Measurement Computing Data Acquisition Systems rev.10.4 - Manual (Page 72)

daqAdcRdScan
Also See: daqAdcSetMux, daqAdcSetClockSource,
daqAdcSetTrig, daqAdcRdN
Format
daqAdcRdScan(handle, startChan, endChan, buf, gain, flags)
Purpose
daqAdcRdScan immediately activates a software trigger to acquire one scan consisting of each channel. The
scan begins with startChan and ends with endChan.
Parameter Summary
Parameter Type Description
handle DaqHandleT Handle to the device from which the ADC scan will be acquired
startChan DWORD The starting channel of the scan group
endChan DWORD The ending channel of the scan group
buf PWORD
An array into which the acquisition scans will be placed
gain DaqAdcGain The channel’s gain setting
flags DWORD Channel configuration flags in the form of a bit mask
Parameter Values
handle: obtained from the daqOpen function
startChan: must be a valid channel number for the device
endChan: must be a valid channel number for the device and greater than startChan
buf: must be a valid pointer to memory whose size is at least equal to:
[(endChan - startChan)* (the sample size, normally 2 bytes)]
gain: s
ee ADC Gain Definition table for gain parameter values
flags: see ADC Flag Definition table for flags parameter values
Returns
DerrInvGain Invalid gain
DerrIncChan Invalid channel
DerrNoError No error
For more details on error messages, please refer to the Daq Error Table.
Function Usage
This function will use a software trigger to immediately trigger and acquire one scan. This scan will sample
each channel selected, starting with startChan and ending with endChan. The gain setting will be
applied to all channels.
Channels must all be of the same channel type.
4.2-16 Daq API Command Reference 988594 Programmer’s Manual