Remote Control Commands
R&S
®
SMB100A
341Operating Manual 1407.0806.32 ─ 13
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, 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:
FATTenuation
Example:
SOUR:POW:ATT:RFOF:MODE FATT
sets the RF OFF attenuator to maximum.
Manual operation: See "RF OFF Mode" on page 126
[:SOURce<hw>]:POWer[:LEVel][:IMMediate][:AMPLitude] <Amplitude>
The command sets the RF output level in CW mode. In addition to numerical values, it
is also possible to specify UP and DOWN. The level is then increased or decreased by the
value specified under [SOURce<hw>:]POWer:STEP.
As with the Level value entered in the header, the OFFSet value is also taken into con-
sideration with this command.
The specified value range is therefore only effective if :SOURce:POWer:OFFSet is set
to 0. The value range for other OFFSet values can be calculated using the following
formula:
Minimum level + OFFSet ... Maximum level + OFFSet
The keywords of this command are largely optional. Therefore, both the long and short
form of the command are shown in the example.
Parameters:
<Amplitude> Minimum level ... Maximum level
The value range for the level setting varies according to the instru-
ment model.
The values are given in the data sheet.
Increment: 0.01 dB
*RST: -30 dBm
Default unit: dBm
Example:
SOUR:POW:LEV:IMM:AMPL 15
or
:POW 15
sets the RF level at output A to 15 dBm.
SOURce Subsystem
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