Rohde & Schwarz ESW Series, User Manual

Page: 148 / 759

Common Measurement Settings
R&S
®
ESW
148 User Manual 1177.6298.02 ─ 08
10.6 Data Input and Output
The R&S ESW can analyze signals from different input sources and provide various
types of output (such as video or trigger signals).
Functions to control in- and outputs described elsewhere:
●
Chapter 9.3.6, "Configuring Line Impedance Stabilization Networks (LISN)" ,
on page 135
● Configuring the Input .............................................................................................148
● Configuring the Preselector ...................................................................................149
● External Generator ................................................................................................151
● Configuring Outputs (IF / Video / Demodulation) .................................................. 163
● Configuring LISNs .................................................................................................167
● Configuring Additional Outputs ............................................................................. 167
10.6.1 Configuring the Input
Access : "Overview" > "Input" > "Input Source"
The default input source for the R&S ESW is "Radio Frequency", i.e. the signal at the
[RF Input] connector on the front panel of the R&S ESW. In the Receiver application,
this is the only available input source.
Functions in the "Input" dialog box described elsewhere:
●
"Input Selection" on page 122
Input Coupling ............................................................................................................. 148
Impedance .................................................................................................................. 149
Pulse Limiter ............................................................................................................... 149
Input Coupling
The RF input of the R&S ESW can be coupled by alternating current (AC) or direct cur-
rent (DC).
Note that the "Input Coupling" feature is only available for input 2 when the pulse lim-
iter is turned off. When the pulse limiter is on, the input is always DC coupled.
AC coupling blocks any DC voltage from the input signal. This is the default setting to
prevent damage to the instrument. Very low frequencies in the input signal may be dis-
torted.
However, some specifications require DC coupling. In this case, you must protect the
instrument from damaging DC input voltages manually. For details, refer to the data
sheet.
Data Input and Output