R&S SMB100A Operating Manual page 393

®
R&S SMB100A
Parameters:
<State>
Example:
Manual operation:
[:SOURce<hw>]:POWer:ATTenuation:RFOFf:MODE <Mode>
Selects the attenuator mode, when the RF signal is switched off.
The setting of the RF OFF mode is not affected by an instrument preset (PRESET
key), *RST and the "Save/Recall" function. This parameter is influenced only by the
Factory
Parameters:
<Mode>
Example:
Manual operation:
[:SOURce<hw>]:POWer:EMF:STATe <State>
Displays the signal level as voltage of the EMF. The displayed value represents the
voltage over a 50 Ohm load.
Operating Manual 1407.0806.32 ─ 21
ON | OFF | AUTO
ON
Internal level control is permanently activated.
OFF
Internal level control is deactivated; Sample & Hold mode is acti-
vated.
AUTO
Internal level control is activated/deactivated automatically
depending on the operating state.
*RST:
POW:ALC ON
activates automatic level control for RF output A.
See "State - ALC"
Preset.
UNCHanged | FATTenuation
UNCHanged
Freezes the setting of the attenuator when RF is switched off.
The attenuator is only activated when RF is switched on.
This setting recommended if a constant VSWR (Voltage Stand-
ing Wave Ratio) is required.
Furthermore, on instruments equipped with a mechanical attenu-
ator, it provides fast and wear-free operation.
FATTenuation
Sets attenuation to maximum when the RF signal is switched off.
This setting is recommended for applications that require a high
level of noise suppression.
*RST:
SOUR:POW:ATT:RFOF:MODE FATT
sets the RF OFF attenuator to maximum.
See "RF OFF Mode"
Remote Control Commands
AUTO
on page 153
depends on instrument hardware
on page 150
SOURce Subsystem
378