Instrument Function
R&S
®
SMU200A
440Operating Manual 1007.9845.32 ─ 15
Opens the main settings dialog of the R&S EX-IQ-Box.
I/Q-Swap
Activates swapping of the I and Q signal components, which mirrors the spectrum at the
f=0 line and inverts the sign of the frequency.
The I/Q swap may be needed if an external CDMA signal is to be added to an internally
generated baseband signal (see description "Digital Standard CDMA2000").
SCPI command:
[:SOURce]:BBIN:IQSWap[:STATe] on page 692
Sample Rate
For digital input signals the section "Sample Rate" is available in the "Baseband Input
Settings" dialog. The sample rate of the external digital baseband signal can be set and
the state of signal transmission is indicated by the FIFO Status.
Sample Rate Source
Digital Input only
Selects the source for estimating the sample rate or defining it by the user.
Note: With a connected "R&S EX-IQ-Box" either the internal clock source (User defined)
or an external clock (Digital I/Q In) can be selected in the settings dialog of the R&S EX-
IQ-Box. Therefore, the sample rate source is only indicated in this field.
"User Defined"
Enables the user to define the sample rate in the entry field value.
"Digital I/Q In"
Estimates the sample rate on the digital I/Q input and displays the value
in the value field.
SCPI command:
[:SOURce<hw>]:BBIN:SRATe:SOURce on page 697
Sample Rate Value
Digital Input only
Sets the sample rate of the external digital baseband input signal.
Note: The maximum value is 90 MHz with BBinR Revision 02.xx and 100 MHz with BBinR
Revision 03.00 or higher.
SCPI command:
[:SOURce]:BBIN:SRATe:ACTual on page 696
FIFO Status
Digital Input only
Indicates the state of the signal transmission.
"OK"
Resampling is working properly.
External Baseband Signal - Baseband Input
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