User manual

Chapter 3 Software Overview

from each channel is stored in adjacent

elements of your buffer.

SCAN_Sequence_Retrieve

Returns the scan sequence created by

NI-DAQ as a result of a previous call to

SCAN_Sequence_Setup

Initializes the device for a multirate

scanned data acquisition operation.

Initialization includes selecting the

channels to be scanned, assigning gains to

these channels, and assigning different

sampling rates to each channel by dividing

down the base scan rate.

SCAN_Setup

Initializes circuitry for a scanned data

acquisition operation. Initialization

includes storing a table of the channel

sequence and gain setting for each channel

to be digitized.

SCAN_Start

Initiates a multiple-channel scanned data

acquisition operation, with or without

interval scanning, and stores its input in an

array.

Low-Level Double-Buffered Data Acquisition

Functions

These functions are low-level primitives used for setting up and monitoring

asynchronous double-buffered data acquisition operations.

Refer to the NI-DAQ Function Reference Online Help file to determine

which functions your device supports.

DAQ_DB_Config

Enables or disables double-buffered data

acquisition operations.