Measurement Computing ADLIB WIN - Manual (Page 81)

Chapter 21 Clocking Modes 20-5
20.5 AL_GetClockStruct
Prototype C\C++
ERRNUM AL_GetClockStruct(LHLD lhld, LPCLK lpclkStruct);
Visual Basic for Windows
Function AL_GetClockStruct(ByVal lhld As Long, lpclkStruct As CLOCK) As Long
LHLD lhld handle of the LDSD
LPTRIG lpclkStruct address of the user clock structure
The AL_GetClockStruct function provides access to all LDSD clock settings.
Parameter Description
lhld Identifies the instance of the logical device subsystem.
lpclkStruct
Specifies a 32 bit far pointer to a clocking information structure. This structure
has been pre-defined in the ADLIB include file and is defined as follows:
typedef struct tagCLOCK
{
char
achClkSourceName[MAX_OPTIONS_NAME_STRING];
long lClkSourceId;
char
achClkSrcSignalName[MAX_OPTIONS_NAME_STRING];
long lClkSrcSignalId;
double
dClkRate;
long lClkRateUnits;
}CLOCK;
typedef CLOCK FAR * LPCLK;
Returns:
On success ERRNUM is set to 1 and the lpclkStruct structure is filled with the device's clocking settings,
otherwise ERRNUM contains the last error code that occurred during the call and the lpclkStruct structure
may contain invalid information.
Related Functions:
AL_SetClockSource
AL_SetClockRate
AL_GetActualClkRate
AL_MaxClkRate
Supported Logical Device Subsystems:
Pci55xx Series: ADC0, DAC0, DAC1