Instrument Function
R&S
®
SMU200A
198Operating Manual 1007.9845.32 ─ 15
The phase of the output signal can be changed in the "Phase Settings" section. The
"Phase Settings" menu is described in chapter 5.5.3, "Phase Settings", on page 199.
The part concern the settings of the reference oscillator and are described in chap-
ter 5.5.4, "Reference Oscillator", on page 204.
The lower parts concern the settings of the local oscillator (LO) and are described in
chapter 5.5.5, "Local Oscillator - LO Coupling", on page 206.
Frequency Settings
The frequency and offset are set in the top section of the menu.
Frequency - RF Signal
Sets the RF frequencyof the RF output connector. The frequency entered and displayed
here corresponds to the frequency at the RF output, i.e. any offset entry is not taken into
consideration.
Note: The SCPI command SOUR:FREQ sets the frequency of the "FREQ" display, i.e.
the frequency containing offset.
SCPI command:
n.a.
Frequency Offset - RF Signal
Sets the frequency offset relative to the RF frequency. The frequency offset of a down-
stream instrument (e.g. a mixer) is entered.
The entry does not change the value of the RF frequency at the RF output. It only changes
the RF frequency displayed in the display header. The value of the RF frequency in the
header corresponds to the frequency.
SCPI command:
[:SOURce<hw>]:FREQuency:OFFSet on page 715
Phase Continuous Frequency Settings
A phase continuous mode can be enabled in the "Phase Continuous Frequency Set-
tings" section (see chapter 5.5.3.2, "Phase Continuous Frequency Setting",
on page 200).
User Variation
If the frequency is set using the rotary knob, the step width is defined in the "User Var-
iation" section.
RF Signal and Analog Modulations - RF Block
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