Measurement-computing ADLIB WIN Manuel d'utilisateur télécharger pdf (Page 78)

Chapter 21 Clocking Modes

20-2

20.2 AL_SetClockRate

Prototype C\C++

ERRNUM AL_SetClockRate(LHLD lhld, double dRate, long lUnits);

Visual Basic for Windows

Function AL_SetClockRate(ByVal lhld As Long, ByVal dRate As Double,

ByVal lUnits As Long) As Long

LHLD lhld handle of the LDSD

double dRate specifies the rate of the clock

long lUnits specifies the rate units

The AL_SetClockRate function sets the hardware clocking rate of the LDSD.

Parameter Description

lhld Identifies the instance of the logical device subsystem.

dRate Specifies the rate at which a clocking will occur.

lUnits Sets the units in which the above rate parameter is specified. The available

settings are defined as AL_HERTZ.

Returns:

On success ERRNUM is set to 1, otherwise ERRNUM contains the last error code that occurred during the

call.

Related Functions:

AL_SetClockSource

AL_GetActualClkRate

AL_MaxClkRate

AL_GetClockStruct

Supported Logical Device Subsystems:

Pci5500, 5501, 5502: ADC0, Options: 0.23283e-3 to 100000

Pci5500, 5501, 5502: DAC0, DAC1, Options: 0.23283e -3 to 200000

Pci5503, 5504: ADC0, Options: 0.23283e -3 to 200000

Pci5503, 5504, DAC0, DAC1, Options: 0.23283e -3 to 200000

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Measurement-computing ADLIB WIN Manuel d'utilisateur Page 78