Opt.003 COM Interface

Opt.003 features can be programmed using the COM interface. This interface, IResonantCavity, is described in the type library  MaterialsMeas.dll. The interface has the methods listed below.

• HRESULT Init();

Init() must be called before any of the other methods can be used. It opens a copy of the Option 003. It returns S_OK if successful and S_FALSE if not.

• HRESULT ShowDialog();
• HRESULT Show();

These two methods are the same. They display the main dialog box that can be used to make manual measurements.

• HRESULT MeasureFandQ(double *freq, double *Q);

This method triggers a measurement of the resonant frequency and Q based on the current range.

• HRESULT Zoom();

This method zooms the measurement range to 5 Q bandwiths (5*Fs/Q) and sets the center frequency to approximately the resonant frequency (Fs).

• HRESULT SetRange (double startFreq, double stopFreq,float power,float ifbw, long num, long average);

This method sets the search range for the resonance. The unit of startFreq and stopFreq is Hz.

• HRESULT CalculateASTM (double cavityVolume, double cavityFreq, double cavityQ, double sampleVolume, double sampleFreq, double sampleQ, double *er, double *ei);

This method calculates the dielectric constant and loss factor using the ASTM 2520 method.

The unit of frequency is Hz.

• HRESULT CalculateSPDR (double thickness, double cavityFreq, double cavityQ, double sampleFreq, double sampleQ, BSTR exePath, double *er, double *ei);

This method calculates the dielectric constant and loss factor using the split-post dielectic resonator method.

The unit of frequency is Hz.

• HRESULT SetASTMCavityType(int type);

This method set the cavity type in ASTM method.

Type: 0 is round, 1 is rectangle.