hello! i hope you can help me with my problem
im using:
-PCI-MIO-16E-4 Daq-Card (at the moment, later i will get the PCI-6115 Daq-Card)
-Visual Basic 6.0 with Measurement Studio
my Problem: i want to stimulate a mechanical system with sine-waveforms of differernt frequencies, because i want to measure the resonance frequency of the mechanical system. For that i want the Daq-Card to output a sine waveform, the frequency should be swept from one frequency to an other frequency (i think the real values dont matter at the moment). The Problem is that the sine-waveform must not be interrupted when you change the frequency, because this would disturb the movement of the mechanical system.
I allready tried (without Measurement Studio) to use the fifo buffer (regeneration of thewaveform in the fifo) to be independent of the delays caused by the pc-system, but when i change the updaterate (change of the frequency) of the DAC there is again a dependence on the pc-system and the waveform goes to zero Volts for a while.
And i also tried to use the Chirp-Function (CWDSP.Chirp) of the measurement Studio, but with this function i have the problem, that i cant define how long the DAQ-Card outputs the actual frequency.
greetings A.Herman
