Rohde & Schwarz FSW13, User Manual

Page: 429 / 1150

Common Measurement Settings
R&S
®
FSW
429 User Manual 1173.9411.02 ─ 19
Video mode is only available in the time domain, and not for I/Q-based data.
Remote command:
TRIG:SOUR VID
, see
TRIGger[:
​
SEQuence]:
​
SOURce
​
on page 854
SWE:EGAT:SOUR VID
for gated triggering, see
[SENSe:
​
]SWEep:
​
EGATe:
​
SOURce
​
on page 857
IF Power ← Trigger Source ← Trigger Settings
The R&S FSW starts capturing data as soon as the trigger level is exceeded around
the third intermediate frequency.
This trigger source is only available for RF input.
For frequency sweeps, the third IF represents the start frequency. The trigger band-
width at the third IF depends on the RBW and sweep type.
For measurements on a fixed frequency (e.g. zero span or I/Q measurements), the
third IF represents the center frequency.
The available trigger levels depend on the RF attenuation and preamplification. A refer-
ence level offset, if defined, is also considered.
For details on available trigger levels and trigger bandwidths see the data sheet.
Note: Be aware that in auto sweep type mode, due to a possible change in sweep
types, the trigger bandwidth may vary considerably for the same RBW setting.
Remote command:
TRIG:SOUR IFP
, see
TRIGger[:
​
SEQuence]:
​
SOURce
​
on page 854
SWE:EGAT:SOUR IFP
for gated triggering, see
[SENSe:
​
]SWEep:
​
EGATe:
​
SOURce
​
on page 857
Baseband Power ← Trigger Source ← Trigger Settings
Defines triggering on the baseband power (for baseband input via the Digital Baseband
Interface R&S
FSW-B17 or the Analog Baseband interface R&S FSW-B71)).
Remote command:
TRIG:SOUR BBP
, see
TRIGger[:
​
SEQuence]:
​
SOURce
​
on page 854
RF Power ← Trigger Source ← Trigger Settings
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.
Trigger and Gate Configuration