Measurement-computing ADLIB WIN Uživatelský manuál stáhnout pdf (Strana 82)

Chapter 21 Clocking Modes

20-6

20.6 AL_SetClockOutput

Prototype C\C++

ERRNUM AL_SetClockOutput(LHLD lhld, LPSTR lpstrMode);

Visual Basic for Windows

Function AL_SetClockOutput(ByVal lhld As Long,

ByVal lpstrMode As String) As Long

LHLD lhld handle of the LDSD

LPSTR lpstrMode address of the ClockOutput mode string

The AL_SetClockOutput function sets the hardware ClockOutput operation mode of the LDSD.

For the Pci55xx Series the signal ADCLKOUT is available to output it’s clocking source. Each time the

ADC is clocked from any of the available clocking sources the ADCLKOUT signal pulses high for a

period of 1 microsecond. This output can be used to synchronize the clocking of multiple A/D converters

on different PCI cards.

Parameter Description

lhld Identifies the instance of the logical device subsystem.

lpstrMode Points to the desired ClockOutput string. The available string settings are device

independent and are verified by ADLIB against the available clock output

mode

options specified in the device's capabilities file.

Returns:

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

call.

Related Functions:

AL_GetClockOutput

Supported Logical Device Subsystems:

Pci55xx Series: ADC0, Options: ENABLED, DISABLED

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Measurement-computing ADLIB WIN Uživatelský manuál Strana 82