Configuration
R&S
®
FSW-K7
98
User Manual 1173.9240.02 ─ 17
RF Power ← Trigger Source
Defines triggering of the measurement via signals which are outside the displayed
measurement range.
For this purpose the instrument uses a level detector at the first intermediate fre-
quency. The input signal must be in the frequency range between 500
MHz and
8
GHz.
The resulting trigger level at the RF input depends on the RF attenuation and preampli-
fication. For details on available trigger levels see the data sheet.
Note:
If the input signal contains frequencies outside of this range (e.g. for fullspan
measurements), the sweep may be aborted and a message indicating the allowed
input frequencies is displayed in the status bar.
A "Trigger Offset", "Trigger Polarity" and "Trigger Holdoff" (to improve the trigger stabil-
ity) can be defined for the RF trigger, but no "Hysteresis".
This trigger source is not available for input from the Digital Baseband Interface
(R&S
FSW-B17) or the Analog Baseband Interface (R&S
FSW-B71). If the trigger
source "RF Power" is selected and digital I/Q or analog baseband input is activated,
the trigger source is automatically switched to "Free Run".
Remote command:
TRIG:SOUR RFP
, see
Power Sensor ← Trigger Source
Uses an external power sensor as a trigger source. This option is only available if a
power sensor is connected and configured.
Note:
For R&S power sensors, the "Gate Mode"
Lvl
is not supported. The signal sent
by these sensors merely reflects the instant the level is first exceeded, rather than a
time period. However, only time periods can be used for gating in level mode. Thus,
the trigger impulse from the sensors is not long enough for a fully gated measurement;
the measurement cannot be completed.
Remote command:
TRIG:SOUR PSE
, see
Trigger Level
Defines the trigger level for the specified trigger source.
For details on supported trigger levels, see the data sheet.
Remote command:
For analog baseband (B71) or digital baseband (B17) input only:
Trigger Configuration
