Common Measurement Settings
R&S
®
FSW
317
User Manual 1173.9411.02 ─ 19
Trigger output
The R&S
FSW can provide output to another device either to pass on the internal trig-
ger signal, or to indicate that the R&S
FSW itself is ready to trigger.
The trigger signal can be output by the R&S
FSW automatically, or manually by the
user. If it is provided automatically, a high signal is output when the R&S
FSW has trig-
gered due to a sweep start ("Device Triggered"), or when the R&S
FSW is ready to
receive a trigger signal after a sweep start ("Trigger Armed").
Manual triggering
If the trigger output signal is initiated manually, the length and level (high/low) of the
trigger pulse is also user-definable. Note, however, that the trigger pulse level is
always opposite to the constant signal level defined by the output "Level" setting, e.g.
for "Level = High", a constant high signal is output to the connector until the "Send
Trigger" button is selected. Then, a low pulse is provided.
Providing trigger signals as output is described in detail in the R&S
FSW User Manual.
6.2.1.6
IF and Video Signal Output
The measured IF signal or displayed video signal (i.e. the filtered and detected IF sig-
nal) can be provided at the IF/VIDEO/DEMOD or IF
OUT output connector.
The
video output
is a signal of 1
V. It can be used, for example, to control demodula-
ted audio frequencies.
The
IF output
is a signal of the measured level at a specified frequency.
The
IF 2
GHz output
is a signal with a bandwidth of 2
GHz at the frequency 2
GHz.
Restrictions
Note the following restrictions for IF output:
●
IF and video output is only available in the time domain (zero span).
●
For I/Q data, only IF output is available.
●
IF output is not available if any of the following conditions apply:
–
The Digital Baseband Interface (R&S
FSW-B17) is active (for input or output)
–
MSRA operating mode is active
–
MSRT operating mode is active
–
A wideband extension is used (hardware options R&S
FSW-B160/-B320/-
B500; used automatically for bandwidths > 80 MHz; in this case use the IF
WIDE OUTPUT connector)
–
The sample rate is larger than 200 MHz (upsampling)
Data Input and Output
