| Write/Read | About SA Application | 
| Description | Set and read the source power level. This command applies to CW or linear sweep types. | 
| VB Syntax | sa.SourcePower (source) = value | 
| Variable | (Type) - Description | 
| sa | A SpectrumAnalyzer (object) | 
| source | (String) Source name enclosed in quotes. Use SourcePortNames to read a list of available source port names. See also Remotely Specifying a Source Port. | 
| value | (Double) Source power level in dBm. Choose a value within the power range of the source. | 
| Return Type | Double | 
| Default | Default of the source. | 
| Examples | sa.SourcePower("Port 1") = -5 'Write | 
| value = sa.SourcePower("Port 1") 'Read | |
| C++ Syntax | HRESULT put_SourcePower(BSTR sourcename, double power); HRESULT get_SourcePower(BSTR sourcename, double* power); | 
| Interface | ISpectrumAnalyzer |