| Write/Read | About Noise Figure | 
| Description | Sets and returns the port identifier of the ECal noise tuner that is connected to the PNA Source. | 
| VB Syntax | noise.NoiseTunerIn = value | 
| Variable | (Type) - Description | 
| noise | A NoiseFigure (object) | 
| value | (string) Noise Tuner port identifier that is connected to the PNA source, as it is labeled on the ECal module. For example, for 2-port ECal modules, choose either "A" or "B". | 
| Return Type | String | 
| Default | Not Applicable | 
| Examples | noise.NoiseTunerIn = "A"'Write | 
| EcalPort = noise.NoiseTunerIn 'Read | |
| C++ Syntax | HRESULT get_NoiseTunerIn(BSTR* pValue) HRESULT put_NoiseTunerIn(BSTR pNewValue) | 
| Interface | INoiseFigure |