Rise time Problem with flash upload

Question

My problem is this, I have my hosting on an IIS with PHP5 running, the flash uploader is in AS2.0 Flash 8, the file upload limit in the server is at 15mb, the maximum execution time is only 500 seconds. Now when I upload a 7mb file for example, takes less than 90 seconds to upload it, this all good, but rising to perhaps a smaller file with a conxeion to delay more than 90 seconds, the flash returns me HTTPError 500 .
The truth is that no longer can be, we would appreciate your help .. thanks

Answer 1

HollyBerry,
Neither of the links you posted is relevant to a digital input. The OP is using the NI 9401 which has only digital inputs. The 500 ns rise/fall time limit is likely the problem with his system.
andrewMHL,
Your external low pass filter followed by a Schmitt trigger is the best solution. Some NI digital input and counter input devices have digital debounce or hystersis inputs but the 9401 specifications do not mention anything like that. The 500 ns specification also implies that it does not have such signal conditioning.  
It is conceivable that you could sample the digital input lines at a very high rate and then use some time domain processing of the data to reject the high frequency extraneous transitions.
As a general rule I find that using a bit of circuitry to clean up a signal before computerizing it is usually better than writing a complicated signal processing algorithm later to try to extract the information from the data.
Lynn