Measurement-computing ADLIB WIN Manuel d'utilisateur télécharger pdf (Page 74)

Chapter 20 Triggering Modes

19-6

19.5 AL_GetTriggerStruct

Prototype C\C++

ERRNUM AL_GetTriggerStruct(LHLD lhld, LPTRIG lptrigStruct);

Visual Basic for Windows

Function AL_GetTriggerStruct(ByVal lhld As Long,

lptrigStruct As TRIGGER) As Long

LHLD lhld handle of the LDSD

LPTRIG lptrigStruct address of the user trigger structure

The AL_GetTriggerStruct function provides access to all LDSD trigger settings.

Parameter Description

lhld Identifies the instance of the logical device subsystem.

lptrigStruct Specifies a 32 bit far pointer to a trigger information structure. This structure

has been pre-defined in the ADLIB include file and is defined as follows:

typedef struct tagTRIGGER

{

char achTrigModeName[MAX_OPTIONS_NAME_STRING];

long lTrigModeId;

char achTrigSrcName[MAX_OPTIONS_NAME_STRING];

long lTrigSrcId;

char achTrigSrcSignalName[MAX_OPTIONS_NAME_STRING];

long lTrigSrcSignalId;

long lTrigRateUnits;

double dTrigRate;

long lPostSampleCount;

}TRIGGER;

typedef TRIGGER FAR * LPTRIG;

Returns:

On success ERRNUM is set to 1 and the lptrigStruct structure is filled with the device's triggering settings,

otherwise ERRNUM contains the last error code that occurred during the call and the lptrigStruct structure

may contain invalid information.

Related Functions:

AL_SetTriggerMode

AL_SetTriggerSource

AL_SetTrigSourceSignal

AL_SetPostSampleCount

AL_SetTriggerOutput

AL_GetTriggerOutput

Supported Logical Device Subsystems:

Pci55xx Series: ADC0, DAC0

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Measurement-computing ADLIB WIN Manuel d'utilisateur Page 74