National Instruments Welding System 321645c-01 Manual De Usuario

Chapter 2

Function Reference — Calibrate_DSA

©

 National Instruments Corporation

2-55

NI-DAQ FRM for PC Compatibles

Use this function to calibrate your DSA device.

The legal range for operation is given in terms of constants defined in a header file. The header 
file you should use depends on the language you are using:

•

C programmers—

NIDAQCNS.H

 (

DATAACQ.H

) for LabWindows/CVI)

•

BASIC programmers—

NIDAQCNS.INC 

Visual Basic for Windows programmers 

should refer to the Programming Language Considerations section in Chapter 1, 
Using the NI-DAQ Functions, for more information.

•

Pascal programmers—

NIDAQCNS.PAS

operation determines the operation to be performed.
Range:

ND_SELF_CALIBRATE

—

Self-calibrates the device.

ND_EXTERNAL_CALIBRATE

—

Externally calibrates the device.

ND_RESTORE_FACTORY_CALIBRATION

—

Calibrates the device using internal factory 

reference.

refVoltage is the value of the DC calibration voltage connected to analog input channel 0 
when operation is 

ND_EXTERNAL_CALIBRATE

. This parameter is ignored when operation is 

set to 

ND_EXTERNAL_CALIBRATE 

or 

ND_RESTORE_FACTORY_CALIBRATION

.

Range:+1.0 to +9.99 V.

To achieve the highest accuracy, use a reference voltage between +5.0 and +9.99 V.

i16

assigned by configuration utility

u32

operation to be performed

f64

DC calibration voltage