R&S FSW Series User Manual

Getting Started
R&S
®
FSW
55User Manual 1173.9411.02 ─ 43
tions to the first are re-established. This can cause a short delay in data transfer after
switching the input source.
Input via the Analog Baseband Interface can be enabled in the I/Q Analyzer, the Ana-
log Demodulation application, or in one of the optional applications that process I/Q
data (where available).
5.2.1.14 TRIGGER INPUT / OUTPUT
Use the female TRIGGER INPUT connector to input an external trigger or gate data.
Thus, you can control the measurement using an external signal. The voltage levels
can range from 0.5 V to 3.5 V. The default value is 1.4 V. The typical input impedance
is 10 kΩ.
Use the female BNC TRIGGER INPUT / OUTPUT connector to receive a second
external signal or to provide a signal to another device. The signal is TTL compatible
(0 V / 5 V). You control the connector usage in the "Trigger" settings ([TRIG] key).
The trigger output also controls signals by the frequency mask trigger available in
Real-Time mode.
The rear panel provides a third TRIGGER INPUT / OUTPUT connector, see Chap-
ter 5.2.2.10, "TRIGGER 3 INPUT/ OUTPUT", on page 60. (Not models
1312.8000Kxx)
For R&S FSW85 models, the second trigger (female BNC TRIGGER INPUT / OUT-
PUT connector) on the front panel is not available due to the second RF input connec-
tor (see Chapter 5.2.1.16, "RF INPUT 50 Ohm", on page 55).
5.2.1.15 EXT MIXER Connector (Optional)
Connect external mixers to the EXT MIXER LO OUT/IF IN and IF IN female connectors
to increase the available frequency range. These connectors are optional and only
available with R&S FSW-B21.
If no external mixers are connected to the R&S FSW, cover the two front connectors
LO OUT / IF IN and IF IN with the supplied SMA caps.
5.2.1.16 RF INPUT 50 Ohm
The specific connector type depends on the instrument model:
●
R&S FSW26: APC 3.5 mm male (compatible with R&S SMA)
●
R&S FSW43: 2.92 mm male (compatible with R&S SMA)
●
R&S FSW50/67: 1.85 mm male (compatible with 2.4 mm)
●
R&S FSW85:
– Input 1: 1.00 mm RF input connector for frequencies up to 85 GHz (90 GHz
with option R&S FSW-B90G)
– Input 2: 1.85 mm RF input connector for frequencies up to 67 GHz
Instrument Tour

R&S FSW Series Specifications

General

Brand	R&S
Model	FSW Series
Category	Measuring Instruments
Language	English