I am having trouble recording a 30Hz sine wave signal using Picolog. I am required to record the demodulated signal (30Hz Sine Wave) from a navigation beacon. I'll be using a Laptop and an ADC-200 in an aircraft and recording the signal for 5 minutes. I have simulated this scenario on the bench by using a signal generator and obtaining a 30Hz sine wave which is being fed into the ADC-200. I have set the Picolog software to the following settings:
-1 ms Sampling Interval
On my desktop PC (running Windows 98), this simulated setup works fine; the recorded signal is a smooth sine wave. However, when I loaded the software onto a laptop PC running Windows 2000, the same recorded data was jagged (sampling interval was too slow). Incidentally, the laptop has a faster processor to the desktop. I then tried it on a new machine running Windows XP, and the same jagged waveform occurred (due to slow sampling rate). I then tried the same test on an old Laptop running Windows 95, but the test signal was still incomprehensible.
Why does this signal record perfectly on my PC, but not on other machines? As mentioned above, I have used both faster and slower machines and have also tried Windows 95, 98, XP and 2000. Yet, the only machine that this signal records OK on is my own desktop PC.
I filled in a technical support form about this problem on Werdnesday, but as yet haven't received a reply regarding this problem. Please let me if their is a possible solution to this, as I urgently need to seek out an alternative way of recording this signal should it not be possible to use a Pico Instrument for this.