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ALPHABETIC INTERFACE REFERENCE 4 ALPHABETIC INTERFACE REFERENCE All of the interface declarations in this section are for the Dual Interfaces and the Interface Description Language is used. Although the return value of all of the functions is technically a standard COM return value (HRESULT), the return values in the method and property descriptions are those specified as [out, retval] (output, returned value). The exact syntax for calling methods and properties will differ between client applications and is covered in the Sample Code section. 4.1 AnalogChannel Base IDispatch interface: Include file: ServerPI.h Typelib file: PECS.tlb Availability: PECS 1.0, Workstation 4.5 with SDK 2.0 Description: Represents the stream of data from a single analog channel. This interface is rarely implemented by plug-ins but, instead, plug-ins typically obtain a pointer to an analog channel object through other means such as from a trial object (see ITrial interface). AnalogToVideoRatio Methods: 1. 2. BaseRateDivider 3. FirstSampleNum 4. GetSample 5. GetSamples 6. LastSampleNum 7. SampleRate 8. SetSample 9. SetSamples 10. Units 11. MatchesLabel 12. Label Properties: 4.1.1 NAVIGATION AnalogTo VideoRatio Declaration: HRESULT AnalogToVideoRatio([out, retval]Ratio** retval) PUBLICATION PECS USER GUIDE – V1.0 (Revision 008) 28