Chapter 16 SCPI Command Reference
Input commands
298 9102 Handheld Spectrum Analyzer Software version 5.31
Input commands
With these commands, the input stage of the 9102 Handheld Spectrum
Analyzer is affected.
:INPut:ATTenuation
:INPut:ATTenuation:AUTo
:INPut:IMPedance
WARNING
The maximum input power level at the RF
IN connector is 30 dBm
(1 W). Higher input levels may result in serious damage of the instru-
ment.
Syntax
:INPut:ATTenuation <real1>
Parameters
real1 is a floating point real number.
The minimum value for real1 is 0, the maximum value 50. real1 can be
set in steps of 10. The default value for real1 is 30.
Command
This command sets the RF preattenuation of the Aeroflex 9102. The physi-
cal dimension of real1 is dB.
Query
Reads and returns the current setting.
Example
:INP:ATT 20
:INPut:ATTenuation?
The value returned is in this example: "20".
Syntax
:INPut:ATTenuation:AUTo <PredefExpr>
Parameters
PredefExpr is one of the following predefined expressions: ON|OFF.
Default is ON.
Command
Lets the 9102 select the preattenuation depending on the reference level.
Query
Reads and returns the current setting.
Example
:INP:ATT:AUTO ON
:INPut:ATTenuation:AUTO?
Returns the following string: "ON"
Syntax
:INPut:IMPedance <PredefExpr>
Parameters
PredefExpr is one of the following predefined expressions:
IMP50|IMP75.
Default is IMP50.
Command
Lets the 9102 select between 50 and 75 impedance.
Query
Reads and returns the current setting.
Example
:INP:IMP IMP75
:INPut:IMPedance?
Returns the following string: "IMP75"
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