Configuring the RF Signal
R&S
®
SMBV100B
307User Manual 1178.4460.02 ─ 03
6.9.3 LO Coupling Settings
Access:
► Select "RF" > "LO Coupling ...".
The "Local Oscillator (LO) Coupling" settings enable you to define the coupling of
the local oscillator signal in the RF signal paths.
The related remote commands are described in Chapter 12.16.6, "SOURce:FRE-
Quency Subsystem", on page 820.
Mode
Selects the coupling mode of the LO signals.
See a typical test setup in Chapter 6.9.4, "How to Configure Cascaded Instruments",
on page 308.
Note: Working with an external oscillator signal disables all setting parameters of the
"RF Frequency / Phase / Ext. Reference" dialog.
In external mode with active Out State , the LO coupling mode is defined within an RF
frequency range of 80 MHz to 6 GHz. If you the set the RF frequency below 80 MHz,
the R&S SMBV100B adjusts the frequency to the minimum value and displays a corre-
sponding message.
"Internal"
Uses the internal signal.
"External"
Uses an externally supplied signal.
Remote command:
[:SOURce<hw>]:FREQuency:LOSCillator:MODE on page 823.
Out State
Activates or deactivates the LO output.
"On"
Switches the LO output signal on.
For coupling two instruments, the internal local oscillator signal is also
available at the LO Out connector.
"Off"
Switches the LO output signal off.
Remote command:
[:SOURce<hw>]:FREQuency:LOSCillator:OUTPut:STATe on page 823
Local Oscillator Coupling
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