National Instruments 321645c-01 用户手册
Chapter 2
Function Reference — SCXI_Scale
NI-DAQ FRM for PC Compatibles
2-352
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National Instruments Corporation
SCXI_Scale
Format
status = SCXI_Scale (SCXIchassisID, moduleSlot, channel, SCXIgain, TBgain, DAQboard,
DAQchannel, DAQgain, numPoints, binArray, scaledArray)
Purpose
Scales an array of binary data acquired from an SCXI channel to voltage or frequency.
SCXI_Scale
uses stored software calibration constants if applicable for the given module
when it scales the data. The SCXI-1122, SCXI-1126, and SCXI-1141 have default software
calibration constants loaded from the module EEPROM; all other analog input modules have
no software calibration constants unless you follow the analog input calibration procedure
outlined in the
calibration constants loaded from the module EEPROM; all other analog input modules have
no software calibration constants unless you follow the analog input calibration procedure
outlined in the
SCXI_Cal_Constants
function description.
Parameters
Input
Output
Name
Type
Description
SCXIchassisID
i16
SCXI chassis ID number
moduleSlot
i16
SCXI module slot number
channel
i16
SCXI channel from which the data was acquired
SCXIgain
f64
SCXI gain or range setting for the channel
TBgain
f64
gain applied at SCXI terminal block, if any
DAQboard
i16
device number of the DAQ device that acquired
the data
the data
DAQchannel
i16
onboard DAQ channel used in the acquisition
DAQgain
i16
DAQ device gain used in the acquisition
numPoints
u32
number of data points to scale
binArray
[i16]
binary data returned from acquisition
Name
Type
Description
scaledArray
[f64]
array of scaled data