Instrument Function
R&S
®
SMU200A
437Operating Manual 1007.9845.32 ─ 15
Fig. 5-34: External Baseband Signals
For sample rates in the range of 400 Hz ... <100 MHz, the external clock must be provided,
it is required to reconstruct the signal (Baseband In Mode "Digital Input" (Sample Rate
Source "Digital I/Q In")).
For sample rates of exactly 100 MHz the digital signal is directly fed into the digital signal
path (Baseband In Mode "Digital Input" (Sample Rate Source "User Defined")).
The signal source (typically a second R&S Instrument) and the receiving R&S Instrument
have to be synchronized.
Analog Wideband I/Q In and Baseband Input are not possible simultaneously and there-
fore switch each other off.In addition to the I/Q impairments in the Impairments block, it
is also possible to set analog I/Q impairments in the I/Q Modulator menu of the R&S
Signal Generator.
5.9.1 BB Input Block
The settings for signal routing, frequency offset and path gain are available in the "BB
Input" function block of each path or in the "BB Input" menus which are opened using the
MENU key.
If an R&S EX-IQ-Box is connected, the R&S instrument recognizes this module auto-
matically and indicates a labeled symbol of the R&S EX-IQ-Box at the corresponding
function block. A button for configuring the settings of the R&S EX-IQ-Box is displayed
in the Baseband Input Settings dialog (see "R&S EX-IQ-Box Manual"). Additionally, the
External Baseband Signal - Baseband Input
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