| Write / Read | About Frequency Settings | 
| Description | Sets and reads how the center frequency step size is determined. When TRUE, center steps by 5% of span. When FALSE, center steps by STEP:SIZE value. | 
| VB Syntax | chan.CenterFrequencyStepSizeMode = value | 
| Variable | (Type) - Description | 
| chan | (object) - A Channel object | 
| value | (Enum as NAModes) Choose from: 0 - naAUTO -Step size is set automatically. 1 - naMaunal - Step size is set manually using CenterFrequencyStepSize Property. | 
| Return Type | Enum | 
| Default | 1 - naMaunal | 
| Examples | chan.CenterFrequencyStepSizeMode = naAUTO 'Write value = chan.CenterFrequencyStepSizeMode 'Read | 
| C++ Syntax | HRESULT get_CenterFrequencyStepSizeMode(tagNAModes* pVal); HRESULT put_CenterFrequencyStepSizeMode(tagNAModes pVal); | 
| Interface | IChannel25 |