Rohde & Schwarz SMW200A - Signal Generation and Triggering in the Sweep and List Modes

Configuring the Signal in the RF Domain
R&S
®
SMW200A
459User Manual 1175.6632.02 ─ 16
This mode is especially useful in high-speed measurements with fast changing fre-
quency and level settings.
Interactions and characteristics
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Activating the list mode automatically deactivates all RF and LF sweeps and vice
versa.
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In list processing mode, the frequency and level display in the status bar is dis-
abled.
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The sweep modes only work with a global dwell time, that means the time intervals
are constant during signal generation.
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If you want to hold a running sweep at a specific frequency or level value, enter the
value in the status bar. The sweep stops immediately.
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We recommend that you switch off the display update for optimum sweep perform-
ance, especially with short dwell times
See Chapter 11.1.3, "Display Update Settings", on page 659.
I/Q modulation and list mode in path B depends on frequency options
If the instrument is equipped with one of the frequency options R&S SMW-B212 /-B220
(path B), and you are generating an I/Q modulated signal, the list processing mode in
path B is blocked.
7.6.1 Signal Generation and Triggering in the Sweep and List Modes
In both operating modes "List" and "Sweep", triggering and signal generation follow the
same principle. The instrument generates the signal continuously (that means trig-
gered automatically) or in individual steps (controlled manually by an internal or exter-
nal trigger signal).
The instrument expects the trigger signal at the INST TRIG X connector.
The figures in this section give an overview on the signal generation in the sweep and
list modes and the appropriate triggering. The figures show the signal state after acti-
vating the mode and the generation of the signal when a trigger event occurs. The rele-
vant parameters and settings are briefly explained to each mode.
Each "Sweep" and "List" mode dialogs provides also a "Reset" function that sets the
signal to the initial situation (that is, the start value or the list begin). Depending on the
selected trigger mode, the signal generation proceeds accordingly.
Varying the RF Signal in List or Sweep Mode