LabHelper system requirements, formats, etc.


Requirements:     LabHelper works best with a color screen but will function with gray-scale and monochrome monitors.  Minimum screen resolution is 640 by 480 pixels, but the number of channels is limited to 14 unless 600+ vertical pixels are available.  It's much happier with 1024 X 768 resolution or better.  LabHelper is not a memory hog but a maximum-sized file needs roughly 130 Mb at the maximum file size of 2 million cases and 16 channels.  The program expects these fonts, and may produce odd-looking or misplaced text if they are not available (nearly all are standard in OS X): Helvetica, Geneva, Symbol, Times, Monaco, Copperplate, Papyrus, Lucida Grande.


Numerical resolution, data types, file formats:     LabHelper stores numbers in a floating-point format with roughly 8-10-digit precision.  Floating-point math is much faster than BCD math, but somewhat less accurate.  However, this is a minor limitation that should pose few problems to the average user, especially because the accuracy of most data is considerably lower.  A 16-bit analog-to-digital converter working optimally can resolve one part in 65,535, for example -- five decimal digits.


Language localization:     The key (letter) commands in LabHelper are based on a US ENGLISH keyboard.  If you use a keyboard set up for another language, you will probably find that some key letter commands don't work or give unexpected results.   This should not be a serious issue as all of the key commands can be performed from menus or the 'toolbar' that appears during recording.   If you do want to use key commands, trial and error experimentation will reveal which keys correspond to particular commands.