It may not be good enough, but are you trying to see a signal that repeats and can be assumed to be the same from one time to another? If so, perhaps you could capture the entire waveform in segments and piece the data together.
I have used this approach with an Agilent86100A Oscilloscope in a situation where I had control of the input signal to pass through the device under test ... in a type of experiment in which a controlled input signal passed through a device under test and the resulting output signal was of interest.. where one could reasonably assume that the response of the device under test to the same type of input signal would be the same each time if the input signal was the same each time, and that within a reasonable tolerance, the input signal was the same each time, therefore the entire output signal duration of interested could be examined by looking at it piece-wise.
In other words, providing the same input signal while capturing the output with a range of trigger delay times from the first triggering value in the output signal allowed me to scan the oscilloscope window over a data set (waveform) which was longer than the number of points storable per each individual acquisition. This worked like a charm in that application.
Any chance you could capture data over a longer duration by reducing the sampling frequency?
If neither of those are possible, I don't think there is much else to do, and then it sounds like you'll either need to find a different instrument or modify the signal to fit the instrument you have available somehow. What kind of application requires that you must capture such a long signal?
Message Edited by Isaak on 06-18-2005 01:25 AM
