Attenuator - R&S SGT100A User Manual

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R&S SGT100A
7.7.6.2

Attenuator

► To access the attenuator settings, select "SGMA-GUI > Instrument Name > Level
>Attenuator".
This dialog comprises the settings for the power-on behavior of the instrument.
Mode
Sets the attenuator mode at the RF output.
"Auto"
"Fixed"
"Auto Passive"
Remote command:
:OUTPut:AMODe
SATT Switch-Over Offset
Sets the switch-over offset value of the attenuator.
User Manual 1176.8674.02 ─ 07
Standard mode.
The electronically switching attenuator switches with a ~ 6 dB step
width at optimized switching points. The entire level range is availa-
ble.
The level setting is performed by continuous electronic level control
combined with switching the step attenuator.
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.
The attenuator is switched automatically.
The level settings are made only for the passive reference circuits.
The high-level ranges are not available.
on page 327
Signal Generator Settings
RF Settings
209