Configuring the RF Signal
R&S
®
SMW200A
489User Manual 1175.6632.02 ─ 30
a) Select "RF > LO Coupling > Mode > Internal".
b) Set "Out State > On".
3. Configure Signal Generator 2.
a) Set "Freq => 5 GHz".
b) Check if both paths are able to deal with the desired RF frequency.
● If both paths can handle the RF frequency, select "RF > LO Coupling >
Mode > A External & A->B Coupled"
● If path A is not sufficiently equipped, select "RF > LO Coupling > Mode >
A RF Off & B External"
● If path B is not able to handle the frequency, select "RF > LO Coupling >
Mode > A External & B RF Off"
c) Set "Out State > On".
d) If the attenuation between the interconnection LO OUT and LO IN is more than
1 dB at the oscillator frequency, we recommend that you execute "Adjust LO
Level Current Frequency".
Note: Complete the adjustment procedure before you perform the adjustment
on a subsequent instrument.
The signal generator automatically adjusts the internal LO signal level at the
I/Q modulator and LO OUT connector.
4. Configure Signal Generator 3.
a) Set "Freq = 5 GHz".
b) Select "RF > LO Coupling > Mode > External".
c) Set "Out State > Off".
d) If the attenuation between the interconnection LO OUT and LO IN is greater
than 1 dB at the oscillator frequency, we recommend that you perform level
adjustment:
● Check if the "Adjust LO Level Current Frequency" procedure of the previ-
ous instrument is completed.
● Execute "Adjust LO Level Current Frequency".
The signal generator automatically adjusts the internal LO signal level at the
I/Q modulator and LO OUT connector.
All instruments generate the RF signals in phase, as they use the same oscillator
signal looped through all instruments.
Local Oscillator Coupling
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