Measurement-computing ADLIB WIN Bedienungsanleitung PDF herunterladen (Seite 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

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Measurement-computing ADLIB WIN Bedienungsanleitung Seite 81