Справочник Пользователя для National Instruments 321645c-01
Chapter 2
Function Reference — AI_Read_Scan
NI-DAQ FRM for PC Compatibles
2-14
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National Instruments Corporation
AI_Read_Scan
Format
status = AI_Read_Scan (AI_Read_Scan (deviceNumber, reading)
Purpose
Returns readings for all analog input channels selected by
SCAN_Setup
(E Series devices
only, with or without the SC-2040 accessory).
Parameters
Input
Output
Parameter Discussion
reading is an array of readings from each sampled analog input channel. The length of the
reading array is equal to the number of channels selected in the
reading array is equal to the number of channels selected in the
SCAN_Setup
numChans
parameter. Range of elements in reading depends on your device A/D converter resolution
and the unipolar/bipolar selection you made make for a given channel.
and the unipolar/bipolar selection you made make for a given channel.
Using This Function
AI_Read_Scan
samples the analog input channels selected by
SCAN_Setup
, at half the
maximum rate permitted by your data acquisition hardware.
Name
Type
Description
deviceNumber
i16
assigned by configuration utility
Name
Type
Description
reading
[i16]
readings from each sampled analog input channel