Warthog Systems LabHelper X
data acquisition software for Mac OS X
is a general-purpose
data acquisition program for the OS X operating
system. It runs natively on both Intel and PowerPC Macs. The current version has been tested on OS X versions through 10.7 ('Lion'); it also runs in 10.8 ('Mountain Lion') and also seems to work well with 10.9 ('Mavericks') -- although there has not been time for extensive testing with the latter. 'Mavericks' may require re-installation of the software driver for the TrippLite USB-19HS USB to serial converter (the version for OSX 10.8 worked with my system).|
LabHelper X interfaces with external serial A-D converters and offers the option of using the Sable Systems Universal Interface UI2, Remote Measurement Systems ADC-1, or some of the Data Electronics DataTakers. NOTE: use of the ADC-1 or DataTaker does not permit high sampling rates, and older laptops do not easily interface with serial devices.
LabHelper X stores data in a floating-point format with a precision of roughly 8 decimal digits. This saves considerable disk and memory space compared to storage at higher precisions, but provides somewhat lower numeric resolution. For example, in 8-digit precision (but not 10-digit precision) the numbers 12445.239 and 12445.23914 are 'identical'. This minor limitation should pose few problems to the average user, especially because the accuracy of most data is considerably less than can be represented in even 6 decimal digits. A 16-bit analog-to-digital converter working optimally can resolve one part in 65,535, for example -- five decimal digits.
LabHelper X was written in FutureBasic and FBtoC by Mark Chappell (a.k.a. 'Warthog Systems', with apologies to Gilbert Shelton) with facilities provided by the University of California, Riverside. No warranty of any kind is offered or implied. LabHelper X is NOT a commercial product and may not be sold or copied for commercial purposes. If you have questions you may contact me at the Biology Department, U.C. Riverside, Riverside, CA 92521. My email address is: firstname.lastname@example.org