Rohde & Schwarz CMU-K20, Operating Manual

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CMU-K20/21/22/23/24 Common: Partial Reset
1115.6088.12 6.33 E-12
Partial Reset
The
RESet
subsystem restores the (factory) default values for the current function group and test
mode. It is similar to the Reset menu opened via the RESET key on the front panel.
SYSTem:RESet:CURRent Partial Reset
Command description FW vers.
This command sets all parameters of the current function group and test mode to default values.
The command is available in all function groups. In contrast to the
Reset menu the command
restores the default values defined for remote control operation. In cases where remote and manual
control use distinct settings (e.g. the repetition mode for many measurements), the manual control
settings are left unchanged.
V3.10
I/Q-IF Interface
The subsystem IQIF configures the signal paths for I/Q and IF signals provided by option CMU-B17, I/Q
and IF Interfaces . It corresponds to the I/Q-IF tab of the Connection Control menu.
Hint: How to make sense out of parameter names
In all path configurations except bypass, both the I/Q and IF output are connected (to ei-
ther the RF Unit, the Digital Unit or one of the I/Q-IF inputs). The paths differ in the connec-
tion of the input branches: The qualifier IO denotes a connected input (with connected out-
put), XO denotes a disconnected input (with connected output). Many parameters of the
IQIF commands are composed of two IO/XO qualifiers, the first one standing for the IF sig-
nal, the second for the I/Q signal.
Example: The parameter IOXO denotes a connected IF input and a disconnected IF output, while
both output branches are connected.
For more information see Chapter 4 and the application examples in the CMU200/300 operating
manual.
CONFigure:IQIF:RXTXcombined <Scenario> I/Q-IF
<Scenario> Description of parameters Def. value Def. unit FW vers.
BYP
BYIQ
XOIO
IOIO
IOXO
FPAT
UDEF RX/TX Bypass,
RXPath = BYP, TXPath = BYP
Bypass w. I/Q-OF OUT,
RXPath = TXPath =BYIQ
I/Q IN/OUT,
RXPath = TXPath = XOIO
IF IN_I/Q IN/OUT,
RXPath = TXPath = IOIO
IF IN/OUT,
RXPath = TXPath = IOXO
Fading Path,
RXPath = BYP, TXPath = XOIO
User-defined scenario, can not be set but may be returned by
the query
CONF:IQIF:RXTX?
BYP – V3.10
Description of command
This command selects the I/Q-IF test scenario, overwriting the current RX and TX path settings (see commands
CONFigure:IQIF:RXPath
and
CONFigure:IQIF:TXPath
below). Six different predefined test scenarios with
fixed RX and TX path are provided. Additional scenarios may be defined by selecting any other combination of
RX and RX paths.
Note:
UDEF
is not provided as a setting parameter. If the RX/TX path combination defined via
CONFigure:IQIF:RXPath
and
CONFigure:IQIF:TXPath
doesn't correspond to any
of the predefined scenarios, then a user-defined scenario is set implicitly, i.e. the query
CONF:IQIF:RXTX?
returns the value
UDEF.
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