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We're having trouble getting accurate results from a PC-104 A2D board that we want to use for a project that will likely be using the TS-7800 SBC. We have two other intel-based SBCs that also run linux and the A2D provides very accurate results (standard deviation of 0.06 after a few minutes to warm up) when connected to both of those boards. When connected to the 7800, the readings from the board are far less stable, with a stddev of over 2.5 after the same amount of time or reads (the code on the 7800 seems to run about 1/2 the speed of the other boards -- we're not sure exactly why). Aside from adjusting the port I/O between the intel and ARM, we're running the exact same program on all three systems. Has anyone else experienced anything like this? Does anyone know what the cause might be? Is there any way to correct it (other than redesigning our enclosure to fit one of the other SBCs and returning all of the 7800 we bought)? __._,_.___
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