Instrument Function
R&S
®
SMB100A
124Operating Manual 1407.0806.32 ─ 13
RF Mode
Selects the level mode for signal output.
This function allows you, to optimize the RF output signal for applications, where
improved harmonic suppression or a low Signal-to-Noise ratio is required.
Note: The modes "Low Distortion" and "Low Noise", for improving harmonic suppression
or the S/N ratio require that an attenuator is fitted.
"Normal"
The generator provides an RF output signal with high signal to noise
ratio as well as low distortion, according to the data sheet.
"LOW Noise"
This setting forces the generator to optimize the signal to noise ratio.
"LOW Distor-
tion"
The generator reduces distortion (harmonics) of the RF signal.
Remote command:
[:SOURce<hw>]:POWer:LMODe on page 343
Amplitude
Sets the RF level of the RF output connector.
The level entered and displayed here corresponds to the level at the RF output, i.e. any
offset entry is not taken into consideration.
Note: The SCPI command [:SOURce<hw>]:POWer[:LEVel][:IMMediate][:
AMPLitude] sets the level of the "Level" display, i.e. the level containing offset.
Remote command:
[:SOURce<hw>]:POWer:POWer on page 345
Limit - RF Level
Sets an upper limit for the RF output power.
You can use it to protect your DUT from damage due to high input power. If you enter an
RF level above this value, the instrument limits the output power to this specified value,
and generates a warning message.
However, the level indication in the status bar is not affected.
Note: The limit value is always effective, regardless of whether you work with "NRP-Z
Power Control" or not.
The value is not affected by an instrument preset (PRESET key), *RST and the "Save/
Recall" function. It is influenced only by the Factory Preset and the factory value is equal
to maximum level.
Remote command:
[:SOURce<hw>]:POWer:LIMit[:AMPLitude] on page 343
Offset (Level)
Sets the level offset relative to the RF level.
The level offset of a downstream instrument (e.g. an attenuator or amplifier) is entered.
RF Block
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