Measurement Computing Data Acquisition Systems rev.10.4 - Manual (Page 167)

daqCvtRtdSetupConvert
Also See: daqCvtRtdSetup, daqCvtRtdConvert
Format
daqCvtRtdSetupConvert(nscan, startPosition, nRtd, rtdType, avg, counts,
scans, temp, ntemp)
Purpose
daqCvtRtdSetupConvert both sets up the resistance temperature detector (RTD) data conversion process
and converts that RTD data to a Celsius scale.
Parameter Summary
Parameter Type Description
nscan DWORD Total number of channel readings in a scan
startPosition DWORD Position of the first RTD reading group in the scan
nRtd DWORD Number of RTDs beings scanned
rtdType RtdType Type of RTDs being used
avg DWORD Type of averaging to be used
counts PWORD Pointer to raw A/D data from one or more scans
scans DWORD Number of scans of raw data in counts (number of pre-trigger +
post-trigger scans)
temp PSHORT Variable array to hold converted temperatures
ntemp DWORD Size of temperature array
Parameter Values
nscan: valid values range from 1 to 512; this number should be equivalent to:
[(the number of RTDs * 4) + (any additional channels)]
startPosition: valid values range from 1 to 507; the first scan position will be position 0, and the last
will be position (nscan-1)
nRtd:
valid values range from 1 to 128
rtdType: see table below
avg: see table below
counts: valid pointer to an array of integer words (2 bytes) which contain the raw data to perform the RTD
conversion
scans: the number of scans to be converted from 1 to the size of the counts array (in scans)
temp: valid pointer to an array of single precision floating point (4 bytes) values which will store the
converted readings upon return from this command
ntemp:
the value of the ntemp parameter should be equal to number of RTDs specified in setup times the
number of scans. If averaging is used, then ntemp should be equal to:
[(number of RTDs) * (scans) * (the value of the avg parameter as set in the
daqCvtRtdSetup function)].
Programmer’s Manual 908494 Daq API Command Reference 4.3-41