Measurement-computing ADLIB WIN Bedienungsanleitung PDF herunterladen (Seite 63)

Chapter 18 Analog Output

17-1

17. ANALOG OUTPUT

The Analog Output function immediately sets the specified DtoA channel to specified voltage. This is

typically used for slower software transfer modes requiring level oriented voltage output application

requirements. For higher speed applications the DMA transfer mode allows timed waveform generation.

To use the AL_SetDAOutput function with the Pci55xx DAC0 or DAC1 the clocking source must also be

configured for “SOFTWARE_CONVERT”, in addition DAC0’s Trigger and Gating modes must be

DISABLED.

17.1 AL_SetDaOutput

Prototype C\C++

ERRNUM AL_SetDaOutput(LHLD lhld, double dData, long lUnits);

Visual for Basic Windows

Function AL_SetDaOutput(ByVal lhld As Long, ByVal dData As Double,

ByVal lUnits As Long) As Long

LHLD lhld handle of the LDSD

double dData output data

long lUnits specifies the output data units

The AL_SetDaOutput function immediately sets a hardware analog output port to the dData value.

Parameter Description

lhld Identifies the instance of the logical device subsystem.

dData Specifies the data output value.

lUnits Sets the units in which the above dData output parameter is specified. The

available settings are defined as AL_VOLTS or AL_RAWDATA in the ADLIB

include file.

Returns:

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

call.

Related Functions:

NONE

Program References:

Adlda01

Supported Logical Device Subsystems:

Pci55xx Series: DAC0, DAC1

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Measurement-computing ADLIB WIN Bedienungsanleitung Seite 63