Analog Modulations
R&S
®
SMA100B
99User Manual 1178.3834.02 ─ 05
The internal LF signal can the modulation signal source for any of the analog mod-
ulations. The LF signal applies to all modulations which use the internal modulation
signal. Therefore, any modification of the LF signal immediately affects all currently
active modulations.
Settings
State (LF frequency sweep)..........................................................................................99
Shape............................................................................................................................99
Frequency................................................................................................................... 100
Period..........................................................................................................................101
Pulse Width.................................................................................................................101
Pulse Duty Cycle.........................................................................................................101
Triangle Rise............................................................................................................... 101
Trapezoid Rise / Fall................................................................................................... 101
Trapezoid High............................................................................................................101
State (LF frequency sweep)
Status of the LF frequency sweep signal.
You find this parameter in two dialogs:
●
"LF Frequency Sweep" turns on/off the signal generation.
See Sweep Mode Settings for access.
●
"Analog Modulation Sources" displays the current state (read-only). If it is turned
on, this dialog provides the varying sweep frequency, see Current Frequency.
Note: Active sweep mode deactivates other sweeps or lists and vice versa.
Remote command:
[:SOURce<hw>]:LFOutput:FREQuency:MODE on page 603
Shape
Selects the waveform shape of the LF signal.
The "Triangle" and "Trapezoid" waveforms require option R&S SMAB-K24.
"Sine"
1 = Period
Modulation Settings