Remote Control Commands > SOURce Subsystem > SOURce:POWer Subsystem > [:SOURce<hw>]:POWer:ATTenuation:RFOFf:MODE
[: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 Preset.

Parameters:
<Mode>
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 Standing Wave Ratio) is required.

Furthermore, it provides fast and wear-free operation of the relay-switched high power bypass.

Furthermore, on instruments equipped with a high power option, it provides fast and wear-free operation of the relay-switched high power bypass.

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:depends on instrument hardware
Example: SOUR:POW:ATT:RFOF:MODE FATT

sets the RF OFF attenuator to maximum.

Manual operation: See "RF OFF Mode"

 


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