Measurement Computing Data Acquisition Systems rev.10.4 - Manual (Page 144)

daqCalSetup
Also See: daqReadCalFile, daqCalConvert,
daqCalSetupConvert
Format
daqCalSetup(handle, nscan, readingsPos, nReadings, chanType, chanGain,
startChan, bipolar, noOffset)
Purpose
daqCalSetup configures the order and type of data to be calibrated.
Parameter Summary
Parameter Type Description
handle DaqHandleT Handle to the device to be calibrated
nscan DWORD Number of channels in a single scan
readingsPos DWORD Position of the readings to be calibrated within the scan
nReadings DWORD Number of readings to calibrate
chanType DcalType Type of channel/board from which the readings to be calibrated are
read
chanGain DaqAdcGain Gain setting of the channels to be calibrated
startChan DWORD Channel number of the first channel to be converted
bipolar BOOL If true, the DaqBook/DaqBoard is configured for bipolar readings;
if false, it is configured for unipolar readings
noOffset BOOL If true, the offset calibration constant will not be used to calibrate
the readings; if false, the offset calibration will be used
Parameter Values
handle: obtained from the daqOpen function
nscan: the number of channels in the scan group configuration (see daqAdcSetScan)
readingsPos: the position of the channels to calibrate within the scan (see daqAdcSetScan)
nReadings: the number of readings to calibrate from 1 to 4,294,967,295; however, memory limitations
may apply
chanType: see table below
chanGain: s ee ADC Gain Definition table for chanGain parameter definitions
startChan: must be a valid device channel within the scan group definition (see daqAdcSetScan)
bipolar: valid values are either true (
≠ 0) or false ( = 0)
noOffset: valid values are either true (
≠ 0) or false ( = 0)
Parameter Type Definitions
chanType-(DcalType)
Definitions Channel Configuration Description
DcalTypeDefault Any voltage channel Defines a calibration of main unit or expansion channel voltage
DcalTypeCJC Cold Junction Compensation Channel Defines a calibration of expansion CJC channel for a
thermocouple module or card
DcalTypeBypass Filter Bypass mode for DBK4 Defines a calibration for DBK4 channel in filter bypass mode
DcalTypeFilter Filter Cutoff mode for DBK4 Defines a calibration for DBK4 channel in filter cutoff mode
The value for the chantype parameter should be set to DcalTypeCJC (1) when
calibrating a CJC channel of a thermocouple module or card, and DcalTypeDefault (0
)when reading any other channel.
4.3-18 Daq API Command Reference 908494 Programmer’s Manual