R&S SMJ100A, Operating Manual

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Instrument Function
R&S
®
SMJ100A
214 Operating Manual 1403.7458.32 ─ 14
To open the "LO Coupling" dialog, select "RF/A Mod > Configure > LO Coupling" or
use the MENU key under "RF/A Mod".
The menu is available only for instruments equipped with the option R&S SMJ-B90.
This option enables phase coherent RF outputs of two or more RF paths.
The local oscillator coupling is set in the lower area of the group menu "Frequency/
Phase". The menu is used to select the mode of the LO coupling and the state of the
local oscillator output.
For more information about the upper areas, see:
●
Chapter 5.5.2.3, "RF Frequency Dialog" , on page 202
●
Chapter 5.5.3.1, "Phase Settings" , on page 204
●
Chapter 5.5.4.1, "Reference Oscillator Settings" , on page 211
Mode - LO Coupling
Selects the mode of the local oscillator coupling.
"Internal" This mode corresponds to a normal operation.
The internal local oscillator is used.
"External" An external signal is used.
Note: Selection of LO Coupling "External" mode, disables all parame-
ters in the "Frequency/Phase/Ref Osc" menu.
Remote command:
[:SOURce<hw>]:FREQuency:LOSCillator:MODE
on page 714
Out State - LO Coupling
Switches on/off the LO output.
"On" The internal local oscillator signal is also available on the LO OUT
connector (in order to couple two instruments).
"Off" The LO OUT signal is switched off.
Remote command:
[:SOURce<hw>]:FREQuency:LOSCillator:OUTPut:STATe
on page 714
RF Signal and Analog Modulations - RF Block