Common Measurement Settings
R&S
®
FSW
317User 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
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