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I can only guess but if you want to change the sampling rate you will have to change the wave scaling of your input wave and most likely restart the scan (I am too lazy to search my old NI USB-6008 without further details): Certain aspects of the acquisition are controlled by the properties of the waves you provide to receive the data. If multiple channels are being scanned, you must provide multiple waves. Warcraft 3 Full Game Iso.

GETTING STARTED GUIDE NI-DAQ mx for USB Devices. To install the NI USB device, plug the USB cable into the PC and device, and follow the prompts. What It Is: The Igor NIDAQ Tools MX package adds support for data acquisition directly into Igor Pro, our scientific analysis and graphing application. NI-DAQmx installs support for NI Data Acquisition and Signal Conditioning devices. NI-DAQmx 16.0.0 adds support for LabVIEW 2016. NI-DAQmx.This manual and the NIDAQ Tools MX are copyrighted by WaveMetrics, Inc. Under copyright laws it is illegal for you to copy this manual.DAQ.

All the waves must have the same length. The sampling period is set by the dX factor of the wave scaling of the first wave in WaveParameterString. See Analog Input: Using Waves. In displayhelptopic ( 'DAQmx_Scan' ) HJ. S.r.chinn wrote:From the NIDAQmx Tools manual: 'The sampling period is set by the dX factor of the wave scaling of the first wave in WaveParameterString.' This should work as long as your sampling increment is within the limits of the NI board you are using.

You will have to re-scale (and possibly change the number of points) of the destination waves for each frequency you use. Thanks, so if: Make/O/N=100 Deflection, Torsion [100 points] SetScale/P x, 0,0.1 's', Deflection, Torsion DAQmx_Scan/DEV='dev4' WAVES='Deflection, 2; Torsion, 3;' (There are my parameters) Then, display the two waves. After I want to change the sampling period, so, I write in the command line: SetScale/P x, 0,1 's', Deflection (for example) right? Can you give me an example, please? HJDrescher wrote:This is actually quite simple to explain (and was actually mentioned twice): The NIDAQ package READS the DX value from the wave scaling and sets the sampling frequency to this value. Your example will change the sample rate from, 10Hz to 1Hz. I assume you will first have to readjust your number of data points in the wave, then set the wave scaling to your altered sample frequency and start the acquisition AGAIN (and maybe you want to keep a copy of the other data).

HJ Thank You so much: so I do this: Firstly: Make/O/N=100 Deflection, Torsion [100 points] SetScale/P x, 0,0.1 's', Deflection, Torsion DAQmx_Scan/DEV='dev4' WAVES='Deflection, 2; Torsion, 3;' Then, display the two waves. Secondly, I re-adjust the number of data points in the wave, then set the new wave scaling: Make/O/N=200 Deflection, Torsion SetScale/P x, 0,1 's', Deflection, Torsion DAQmx_Scan/DEV='dev4' WAVES='Deflection, 2; Torsion, 3;' and finally again, display waves right? So in 0.1 is the frequency of 1Hz, while 0,0.1 = 10Hz? I don't understand. I would also suggest to read chapter II-5 about waves in the Igor manual. With the /P flag for the setscale command you give a start value and an increment for the wave's x axis.