Measurement Computing TempBook rev.3.0 - Manual (Page 130)

11-6 daqCommand Reference (Enhanced API) TempBook User’s Manual
daqAdcRd
DLL Function daqAdcRd(DaqHandleT handle, DWORD chan, PWORD sample, DaqAdcGain gain,
DWORD flags);
C daqAdcRd(DaqHandleT handle, DWORD chan, PWORD sample, DaqAdcGain gain,
DWORD flags);
Visual BASIC VBdaqAdcRd&(ByVal handle&, ByVal chan&, sample%, ByVal gain&, ByVal flags&)
Delphi daqAdcRd(handle:DaqHandleT; chan:DWORD; var sample:WORD; const gain:DaqAdcGain;
flags:DWORD)
Parameters
handle Handle to the device for which the ADC reading is to be acquired
chan A single channel number
sample A pointer to a value where an A/D sample is stored. Valid values: (See daqAdcSetTag )
gain The channel gain
flags Channel configuration flags in the form of a bit mask
Returns DerrFIFOFull - Buffer Overrun
DerrInvGain - Invalid gain
DerrInvChan - Invalid channel
DerrNoError - No Error (also, refer to API Error Codes on page 11-39)
See Also daqAdcSetMux, daqAdcSetTrig, daqAdcSoftTrig
Program References DACEX.PAS (Delphi)
Used With All devices
daqAdcRd is used to take a single reading from the given local A/D channel. This function will use
a software trigger to immediately trigger and acquire one sample from the specified A/D channel.
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The chan parameter indicates the channel for which to take the sample.
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The sample parameter is a pointer to where the collected sample should be stored.
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The gain parameter indicates the channel’s gain setting.
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The flags parameter allows the setting of channel-dependent options. See ADC Flags
Definition table for channel flags definitions.