Signal Generator Settings
R&S
®
SGS100A
91User Manual 1173.9105.02 ─ 12
"Fixed"
The level settings are made without switching the attenuator.
When this operating mode is switched on, the attenuator is fixed in
the current position to provide level settings without interruption. The
resulting variation range is defined and displayed with the parameters
Level Range.
Note: The function is effective when automatic level control is activa-
ted ("ALC State = On").
If the normal variation range is overranged or underranged, level
errors increase considerably. The warning "Level under/overrange"
appears in the info line.
The spectral purity of the output signal decreases with high attenua-
tion.
"Auto Passive"
The attenuator is switched automatically.
The level settings are made only for the passive reference circuits.
The high-level ranges are not available.
Remote command:
:OUTPut:AMODe on page 222
SATT Switch-Over Offset
Sets the switch-over offset value of the attenuator.
Remote command:
[:SOURce]:POWer:ATTenuation:SOVer[:OFFSet] on page 250
Level Range
Displays the level range in which the level is set without interruption for the "Attenuator
Mode Fixed" setting.
Remote command:
:OUTPut:AFIXed:RANGe:LOWer? on page 222
:OUTPut:AFIXed:RANGe:UPPer? on page 222
RF-Off-Mode
Determines the attenuator's state after the instrument is switched off.
In default setting, the electronic step attenuator switches to highest attenuation when
RF is off. By setting the RF-Off mode, the electronic step attenuator can be fixed to
keep the output impedance constant during RF off.
Remote command:
[:SOURce]:POWer:ATTenuation:RFOFf:MODE on page 250
Level and Power-On Settings
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