JDS Uniphase SWS15100 - Getitusize; Getitu

152 – Programming Guide
Return Value When there is no error, the function returns zero.
When there is an error, the return value contains the error number.
getITUSize
Description The function getITUSize returns the number of ITU channels between
specified wavelengths or frequencies.
C prototype int getITUSize( double dITUSpaceInGHz, double dStartWave, double
dStopWave, unsigned short uhITUunits );
VB prototype Declare Function getITUSize Lib "SWS15100" (ByVal dITUSpaceINGHz As
Double, ByVal dStartWave As Double, Byval dStopWave As Double, ByVal
uhITUunits%) As Long
Input double dITUSpaceInGHz:
Specifies the spacing of ITU channels. This must be in GHz.
double dStartWave:
Specifies the start wavelength or frequency.
double dStopWave:
Specifies the stop wavelength or frequency.
unsigned short uhITUunits:
This integer specifies the units for the stop and start wavelength or frequency.
The allowed values are UNITS_NM and UNITS_GHZ, specified in the file
swsConst.h.
Output None
Return Value When there is no error, the function returns the number of ITU channels.
When there is an error, the return value contains the error number.
getITU
Description The getITU function returns the current ITU grid in a specified wavelength or
frequency range.
C prototype int getITU( double dITUSpaceInGHz, double dStartWave, double dStopWave,
unsigned short uhITUunits, double *pdITUGrid);
VB prototype Declare Function getITU Lib "SWS15100" (ByVal dITUSpaceInGHz As Double,
ByVal dStartWave As Double, Byval dStopWave As Double, ByVal
uhITUunits%, ByRef pdITUGrid As Double) As Long
Input unsigned short dITUSpaceInGHz:
This is the spacing of ITU channels in GHz; for example, 50 or 100 GHz.
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