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Why does my Mini Daq not work with jumper JP4 set to INT power?

April 26, 2017daq int Jumper mini power

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Why does my Mini Daq not work with jumper JP4 set to INT power?

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We have designed the Mini Daq with the option to get its supply voltage from the PC parallel port. Some parallel port adapters may not be able to supply enough current to fully power the Mini Daq. This is common with laptop computers that use low power 3.3 volt logic circuits. If you are experiencing this problem, set jumper JP4 to the EXT setting and connect an external 6 to 12volt supply to Pin 13 of DB25 connector P2. A 9volt battery works quite well for this. Does your MiniDaq software driver work under Windows NT? Our software drivers do not run under Windows NT due to the I/O protected mode features of NT. The 16 bit version of the driver, EAS12M.DLL, will work with Windows3.1 and Windows95. The 32bit version of the driver, EAS12M32.DLL, will only work on Windows95 pc’s.