequency" and "Level" values displayed in
the status bar.
Figure 3-1: Frequency and Level display vs frequency and level at the RF output
f
RF
= n*f
RF Out
+
Δ
f
Level
RF
= Level
RF Out
+
Δ
Level
f
RF
, Level
RF
= Frequency and level at the output of the downstream instrument ("Status bar > Fre-
quency and Level")
f
RF Out
, Level
RF Out
= Frequency and level at the output connector RF ("Frequency > RF Frequency > Fre-
quency" and "Level > RF Level > Amplitude")
n*f = Multiplication factor ("Frequency > RF Frequency > Multiplier")
Δ
f = Frequency offset ("Frequency > RF Frequency > Offset")
Δ
Level = Power offset ("Level > RF Level > Offset")
How to Set the Frequency and Level