National Instruments NI 6013, NI 6014 - page 86

AppendixC CommonQuestions
©NationalInstruments Corporation C-5 NI6013/6014 User Manual
Howcan I use the STARTSCANand CONVERT* signals on the
NI 6013/6014 to sample the AI channel(s)?
The NI 6013/6014 uses the STARTSCANand CONVERT* signals to
perform intervalsampling. As Fi gure C-2 shows,STARTSCAN controls
the scan interval,which is determi ned bythe following equality:
FigureC-2. Scan Interval
CONVERT*controls the interchannel delay, which is determined by the
followingequality:
This method allowsmultiple chan nels to be sampled relativelyquickly in
relationshipto the overall scan rate, providing a nearly simultaneous effect
with afixed delay between channels.
1
s
can interval
-------------------------------scanrate=
Channel0
Channel1
InterchannelDelay
ScanInterval
1
interchannel delay
-------------------------------------------- samplingrate=