INPut Subsystem R&S FSL
1300.2519.12 6.150 E-11
INPut Subsystem
The INPut subsystem controls the input characteristics of the RF inputs of the instrument.
Commands of the INPut Subsystem
– INPut<1|2>:ATTenuation
– INPut<1|2>:ATTenuation:AUTO
– INPut<1|2>:GAIN:STATe (option RF Preamplifier, B22)
– INPut<1|2>:IMPedance
– INPut<1|2>:UPORt[:VALue]?
– INPut<1|2>:UPORt:STATe
INPut<1|2>:ATTenuation
This command programs the input attenuator. To protect the input mixer against damage from
overloads, the setting 0 dB can be obtained by entering numerals, not by using the DEC
command.
The attenuation can be set in 5 dB steps. If the defined reference level cannot be set for the set
RF attenuation, the reference level will be adjusted accordingly.
In the default state with Spectrum Analyzer mode, the attenuation set on the step attenuator is
coupled to the reference level of the instrument. If the attenuation is programmed directly, the
coupling to the reference level is switched off.
Parameter
<numeric_value> in dB; range specified in data sheet
Example
INP:ATT 30dB
Sets the attenuation on the attenuator to 30 dB and switches off the coupling to the reference
level.
Characteristics
*RST value: 0 dB (AUTO is set to ON)
SCPI: conform
Mode
all
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